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Jefferson County, KY Weather And Climate Synopsis

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Kentucky State Forecast

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Regional Hourly Observations For JEFFERSON County, Kentucky
Issued at 700 AM EDT SUN AUG 19 2018
NORTH CENTRAL KENTUCKY
  
CITY           SKY/WX    TMP DP  RH WIND       PRES   REMARKS
LOUISVILLE/SDF FAIR      71  69  93 N3        29.94R                  
LOUISVILLE/LOU FAIR      71  70  96 CALM      29.94R FOG              
FORT KNOX      FAIR      68  68 100 CALM      29.95S FOG              

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 700am EDT, Sunday August 19, 2018

Across Kentucky...temperatures are near 69 degrees west, near 67 degrees central, and near 69 degrees east. Current sky conditions are fair west, fair central, and cloudy east. In the west, relative humidity is near 96%, and the dew point is near 68 degrees. In the central part of the state, relative humidity is near 93%, and the dew point is near 65 degrees. In the east, relative humidity is near 96%, and the dew point is near 68 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. There is patchy fog across the state. Winds are calm west, where conditions are favorable for spraying. Winds are calm 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 71 degrees at Louisville International and Louisville Bowman. The lowest temperature is 64 degrees at Henderson.

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: Sun Aug 19 03:13:30 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
313 AM EDT Sun Aug 19 2018 /213 AM CDT Sun Aug 19 2018/

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

.DAY ONE...Today and Tonight.

Pockets of locally dense fog may reduce visibilities to a half mile
or less in a few spots this morning. 

.DAYS TWO THROUGH SEVEN...Monday through Saturday.

Thunderstorms are possible Monday into Tuesday. A few stronger storms
will produce gusty winds and locally heavy rainfall. 

.SPOTTER INFORMATION STATEMENT...

Spotters should report any high rainfall amounts, flooding, and 
strong wind gusts or damage Monday into Tuesday.

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 -

TUESDAY :
Highs across the state will range from 83 West and 83 Central, to 80 East. Dewpoints will range from 68 to 66 West, 71 to 67 Central, and 69 to 69 East throughout the day. Rainfall amounts of 0.01-0.09 inches over 50 % of the area West, 0.50-0.99 inches over 90 % of the area Central, and 0.50-0.99 inches over 90 % of the area East should be expected. Lows Tuesday will fall to 70 West, 72 Central, and 68 East. Skies throughout the day will start out partly 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 8 and 12 mph , respectively, West, 9 and 23 mph Central, and 2 and 8 mph East.

WEDNESDAY :
Highs across the state will range from 80 West and 79 Central, to 71 East. Dewpoints will range from 61 to 61 West, 63 to 56 Central, and63 to 59 East throughout the day. Rainfall amounts of 0.00-0.01 inches over 10 % of the area West, 0.00-0.01 inches over 20 % of the area Central, and 0.01-0.09 inches over 60 % of the area East should be expected. Lows Wednesday will fall to 63 West, 66 Central, and 63 East. Skies throughout the day will start out clear and end partly 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 22 corn growing degree days West, 22 Central, and 17 East. Wind speeds in the morning and afternoon will be around 10 and 8 mph , respectively, West, 23 and 12 mph Central, and 8 and 6 mph East.

THURSDAY :
Highs across the state will range from 80 West and 80 Central, to 73 East. Dewpoints will range from 56 to 57 West, 54 to 53 Central, and 54 to 53 East throughout the day. Rainfall amounts of 0.00-0.01 inches over 0 % of the area West, 0.00-0.01 inches over 0 % of the area Central, and 0.00-0.01 inches over 10 % of the area East should be expected. Lows Thursday will fall to 57 West, 59 Central, and 55 East. Skies throughout the day will start out clear and end clear in the West, start clear and end clear Central, and start out partly cloudy and end clear 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, 20 Central, and 14 East. Wind speeds in the morning and afternoon will be around 8 and 7 mph , respectively, West, 10 and 6 mph Central, and 3 and 2 mph East.

FRIDAY :
Highs across the state will range from 82 West and 82 Central, to 79 East. Dewpoints will range from 58 to 64 West, 56 to 61 Central, and55 to 59 East throughout the day. Rainfall amounts of 0.00-0.01 inches over 20 % of the area West, 0.00-0.01 inches over 10 % of the area Central, and 0.00-0.01 inches over 20 % of the area East should be expected. Lows Friday will fall to 59 West, 61 Central, and 58 East. Skies throughout the day will start out clear and end partly cloudy in the West, start clear and end clear Central, and start out clear and end clear 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 18 East. Wind speeds in the morning and afternoon will be around 4 and 8 mph , respectively, West, 6 and 9 mph Central, and 1 and 2 mph East.

SATURDAY :
Highs across the state will range from 87 West and 85 Central, to 80 East. Dewpoints will range from 64 to 70 West, 64 to 66 Central, and 61 to 64 East throughout the day. Rainfall amounts of 0.00-0.01 inches over 40 % of the area West, 0.00-0.01 inches over 50 % of the area Central, and 0.00-0.01 inches over 40 % of the area East should be expected. Lows Saturday will fall to 66 West, 67 Central, and 63 East. Skies throughout the day will start out partly cloudy and end partly cloudy in the West, start cloudy and end partly cloudy Central, and start out clear and end partly cloudy East. The maximum livestock stress category will be danger West, no stress Central, and no stress East. There will be 26 corn growing degree days West, 26 Central, and 22 East. Wind speeds in the morning and afternoon will be around 6 and 11 mph , respectively, West, 9 and 17 mph Central, and 2 and 2 mph East.

SUNDAY :
Highs across the state will range from 88 West and 87 Central, to 82 East. Dewpoints will range from 70 to 70 West, 66 to 67 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 50 % of the area East should be expected. Lows Sunday will fall to 71 West, 69 Central, and 65 East. Skies throughout the day will start out clear and end partly cloudy in the West, start partly cloudy and end partly cloudy Central, and start out partly 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, 28 Central, and 24 East. Wind speeds in the morning and afternoon will be around 5 and 7 mph, respectively, West, 7 and 10 mph Central, and 1 and 1 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 
                   AUG 24-28 AUG 26-SEP 1    AUG       AUG-OCT                      
                 -----------  -----------  --------  ---------
   Temperature:     Normal        Above      Above      Above                      
 Precipitation:      Below        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=  -0.27)
Rainfall Needed:  0.00 inches ABOVE NORMAL


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

Current Short-term Crop Moisture Status: Moisture Adequate For Present Needs          (CMI=   0.06)
Change From Previous Week: WETTER     SOILS (  0.14)

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 88 in the West to 83 in the East. Departure from normal high temperatures ranged from +0 degrees from normal in the West to -2 degrees from normal in the East. Low temperatures averaged from 68 degrees in the West to 65 degrees in the East. Departure from normal low temperature ranged from +3 degrees from normal in the West to +2 degrees from normal in the East.

Precipitation (liq. equ.) for the period totaled 1.19 inches statewide which was + 0.35 inches from normal. Precipitation totals by climate division, West 0.52 inches, Central 1.83 inches, Bluegrass 1.83 inches and East 0.65 inches, which was -0.27, + 0.97, + 0.97 and -0.21 inches respectively from normal. By station, precipitation totals ranged from a low of 0.06 inches at Nashville to a high of 4.59 inches at Covington.

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)


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
Sunday August 19, 2018 the 231th Day of Year

---------------------------------------------------
SUN
Declination 12.450000
Distance 0.999717 AU
Rise 06:57 EDT Set 20:26 EDT
Transit Meridian 13:41 EDT
Civil Twilight Begins 06:31 EDT Ends 20:52 EDT

---------------------------------------------------
Normal Max/Min Temperature for Today: 85 / 62
---------------------------------------------------


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
///////////////////////////
AUGUST 19TH...HISTORIC WEATHER EVENTS
...1788...
A small but powerful hurricane inflicted great havoc upon forests along a
narrow track from New Jersey to Maine. A similar storm track today would
cause extreme disaster in the now populated area. (David Ludlum)
...1969...
'Never say die' Camille let loose a cloudburst in Virginia resulting in
flash floods and landslides which killed 151 persons and cause 140 million
dollars damage. Massies Hill VA received 27 inches of rain. (David Ludlum)
...1986...
The temperature at San Antonio TX soared to an all-time record high of 108
degrees. (Sandra and TI Richard Sanders - 1987)
...1987...
Thunderstorms moving out of southeastern Nebraska spread severe weather
into eastern Kansas and western Missouri during the day. Thunderstorms in
Nebraska produced hail three inches in diameter at Albion, and high winds
which downed a large tent at Waterloo injuring a dozen persons.
Thunderstorms in Kansas produced baseball size hail northwest of Topeka,
and wind gusts to 80 mph at Fulton. Ten persons were injured in a
thunderstorm at Princeton KS, and damage to crops in southern Franklin
County KS was estimated at 3.5 million dollars. (Storm Data) (The National
Weather Summary)
...1988...
Raleigh NC reported a record hot temperature reading of 103 degrees.
Afternoon thunderstorms in Oklahoma produced wind gusts to 75 mph in
southern Pittsburgh County. Thunderstorms in Indiana produced 4.50 inches
of rain at Morgantown. (Storm Data) (The National Weather Summary)
...1989...
Early morning thunderstorms deluged southeastern Delaware with six to ten
inches of rain in four to six hours, with local reports of 13 to 20 inches
of rain. Twenty-six major roads were closed or damaged, and fourteen
bridges were washed out. Flooding caused nearly four million dollars damage
to local businesses. (Storm Data) (The National Weather Summary)
...1999...A tornado (F0) touched down briefly near Crab Orchard (Lincoln, 
County, KY), rendering a trailer unsalvageable. The roof of the trailer was 
blown 200 feet. (NWS Louisville)

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