Jefferson County, KY Weather And Climate Synopsis

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Palmer Drought Index

Crop Moisture Index
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NWS: Calculated Soil Moisture.
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A joint service of the UK Ag Weather Center and the National Weather Service.

Updated Tuesday Evening, December 18, 2018

...Fair Today, Widespread Rain At Mid-Week...

Mostly clear skies will push lows back into the low to middle 30s tonight. Highs then rise into the middle 50s to low 60s tomorrow with continued dry conditions. Enjoy the day as wet weather returns for the second half of the work week. Rain will be widespread at times and a mix with snow cannot be ruled out on Friday. Otherwise, dry conditions then return for the weekend, but with cooler conditions in place.

Kentucky Weather Forecast

Western KY:
Central KY:
Eastern KY:

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Regional Hourly Observations For JEFFERSON County, Kentucky
Issued at 1200 AM EST WED DEC 19 2018
LOUISVILLE/SDF FAIR      38  29  70 E5        30.11F WCI  34          
LOUISVILLE/LOU FAIR      32  27  81 CALM      30.11F                  
FORT KNOX      FAIR      33  29  84 E6        30.09F WCI  28          

KY Round-up, Current Temperatures, Dewpoint, Rh, Wind, Regional Obs., Station Model, NWS Louisville
Meteograms: Paducah , Evansville , Bowling Green , Hopkinsville , Frankfort , Louisville , Lexington , Covington , Jackson , London , About Meteograms

Current Agriculture, Lawn & Garden Weather Conditions in Kentucky
Based on observations at 1200am EST, Wednesday December 19, 2018

Across Kentucky...temperatures are near 33 degrees west, near 34 degrees central, and near 35 degrees east. Current sky conditions are fair west, fair central, and fair east. In the west, relative humidity is near 81%, and the dew point is near 28 degrees. In the central part of the state, relative humidity is near 75%, and the dew point is near 27 degrees. In the east, relative humidity is near 66%, and the dew point is near 25 degrees. Current drying conditions are poor west, fair central, and fair east. Tobacco stripping conditions are favorable west, marginal central, and marginal east. Winds are calm west, where conditions are favorable for spraying. Winds are calm central, where conditions are favorable for spraying. Winds are from the northeast at 3 mph east, where conditions are favorable for spraying. The livestock cold stress index is in the no stress category west, no stress category central, and no stress category east. Based on current available observations, the highest temperature is 38 degrees at Louisville International. The lowest temperature is 28 degrees at Frankfort.

List of Agriculture, Lawn & Garden Weather Observations in Kentucky

UKAWC Radar, NWS Radar (NEW!), SPC Radar, SkyWarn, NEXRAD,
Hazardous Weather Outlook For JEFFERSON County, Kentucky
330 PM EST Tue Dec 18 2018 /230 PM CST Tue Dec 18 2018/

 DAY ONE  Tonight.

No hazardous weather is expected at this time.

 DAYS TWO THROUGH SEVEN  Wednesday through Monday.

No hazardous weather is expected at this time.


Spotter activation is not expected at this time.

NWS Severe Weather Map , Convective Outlook

7-Day Forecast For JEFFERSON County, KY
328 PM EST Tue Dec 18 2018

Mostly clear. Lows in the lower 30s. Southeast winds up to 5 mph.

Partly cloudy. Highs in the upper 50s. South winds up to 5 mph.

Mostly cloudy with a 50 percent chance of rain. Lows in the mid 40s. South winds around 5 mph.

Rain. Highs around 50. East winds around 5 mph. Chance of rain 80 percent.

Rain. Lows around 40. North winds 5 to 10 mph. Chance of rain 80 percent.

Rain likely. Highs around 40. Chance of rain 70 percent.

Partly cloudy. Lows in the upper 20s.

Partly cloudy. Highs in the mid 40s.

Partly cloudy. Lows in the lower 30s.

Partly cloudy. Highs in the upper 40s.

Partly cloudy. Lows in the lower 30s.

Partly cloudy. Highs in the mid 40s.

Partly cloudy. Lows in the mid 30s.

Partly cloudy with a 30 percent chance of rain. Highs in the upper 40s.

Day 1 Precip, Day 2, 5 Day Total, Days 1-5, ALL

Medium & Long Range Outlook For JEFFERSON County, Kentucky
                 6 TO 10 DAY  8 TO 14 DAY   30 DAY    90 DAY 
                   DEC 24-28 DEC 26-JAN 1    DEC   DEC18-FEB19                      
                 -----------  -----------  --------  ---------
   Temperature:      Above        Above      Above     Normal                      
 Precipitation:      Above        Above     Normal      Below                      

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

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

Hydrological Drought (PDSI) Situation:

Current Long-term Hydrological Moisture Status: EXTREME MOIST SPELL   (PDSI=   3.98)
Rainfall Needed:  0.00 inches ABOVE NORMAL

Crop Moisture (CMI) Situation:

Current Short-term Crop Moisture Status: Prospects Above Normal, Some Fields Too Wet  (CMI=   1.86)
Change From Previous Week: WETTER     SOILS (  0.32)

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
Kentucky Climate Summary
For the Period 12-11-2018 to 12-17-2018

Temperatures for the period averaged 44 degrees across the state which was 6 degrees warmer than normal and 12 degrees warmer than the previous period. High temperatures averaged from 53 in the West to 50 in the East. Departure from normal high temperatures ranged from 5 degrees warmer than normal in the West to 1 degrees warmer than normal in the East. Low temperatures averaged from 37 degrees in the West to 37 degrees in the East. Departure from normal low temperature ranged from 7 degrees warmer than normal in the West to 10 degrees warmer than normal in the East. The extreme high temperature for the period was 63 degrees at BOWLING GREEN APT and the extreme low was 11 degrees at MONTICELLO AWOS.

Precipitation (liq. equ.) for the period totaled 1.45 inches statewide which was 0.44 inches above normal and 143% of normal. Precipitation totals by climate division, West 2.02 inches, Central 0.99 inches, Bluegrass 1.21 inches and East 1.59 inches, which was 0.92, -0.12, 0.33 and 0.63 inches respectively from normal. By station, precipitation totals ranged from a low of 0.21 inches at SCOTTSVILLE 2W to a high of 3.41 inches at MORGANFIELD 4E.

Kentucky Climate Summaries: Last day, Last 3 days, 7 days, 14, 21, 30, 60, 90 days
Yesterday's Weather Data, Kentucky Climate in Review

Almanac Information
Wednesday December 19, 2018 the 353th Day of Year

Declination -23.420000
Distance 0.999725 AU
Rise 07:50 EST Set 17:21 EST
Transit Meridian 12:35 EST
Civil Twilight Begins 07:21 EST Ends 17:50 EST

Normal Max/Min Temperature for Today: 44 / 26

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)
What the Moon looks like right now (USN)

On This Day In

Weather History...

The Continental Army moved into encampment at Valley Forge amidst stormy
winds and piercing cold. A relatively moderate winter followed. (David
Temperatures rose to record warm readings of 67 at Louisville and 68 at 
Lexington. (NWS Louisville)
The Riverside Ranger Station in Yellowstone Park WY reported a low of 59
degrees below zero, a December record for the U.S. (David Ludlum) (The
Weather Channel)
A tornado, 200 yards in width, killed two persons along its 15-mile path
from near Waldo to near Bueana Vista in southwestern Arkansas. People from
one house were carried 250 yards, and cars were said to have been carried
600 yards. (The Weather Channel)
A record 83 inches of snow covered the ground at Flagstaff AZ. The heavy
snows inflicted great hardships on reservations. (David Ludlum)
Thunderstorms produced large hail and damaging winds in eastern Texas and
the Lower Mississippi Valley. Thunderstorms produced wind gusts to 90 mph
at Venus TX and Providence LA. Rain prevailed from the Southern Plains to
the Middle Mississippi Valley. Small stream flooding was reported around
Columbia MO. (The National Weather Summary) (Storm Data)
Low pressure and a trailing cold front in the central U.S. brought snow and
high winds to parts of the Rocky Mountain Region. Winds in Colorado gusted
to 67 mph at La Junta. Thunderstorms along the same cold front produced
wind gusts to 65 mph at Kansas City MO. (The National Weather Summary)
(Storm Data)
High winds and heavy snow plagued the northern and central Rockies.
Snowfall totals in Montana ranged up to 12 inches at Lincoln, and wind
gusts in Colorado reached 97 mph at Squaw Mountain. Twelve cities in the
north central U.S. reported record low temperatures for the date, including
Dickinson ND with a reading of 26 degrees below zero. Bismarck ND was the
cold spot in the nation with a morning low of 35 degrees below zero. (The
National Weather Summary) (Storm Data)
The World record high sea level pressure of 32.03" of Hg was set in Tosontsengel, 
Mongolia. (NWS)
UKAWC Briefing Page

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