523
FNUS73 KBIS 121517
FWSBIS
SPOT FORECAST FOR GRENORA FIRE...TRENTON FIRE DEPARTMENT
NATIONAL WEATHER SERVICE BISMARCK ND
1017 AM CDT SUN APR 12 2026
FORECAST IS BASED ON IGNITION TIME OF 1100 CDT ON APRIL 12.
IF CONDITIONS BECOME UNREPRESENTATIVE, CONTACT THE NATIONAL WEATHER
SERVICE.
DISCUSSION
LOW PRESSURE NEAR THE BURN SITE THIS MORNING HAS MOVED EAST AND WEST
TO NORTHWEST WINDS 12 TO 18 MPH WILL BE SHIFTING TO THE NORTH AND ARE
EXPECTED TO BE NORTH 12 TO 18 MPH AT IGNITION TIME. WINDS ARE EXPECTED
TO REMAIN NORTHERLY THROUGH THE AFTERNOON, THEN SHIFT TO THE NORTHEAST
8 TO 16 MPH DURING THE EVENING. THE FORECAST HIGH IS 64 DEGREES WITH
A MINIMUM HUMIDITY AROUND 40 PERCENT. AT MAX HEATING THIS AFTERNOON THE
MIXING HEIGHT IS EXPECTED TO BE AROUND 5400 FEET WITH GOOD SMOKE
DISPERSAL.
REST OF TODAY
SKY/WEATHER.........PARTLY TO MOSTLY CLOUDY.
CWR.................3 PERCENT.
CHANCE OF PCPN......10 PERCENT.
CHANCE OF THUNDER...0 PERCENT.
MAX TEMPERATURE.....AROUND 64.
MIN HUMIDITY........41 PERCENT.
WIND (20 FT)........NORTH WINDS 12 TO 18 MPH.
MIXING HEIGHT.......5400 FT AGL.
TRANSPORT WINDS.....NORTH 16 TO 18 MPH.
SMOKE DISPERSAL.....POOR (32700 KNOT-FT) EARLY IN THE MORNING
INCREASING TO GOOD (82300 KNOT-FT) IN THE
AFTERNOON.
TIME (CDT) 11A 12P 1PM 2PM 3PM 4PM 5PM
SKY (%).........56 48 41 41 41 41 45
WEATHER COV.....
WEATHER TYPE....
TSTM COV........
CWR.............0 0 0 0 0 0 0
CHC OF PCPN (%).10 10 10 0 0 10 10
CHC OF THDR (%).0 0 0 0 0 0 0
TEMP............54 55 58 61 62 62 63
RH..............77 72 62 51 48 46 43
20 FT WIND DIR..NW N N N N N N
20 FT WIND SPD..15 15 15 17 15 14 14
20 FT WIND GUST. 17 21 20 20 20
MIX HGT (KFT)...2.0 3.1 4.0 4.6 5.1 5.4 5.1
TRANSP WIND DIR.N N N N N N N
TRANSP WIND SPD.18 18 18 18 18 16 16
DISPR KT-FT/1K..33 49 65 69 82 75 72
TONIGHT
SKY/WEATHER.........CLOUDY. CHANCE OF RAIN AFTER MIDNIGHT.
CWR.................7 PERCENT.
CHANCE OF PCPN......30 PERCENT.
CHANCE OF THUNDER...4 PERCENT.
MIN TEMPERATURE.....AROUND 35.
MAX HUMIDITY........96 PERCENT.
WIND (20 FT)........NORTH WINDS 12 TO 16 MPH SHIFTING TO THE
NORTHEAST AROUND 12 MPH LATE IN THE EVENING.
MIXING HEIGHT.......1000 FT AGL.
TRANSPORT WINDS.....NORTH 15 TO 18 MPH SHIFTING TO THE EAST 16 TO
20 MPH OVERNIGHT.
SMOKE DISPERSAL.....GOOD (64300 KNOT-FT) EARLY IN THE EVENING
DECREASING TO POOR (15100 KNOT-FT) LATE IN THE
NIGHT.
TIME (CDT) 6 PM 8 PM 10 PM MIDNGT 2 AM 4 AM
SKY (%).........49 54 58 67 75 83
WEATHER COV..... S CHC CHANCE
WEATHER TYPE....NONE NONE NONE NONE RAIN RAIN
TSTM COV........
CWR.............0 0 0 0 10 10
CHC OF PCPN (%).0 0 0 0 20 30
CHC OF THDR (%).0 0 0 0 0 0
TEMP............63 58 49 42 40 38
RH..............41 45 58 73 79 85
20 FT WIND......N 14 N 12 NE 12 NE 12 NE 12 NE 12
20 FT WIND GUST.20 18 18 19 18 18
MIX HGT (FT)....4600 2200 1200 1000 1100 1100
TRANSPORT WIND..N 16 N 15 NE 18 NE 20 E 17 E 16
DISPR KT-FT/1K..64 29 19 17 17 15
MONDAY
SKY/WEATHER.........CLOUDY. RAIN LIKELY IN THE MORNING, THEN
CHANCE OF RAIN AND SLIGHT CHANCE OF
THUNDERSTORMS IN THE AFTERNOON.
CWR.................6 PERCENT INCREASING TO 47 PERCENT IN THE
MORNING, THEN DECREASING TO 35 PERCENT IN THE
AFTERNOON.
CHANCE OF PCPN......80 PERCENT.
CHANCE OF THUNDER...15 PERCENT.
MAX TEMPERATURE.....AROUND 44.
MIN HUMIDITY........85 PERCENT.
WIND (20 FT)........EAST WINDS 11 TO 12 MPH. GUSTY AND ERRATIC
WINDS EXPECTED NEAR THUNDERSTORMS EARLY IN THE
AFTERNOON.
MIXING HEIGHT.......1500 FT AGL.
TRANSPORT WINDS.....EAST 13 TO 15 MPH.
SMOKE DISPERSAL.....POOR (10900 KNOT-FT).
FORECASTER...HAMILTON
REQUESTED BY...FIRE CAPTAIN STEVE ROBLES
TYPE OF REQUEST...PRESCRIBED
.TAG 2610108.0/BIS
.DELDT 04/12/26
.FORMATTERVERSION 2.0.0
.EMAIL S.ROBLES@TVFDND.ORG
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