149
FNUS73 KLMK 251430
FWSLMK
SPOT FORECAST FOR SIPAC F...PURDUE UNIVERSITY FORESTRY & NATURAL RESOURCES
NATIONAL WEATHER SERVICE LOUISVILLE KY
1030 AM EDT WED MAR 25 2026
FORECAST IS BASED ON IGNITION TIME OF 1300 EDT ON MARCH 25.
IF CONDITIONS BECOME UNREPRESENTATIVE...CONTACT THE NATIONAL WEATHER
SERVICE.
DISCUSSION
HIGH PRESSURE WILL MOVE EAST OF THE REGION TODAY, WHICH WILL
ALLOW WINDS TO SHIFT FROM THE SOUTHEAST (THIS MORNING) TO THE
SOUTHWEST (BY MID-MORNING). THROUGH THE DAY, THE PRESSURE GRADIENT
WILL TIGHTEN, WHICH WILL ALLOW WINDS TO BE A BIT HIGHER THAN
YESTERDAY. LOOKING TO SEE STRONGER TRANSPORT WINDS TODAY AROUND
17-21KTS, MAKING SMOKE DISPERSAL EXCELLENT THIS AFTERNOON. WITH
GOOD MIXING TODAY, WE MAY SEE SOME SLIGHT DRY AIR MIX DOWN WHICH
WOULD DIP MINIMUM RH INTO THE 26-31% RANGE THIS AFTERNOON. DRY
CONDITIONS ARE EXPECTED ALL DAY, WITH SURFACE TEMPERATURES WARMING
INTO THE MID 70S.
EARLY THURSDAY MORNING, SCATTERED SHOWERS AND A FEW STORMS WILL
MOVE THROUGH THE REGION. NEAR RECORD HIGH TEMPERATURES ARE
EXPECTED FOR THURSDAY AFTERNOON. ANOTHER WAVE OF SHOWERS AND
STORMS IS EXPECTED FRIDAY MORNING.
REST OF TODAY
SKY/WEATHER.........MOSTLY SUNNY (45-55 PERCENT).
TEMPERATURE.........65 AT IGNITION...MAX 72.
RH..................38 PERCENT AT IGNITION...MIN 27 PERCENT.
WIND (20 FT)........WINDS SOUTHWEST AT 5 MPH AT
IGNITION...OTHERWISE SOUTHWEST WINDS 6 TO 7
MPH.
MIXING HEIGHT.......2700 FT AGL AT IGNITION...OTHERWISE 4700 FT
AGL.
TRANSPORT WINDS.....SOUTHWEST 16 TO 23 MPH.
SMOKE DISPERSAL.....MARGINAL /37500 KNOT-FT/ AT IGNITION.
MAX...GOOD /94000 KNOT-FT/.
LVORI...............1.
ADI.................36 EARLY IN THE MORNING INCREASING TO 93 IN THE
AFTERNOON.
TIME (EDT) 1 PM 3 PM 5 PM
SKY (%).........57 49 39
WEATHER COV.....
WEATHER TYPE....NONE NONE NONE
TSTM COV........
TEMP............65 69 72
RH..............38 28 28
20 FT WIND......SW 5 SW 6 SW 6
20 FT WIND GUST.11 12 12
MIX HGT (FT)....2700 4500 4700
TRANSPORT WIND..SW 16 SW 21 SW 23
LVORI...........1 1 1
ADI.............36 82 93
SDSPL KT-FT/100038 81 94
TONIGHT
SKY/WEATHER.........PARTLY CLOUDY (30-40 PERCENT) THEN BECOMING
MOSTLY CLOUDY (50-60 PERCENT). SCATTERED
SHOWERS AND THUNDERSTORMS OVERNIGHT.
TEMPERATURE.........MIN 58.
RH..................MAX 81 PERCENT.
WIND (20 FT)........SOUTHWEST WINDS 6 TO 7 MPH EARLY IN THE EVENING
BECOMING LIGHT, THEN BECOMING SOUTH 5 TO 7 MPH
WITH GUSTS TO AROUND 15 MPH LATE IN THE
EVENING. GUSTY AND ERRATIC WINDS EXPECTED NEAR
THUNDERSTORMS OVERNIGHT.
MIXING HEIGHT.......400 FT AGL.
TRANSPORT WINDS.....SOUTHWEST 13 TO 22 MPH DECREASING TO 12 TO 20
MPH IN THE LATE EVENING AND OVERNIGHT.
SMOKE DISPERSAL.....GOOD (73300 KNOT-FT) EARLY IN THE EVENING
DECREASING TO POOR (4500 KNOT-FT) LATE IN THE
NIGHT.
LVORI...............2.
ADI.................101 EARLY IN THE EVENING DECREASING TO 5 LATE
IN THE NIGHT.
TIME (EDT) 6 PM 8 PM 10 PM MIDNGT 2 AM 4 AM
SKY (%).........45 49 42 41 24 48
WEATHER COV..... SCTTRD SCTTRD
WEATHER TYPE....NONE NONE NONE NONE RNSHWR RNSHWR
TSTM COV........ SCTTRD SCTTRD
TEMP............70 69 64 62 62 61
RH..............34 45 58 65 67 72
20 FT WIND......SW 6 S 3 S 3 S 5 S 5 S 6
20 FT WIND GUST.11 9 10 11 14 14
MIX HGT (FT)....3900 500 500 600 700 700
TRANSPORT WIND..SW 22 S 13 SW 13 SW 14 SW 16 SW 17
LVORI...........1 2 2 3 3 3
ADI.............101 8 8 9 7 15
SDSPL KT-FT/100073 5 5 7 9 11
THURSDAY
SKY/WEATHER.........MOSTLY SUNNY (25-35 PERCENT). SCATTERED SHOWERS
AND THUNDERSTORMS EARLY IN THE MORNING.
TEMPERATURE.........MAX 84.
RH..................MIN 47 PERCENT.
WIND (20 FT)........SOUTHWEST WINDS 7 TO 12 MPH WITH GUSTS TO
AROUND 21 MPH. GUSTY AND ERRATIC WINDS EXPECTED
NEAR THUNDERSTORMS EARLY IN THE MORNING.
MIXING HEIGHT.......4000 FT AGL.
TRANSPORT WINDS.....SOUTHWEST 20 TO 29 MPH INCREASING TO 29 TO 31
MPH LATE IN THE AFTERNOON.
SMOKE DISPERSAL.....POOR (14800 KNOT-FT) EARLY IN THE MORNING
INCREASING TO EXCELLENT (107700 KNOT-FT) IN THE
AFTERNOON.
LVORI...............2.
ADI.................0 EARLY IN THE MORNING INCREASING TO 96 IN THE
AFTERNOON.
TIME (EDT) 6 AM 8 AM 10 AM NOON 2 PM 4 PM
SKY (%).........52 32 15 13 9 13
WEATHER COV.....SCTTRD
WEATHER TYPE....RNSHWR NONE NONE NONE NONE NONE
TSTM COV........SCTTRD
TEMP............59 60 66 74 80 82
RH..............80 81 73 62 52 47
20 FT WIND......S 6 S 6 SW 8 SW 9 SW 10 SW 10
20 FT WIND GUST.15 17 20 18 18 20
MIX HGT (FT)....900 800 1600 2700 3600 4000
TRANSPORT WIND..SW 20 SW 21 SW 26 SW 29 SW 30 SW 31
LVORI...........3 3 3 1 1 2
ADI.............18 18 54 87 79 0
SDSPL KT-FT/100015 15 36 68 94 107
FORECASTER...SRW
REQUESTED BY...RON RATHFON
TYPE OF REQUEST...PRESCRIBED
.TAG 2607832.0/LMK
.DELDT 03/25/26
.FORMATTERVERSION 2.0.0
.EMAIL RONR@PURDUE.EDU
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