680
FNUS73 KBIS 231501
FWSBIS
SPOT FORECAST FOR D6-B4-G15...USFWS
NATIONAL WEATHER SERVICE BISMARCK ND
1001 AM CDT WED APR 23 2025
FORECAST IS BASED ON IGNITION TIME OF 1000 CDT ON APRIL 23.
IF CONDITIONS BECOME UNREPRESENTATIVE, CONTACT THE NATIONAL WEATHER
SERVICE.
DISCUSSION
LOW STRATUS CLOUDS HAVE BEEN STUBBORN TO DIMINISH AND LIFT OVER
THE BURN SITE AND MAY STICK AROUND FOR A FEW MORE HOURS. WINDS
HAVE ALSO HAD A BIT MORE WESTERLY COMPONENT THAN INITIALLY
FORECAST, LIKELY DUE TO CLOSE PROXIMITY OF THE WATER AND TERRAIN
FEATURES. WEST NORTHWEST WINDS WILL REMAIN FAIRLY BREEZY THROUGH
THE REST OF THE MORNING, WITH SUSTAINED VALUES UP TO 23 MPH AND
GUSTS TO 33 MPH. BUT THESE WINDS SHOULD BE GRADUALLY SHIFTING MORE
TO OUT THE NORTHWEST THROUGH THE AFTERNOON, DIMINISHING FROM 18
TO 11 MPH OR SO. IN THE EARLY TO MID AFTERNOON, SOME GUSTS TO 27
MPH WILL REMAIN POSSIBLE. THE CURRENT FORECAST HIGH FOR THE BURN
SITE IS 53 WITH AFTERNOON HUMIDITY EXPECTED TO BOTTOM OUT AROUND
48 PERCENT. THAT BEING SAID, IF CLOUD COVER CONTINUES TO STICK
AROUND EVEN LONGER THAN EXPECTED, WE COULD REMAIN A TOUCH COOLER
WITH SOME HIGHER HUMIDITY VALUES.
HUMIDITY WILL RECOVER TO AROUND 92 PERCENT TONIGHT WITH A LOW OF
AROUND 34. WINDS WILL EVENTUALLY BECOMING LIGHT AND VARIABLE
OVERNIGHT.
REST OF TODAY
SKY/WEATHER.........CLOUDY THEN BECOMING MOSTLY SUNNY.
CWR.................0 PERCENT.
CHANCE OF PCPN......0 PERCENT.
CHANCE OF THUNDER...0 PERCENT.
MAX TEMPERATURE.....AROUND 53.
MIN HUMIDITY........48 PERCENT.
WIND (20 FT)........WEST NORTHWEST WINDS UP TO 23 MPH EARLY WITH
GUSTS TO 33 MPH, SHIFTING TO OUT OF THE NORTHWEST,
RANGING FROM 11 TO 18 MPH THROUGH THE AFTERNOON WITH
GUSTS UP TO 27 MPH.
MIXING HEIGHT.......5100 FT AGL.
TRANSPORT WINDS.....NORTHWEST 16 TO 24 MPH DECREASING TO 12 TO 14
MPH LATE IN THE AFTERNOON.
SMOKE DISPERSAL.....FAIR (50900 KNOT-FT) EARLY IN THE MORNING
INCREASING TO GOOD (62200 KNOT-FT) IN THE
AFTERNOON.
TIME (CDT) 10A 11A 12P 1PM 2PM 3PM 4PM 5PM
SKY (%).........100 90 86 61 35 36 38 41
WEATHER COV.....
WEATHER TYPE....
TSTM COV........
CWR.............0 0 0 0 0 0 0 0
CHC OF PCPN (%).0 0 0 0 0 0 0 0
CHC OF THDR (%).0 0 0 0 0 0 0 0
TEMP............40 41 43 46 49 50 52 52
RH..............72 69 65 61 56 54 50 48
20 FT WIND DIR..WNW WNW NW NW NW NW NW NW
20 FT WIND SPD..23 20 18 15 13 12 12 11
20 FT WIND GUST.33 29 27 22 20 19 17 15
MIX HGT (KFT)...3.0 3.0 3.4 3.9 4.4 4.8 5.1 5.1
TRANSP WIND DIR.NW NW NW NW NW NW NW NW
TRANSP WIND SPD.24 23 21 18 16 14 14 12
DISPR KT-FT/1K..62 59 61 62 61 58 61 51
TONIGHT
SKY/WEATHER.........PARTLY CLOUDY THEN BECOMING MOSTLY CLOUDY THEN
BECOMING PARTLY CLOUDY.
CWR.................0 PERCENT.
CHANCE OF PCPN......0 PERCENT.
CHANCE OF THUNDER...0 PERCENT.
MIN TEMPERATURE.....AROUND 34.
MAX HUMIDITY........92 PERCENT.
WIND (20 FT)........NORTH WINDS 5 TO 9 MPH SHIFTING TO THE
NORTHEAST AROUND 5 MPH LATE IN THE EVENING,
THEN BECOMING LIGHT OVERNIGHT.
MIXING HEIGHT.......300 FT AGL.
TRANSPORT WINDS.....NORTH 7 TO 10 MPH SHIFTING TO THE SOUTHEAST
AROUND 8 MPH EARLY IN THE MORNING.
SMOKE DISPERSAL.....FAIR (44500 KNOT-FT) EARLY IN THE EVENING
DECREASING TO POOR (1700 KNOT-FT) LATE IN THE
NIGHT.
TIME (CDT) 6 PM 8 PM 10 PM MIDNGT 2 AM 4 AM
SKY (%).........46 63 67 35 34 36
WEATHER COV.....
WEATHER TYPE....NONE NONE NONE NONE NONE NONE
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............52 48 45 42 39 36
RH..............50 58 65 73 82 89
20 FT WIND......N 9 N 7 N 5 NE 5 NE 4 E 3
20 FT WIND GUST.14 11 9 7 6 6
MIX HGT (FT)....4900 3300 1000 400 400 300
TRANSPORT WIND..N 10 N 9 NE 7 NE 8 NE 7 E 6
DISPR KT-FT/1K..45 26 6 3 2 2
THURSDAY
SKY/WEATHER.........MOSTLY SUNNY THEN BECOMING MOSTLY CLOUDY.
CWR.................0 PERCENT.
CHANCE OF PCPN......10 PERCENT.
CHANCE OF THUNDER...0 PERCENT.
MAX TEMPERATURE.....AROUND 55.
MIN HUMIDITY........49 PERCENT.
WIND (20 FT)........LIGHT WINDS BECOMING EAST 5 TO 7 MPH IN THE
LATE MORNING AND EARLY AFTERNOON, THEN SHIFTING
TO THE NORTHEAST 7 TO 8 MPH LATE IN THE
AFTERNOON.
MIXING HEIGHT.......4700 FT AGL.
TRANSPORT WINDS.....EAST 6 TO 8 MPH SHIFTING TO THE NORTH 8 TO 9
MPH IN THE AFTERNOON.
SMOKE DISPERSAL.....POOR (2300 KNOT-FT).
TIME (CDT) 6 AM 9 AM NOON 3 PM
SKY (%).........45 40 72 71
WEATHER COV.....
WEATHER TYPE....NONE NONE NONE NONE
TSTM COV........
CWR.............0 0 0 0
CHC OF PCPN (%).0 10 10 10
CHC OF THDR (%).0 0 0 0
TEMP............35 41 50 53
RH..............89 79 60 51
20 FT WIND......E 3G6 E 4G7 E 6G9 NE 7G11
MIX HGT (FT)....300 1400 3900 4600
TRANSPORT WIND..E 8 SE 7 E 7 N 9
DISPR KT-FT/1K..2 9 22 37
FORECASTER...HARGROVE
REQUESTED BY...JASON WAGNER
TYPE OF REQUEST...PRESCRIBED
.TAG 2511474.0/BIS
.DELDT 04/23/25
.FORMATTERVERSION 2.0.0
.EMAIL JASON_WAGNER@FWS.GOV
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