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Jefferson County, KY Weather And Climate Synopsis

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Regional Hourly Observations For JEFFERSON County, Kentucky
Issued at 900 AM EDT SAT MAY 26 2018
NORTH CENTRAL KENTUCKY
  
CITY           SKY/WX    TMP DP  RH WIND       PRES   REMARKS
LOUISVILLE/SDF PTSUNNY   77  68  73 SW9       29.89R                  
LOUISVILLE/LOU FAIR      77  71  82 S6        29.90R                  
FORT KNOX      PTSUNNY   73  70  88 S7        29.92R                  

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 900am EDT, Saturday May 26, 2018

Across Kentucky...temperatures are near 72 degrees west, near 74 degrees central, and near 71 degrees east. Current sky conditions are fair west, fair central, and fair east. In the west, relative humidity is near 90%, and the dew point is near 69 degrees. In the central part of the state, relative humidity is near 81%, and the dew point is near 68 degrees. In the east, relative humidity is near 87%, and the dew point is near 67 degrees. Current drying conditions are poor west, poor central, and poor east. The livestock heat stress category is no stress west, no stress central, and no stress east. Winds are calm west, where conditions are favorable for spraying. Winds are from the southwest at 9 mph central, where conditions are favorable for spraying. Winds are calm east, where conditions are favorable for spraying. Based on current available observations, the highest temperature is 77 degrees at Louisville International and Louisville Bowman. The lowest temperature is 70 degrees at Somerset and Hopkinsville.

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: Sat May 26 03:17:44 EDT 2018

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
317 AM EDT Sat May 26 2018 /217 AM CDT Sat May 26 2018/

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

.DAY ONE...Today and Tonight.

Isolated to scattered thunderstorms will be possible today as an
upper level disturbance moves through the region. Lightning and 
locally heavy rainfall will be the main threats with any of the 
storms. 

.DAYS TWO THROUGH SEVEN...Sunday through Friday.

Thunderstorms will be possible each afternoon and evening through the
period. Any storm will be capable of producing torrential rainfall,
gusty winds, and frequent lightning. Locally heavy rainfall may lead
to localized flooding issues in some areas.

.SPOTTER INFORMATION STATEMENT...

Spotter activation is not expected at this time.

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 -

MONDAY :
Highs across the state will range from 86 West and 86 Central, to 79 East. Dewpoints will range from 68 to 66 West, 66 to 65 Central, and 63 to 64 East throughout the day. Rainfall amounts of 0.00-0.01 inches over 20 % of the area West, 0.00-0.01 inches over 30 % of the area Central, and 0.10-0.24 inches over 70 % of the area East should be expected. Lows Monday will fall to 70 West, 72 Central, and 66 East. Skies throughout the day will start out clear and end cloudy in the West, start partly 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 28 corn growing degree days West, 29 Central, and 22 East. Wind speeds in the morning and afternoon will be around 4 and 7 mph , respectively, West, 5 and 7 mph Central, and 0 and 1 mph East.

TUESDAY :
Highs across the state will range from 84 West and 85 Central, to 83 East. Dewpoints will range from 66 to 67 West, 65 to 67 Central, and62 to 65 East throughout the day. Rainfall amounts of 0.10-0.24 inches over 60 % of the area West, 0.01-0.09 inches over 50 % of the area Central, and 0.01-0.09 inches over 60 % of the area East should be expected. Lows Tuesday will fall to 68 West, 70 Central, and 64 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 26 corn growing degree days West, 28 Central, and 24 East. Wind speeds in the morning and afternoon will be around 5 and 9 mph , respectively, West, 6 and 7 mph Central, and 1 and 1 mph East.

WEDNESDAY :
Highs across the state will range from 86 West and 85 Central, to 83 East. Dewpoints will range from 66 to 68 West, 65 to 68 Central, and 64 to 65 East throughout the day. Rainfall amounts of 0.10-0.24 inches over 50 % of the area West, 1.00-1.99 inches over 70 % of the area Central, and 0.10-0.24 inches over 60 % of the area East should be expected. Lows Wednesday will fall to 68 West, 70 Central, and 66 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 27 corn growing degree days West, 28 Central, and 24 East. Wind speeds in the morning and afternoon will be around 6 and 8 mph , respectively, West, 11 and 15 mph Central, and 1 and 6 mph East.

THURSDAY :
Highs across the state will range from 90 West and 89 Central, to 85 East. Dewpoints will range from 68 to 69 West, 69 to 67 Central, and65 to 66 East throughout the day. Rainfall amounts of 0.10-0.24 inches over 50 % of the area West, 0.10-0.24 inches over 60 % of the area Central, and 0.25-0.49 inches over 70 % of the area East should be expected. Lows Thursday will fall to 70 West, 71 Central, and 67 East. Skies throughout the day will start out partly cloudy and end partly 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 danger West, danger Central, and no stress East. There will be 28 corn growing degree days West, 28 Central, and 26 East. Wind speeds in the morning and afternoon will be around 6 and 12 mph , respectively, West, 10 and 14 mph Central, and 3 and 5 mph East.

FRIDAY :
Highs across the state will range from 90 West and 89 Central, to 85 East. Dewpoints will range from 68 to 69 West, 69 to 68 Central, and 64 to 65 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 60 % of the area East should be expected. Lows Friday will fall to 70 West, 73 Central, and 67 East. Skies throughout the day will start out partly cloudy and end clear in the West, start partly cloudy and end partly cloudy Central, and start out cloudy and end partly cloudy East. The maximum livestock stress category will be danger West, danger Central, and no stress East. There will be 28 corn growing degree days West, 30 Central, and 26 East. Wind speeds in the morning and afternoon will be around 8 and 9 mph , respectively, West, 13 and 13 mph Central, and 3 and 2 mph East.

SATURDAY :
Highs across the state will range from 88 West and 86 Central, to 81 East. Dewpoints will range from 66 to 67 West, 67 to 65 Central, and 63 to 63 East throughout the day. Rainfall amounts of 0.00-0.01 inches over 20 % of the area West, 0.00-0.01 inches over 20 % of the area Central, and 0.00-0.01 inches over 40 % of the area East should be expected. Lows Saturday will fall to 68 West, 71 Central, and 66 East. Skies throughout the day will start out clear and end clear in the West, start clear and end partly cloudy Central, and start out cloudy and end partly cloudy East. The maximum livestock stress category will be danger West, no stress Central, and no stress East.There will be 27 corn growing degree days West, 28 Central, and 24 East. Wind speeds in the morning and afternoon will be around 7 and 7 mph, respectively, West, 10 and 9 mph Central, and 1 and 3 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 31-JUN 4  JUN 2-JUN 8    MAY       MAY-JUL                      
                 -----------  -----------  --------  ---------
   Temperature:      Above        Above      Above      Above                      
 Precipitation:      Above       Normal      Below      Above                      

....  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=   1.63)
Rainfall Needed:  0.00 inches ABOVE NORMAL


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

Current Short-term Crop Moisture Status: Favorable For Normal Growth And Fieldwork    (CMI=   0.25)
Change From Previous Week: DRIER      SOILS ( -0.50)

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 84 in the West to 82 in the East. Departure from normal high temperatures ranged from +2 degrees from normal in the West to +5 degrees from normal in the East. Low temperatures averaged from 66 degrees in the West to 63 degrees in the East. Departure from normal low temperature ranged from +8 degrees from normal in the West to +7 degrees from normal in the East.

Precipitation (liq. equ.) for the period totaled 1.37 inches statewide which was + 0.31 inches from normal. Precipitation totals by climate division, West 1.22 inches, Central 1.25 inches, Bluegrass 2.00 inches and East 1.17 inches, which was + 0.11, + 0.14, + 0.98 and + 0.18 inches respectively from normal. By station, precipitation totals ranged from a low of 0.12 inches at Bristol to a high of 3.22 inches at Nolin Lake.

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


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
Saturday May 26, 2018 the 146th Day of Year

---------------------------------------------------
SUN
Declination 21.290000
Distance 0.999716 AU
Rise 06:20 EDT Set 20:52 EDT
Transit Meridian 13:35 EDT
Civil Twilight Begins 05:51 EDT Ends 21:21 EDT

---------------------------------------------------
Normal Max/Min Temperature for Today: 81 / 58
---------------------------------------------------


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
/////////////////////////
MAY 26TH...HISTORIC WEATHER EVENTS
...1771...
A famous Virginia flood occurred as heavy rains in the mountains brought
all rivers in the state to record high levels. (Sandra and TI Richard
Sanders - 1987)
...1894...
A tornado (unofficially F2) moved along a five mile long path 
east of Jeffersonville IN (Clark County). The Louisville 
weather office's log book simply read, Partly cloudy, and 
threatening during the greater portion of the day. Shower, 
11.56am12.04 pm; amount, .05. While rain was falling, a few 
indistinct, distant peals of thunder were heard. (NWS Louisville)
...1917...
A tornado touched down near Louisiana MO about noon and remained on the
ground for a distance of 293 miles, finally lifting seven hours and twenty
minutes later in eastern Jennings County IN. The twister cut a swath of
destruction two and a half miles wide through Mattoon IL. There were 101
persons killed in the tornado, including 53 at Mattoon, and 38 at
Charleston IL. Damage from the storm totalled 2.5 million dollars. (David
Ludlum)
...1965...
An F2 tornado was spotted in Simpson County. (NWS Louisville)
...1967...
A slow moving nor-easter battered New England with high 
winds, heavy rain, and record late season snow on this day. 
Winds 70 to 90 mph in gusts occurred along the coast. Over 7 
inches of rain fell at Nantucket, Massachusetts with 6.57 
inches falling in 24 hours to set a new 24 hour rainfall 
record. 24.9 inches of snow fell at Mount Washington, New 
Hampshire to set a new May snowfall record. (NWS Louisville)
...1968...
An F2 tornado struck Smiths Grove (Warren County). A barn was 
destroyed and another damaged. (NWS Louisville)
...1989...
A tornado produced F1 damage along a four mile long path 
through Allen County, resulting in a quarter million dollars 
in damage. An F1 tornado was on the ground for 6 miles in 
Simpson County. (NWS Louisville)
...1996...
Lightning struck and damaged two homes in Louisville. (NWS Louisville)




	
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