1st Responders/1st Detectors/Storm Spotters Weather Summary for Jefferson County, KY

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Jefferson County, KY Hazardous Weather Outlook Webcast
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UKAWC 1st Detectors/1st Responders Precision Weather Forecast For JEFFERSON County, Kentucky
(based on the NWS County Digital Forecast)

ISSUED AT 09:00 UTC ON THURSDAY MAY 23 2019
DAY THURSDAY
EDT 3HR 6A 7A 8A 9A 10A 11A NOON 1P 2P 3P 4P 5P 6P 7P
MAX/MIN -- -- 67° -- -- -- -- -- -- -- -- -- -- 85°
TEMP 68° 70° 70° 72° 74° 76° 79° 81° 81° 83° 85° 83° 83° 83°
SKY COVER 68% 69% 63% 63% 62% 68% 70% 66% 61% 62% 66% 67% 70% 68%
Clouds
DEW PT 63° 63° 63° 65° 67° 67° 68° 70° 70° 70° 70° 70° 70° 70°
RH 81% 81% 78% 78% 76% 70% 71% 69% 66% 62% 61% 62% 63% 64%
POP 12HR -- -- 19% -- -- -- -- -- -- -- -- -- -- --
RAIN/SNOW (liq.equ) -- -- 0.01in -- -- -- -- -- 0.05in -- -- -- -- --
SNOWFALL -- -- 0in -- -- -- -- -- 0in -- -- -- -- --
WIND SPEED(MPH) 7 7 7 7 8 10 13 13 13 13 13 10 9 8
WIND Gust(MPH) 10 10 15 16 16 21 23 23 23 23 23 22 17 15
WIND DIR S S S S S SW S S SW S S SW S S
DEW Mod Dew Lgt Dew Lgt Dew Lgt Dew Lgt Dew -- -- -- -- -- -- -- -- --
HeatIndex 68 70 70 72 74 76 79 84 85 88 89 88 88 87
Rain -- -- -- -- -- -- -- -- -- -- -- -- Slight Chance --
Rain Showers -- Slight Chance Chance Chance Chance Chance Slight Chance -- Slight Chance -- Slight Chance Slight Chance -- --
Thunder Storm -- Slight Chance Slight Chance Slight Chance Slight Chance Chance Slight Chance -- Slight Chance -- Isolated Isolated -- --
WIND CHILL -- -- -- -- -- -- -- -- -- -- -- -- -- --
SPRAY COND
DRY COND
LIVESTOCK HEATSTRESS 67.04 68.83 68.64 70.40 71.99 73.16 75.78 77.21 76.85 77.94 79.38 77.94 78.08 78.21



DAY FRIDAY SATURDAY SUNDAY MONDAY TUESDAY WEDNESDAY
EDT 6HR 8P 9P 10P 11P MIDN 1A 2A 3A 4A 5A 6A 7A 8A 9A 10A 11A NOON 1P 2P 3P 4P 5P 8P 11P 2A 5A 8A 11A 2P 5P 8P 2A 8A 2P 8P 2A 8A 2P 8P 2A 8A 2P 8P 2A 8A 2P 8P
MAX/MIN -- -- -- -- -- -- -- -- -- -- -- -- 67° -- -- -- -- -- -- -- -- 90° -- -- -- -- 67° -- -- 90° -- -- 67° 86° -- -- 65° 85° -- -- 65° 85° -- -- 67° 83° --
TEMP 79° 79° 76° 72° 72° 70° 70° 68° 68° 67° 67° 68° 70° 72° 76° 79° 83° 85° 88° 90° 90° 90° 83° 72° 70° 67° 70° 85° 88° 90° 81° 68° 70° 85° 79° 67° 68° 83° 79° 67° 67° 83° 83° 70° 70° 81° 79°
SKY COVER 61% 64% 62% 59% 56% 58% 57% 57% 56% 56% 56% 55% 55% 53% 52% 51% 46% 51% 40% 38% 36% 34% 13% 11% 29% 42% 30% 28% 34% 24% 23% 30% 42% 63% 74% 71% 63% 63% 66% 58% 52% 47% 30% 31% 44% 58% 56%
Clouds
DEW PT 70° 70° 70° 68° 67° 67° 67° 67° 67° 67° 67° 67° 67° 67° 68° 68° 68° 67° 67° 67° 67° 67° 67° 67° 65° 65° 65° 65° 65° 65° 65° 65° 65° 67° 67° 65° 63° 67° 67° 63° 63° 65° 65° 61° 63° 63° 63°
RH 71% 74% 81% 87% 86% 90% 93% 96% 96% 97% 100% 96% 89% 83% 78% 68% 60% 55% 51% 47% 46% 47% 60% 81% 83% 96% 84% 53% 48% 44% 56% 86% 81% 52% 64% 90% 84% 56% 67% 83% 83% 54% 56% 73% 80% 54% 56%
POP 12HR 33% -- -- -- -- -- -- -- -- -- -- -- 21% -- -- -- -- -- -- -- -- -- 24% -- -- -- 13% -- -- -- 12% -- 6% -- 35% -- 25% -- 30% -- 12% -- 19% -- 6% -- 23%
RAIN/SNOW (liq.equ) 0.11in -- -- -- -- -- 0.01in -- -- -- -- -- 0.05in -- -- -- -- -- 0.00in -- -- -- 0.00in -- 0.00in -- 0.00in -- 0.00in -- 0.00in -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- --
SNOWFALL 0in -- -- -- -- -- 0in -- -- -- -- -- 0in -- -- -- -- -- 0in -- -- -- 0in -- 0in -- 0in -- 0in -- 0in -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- --
WIND SPEED(MPH) 7 5 2 2 2 2 1 2 2 1 1 1 1 2 5 5 6 6 7 7 7 7 5 2 5 5 6 8 10 10 7 6 7 8 7 2 6 7 7 5 7 9 8 8 9 14 10
WIND DIR W S S SW SE SE SW SE SE S SE SE SE S SW SW SW SW W SW SW SW SW S S S S SW SW SW SW SW SW SW W SW SW SW W S S SW SW S SW SW SW
HeatIndex 83 79 76 72 72 70 70 68 68 67 67 68 70 72 76 82 87 89 91 93 93 93 86 72 70 67 70 87 90 92 83 68 70 88 82 67 68 86 79 67 67 86 85 70 70 82 81
Rain -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- --
Rain Showers -- -- -- -- Slight Chance Slight Chance -- -- -- Slight Chance Slight Chance Slight Chance Slight Chance Slight Chance Slight Chance Slight Chance Slight Chance Slight Chance -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- Chance Chance -- Chance Chance -- -- Slight Chance -- -- -- Slight Chance Slight Chance Chance
Thunder Storm -- -- -- -- -- -- -- -- -- -- -- -- Slight Chance Slight Chance Slight Chance Slight Chance Slight Chance Slight Chance -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- Chance Slight Chance -- Slight Chance Chance -- -- Slight Chance -- -- -- Slight Chance Slight Chance --
WIND CHILL -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- --
SPRAY COND
DRY COND
LIVESTOCK HEATSTRESS 75.78 76.11 74.20 71.06 70.98 69.38 69.57 67.80 67.80 66.86 67.00 67.80 69.32 70.77 73.92 75.44 77.68 78.52 80.13 80.91 80.73 80.91 77.68 70.62 68.95 66.82 69.01 78.23 79.65 80.39 75.63 67.29 68.83 78.08 75.00 66.55 67.19 77.14 75.33 66.23 66.23 76.88 77.14 68.34 68.77 75.38 74.11

Click on individual weather variable above in left-hand column (ie., TEMP, RH, QPF 12HR) to view state forecast maps






NWS 48 Hr. Forecast Maps,

Regional Hourly Observations For JEFFERSON County, Kentucky
Issued at 500 AM EDT THU MAY 23 2019
NORTH CENTRAL KENTUCKY
  
CITY           SKY/WX    TMP DP  RH WIND       PRES   REMARKS
LOUISVILLE/SDF CLOUDY    77  62  59 SW10      30.07R                  
LOUISVILLE/LOU FAIR      75  61  61 SW6       30.07R                  
FORT KNOX      FAIR      69  62  79 S7        30.09R                  


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.


Fire Weather Forecast For JEFFERSON County, KY
Provided by the National Weather Service:

Issued at: Thu May 23 05:05:01 EDT 2019

342 AM EDT Thu May 23 2019

                      Today        Tonight      Fri          

CLOUD COVER           PCldy        PCldy        PCldy        
PRECIP TYPE           Tstms        Tstms        Tstms        
CHANCE PRECIP (%)     40           30           20           
TEMP (24H TREND)      87 (+2)      64 (-5)      90           
RH % (24H TREND)      58 (+1)      100 (+5)     45           
20FTWND-VAL/AM(MPH)   S  8 G19                  Lgt/Var      
20FTWND-RDG/PM(MPH)   S  9 G19     Lgt/Var      SW  5        
PRECIP AMOUNT         0.14         0.07         0.01         
MIXING HGT(FT-AGL/MSL)5346                      7079         
TRANSPORT WND (MPH)   SW 23                     W 13         
VENT RATE (KT-FT)     105483                    85397        
DISPERSION            Excellent                 Good         
DSI                   SLGT UNSTBL  SLGT UNSTBL  SLGT UNSTBL  
LAL                   3            3            3            
HAINES INDEX          3            3            3            
ADI EARLY             35 FAIR      11 POOR      30 FAIR      
ADI LATE              74 GOOD      2 VERY POOR  0 VERY POOR  
MAX LVORI EARLY       4            6            8            
MAX LVORI LATE        2            10           3            

REMARKS...ADI IS ATMOSPHERIC DISPERSION INDEX BY LAVDAS.        
LVORI IS LOW VISIBILITY OCCURRENCE RISK INDEX.

.SATURDAY...Partly cloudy. Lows in the upper 60s. Highs in the
upper 80s. South winds around 5 mph. 
.SUNDAY...Partly cloudy. A 50 percent chance of showers and
thunderstorms. Lows in the upper 60s. Highs in the upper 80s.
Southwest winds around 5 mph. 
.MONDAY...Mostly cloudy. Lows in the mid 60s. Highs in the upper
80s. Southwest winds up to 5 mph. 
.TUESDAY...Partly cloudy. Lows in the upper 60s. Highs in the
upper 80s. Southwest winds 5 to 10 mph. 
.WEDNESDAY...Partly cloudy. Chance of showers. Lows in the mid
60s. Highs in the mid 80s. Southwest winds 5 to 15 mph. 

SPC's Fire Weather Web Tool (Excellent!), SPC's Fire Weather Outlooks, NWS Fire Weather WEB, Fire Danger Class Map,
Keetch-Byram Drought Index, ROMAN Web, Haines Index ,
WFAS's 10-hr Dead Fuel Moist., WFAS's 100-hr Dead Fuel Moist., Probablity of Ignition, Visual blackness Map, Palmer Drought Index, HPC's Rainfall Forecast Maps


Hazardous Weather Outlook For JEFFERSON County, Kentucky
345 AM EDT Thu May 23 2019 /245 AM CDT Thu May 23 2019/

 DAY ONE  Today and Tonight.

An approaching cold front will bring chances of scattered storms 
this afternoon mainly north of I64 with locally gusty winds being the
main threat. 


 DAYS TWO THROUGH SEVEN  Friday through Wednesday.

Isolated to widely scattered storms are forecast Friday afternoon 
through Tuesday. The best coverage appears to be on Friday morning and
then again on Sunday as a couple of frontal boundaries approach the 
region and provide focus for storm development. The main threats with
these storms will be brief heavy rainfall and gusty winds.

 SPOTTER INFORMATION STATEMENT  

Spotter activation is not anticipated.

Latest JEFFERSON County, Kentucky Watches, Warnings and Advisories.
Additional Drought Info.: UKAWC Drought Page, Kentucky Drought Watch


7-Day Forecast For JEFFERSON County, KY

TODAY
Partly cloudy with a 40 percent chance of showers and thunderstorms. Highs in the upper 80s. South winds 5 to 15 mph.

TONIGHT
Partly cloudy with chance of thunderstorms and slight chance of showers. Lows in the upper 60s. South winds up to 5 mph with gusts to around 20 mph. Chance of precipitation 30 percent.

FRIDAY
Partly cloudy with a 20 percent chance of showers and thunderstorms. Highs in the lower 90s. Southwest winds up to 10 mph.

FRIDAY NIGHT
Mostly clear. Lows in the upper 60s. Southwest winds around 5 mph.

SATURDAY
Partly cloudy. Highs in the lower 90s. Southwest winds 5 to 10 mph.

SATURDAY NIGHT
Mostly clear. Lows in the upper 60s.

SUNDAY
Partly cloudy with a 40 percent chance of showers and thunderstorms. Highs in the upper 80s.

SUNDAY NIGHT
Partly cloudy with a 20 percent chance of showers and thunderstorms. Lows in the upper 60s.

MEMORIAL DAY
Partly cloudy with a 20 percent chance of showers and thunderstorms. Highs in the upper 80s.

MONDAY NIGHT
Partly cloudy. Lows in the upper 60s.

TUESDAY
Partly cloudy. Highs in the upper 80s.

TUESDAY NIGHT
Partly cloudy. Lows in the upper 60s.

WEDNESDAY
Partly cloudy with chance of showers and slight chance of thunderstorms. Highs in the mid 80s. Chance of precipitation 30 percent.

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