878
FNUS74 KTSA 211335
FWSTSA
SPOT FORECAST FOR VC UNIT...AR STATE PARKS
NATIONAL WEATHER SERVICE TULSA OK
835 AM CDT TUE APR 21 2026
FORECAST IS BASED ON IGNITION TIME OF 1000 CDT ON APRIL 21.
IF CONDITIONS BECOME UNREPRESENTATIVE...CONTACT THE NATIONAL WEATHER
SERVICE.
PLEASE CONTACT NWS TULSA AT (918)838-7838, IF YOU HAVE QUESTIONS
OR CONCERNS WITH THIS FORECAST.
DISCUSSION
GUSTY SOUTHWEST WINDS, WITH 20-FOOT WIND GUSTS AROUND 20 MPH, ARE
EXPECTED THROUGH THE AFTERNOON. MINIMUM AFTERNOON HUMIDITIES WILL
DROP TO NEAR 45 PERCENT WITH TEMPERATURES NEAR SEASONAL AVERAGES.
SHOWERS TODAY WILL MOST LIKELY REMAIN SOUTH OF THE BURN SITE.
RELATIVE HUMIDITIES WILL BE HIGHER TOMORROW DUE TO INCREASING
MOISTURE, WITH MINIMUM HUMIDITIES ON WEDNESDAY FROM 60 TO 65
PERCENT.
TODAY
SKY/WEATHER.........MOSTLY SUNNY (30-40 PERCENT).
MAX TEMPERATURE.....AROUND 73.
MIN HUMIDITY........45 PERCENT.
DEWPOINT............48 INCREASING TO 50 LATE IN THE AFTERNOON.
WIND (20 FT)........SOUTHWEST WINDS 8 TO 12 MPH WITH GUSTS TO
AROUND 19 MPH.
MIXING HEIGHT.......4600 FT AGL.
TRANSPORT WINDS.....SOUTHWEST 22 TO 24 MPH.
SMOKE DISPERSAL.....EXCELLENT (72786 KNOT-FT).
STABILITY CLASS.....2.
1700FT AVG MIX T(F).66.
TIME (CDT) 10A 11A 12P 1PM 2PM 3PM 4PM 5PM
SKY (%).........29 32 36 28 28 29 39 40
WEATHER COV.....
WEATHER TYPE....
TSTM COV........
TEMP............62 67 70 71 71 73 71 71
DEWPOINT........46 47 48 49 50 51 50 51
RH..............55 49 45 46 47 46 47 49
20 FT WIND DIR..S SW SW SW SW SW SW SW
20 FT WIND SPD..9 11 12 12 13 13 13 13
20 FT WIND GUST.18 18 18 18 18 18 19 19
MIX HGT (KFT)...2.2 2.9 3.4 3.9 4.4 4.6 4.4 4.4
TRANSP WIND DIR.SW SW SW SW SW SW SW SW
TRANSP WIND SPD.22 23 24 24 24 24 23 24
VRATE KT-FT/1K..73 73 73 100 100 100 100 100
VENTRATE CAT....GD GD GD GD GD GD GD GD
1700FT MIX T(F).64 65 66 67 68 68 67 65
TONIGHT
SKY/WEATHER.........PARTLY CLOUDY (35-45 PERCENT) THEN BECOMING
MOSTLY CLOUDY (60-70 PERCENT).
MIN TEMPERATURE.....AROUND 53.
MAX HUMIDITY........93 PERCENT.
DEWPOINT............50.
WIND (20 FT)........SOUTH WINDS 5 TO 9 MPH. GUSTS UP TO 23 MPH IN
THE EVENING.
MIXING HEIGHT.......400 FT AGL.
TRANSPORT WINDS.....SOUTH 13 TO 22 MPH SHIFTING TO THE SOUTHWEST 12
TO 13 MPH OVERNIGHT.
SMOKE DISPERSAL.....EXCELLENT (99672 KNOT-FT) EARLY IN THE EVENING
DECREASING TO POOR (11147 KNOT-FT) LATE IN THE
NIGHT.
STABILITY CLASS.....4.
1700FT AVG MIX T(F).60.
TIME (CDT) 6PM 7PM 8PM 9PM 10P 11P MID 1AM 2AM 3AM 4AM 5AM
SKY (%).........32 30 36 35 32 34 33 48 61 62 69 65
WEATHER COV.....
WEATHER TYPE....
TSTM COV........
TEMP............70 67 64 61 59 58 57 56 56 56 55 55
DEWPOINT........51 51 50 50 50 50 51 50 50 50 50 51
RH..............51 56 60 67 72 75 80 80 80 80 83 86
20 FT WIND DIR..S S S S S S S S S S S S
20 FT WIND SPD..12 11 8 7 6 6 6 5 5 5 5 5
20 FT WIND GUST.18 18 17 16 16 14 14 12 10 8 7 8
MIX HGT (KFT)...3.4 2.6 0.6 0.6 0.5 0.4 0.4 0.4 0.5 0.7 1.0 0.5
TRANSP WIND DIR.S S S S S S S SW SW S S S
TRANSP WIND SPD.22 22 16 15 14 13 12 12 12 12 13 12
VRATE KT-FT/1K..100 51 51 51 51 51 51 11 11 11 11 11
VENTRATE CAT....GD FR FR FR FR FR FR PR PR PR PR PR
1700FT MIX T(F).64 62 62 62 62 60 57 56 57 59 61 61
WEDNESDAY
SKY/WEATHER.........PARTLY SUNNY (60-70 PERCENT).
MAX TEMPERATURE.....AROUND 72.
MIN HUMIDITY........64 PERCENT.
DEWPOINT............53 INCREASING TO 58 IN THE LATE MORNING AND
AFTERNOON.
WIND (20 FT)........SOUTH WINDS 5 TO 8 MPH.
MIXING HEIGHT.......3700 FT AGL.
TRANSPORT WINDS.....SOUTHWEST 10 TO 16 MPH.
SMOKE DISPERSAL.....POOR (11147 KNOT-FT) EARLY IN THE MORNING
INCREASING TO GOOD (53114 KNOT-FT) IN THE
AFTERNOON.
STABILITY CLASS.....4.
1700FT AVG MIX T(F).61.
TIME (CDT) 6AM 7AM 8AM 9AM 10A 11A 12P 1PM 2PM 3PM 4PM 5PM
SKY (%).........58 65 72 73 73 74 74 75 72 68 65 53
WEATHER COV.....
WEATHER TYPE....
TSTM COV........
TEMP............55 54 56 59 62 64 66 68 70 71 72 72
DEWPOINT........51 52 53 55 57 58 59 59 59 59 59 59
RH..............86 93 90 87 84 81 78 73 68 66 64 64
20 FT WIND DIR..S S S S S S S S S S S S
20 FT WIND SPD..4 5 5 5 5 6 6 7 7 6 7 7
20 FT WIND GUST.8 8 11 10 11 11 11 12 11 11 11 11
MIX HGT (KFT)...0.5 0.5 1.3 1.5 1.5 1.9 2.4 2.8 3.4 3.7 3.7 2.9
TRANSP WIND DIR.SW SW SW SW S S S S S S S S
TRANSP WIND SPD.12 10 14 15 15 15 15 15 15 16 16 16
VRATE KT-FT/1K..11 31 31 31 31 31 31 53 53 53 53 53
VENTRATE CAT....PR PR PR PR PR PR PR FR FR FR FR FR
1700FT MIX T(F).60 59 59 60 61 61 62 62 63 63 64 64
FORECASTER...K.HATFIELD
REQUESTED BY...FRED SUTTON
TYPE OF REQUEST...PRESCRIBED
.TAG 2610915.1/TSA
.DELDT 04/21/26
.FORMATTERVERSION 2.0.0
.EMAIL FRED.SUTTON@ARKANSAS.GOV
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