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Jefferson County, KY Weather And Climate Synopsis

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Soil Moisture Anomaly Loop



Current Spraying Conditions
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A joint service of the UK Ag Weather Center and the National Weather Service.


Updated Wednesday Evening, April 26, 2017

...Showers & Storms later Today thru Friday...

The chance for showers will increase overnight as a line of showers and storms moves slowly across the state, lasting into Thursday morning. Much of the rest of the day looks to remain dry. This will signal the start of a rather active pattern ahead with multiple rounds of rainfall.

The 7-day rainfall forecast maps are consistently indicating significant rainfall over much of Kentucky over the next week. The potential for additional flooding will increase significantly by the weekend. The repetitive heavy rain events expected have the potential for widespread significant flooding, particularly in the western third of the state.

Kentucky State Forecast

Western KY:
Central KY:
Eastern KY:

Specific and detailed farm-by-farm weather forecast information is available in your
Point Ag Forecast. Current Conditions Kentucky, U.S.

USDA's Ag Weather:National Ag. Weather Outlook, International Ag. Weather Summary , Next Weather Event?
Current Surface Map, Regional, Composite, TWC, Yesterday's Highs, Lows ,
Upper Air


Regional Hourly Observations For JEFFERSON County, Kentucky
Issued at 500 PM EDT WED APR 26 2017
NORTH CENTRAL KENTUCKY
  
CITY           SKY/WX    TMP DP  RH WIND       PRES   REMARKS
LOUISVILLE/SDF PTSUNNY   85  55  35 S18G25    29.58F                  
LOUISVILLE/LOU SUNNY     85  57  38 S9G23     29.58F                  
FORT KNOX      CLOUDY    82  54  37 S16G24    29.59F                  

KY Round-up, Current Temperatures, Dewpoint, Rh, Wind, Regional Obs., Station Model, Surface 4-Panel, NWS Louisville
Meteograms: Paducah , Evansville , Bowling Green , Hopkinsville , Frankfort , Louisville , Lexington , Covington , Jackson , London , Shelby Co. Weather , Spindletop Research Weather Station , Woodford Co. Research Weather Station , About Meteograms


Current Agriculture, Lawn & Garden Weather Conditions in Kentucky
Based on observations at 500pm EDT, Wednesday April 26, 2017

Across Kentucky...temperatures are near 80 degrees west, near 82 degrees central, and near 83 degrees east. Current sky conditions are cloudy west, sunny central, and cloudy east. In the west, relative humidity is near 54%, and the dew point is near 62 degrees. In the central part of the state, relative humidity is near 30%, and the dew point is near 48 degrees. In the east, relative humidity is near 36%, and the dew point is near 54 degrees. Current drying conditions are fair west, very good central, and good east. Winds are variable at 7 mph west, where conditions are favorable for spraying. Winds are from the south at 17 mph with gusts at 24 mph central, where conditions are not favorable for spraying due to strong winds. Winds are variable at 5 mph east, where conditions are favorable for spraying. Based on current available observations, the highest temperature is 85 degrees at Louisville International and Louisville Bowman. The lowest temperature is 80 degrees at Paducah.

List of Agriculture, Lawn & Garden Weather Observations in Kentucky


Current NOWCAST not available:
Nowcasts are not issued routinely during fair weather. Only when
precipitation or other significant weather is occuring in this county will these
forecasts be issued. Currently, there is no short term forecast in effect.

UKAWC Radar, NWS Radar (NEW!), SPC Radar, Regional Radar, SkyWarn, NEXRAD, LSI Heat Index
Hazardous Weather Outlook For JEFFERSON County, Kentucky
Issued at: Wed Apr 26 14:55:39 EDT 2017

English, Tell City, Corydon, New Albany, Jeffersonville, Lewisport, 
Hawesville, Hardinsburg, Brandenburg, Hartford, Leitchfield, 
Elizabethtown, Shepherdsville, Louisville, La Grange, Bedford, 
Milton, New Castle, Shelbyville, Frankfort, Georgetown, Cynthiana, 
Taylorsville, Lawrenceburg, Versailles, Lexington, Paris, Carlisle, 
Bardstown, Springfield, Harrodsburg, Nicholasville, Winchester, 
Hodgenville, Lebanon, Danville, Lancaster, Richmond, Morgantown, 
Brownsville, Horse Cave, Greensburg, Campbellsville, Liberty, 
Stanford, Russellville, Bowling Green, Franklin, Providence, 
Scottsville, Glasgow, Tompkinsville, Edmonton, Columbia, Jamestown, 
Burkesville, and Albany
255 PM EDT Wed Apr 26 2017 /155 PM CDT Wed Apr 26 2017/

This hazardous weather outlook is for portions of south central
Indiana and Central Kentucky.

.DAY ONE...Tonight.

A few thunderstorms are expected after Midnight as a cold front 
moves into the region. Some of the stronger storms could produce 
gusty winds and heavy rain.

.DAYS TWO THROUGH SEVEN...Thursday through Tuesday.

Thunderstorms will continue to move east through the region early 
Thursday morning with a few strong storms possible.

Additional rounds of thunderstorms are possible Friday late afternoon
through the weekend. While confidence is low regarding exact timing 
of storms, the environment could support strong to severe 
thunderstorms Friday through Sunday. 

.SPOTTER INFORMATION STATEMENT...

Spotter activation may be needed for stronger winds late tonight and
again Friday late afternoon  through the weekend.

&&

More information, along with other weather, hydrological and
climate information can be found, at weather.gov/louisville.

NWS Severe Weather Map , Convective Outlook


RDF forecast not available NEW NWS Experimental Weather Activity Planner: West, Central, East
NWS Experimental Point Forecasts (5 km x 5 km grid for Kentucky): West, Central, East

JEFFERSON County, Kentucky Agriculture, Lawn & Garden Weather Advisory

Updated: 310 AM EST THU NOV 12 2009

TODAY (6AM-5PM)

Max Temperature...........................61 degrees.
Precipitation (liq. eq. )...................0.00 inches (No rainfall).
Precipitation area .........................0% of the county expected.
Dewpoints.......................................29 to 34 Degrees.
Min RH (Relative Humidity).........37%.
Wind Speed....................................4 to 10 mph
Winds@3 PM..................................northeast at 10 mph
Spraying Conditions....................favorable
Sky Conditions @9 AM ...............mostly sunny.
RH < 50%........................................ for 7 hours
RH > 80%.........................................for 0 hour
No. of Hours Temp <=32 .............0
No. of Hours Temp <= 20 .............0
No. of Hours Temp <= 0 ...............0

The high today (6am-5pm) in Jefferson county, is expected to be near 61 degrees. No rainfall is expected. Temperature will range from near 39 to near 60 degrees. Dewpoints will range from 29 to 34 degrees. These dewpoints will combine with today (6am-5pm)'s temperatures resulting in relative humidity minimum of 37%. Skies will be mostly sunny at 9 AM and mostly sunny at 3 PM. Wind speed will range from 4 to 10 mph during the period. Winds at 3 PM will be out of the northeast at 10 mph, which is favorable spraying conditions in rain-free areas. Relative humidity will be less than 50% for 7 hours and greater than 80% for 0 hour

TONIGHT (6PM-5AM)

Min Temperature...........................38 degrees.
Precipitation (liq. eq. )...................0.00 inches (No rainfall).
Precipitation area .........................0% of the county expected.
Dewpoints.......................................near 34 Degrees.
Max RH (Relative Humidity)........76%.
Wind Speed....................................2 to 8 mph
Winds@3 AM..................................northeast at 3 mph
Spraying Conditions....................favorable
Sky Conditions @12 AM .............clear.
Sky Conditions @3 AM ...............clear.
RH < 50%........................................ for 1 hour
RH > 80%.........................................for 0 hour
No. of Hours Temp <=32 .............0
No. of Hours Temp <= 20 .............0
No. of Hours Temp <= 0 ...............0

The low tonight (6pm-5am) in Jefferson county, is expected to be around 38 degrees. No rainfall is expected. Temperature will range from near 41 to near 53 degrees. Dewpoints will be near 34 degrees. These dewpoints will combine with tonight (6pm-5am)'s temperatures resulting in relative humidity maximum of 76%. Skies will be clear at 12 AM and clear at 3 AM. Wind speed will range from 2 to 8 mph during the period. Winds at 3 AM will be out of the northeast at 3 mph, which is favorable spraying conditions in rain-free areas. Relative humidity will be less than 50% for 1 hour and greater than 80% for 0 hour

TOMORROW (6AM-5PM)

Max Temperature...........................64 degrees.
Precipitation (liq. eq. )...................0.00 inches (No rainfall).
Precipitation area .........................0% of the county expected.
Dewpoints.......................................34 to 42 Degrees.
Min RH (Relative Humidity).........41%.
Wind Speed....................................2 to 5 mph
Winds@3 PM..................................southeast at 3 mph
Spraying Conditions....................favorable
Sky Conditions @9 AM ...............mostly sunny.
Sky Conditions @3 PM ...............mostly sunny.
RH < 50%........................................ for 5 hours
RH > 80%.........................................for 2 hours
No. of Hours Temp <=32 .............0
No. of Hours Temp <= 20 .............0
No. of Hours Temp <= 0 ...............0

The high tomorrow (6am-5pm) in Jefferson county, is expected to be near 64 degrees. No rainfall is expected. Temperature will range from near 41 to near 64 degrees. Dewpoints will range from 34 to 42 degrees. These dewpoints will combine with tomorrow (6am-5pm)'s temperatures resulting in relative humidity minimum of 41%. Skies will be mostly sunny at 9 AM and mostly sunny at 3 PM. Wind speed will range from 2 to 5 mph during the period. Winds at 3 PM will be out of the southeast at 3 mph, which is favorable spraying conditions in rain-free areas. Relative humidity will be less than 50% for 5 hours and greater than 80% for 2 hours

TOMORROW NIGHT (6PM-5AM)

Min Temperature...........................46 degrees.
Precipitation (liq. eq. )...................0.00 inches (No rainfall).
Precipitation area .........................0% of the county expected.
Dewpoints.......................................42 to 44 Degrees.
Max RH (Relative Humidity)........89%.
Wind Speed....................................2 to 3 mph
Winds@3 AM..................................south at 2 mph
Spraying Conditions....................favorable
Sky Conditions @12 AM .............mostly clear.
Sky Conditions @3 AM ...............mostly clear.
RH < 50%........................................ for 0 hour
RH > 80%.........................................for 3 hours
No. of Hours Temp <=32 .............0
No. of Hours Temp <= 20 .............0
No. of Hours Temp <= 0 ...............0

The low tomorrow night (6pm-5am) in Jefferson county, is expected to be around 46 degrees. No rainfall is expected. Temperature will range from near 47 to near 59 degrees. Dewpoints will range from 42 to 44 degrees. These dewpoints will combine with tomorrow night (6pm-5am)'s temperatures resulting in relative humidity maximum of 89%. Skies will be mostly clear at 12 AM and mostly clear at 3 AM. Wind speed will range from 2 to 3 mph during the period. Winds at 3 AM will be out of the south at 2 mph, which is favorable spraying conditions in rain-free areas. Relative humidity will be less than 50% for 0 hour and greater than 80% for 3 hours

72 HOUR SUMMARY

The temperature is expected to be in the range from 38 degrees and 67 degrees. Dewpoints will range from 29 to 47 degrees. No measurable precipitation is expected.


Ag. Weather Forecast Parameter Maps:Spraying Conditions , Dewpoint Temperatures, Livestock Heat Stress


Extended Digital forecast not available
Current FORECAST not available TWC Forecast, NWS Maps, Fire Danger, Day 1 Precip, Day 2, 5 Day Total, Days 1-5
NGM 60 Hr Forecast Meteograms: Paducah , Evansville , Bowling Green , Hopkinsville , Frankfort , Louisville , Lexington , Covington , Jackson , London, All Kentucky Hourly Model Guidance, About NGM Forecast Meteograms

Kentucky Agricultural Weather Medium-Range Outlook (Based on the MEX Model)

MEDIUM RANGE AG FORECAST:

- Click here for Graphical Ag. Weather Forecast -

FRIDAY :
Highs across the state will range from 77 West and 79 Central, to 83 East. Dewpoints will range from 50 to 56 West, 49 to 55 Central, and 48 to 50 East throughout the day. Rainfall amounts of 0.00-0.01 inches over 40 % of the area West, 0.00-0.01 inches over 30 % of the area Central, and 0.00-0.01 inches over 10 % of the area East should be expected. Lows Friday will fall to 53 West, 54 Central, and 54 East. Skies throughout the day will start out cloudy and end cloudy in the West, start cloudy and end partly cloudy Central, and start out partly cloudy and end partly cloudy East. The maximum livestock stress category will be no stress West, no stress Central, and no stress East. There will be 15 corn growing degree days West, 16 Central, and 18 East. Wind speeds in the morning and afternoon will be around 6 and 15 mph , respectively, West, 11 and 18 mph Central, and 4 and 8 mph East.

SATURDAY :
Highs across the state will range from 80 West and 78 Central, to 86 East. Dewpoints will range from 62 to 62 West, 58 to 60 Central, and57 to 59 East throughout the day. Rainfall amounts of >=2 inches over 90 % of the area West, 1.00-1.99 inches over 80 % of the area Central, and 0.10-0.24 inches over 70 % of the area East should be expected. Lows Saturday will fall to 63 West, 65 Central, and 63 East. Skies throughout the day will start out cloudy and end cloudy in the West, start cloudy and end cloudy Central, and start out cloudy and end cloudy East. The maximum livestock stress category will be no stress West, no stress Central, and no stress East. There will be 22 corn growing degree days West, 22 Central, and 24 East. Wind speeds in the morning and afternoon will be around 7 and 10 mph , respectively, West, 11 and 12 mph Central, and 5 and 5 mph East.

SUNDAY :
Highs across the state will range from 73 West and 79 Central, to 83 East. Dewpoints will range from 63 to 53 West, 62 to 55 Central, and 59 to 57 East throughout the day. Rainfall amounts of >=2 inches over 80 % of the area West, 1.00-1.99 inches over 70 % of the area Central, and 0.01-0.09 inches over 50 % of the area East should be expected. Lows Sunday will fall to 68 West, 66 Central, and 65 East. Skies throughout the day will start out cloudy and end cloudy in the West, start cloudy and end cloudy Central, and start out cloudy and end cloudy East. The maximum livestock stress category will be no stress West, no stress Central, and no stress East. There will be 20 corn growing degree days West, 22 Central, and 24 East. Wind speeds in the morning and afternoon will be around 12 and 22 mph , respectively, West, 13 and 23 mph Central, and 4 and 8 mph East.

MONDAY :
Highs across the state will range from 67 West and 66 Central, to 70 East. Dewpoints will range from 44 to 41 West, 46 to 40 Central, and48 to 42 East throughout the day. Rainfall amounts of 0.10-0.24 inches over 50 % of the area West, >=2 inches over 90 % of the area Central, and 1.00-1.99 inches over 90 % of the area East should be expected. Lows Monday will fall to 48 West, 54 Central, and 56 East. Skies throughout the day will start out cloudy and end cloudy in the West, start cloudy and end cloudy Central, and start out cloudy and end cloudy East. The maximum livestock stress category will be no stress West, no stress Central, and no stress East. There will be 8 corn growing degree days West, 10 Central, and 13 East. Wind speeds in the morning and afternoon will be around 18 and 19 mph , respectively, West, 23 and 27 mph Central, and 12 and 13 mph East.

TUESDAY :
Highs across the state will range from 75 West and 70 Central, to 71 East. Dewpoints will range from 43 to 47 West, 40 to 39 Central, and 42 to 40 East throughout the day. Rainfall amounts of 0.00-0.01 inches over 30 % of the area West, 0.00-0.01 inches over 40 % of the area Central, and 0.00-0.01 inches over 30 % of the area East should be expected. Lows Tuesday will fall to 47 West, 48 Central, and 48 East. Skies throughout the day will start out partly cloudy and end cloudy in the West, start cloudy and end partly cloudy Central, and start out cloudy and end cloudy East. The maximum livestock stress category will be no stress West, no stress Central, and no stress East. There will be 12 corn growing degree days West, 10 Central, and 10 East. Wind speeds in the morning and afternoon will be around 10 and 13 mph , respectively, West, 15 and 11 mph Central, and 7 and 7 mph East.

WEDNESDAY :
Highs across the state will range from 80 West and 79 Central, to 78 East. Dewpoints will range from 51 to 57 West, 47 to 52 Central, and 44 to 45 East throughout the day. Rainfall amounts of 0.00-0.01 inches over 40 % of the area West, 0.00-0.01 inches over 40 % of the area Central, and 0.00-0.01 inches over 20 % of the area East should be expected. Lows Wednesday will fall to 55 West, 53 Central, and 52 East. Skies throughout the day will start out cloudy and end cloudy in the West, start cloudy and end partly cloudy Central, and start out cloudy and end partly cloudy East. The maximum livestock stress category will be no stress West, no stress Central, and no stress East.There will be 18 corn growing degree days West, 16 Central, and 15 East. Wind speeds in the morning and afternoon will be around 14 and 17 mph, respectively, West, 12 and 19 mph Central, and 3 and 6 mph East.

Raw Data: MEX(west), MEX(central), MEX(east)

* NOTE: See specific site Ag Wx Data and Summary files for further information.

Graphic Regional Ag. Weather Outlook, Tabular data for the Medium Range Outlook


Medium & Long Range Outlook For Kentucky
                             KENTUCKY                                                                     
                 ---------------------------------------------
                 6 TO 10 DAY  8 TO 14 DAY   30 DAY    90 DAY 
                 MAY 2-MAY 6 MAY 4-MAY 10    MAY       MAY-JUL                      
                 -----------  -----------  --------  ---------
   Temperature:      Below        Below      Above      Above                      
 Precipitation:      Above        Above     Normal     Normal                      

....  Medium and long range outlooks provided by NCEP/K. Thomas Priddy
UKAWC 8 Day Forecast Maps, TWC Jet, 15-Day Jet,Trend, Max/Mins (80k)
6 to 10 Day , 8 to 14 Day , Text, 30-Day Outook, 90-Day Outook, 120-Day Outlook


Precipitation Report: (liquid equivalent)

Total Precipitation and Deviation From Normal (in inches)
Valid May 27, 2012

The nearest available weather station for Jefferson County is Louisville:

                      Past 7 days      Past 30 days   Jan 1 - Present
Station             Total     Dev     Total     Dev     Total     Dev
---------------     -----  ------     -----  ------    ------  ------
Louisville           0.00   -1.04      4.72   +0.28     18.26   -0.66
List of Kentucky Weather Stations (1st Order & Ag. stations) Rainfall
UKAWC Regional Ag Weather Summary (Select Format): Spring , Summer , Fall

Drought Status For JEFFERSON County, Kentucky
(Based on the latest Palmer Drought Severity and Crop Moisture Indices)
CENTRAL   KY CLIMATE DIVISION

Hydrological Drought (PDSI) Situation:
------------------------------------------------------------------------------------

Current Long-term Hydrological Moisture Status: NEAR NORMAL           (PDSI=  -0.88)
Rainfall Needed:  2.70 inches ABOVE NORMAL


Crop Moisture (CMI) Situation:
----------------------------------------------------------------------------------------------------------

Current Short-term Crop Moisture Status: Prospects Above Normal, Some Fields Too Wet  (CMI=   1.53)
Change From Previous Week: WETTER     SOILS (  1.39)

Note: Due to rainfall variability within each climate division, check Precip Reports/GIS Estimates and the Kentucky Climate Summary for the latest moisture information for this county.

Additional Drought Info.: UKAWC Drought Page


Kentucky Climate Summary
normal. High temperatures averaged from 72 in the West to 69 in the East. Departure from normal high temperatures ranged from -1 degrees from normal in the West to +1 degrees from normal in the East. Low temperatures averaged from 53 degrees in the West to 54 degrees in the East. Departure from normal low temperature ranged from +4 degrees from normal in the West to +7 degrees from normal in the East.

Precipitation (liq. equ.) for the period totaled 1.38 inches statewide which was + 0.40 inches from normal. Precipitation totals by climate division, West 1.75 inches, Central 1.09 inches, Bluegrass 0.62 inches and East 1.91 inches, which was + 0.68, + 0.07, -0.32 and + 1.01 inches respectively from normal. By station, precipitation totals ranged from a low of 0.08 inches at Nashville to a high of 3.99 inches at Cumberland Gap.

Kentucky Climate Summaries: Last 3 days, 7 days, 14 days, 21 days, 30 days
Yesterday's Weather Data, Kentucky Climate Analysis, Kentucky Climate in Review (2005)


EUROPEAN CORN BORER not available
European Corn Borer Accumulation Map


ALFALFA WEEVIL not available
Alfalfa Weevil Accumulation Map


WESTERN CORN ROOTWORM not available
Western Corn Rootworm Accumulation Map


GIS ESTIMATES FOR JEFFERSON COUNTY
Valid July 29, 2013

The GIS estimates are derived by ARC/INFO GIS software for a
central point in the county.  The estimates are calculated from
from 29 weather stations in the Kentucky area.

Precipitation Estimates

                     Last 3   Last 7   Last 14   Last 30     Since
                       Days     Days      Days      Days     Jan 1
_______________________________________________________________________________
Precip Total           0.03     1.89      2.16      5.77     28.78
Precip Deviation      -0.41     0.87      0.13      1.47      1.66

Temperature Estimates

                     Last 3        Last 7       Last 14       Last 30
                       Days          Days          Days          Days
_____________________________________________________________________
Temp Average             71            74            79            77
Temp Deviation           -5            -2             3             1

Soil Temperature Estimates

                                Yesterday
_________________________________________
Avg 4" Sod Soil Temp   	               76

European Corn Borer Degree Days Accumulations

Degree Days                      Forecasted Accumulations
      Total          550      610      750     1660     1740
____________________________________________________________
       2140         5/10     5/13     5/21     6/28      7/1

Almanac Information
Wednesday April 26, 2017 the 116th Day of Year

---------------------------------------------------
SUN
Declination 13.910000
Distance 0.999718 AU
Rise 06:47 EDT Set 20:25 EDT
Transit Meridian 13:36 EDT
Civil Twilight Begins 06:20 EDT Ends 20:52 EDT

---------------------------------------------------
Normal Max/Min Temperature for Today: 72 / 49
---------------------------------------------------


Calculations made for central point in Kentucky
Time in ET -- and will vary due to location and
elevation -- Priddy

Sunrise/Sunset/Moonrise/Moonset Computation (USN)
TEMPERATURE is not available
Yesterday's U.S. Highs, Lows , KY's Highs/Lows/Precip, Daily Weather Data, Hourly Weather Data
Historical Weather And Climate Facts For Today
APRIL 26TH
HISTORIC WEATHER EVENTS
...1834...
Killer frosts were reported in the Deep South. The frost was quite severe
around Huntsville AL, and highlighted a backward spring in the South that
year. (David Ludlum)
...1978...
An unusually strong occluded front swept out of the Gulf of Alaska and
produced the first April thunderstorm of record at Fairbanks. Pea size hail
fell northeast of Fairbanks from thunderstorms whose tops were less than
8000 feet. (The Weather Channel)
...1984...
Severe thunderstorms associated with an intense cyclone spawned a total of
forty-seven tornadoes in two days from Louisiana to Upper Michigan. The
tornadoes killed 16 persons and injured 259 others. (Storm Data)

UKAWC Briefing Page

Ag Weather Center, Department of Biosystems & Agricultural Engineering, University of Kentucky