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Jefferson County, KY Weather And Climate Synopsis

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Regional Hourly Observations For JEFFERSON County, Kentucky
Issued at 800 PM EST SAT JAN 19 2019
NORTH CENTRAL KENTUCKY
  
CITY           SKY/WX    TMP DP  RH WIND       PRES   REMARKS
LOUISVILLE/SDF FLURRIES  36  32  85 N24G37    29.53R WCI  24          
LOUISVILLE/LOU LGT SNOW  37  32  82 N13G36    29.53R WCI  29          
FORT KNOX      CLOUDY    34  33  96 NW18G25   29.53R WCI  23          

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 800pm EST, Saturday January 19, 2019

Across Kentucky...temperatures are near 30 degrees west, near 46 degrees central, and near 51 degrees east. Current sky conditions are light snow west, light rain central, and cloudy east. In the west, relative humidity is near 85%, and the dew point is near 26 degrees. In the central part of the state, relative humidity is near 89%, and the dew point is near 43 degrees. In the east, relative humidity is near 96%, and the dew point is near 50 degrees. Current drying conditions are poor west, poor central, and poor east. Tobacco stripping conditions are favorable west, favorable central, and favorable east. Winds are from the north at 23 mph with gusts at 33 mph west, where conditions are not favorable for spraying due to strong winds and light snow. The wind chill is near 17 degrees west. Winds are from the north at 13 mph central, where conditions are not favorable for spraying due to strong winds and light rain. Winds are variable at 5 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 54 degrees at London. The lowest temperature is 29 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: Sat Jan 19 15:14:24 EST 2019


This Hazardous Weather Outlook is for portions of Indiana, south
central Indiana, east central Kentucky, north central Kentucky,
northwest Kentucky, and south central Kentucky.

.DAY ONE...Tonight

Cold air will filter into the region with temperatures falling 
into the 20s overnight. A band of snow is expected to move through
the region and will bring significant snowfall to southern 
Indiana and parts of Kentucky. The area at most risk for 
significant snowfall will be in areas west of I-65 and north of 
I-64. Winter Storm Warnings and Winter Weather Advisories have 
been issued for the outlook area. Please see the Winter Weather 
Message product for more details.

Very hazardous driving conditions are expected late this evening
and into the overnight period.

.DAYS TWO THROUGH SEVEN...Sunday through Friday

The next weather system to affect the region looks to arrive 
around Wednesday bringing a round of rain and snow to the area.

.SPOTTER INFORMATION STATEMENT...

Spotters are asked to report precipitation type and snowfall 
amounts tonight and Sunday morning.

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 38 West and 28 Central, to 28 East. Dewpoints will range from 16 to 20 West, 10 to 14 Central, and 6 to 3 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 0 % of the area East should be expected. Lows Monday will fall to 17 West, 15 Central, and 10 East. Skies throughout the day will start out cloudy and end clear in the West, start cloudy and end partly cloudy Central, and start out 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 0 corn growing degree days West, 0 Central, and 0 East. Wind speeds in the morning and afternoon will be around 4 and 10 mph , respectively, West, 9 and 7 mph Central, and 9 and 4 mph East.

TUESDAY :
Highs across the state will range from 53 West and 53 Central, to 50 East. Dewpoints will range from 28 to 40 West, 19 to 31 Central, and11 to 23 East throughout the day. Rainfall amounts of 0.01-0.09 inches over 60 % 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 Tuesday will fall to 34 West, 26 Central, and 23 East. Skies throughout the day will start out partly cloudy and end cloudy in the West, start clear and end cloudy Central, and start out clear 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 2 corn growing degree days West, 2 Central, and 0 East. Wind speeds in the morning and afternoon will be around 13 and 18 mph , respectively, West, 8 and 18 mph Central, and 4 and 7 mph East.

WEDNESDAY :
Highs across the state will range from 40 West and 44 Central, to 54 East. Dewpoints will range from 32 to 25 West, 31 to 29 Central, and 36 to 39 East throughout the day. Rainfall amounts of 1.00-1.99 inches over 100% of the area West, 0.50-0.99 inches over 100% of the area Central, and 0.50-0.99 inches over 80 % of the area East should be expected. Lows Wednesday will fall to 36 West, 40 Central, and 45 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 0 corn growing degree days West, 0 Central, and 2 East. Wind speeds in the morning and afternoon will be around 23 and 12 mph , respectively, West, 24 and 14 mph Central, and 12 and 8 mph East.

THURSDAY :
Highs across the state will range from 42 West and 39 Central, to 39 East. Dewpoints will range from 21 to 26 West, 20 to 22 Central, and29 to 21 East throughout the day. Rainfall amounts of 0.01-0.09 inches over 50 % of the area West, 0.25-0.49 inches over 90 % of the area Central, and 1.00-1.99 inches over 100% of the area East should be expected. Lows Thursday will fall to 25 West, 25 Central, and 30 East. Skies throughout the day will start out 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 no stress West, no stress Central, and no stress East. There will be 0 corn growing degree days West, 0 Central, and 0 East. Wind speeds in the morning and afternoon will be around 10 and 11 mph , respectively, West, 11 and 11 mph Central, and 7 and 7 mph East.

FRIDAY :
Highs across the state will range from 29 West and 27 Central, to 30 East. Dewpoints will range from 22 to 12 West, 20 to 11 Central, and 17 to 18 East throughout the day. Rainfall amounts of 0.00-0.01 inches over 60 % of the area West, 0.00-0.01 inches over 50 % of the area Central, and 0.00-0.01 inches over 50 % of the area East should be expected. Lows Friday will fall to 26 West, 25 Central, and 23 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 0 corn growing degree days West, 0 Central, and 0 East. Wind speeds in the morning and afternoon will be around 7 and 20 mph , respectively, West, 7 and 17 mph Central, and 6 and 8 mph East.

SATURDAY :
Highs across the state will range from 26 West and 23 Central, to 21 East. Dewpoints will range from 11 to 7 West, 4 to 5 Central, and 4 to -3 East throughout the day. Rainfall amounts of 0.00-0.01 inches over 40 % of the area West, 0.00-0.01 inches over 60 % of the area Central, and 0.00-0.01 inches over 60 % of the area East should be expected. Lows Saturday will fall to 18 West, 10 Central, and 9/ East. Skies throughout the day will start out 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 no stress West, no stress Central, and no stress East.There will be 0 corn growing degree days West, 0 Central, and 0 East. Wind speeds in the morning and afternoon will be around 20 and 13 mph, respectively, West, 19 and 15 mph Central, and 6 and 8 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 
                   JAN 25-29 JAN 27-FEB 2    JAN       JAN-MAR                      
                 -----------  -----------  --------  ---------
   Temperature:      Below        Below      Below      Below                      
 Precipitation:     Normal        Below      Below      Below                      

....  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: VERY MOIST SPELL      (PDSI=   3.92)
Rainfall Needed:  0.00 inches ABOVE NORMAL


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

Current Short-term Crop Moisture Status: More Dry Weather Needed, Work Delayed        (CMI=   2.10)
Change From Previous Week: DRIER      SOILS ( -1.10)

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 41 in the West to 37 in the East. Departure from normal high temperatures ranged from -2 degrees from normal in the West to -2 degrees from normal in the East. Low temperatures averaged from 35 degrees in the West to 31 degrees in the East. Departure from normal low temperature ranged from +11 degrees from normal in the West to +9 degrees from normal in the East.

Precipitation (liq. equ.) for the period totaled 0.85 inches statewide which was + 0.13 inches from normal. Precipitation totals by climate division, West 0.66 inches, Central 0.79 inches, Bluegrass 0.94 inches and East 0.98 inches, which was -0.06, + 0.01, + 0.32 and + 0.21 inches respectively from normal. By station, precipitation totals ranged from a low of 0.49 inches at Princeton to a high of 1.29 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)


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 January 19, 2019 the 19th Day of Year

---------------------------------------------------
SUN
Declination -20.170000
Distance 0.999725 AU
Rise 07:52 EST Set 17:47 EST
Transit Meridian 12:49 EST
Civil Twilight Begins 07:24 EST Ends 18:15 EST

---------------------------------------------------
Normal Max/Min Temperature for Today: 41 / 22
---------------------------------------------------


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
JANUARY 19TH
HISTORICAL WEATHER FACTS
...1810...
The famous "cold day" in New England. Gale force winds wrecked homes, and
accompanied a sudden overnight drop in temperature of 50 degrees. Tradgedy
struck Sanbornton NH where three chidren froze to death. (David Ludlum)
...1933...
Giant Forest CA received 60 inches of snow in just 24 hours, a state
record, and the second highest 24 hour total of record for the U.S. (David
Ludlum)
...1977...
Snowflakes were observed at Homestead and Miami Beach in extreme southern
Florida. (David Ludlum)
...1987...
A storm tracking toward the northeastern U.S. produced up to 14 inches of
snow in northern Indiana. Peru IN reported a foot of snow. Six cities in
Florida reported new record high temperatures for the date. The afternoon
high of 88 degrees at Miami equalled their record for the month of January.
(National Weather Summary) (Storm Data)
...1988...
A powerful storm hit the central U.S. producing blizzard conditions in the
Central High Plains, and severe thunderstorms in the Lower Mississippi
Valley. Snowfall totals ranged up to 36 inches at Wolf Creek Pass CO, with
31 inches at Elsmere NE. Tornadoes claimed five lives in Tennessee, and a
tornado at Cullman AL injured 35 persons. (National Weather Summary) (Storm
Data)
...1989...
The high temperature for the day at Fairbanks AK was a frigid 41 degrees
below zero, and the morning low of 24 degrees below zero at Anchorage AK
was their coldest reading in fourteen years. (National Weather Summary)
...1990...
Thunderstorms produced large hail and damaging winds in eastern Texas and
Louisiana. Tornadoes at Garland TX and Apple Springs TX each injured one
person. Heavy snow spread from the Southern and Central Rockies into the
Great Plains. Storm totals in New Mexico reached 36 inches at Gascon.
Totals in the Central Plains ranged up to 15 inches near McCook NE and
Garden City KS. (National Weather Summary) (Storm Data)
UKAWC Briefing Page

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