860
FNUS75 KTFX 291815
FWSTFX
SPOT FORECAST FOR MANY GLACIER FLOODING...GLACIER NATIONAL PARK
NATIONAL WEATHER SERVICE GREAT FALLS MT
1215 PM MDT MON JUN 29 2026
FORECAST IS BASED ON FORECAST START TIME OF 1200 MDT ON JUNE 29.
IF CONDITIONS BECOME UNREPRESENTATIVE...CONTACT THE NATIONAL WEATHER
SERVICE.
DISCUSSION
A FLOOD WATCH REMAIN IN EFFECT FOR EASTERN GLACIER NP THROUGH THE
EVENING.
THE MORE PERSISTENT TYPE OF RAIN DIMINISHES EARLY THIS
AFTERNOON, GIVING WAY TO A MORE SHOWERY TYPE OF PRECIPITATION LATE
AFTERNOON AND EVENING. SOME THUNDER CANNOT BE RULED OUT LATE
AFTERNOON AND EARLY EVENING. ADDITIONAL SHOWERS AND PERHAPS A
THUNDERSTORM WILL BE AROUND TUESDAY, THOUGH THE VAST MAJORITY OF
ADDITIONAL PRECIPITATION WILL FALL THROUGH THE REMAINDER OF THE
DAY TODAY. OVERALL, APPROXIMATELY ANOTHER HALF OF AN INCH OF RAIN
IS FORECAST THROUGH THIS EVENING.
REST OF TODAY
SKY/WEATHER.........CLOUDY (85-95 PERCENT). RAIN AND SLIGHT CHANCE OF
THUNDERSTORMS LATE AFTERNOON.
CHANCE OF PCPN......100 PERCENT.
CHANCE OF LIGHTNING.20 PERCENT.
MAX TEMPERATURE.....58-63.
MIN HUMIDITY........63-68 PERCENT.
SURFACE WINDS (MPH).NORTHEAST WINDS AROUND 10 MPH WITH GUSTS TO AROUND
25 MPH.
PCPN AMOUNT.........0.35 INCHES.
TIME (MDT) 12P 1PM 2PM 3PM 4PM 5PM
SKY (%).........96 93 90 86 92 86
WEATHER COV.....DEF DEF DEF DEF DEF DEF
WEATHER TYPE....RN RN RN RN RN RN
TSTM COV........CHC CHC CHC CHC CHC CHC
CHC OF PCPN (%).90 90 90 80 90 80
CHC OF LTNG (%).40 40 40 30 30 30
TEMP............53 55 56 57 58 60
RH..............89 89 87 85 77 77
SURFACE WND DIR.N N N N N NW
SURFACE WND SPD.10 10 10 10 10 10
SURFACE WND GST.25 25 20 20 20 20
VISIBILITY (SM).2.0 2.5 1.5 4 2.0 4
TONIGHT
SKY/WEATHER.........MOSTLY CLOUDY (75-85 PERCENT). SHOWERS WITH A
SLIGHT CHANCE FOR A THUNDERSTORM IN THE EVENING.
CHANCE OF PCPN......90 PERCENT.
CHANCE OF LIGHTNING.20 PERCENT.
MIN TEMPERATURE.....49-54.
MAX HUMIDITY........72-77 PERCENT.
SURFACE WINDS (MPH).NORTHWEST WINDS AROUND 10 MPH SHIFTING TO THE
WEST EARLY IN THE EVENING.
PCPN AMOUNT.........0.15 INCHES.
TIME (MDT) 6PM 7PM 8PM 9PM 10P 11P MID 1AM 2AM 3AM 4AM 5AM
SKY (%).........90 92 82 83 92 76 78 77 83 63 67 68
WEATHER COV.....DEF DEF CHC LKY LKY LKY CHC CHC SCH SCH
WEATHER TYPE....RN RN RN RN RN RN RN RN RN RN
TSTM COV........CHC CHC CHC
CHC OF PCPN (%).90 90 50 60 60 60 30 40 20 20 10 10
CHC OF LTNG (%).30 30 30 10 10 10 10 10 10 0 0 0
TEMP............59 60 60 59 58 58 57 57 56 55 55 53
RH..............77 75 75 73 71 71 69 69 68 70 70 68
SURFACE WND DIR.NW NW W W W W W W W W W W
SURFACE WND SPD.10 10 5 5 5 5 5 5 5 5 10 10
SURFACE WND GST.20 15 15 15 15 15 15 15 15 15 15 15
VISIBILITY (SM).5 5 6 6 7 7 7 7 7 7 7 7
TUESDAY
SKY/WEATHER.........PARTLY SUNNY (60-70 PERCENT). CHANCE OF RAIN
SHOWERS THROUGH THE DAY.
CHANCE OF PCPN......50 PERCENT.
CHANCE OF LIGHTNING.14 PERCENT.
MAX TEMPERATURE.....64-69.
MIN HUMIDITY........57-62 PERCENT.
SURFACE WINDS (MPH).SOUTHWEST WINDS 10 TO 15 MPH.
PCPN AMOUNT.........0.01 INCHES.
SNOWFALL AMOUNT.....0.0 INCHES.
VISIBILITY..........7 INCREASING TO 10.
TIME (MDT) 6AM 7AM 8AM 9AM 10A 11A 12P 1PM 2PM 3PM 4PM 5PM
SKY (%).........70 70 70 60 60 60 73 73 73 71 71 71
WEATHER COV..... SCH CHC SCH CHC CHC CHC CHC CHC CHC
WEATHER TYPE.... RW RW RW RW RW RW RW RW RW
TSTM COV........
CHC OF PCPN (%).10 20 30 10 10 20 40 50 40 50 40 30
CHC OF LTNG (%).0 0 0 0 0 0 10 10 10 10 10 10
TEMP............56 54 54 56 58 59 60 62 62 62 64 65
RH..............65 69 76 77 75 71 72 70 69 67 62 62
SURFACE WND DIR.W W W SW SW SW SW SW SW SW SW SW
SURFACE WND SPD.10 10 10 10 10 10 15 15 15 15 15 15
SURFACE WND GST.20 20 20 20 20 20 25 25 25 25 25 25
VISIBILITY (SM).7 7 7 7 8 9 9 8 10 10 10 10
FORECASTER...MCDOWELL
REQUESTED BY...CHIEF RANGER KATY ANDERSON
TYPE OF REQUEST...OTHER
.TAG 2616452.0/TFX
.DELDT 06/29/26
.FORMATTERVERSION 2.0.0
.EMAIL GLAC_DISPATCH@NPS.GOV, TFX.OPS@NOAA.GOV
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