436
FNUS74 KSHV 091220
FWSSHV
SPOT FORECAST FOR DYSON FIRE...U.S. FOREST SERVICE
NATIONAL WEATHER SERVICE SHREVEPORT LA
720 AM CDT THU APR 9 2026
FORECAST IS BASED ON FORECAST START TIME OF 0900 CDT ON APRIL 09.
IF CONDITIONS BECOME UNREPRESENTATIVE...CONTACT THE NATIONAL WEATHER
SERVICE.
PLEASE CONTACT OUR OFFICE AT (318) 631-3669 EXT. 241, IF YOU HAVE QUESTIONS
OR CONCERNS WITH THIS FORECAST.
DISCUSSION
HIGH PRESSURE TO THE EAST WILL MAINTAIN SOUTHEAST WINDS UP TO 6
MPH THIS AFTERNOON. MOISTURE TO GRADUALLY INCREASE OVER THE NEXT
COUPLE OF DAYS WITH MINIMUM AFTERNOON RELATIVE HUMIDITY VALUES
AROUND 40 TO 45 PERCENT. OTHERWISE, EXPECT VERY HIGH MIXING
HEIGHTS DUE TO INCREASED INSTABILITY AREAWIDE.
REST OF TODAY
SKY/WEATHER.........SUNNY (10-20 PERCENT).
TEMPERATURE.........67 AT FORECAST START...MAX 82.
RH..................69 PERCENT AT FORECAST START...MIN 43 PERCENT.
WIND (20 FT)........WINDS EAST AT 5 MPH AT FORECAST
START...OTHERWISE LIGHT WINDS BECOMING
SOUTHEAST 5 TO 6 MPH IN THE LATE MORNING AND
AFTERNOON.
MIXING HEIGHT.......1600 FT AGL AT FORECAST START...OTHERWISE 6800
FT AGL.
TRANSPORT WINDS.....SOUTHEAST 10 TO 16 MPH.
TRANSPORT WINDS M/S.SOUTHEAST 4 TO 7 METERS/SECOND.
LVORI...............3.
DISPERSION INDEX....41 INCREASING TO 62 LATE IN THE MORNING, THEN
INCREASING TO 73 EARLY IN THE AFTERNOON
INCREASING TO 86 LATE IN THE AFTERNOON
DECREASING TO 61.
TIME (CDT) 9AM 10A 11A 12P 1PM 2PM 3PM 4PM 5PM
SKY (%).........7 3 16 17 20 24 18 21 19
WEATHER COV.....
WEATHER TYPE....
TSTM COV........
TEMP............67 71 74 77 79 80 81 82 81
RH..............69 65 62 56 50 49 46 43 44
20 FT WIND DIR..E SE SE SE E E E E E
20 FT WIND MPH..3 6 6 6 5 5 5 5 5
20 FT WIND GUST.14 14 14 14 13 13 13 13 13
MIX HGT (KFT)...1.6 2.8 3.4 4.5 5.2 5.6 6.5 6.8 6.6
TRANSP WIND DIR.SE SE SE SE SE SE SE E E
TRANSP WIND SPD.16 16 14 13 12 12 10 10 12
TRANS WIND DIR..SE SE SE SE SE SE SE E E
TRANS SPD (M/S).7 7 6 6 5 5 4 4 5
DISPERSION IDX..41 57 66 71 75 83 89 85 61
LVORI...........4 2 2 1 1 1 1 1 1
TONIGHT
SKY/WEATHER.........MOSTLY CLEAR (15-25 PERCENT).
TEMPERATURE.........MIN 58.
RH..................MAX 100 PERCENT.
WIND (20 FT)........EAST WINDS AROUND 5 MPH EARLY IN THE EVENING
BECOMING LIGHT.
MIXING HEIGHT.......400 FT AGL.
TRANSPORT WINDS.....SOUTHEAST 9 TO 15 MPH SHIFTING TO THE SOUTH 7
TO 13 MPH OVERNIGHT.
TRANSPORT WINDS M/S.EAST AROUND 5 METERS/SECOND SHIFTING TO THE
SOUTH 3 TO 6 METERS/SECOND OVERNIGHT.
LVORI...............5.
DISPERSION INDEX....30 DECREASING TO 3.
TIME (CDT) 6PM 7PM 8PM 9PM 10P 11P MID 1AM 2AM 3AM 4AM 5AM
SKY (%).........21 22 18 24 27 24 23 21 20 8 9 16
WEATHER COV.....
WEATHER TYPE....
TSTM COV........
TEMP............80 77 74 71 67 67 66 65 62 61 59 59
RH..............45 50 57 64 75 75 78 78 87 90 96 96
20 FT WIND DIR..E SE SE SE SE SE SE SE SE SE SE SE
20 FT WIND MPH..5 3 3 3 3 3 3 2 2 2 2 2
20 FT WIND GUST.13 13 13 13 13 13 14 14 13 10 10 10
MIX HGT (KFT)...3.8 0.6 0.5 0.5 0.5 0.5 0.6 0.6 0.5 0.4 0.4 0.4
TRANSP WIND DIR.E E E SE SE SE S S S S S SE
TRANSP WIND SPD.12 10 9 12 12 15 14 13 12 9 8 7
TRANS WIND DIR..E E E SE SE SE S S S S S SE
TRANS SPD (M/S).5 4 4 5 5 7 6 6 5 4 4 3
DISPERSION IDX..30 5 0 1 5 5 6 6 5 4 4 3
LVORI...........2 2 2 3 3 3 3 4 5 6 7 8
FRIDAY
SKY/WEATHER.........MOSTLY SUNNY (35-45 PERCENT). SLIGHT CHANCE OF
RAIN SHOWERS IN THE AFTERNOON.
TEMPERATURE.........MAX 84.
RH..................MIN 44 PERCENT.
WIND (20 FT)........LIGHT WINDS BECOMING SOUTHEAST AROUND 5 MPH IN
THE LATE MORNING AND AFTERNOON.
MIXING HEIGHT.......5600 FT AGL.
TRANSPORT WINDS.....SOUTHEAST 6 TO 10 MPH.
TRANSPORT WINDS M/S.SOUTHEAST 3 TO 4 METERS/SECOND.
LVORI...............5.
DISPERSION INDEX....9 INCREASING TO 24 LATE IN THE MORNING, THEN
INCREASING TO 32 LATE IN THE MORNING DECREASING
TO 21 LATE IN THE AFTERNOON.
TIME (CDT) 6AM 7AM 8AM 9AM 10A 11A 12P 1PM 2PM 3PM 4PM 5PM
SKY (%).........37 39 20 30 39 42 46 49 52 56 59 55
WEATHER COV..... SCH SCH SCH SCH SCH
WEATHER TYPE.... RW RW RW RW RW
TSTM COV........
TEMP............59 58 60 64 71 75 79 82 83 84 84 83
RH..............96 100 100 90 71 62 52 47 46 44 44 46
20 FT WIND DIR..SE E E E SE SE SE SE SE SE SE SE
20 FT WIND MPH..2 2 2 2 5 5 5 5 5 5 5 5
20 FT WIND GUST.10 10 10 12 13 13 13 12 12 12 12 12
MIX HGT (KFT)...0.4 0.4 0.8 1.2 2.0 3.0 4.0 4.7 5.3 5.6 5.3 4.1
TRANSP WIND DIR.SE SE SE SE SE SE SE SE SE SE SE SE
TRANSP WIND SPD.7 7 9 10 10 9 7 6 6 6 7 7
TRANS WIND DIR..SE SE SE SE SE SE SE SE SE SE SE SE
TRANS SPD (M/S).3 3 4 4 4 4 3 3 3 3 3 3
DISPERSION IDX..4 7 13 20 27 31 33 34 34 33 29 21
LVORI...........8 7 6 4 3 2 1 1 1 1 1 1
FORECASTER...MAYEAUX
REQUESTED BY...ROBERT DITNTAMAN
TYPE OF REQUEST...WILDFIRE
.TAG 2609650.0/SHV
.DELDT 04/08/26
.FORMATTERVERSION 2.0.0
.EMAIL ROBERT.DINTAMAN@USDA.GOV
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