141
FNUS73 KLMK 211756
FWSLMK
SPOT FORECAST FOR FRENCH...USDA FOREST SERVICE
NATIONAL WEATHER SERVICE LOUISVILLE KY
156 PM EDT TUE APR 21 2026
FORECAST IS BASED ON IGNITION TIME OF 0000 EDT ON APRIL 22.
IF CONDITIONS BECOME UNREPRESENTATIVE...CONTACT THE NATIONAL WEATHER
SERVICE.
DISCUSSION
A WEAK FRONTAL BOUNDARY IS EXPECTED TO SAG SOUTHWARD
THROUGH CENTRAL INDIANA, AND DOWN INTO NORTHERN KY AND SOUTHERN OHIO
ON WEDNESDAY. ISOLATED TO WIDELY SCATTERED SHOWERS ARE EXPECTED TO
DEVELOP ALONG THIS FRONT, BUT DO LOOK TO STAY TO THE NORTH AND EAST
OF YOUR SPOT FORECAST LOCATION. OVERALL, LOOKS LIKE A GOOD DAY TO
BURN AS TEMPERATURES WARM INTO THE UPPER 70S, MINIMUM RELATIVE
HUMIDITY VALUES FALL INTO THE UPPER 30 AND LOW 40 PERCENT RANGE.
IN ADDITION, PRETTY DEEP BOUNDARY LAYER MIXING WILL COMBINE WITH
FAVORABLE TRANSPORT WINDS TO YIELD EXCELLENT WSW TO ENE DISPERSION
THROUGH THE AFTERNOON. WILL NOT THAT ANY SMOKE THAT CAN'T GET
DISPERSED COULD IMPACT S COUNTY ROAD 550 W.
DID WANT TO MENTION THAT OUR ANTECEDENT DRY AIRMASS IN PLACE WILL
BE FAVORABLE FOR ANY SHOWER OR STORM TO COLLAPSE AS THEY APPROACH
OUR REGION ON WEDNESDAY. EVEN THOUGH THESE SHOWERS OR STORMS MAY NOT
DIRECTLY AFFECT THE AREA, THIS IS THE TYPE OF ENVIRONMENT WHERE COOL
OUTFLOW COULD BRIEFLY CHANGE THE WIND DIRECTION IF IT MAKES IT TO YOU.
IF YOU DO BURN ON WEDNESDAY, IT WOULD BE A GOOD IDEA TO CALL OUR
OFFICE (502-968-5195) SO WE CAN MONITOR THE SITE FOR ANY POTENTIAL
OUTFLOW COMING FROM THE NE.
REST OF TONIGHT
SKY/WEATHER.........MOSTLY CLEAR (15-25 PERCENT).
TEMPERATURE.........AROUND 57.
RH HUMIDITY.........68 PERCENT.
WIND (20 FT)........SOUTHWEST WINDS AROUND 5 MPH.
MIXING HEIGHT.......400 FT AGL.
TRANSPORT WINDS.....SOUTHWEST 16 TO 17 MPH.
SMOKE DISPERSAL.....POOR (6300 KNOT-FT).
LVORI...............3.
ADI.................7 TO 8.
TIME (EDT) MIDNGT 2 AM 4 AM
SKY (%).........19 20 25
WEATHER COV.....
WEATHER TYPE....NONE NONE NONE
TSTM COV........
TEMP............63 62 61
RH..............48 51 55
20 FT WIND......SW 6 SW 4 SW 4
20 FT WIND GUST.13 11 11
MIX HGT (FT)....500 400 500
TRANSPORT WIND..SW 17 SW 16 SW 16
LVORI...........2 2 3
ADI.............8 7 7
SDSPL KT-FT/10008 6 7
WEDNESDAY
SKY/WEATHER.........MOSTLY SUNNY (20-30 PERCENT).
TEMPERATURE.........AROUND 77.
RH HUMIDITY.........AROUND 40 PERCENT.
WIND (20 FT)........WEST WINDS 5 TO 6 MPH.
MIXING HEIGHT.......5800 FT AGL.
TRANSPORT WINDS.....WEST 14 TO 22 MPH INCREASING TO 22 TO 25 MPH IN
THE AFTERNOON.
SMOKE DISPERSAL.....POOR (5400 KNOT-FT) EARLY IN THE MORNING
INCREASING TO GOOD (93700 KNOT-FT) IN THE
AFTERNOON INCREASING TO EXCELLENT (106100
KNOT-FT) LATE IN THE AFTERNOON.
LVORI...............2.
ADI.................7 EARLY IN THE MORNING INCREASING TO 159 IN THE
AFTERNOON.
TIME (EDT) 6 AM 8 AM 10 AM NOON 2 PM 4 PM
SKY (%).........31 37 36 23 14 15
WEATHER COV.....
WEATHER TYPE....NONE NONE NONE NONE NONE NONE
TSTM COV........
TEMP............59 58 64 70 74 76
RH..............61 68 60 53 46 43
20 FT WIND......SW 4 SW 3 W 4 W 4 SW 5 SW 5
20 FT WIND GUST.11 10 10 11 11 11
MIX HGT (FT)....500 500 1700 3900 5100 5600
TRANSPORT WIND..W 15 W 14 W 21 W 25 W 25 W 23
LVORI...........3 3 1 1 1 1
ADI.............7 13 45 125 149 159
SDSPL KT-FT/10006 6 30 85 113 112
WEDNESDAY NIGHT
SKY/WEATHER.........MOSTLY CLEAR (10-20 PERCENT).
TEMPERATURE.........AROUND 56.
RH HUMIDITY.........78 PERCENT.
WIND (20 FT)........LIGHT WINDS.
MIXING HEIGHT.......300 FT AGL.
TRANSPORT WINDS.....WEST 17 TO 21 MPH SHIFTING TO THE SOUTHWEST 9
TO 10 MPH EARLY IN THE EVENING.
SMOKE DISPERSAL.....GOOD (92600 KNOT-FT) EARLY IN THE EVENING
DECREASING TO POOR (2500 KNOT-FT) LATE IN THE
NIGHT.
LVORI...............2.
ADI.................133 EARLY IN THE EVENING DECREASING TO 4 LATE
IN THE NIGHT.
TIME (EDT) 6 PM 8 PM 10 PM MIDNGT 2 AM 4 AM
SKY (%).........17 19 14 11 10 9
WEATHER COV.....
WEATHER TYPE....NONE NONE NONE NONE NONE NONE
TSTM COV........
TEMP............76 72 68 63 61 59
RH..............42 51 59 67 72 73
20 FT WIND......SW 3 SW 2 SW 2 SW 2 S 2 S 2
20 FT WIND GUST.8 6 4 4 4 5
MIX HGT (FT)....5100 500 400 300 300 300
TRANSPORT WIND..W 21 W 10 SW 9 SW 9 SW 10 SW 9
LVORI...........1 2 3 3 3 3
ADI.............133 5 4 4 5 4
SDSPL KT-FT/100093 4 3 3 3 3
FORECASTER...BJS
REQUESTED BY...JEREMY KOLAKS
TYPE OF REQUEST...PRESCRIBED
.TAG 2611192.0/LMK
.DELDT 04/21/26
.FORMATTERVERSION 2.0.0
.EMAIL LOGAN.SCHERSCHEL@USDA.GOV,CHRISTOPHER.THORNTON@USDA.GOV,SHAWN.M.WOODBURY@USDA.GOV,JEREMY.KOLAKS@USDA.GOV
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