772
FNUS73 KBIS 231123
FWSBIS
SPOT FORECAST FOR RIVERDALE WMA...NORTH DAKOTA GAME & FISH DEPARTMENT
NATIONAL WEATHER SERVICE BISMARCK ND
623 AM CDT WED APR 23 2025
FORECAST IS BASED ON IGNITION TIME OF 1200 CDT ON APRIL 23.
IF CONDITIONS BECOME UNREPRESENTATIVE, CONTACT THE NATIONAL WEATHER
SERVICE.
DISCUSSION
LOOK FOR MOSTLY CLOUDY SKIES THIS MORNING BECOMING PARTLY CLOUDY THIS
AFTERNOON ACROSS THE FIRE AREA TODAY, WITH HIGHS IN THE MID
LOW TO MID 50S AND AFTERNOON HUMIDITY VALUES NEAR 40 PERCENT. A STEADY NORTHWEST WIND
CAN ALSO BE EXPECTED TODAY, AND COULD PERHAPS BRING LOCALIZED HIGHER WINDS THROUGH THE
EARLY AFTERNOON DUE TO SOME FUNNELING OFF LOCAL TERRAIN NEAR THE FIRE AREA. PARTLY CLOUDY
SKIES CONTINUE FOR TONIGHT. HUMIDITY WILL RECOVER TO NEAR 90 PERCENT TONIGHT, WHILE
NORTHWEST WINDS BECOME EASTERLY AND LIGHT. THURSDAY THEN SEES A SLIGHT CHANCE OF RAIN
SHOWERS IN THE AFTERNOON. A LIGHT EAST NORTHEAST MAY ALSO BE FOUND ON THURSDAY,
WHILE AFTERNOON HUMIDITY VALUES DECREASE SLIGHTLY TO NEAR 35 PERCENT.
WINDS BECOME LIGHT OUT OF THE NORTHEAST ON THURSDAY NIGHT, WITH CHANCES FOR
PRECIPITATION DIMINISHING.
REST OF TODAY
SKY/WEATHER.........CLOUDY THEN BECOMING PARTLY CLOUDY.
CWR.................0 PERCENT.
CHANCE OF PCPN......0 PERCENT.
CHANCE OF THUNDER...0 PERCENT.
MAX TEMPERATURE.....AROUND 52.
MIN HUMIDITY........42 PERCENT.
WIND (20 FT)........NORTHWEST WINDS 10 TO 18 MPH IN THE MORNING WITH A FEW HIGHER
GUSTS, DIMINISHING TO 8 TO 15 MPH IN THE AFTERNOON WITH A FEW
HIGHER GUSTS.
MIXING HEIGHT.......5000 FT AGL.
TRANSPORT WINDS.....NORTHWEST 10 TO 20 MPH WITH A FEW HIGHER GUSTS IN THE MORNING
AND EARLY AFTERNOON.
SMOKE DISPERSAL.....POOR (34700 KNOT-FT) EARLY IN THE MORNING
INCREASING TO FAIR (46600 KNOT-FT) IN THE
AFTERNOON.
TIME (CDT) 12P 1PM 2PM 3PM 4PM 5PM
SKY (%).........72 48 23 19 28 40
WEATHER COV.....
WEATHER TYPE....
TSTM COV........
CWR.............0 0 0 0 0 0
CHC OF PCPN (%).0 0 0 0 0 0
CHC OF THDR (%).0 0 0 0 0 0
TEMP............42 45 47 48 50 50
RH..............60 51 49 46 42 42
20 FT WIND DIR..NW NW NW NW N N
20 FT WIND SPD..15 15 14 12 10 8
20 FT WIND GUST.18 18 18 15 14 12
MIX HGT (KFT)...3.6 3.6 4.2 4.6 4.9 5.0
TRANSP WIND DIR.NW NW NW NW NW NW
TRANSP WIND SPD.15 14 13 12 10 8
DISPR KT-FT/1K..46 44 47 46 44 35
TONIGHT
SKY/WEATHER.........PARTLY CLOUDY.
CWR.................0 PERCENT.
CHANCE OF PCPN......0 PERCENT.
CHANCE OF THUNDER...0 PERCENT.
MIN TEMPERATURE.....AROUND 30.
MAX HUMIDITY........92 PERCENT.
WIND (20 FT)........NORTH NORTHEAST WINDS 5 TO 10 MPH SHIFTING TO THE
EAST AROUND 5 MPH AFTER 0100.
MIXING HEIGHT.......400 FT AGL.
TRANSPORT WINDS.....NORTH 6 TO 12 MPH SHIFTING TO THE EAST SOUTHEAST
6 TO 12 MPH AFTER 0100.
SMOKE DISPERSAL.....POOR (2200 KNOT-FT).
TIME (CDT) 6PM 7PM 8PM 9PM 10P 11P MID 1AM 2AM 3AM 4AM 5AM
SKY (%).........53 53 49 49 47 42 48 31 40 38 43 37
WEATHER COV.....
WEATHER TYPE....
TSTM COV........
CWR.............0 0 0 0 0 0 0 0 0 0 0 0
CHC OF PCPN (%).0 0 0 0 0 0 0 0 0 0 0 0
CHC OF THDR (%).0 0 0 0 0 0 0 0 0 0 0 0
TEMP............50 50 47 44 41 40 38 36 35 34 33 33
RH..............42 42 47 55 65 67 73 82 85 85 89 89
20 FT WIND DIR..N N N NE NE NE NE E E E E E
20 FT WIND SPD..6 5 5 5 5 5 5 5 4 4 3 3
20 FT WIND GUST.10 9 7 7 8 7 7 7 6 6 5 5
MIX HGT (KFT)...4.8 4.5 3.0 0.5 0.4 0.4 0.4 0.4 0.4 0.4 0.4 0.4
TRANSP WIND DIR.N N N NE NE NE E E E E E SE
TRANSP WIND SPD.7 6 6 7 8 7 8 8 8 8 7 7
DISPR KT-FT/1K..29 22 15 3 3 2 3 3 3 3 2 2
THURSDAY
SKY/WEATHER.........PARTLY SUNNY. SLIGHT CHANCE OF RAIN SHOWERS IN
THE AFTERNOON.
CWR.................5 PERCENT.
CHANCE OF PCPN......20 PERCENT.
CHANCE OF THUNDER...0 PERCENT.
MAX TEMPERATURE.....AROUND 55.
MIN HUMIDITY........35 PERCENT.
WIND (20 FT)........LIGHT EAST WINDS AROUND 5 MPH IN THE MORNING BECOMING
EAST NORTHEAST AROUND 5 TO 10 MPH IN THE AFTERNOON.
MIXING HEIGHT.......4500 FT AGL.
TRANSPORT WINDS.....EAST SOUTHEAST 6 TO 12 MPH SHIFTING TO THE NORTH NORTHEAST
6 TO 12 MPH IN THE AFTERNOON.
SMOKE DISPERSAL.....POOR (2100 KNOT-FT).
TIME (CDT) 6AM 7AM 8AM 9AM 10A 11A 12P 1PM 2PM 3PM 4PM 5PM
SKY (%).........44 51 67 55 45 59 62 64 64 65 65 65
WEATHER COV..... SCH SCH SCH SCH SCH
WEATHER TYPE.... RW RW RW RW RW
TSTM COV........
CWR.............0 0 0 0 0 0 0 0 0 0 0 0
CHC OF PCPN (%).0 10 10 10 10 10 10 20 20 20 20 20
CHC OF THDR (%).0 0 0 0 0 0 0 0 0 0 0 0
TEMP............32 32 34 38 43 47 50 52 53 54 54 55
RH..............92 90 85 77 67 57 49 43 39 37 36 35
20 FT WIND DIR..E E E E E E E E E NE NE NE
20 FT WIND SPD..3 3 3 3 4 4 5 5 5 6 6 6
20 FT WIND GUST.5 5 5 5 6 7 8 9 10 10 10 10
MIX HGT (KFT)...0.4 0.3 0.6 0.7 1.4 2.5 3.4 4.4 4.4 4.5 4.5 4.2
TRANSP WIND DIR.E E E SE SE NE NE N N N N N
TRANSP WIND SPD.8 7 7 7 7 6 6 6 6 7 7 7
DISPR KT-FT/1K..3 2 3 4 9 12 16 22 24 26 27 26
FORECASTER...ANGLIN
REQUESTED BY...ROBERT MILLER
TYPE OF REQUEST...PRESCRIBED
.TAG 2511467.0/BIS
.DELDT 04/23/25
.FORMATTERVERSION 2.0.0
.EMAIL ROMILLER@ND.GOV
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