Hail, Sheridan
- When
- July 22, 5:00 PM MST
- Where
- Sheridan County, 9 mi NW of Westby
- Measured
- 1 in hail
- Reported by
- TRAINED SPOTTER
- Coordinates
- 48.967, -104.183
Hail in Montana, July 22, 2001
1 hail, as filed by the National Weather Service.
Where it happened
Every event with a place to put it. Tap one for its entry below.
- Tornadoes
- Tropical storms and surge
- Floods
- Wind
- Hail
- Winter weather
- Heat and drought
- Cold
- Fire, smoke and dust
- Marine and coastal
- Other
The toll
- Deaths
- 0
- Injuries
- 0
- Property damage
- None recorded
- Crop damage
- None recorded
- Events
- 1
Deaths and injuries are direct and indirect together, as the offices filed them. Damage is property and crops in the dollars of the year, not adjusted for inflation, and only where an office estimated it.
What forecasters said that day
The local office's own words before the first event, as it sent them, from the Iowa Environmental Mesonet's archive of National Weather Service text.
NWS Glasgow, MT wrote its last area forecast discussion before the first event at Jul 22, 1:20 PM MST, 3 hours 40 minutes earlier.
Area forecast discussion, Jul 22, 1:20 PM MST, 3 hours 40 minutes before
NORTHEAST MONTANA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE GLASGOW MT
220 PM MDT SUN JUL 22 2001
POSITIVELY TILTED UPPER TROF LOCATED FROM SASK TO NRN CALIFORNIA
THIS AFTERNOON. THIS TROF EXPECTED TO SPLIT OVER THE NEXT 24 HOURS
WITH THE NRN BRANCH OF THE TROF MOVING ACROSS SASK AND NRN MT.
IN THE SHORT TERM...SHORTWAVE ALONG TROF AXIS MOVING INTO SW SASK
PRODUCING THUNDERSTORMS AT THIS TIME. CURRENT STEERING WIND AND
EXPECTED STORM MOTION SHOULD KEEP THESE STORMS NORTH OF THE CANADIAN
BORDER. HOWEVER...THEY NEED TO BE WATCHED AS A RIGHT TURNER COULD
DROP SOUTH INTO NE MT. THIS WAVE WILL MOVE TO MANITOBA THIS EVENING.
FURTHER SOUTH...WHILE WEAK COLD FRONT HAS MOVED INTO WRN NORTH
DAKOTA...AIR MASS REMAINS UNSTABLE OVER ERN ZONES AND TO A LESSER
DEGREE OVER THE SRN ZONES AS DRIER AIR BEHIND FRONT IS STILL MOVING
INTO THOSE AREAS. WITH CAPE 1000-2000 J/KG IN THIS AREA...HIGHEST
NEAR GDV...ENOUGH INSTABILITY FOR SEVERE CONVECTION. NARROW LINE OF
THUNDERSTORMS FIRING FROM PLENTYWOOD TO FORT PECK AT THIS TIME WITH
ADDITIONAL STORMS FIRING NEAR BIL. WILL MENTION SCATTERED EVENING
THUNDERSTORMS IN ALL ZONES EXCEPT NW WILL DRIER AIR SHOULD LIMIT
COVERAGE TO ISOLATED. WILL ADD POSSIBILITY OF SEVERE IN SE BASED ON
LATEST SPC DAY 1 OUTLOOK.
MAIN PART OF THE UPPER TROF MOVES ACROSS SASK ON MONDAY WITH THE SRN
EDGE OF TROF CROSSING MT DURING THE AFTN AND EVENING. GIVEN THAT
THIS TROF HAS PRODUCED SCT SHOWERS AND THUNDERSTORMS OVER ALBERTA
THIS AFTERNOON. SCT PRECIP IS POSSIBLE AS THIS TROF MOVES ACROSS NE
MT MONDAY AFTN. MARGINALLY UNSTABLE ATMOSPHERE WITH LI NEAR ZERO MAY
ALLOW FOR AN ISOLD THUNDERSTORM BUT A FORECASTED MID LEVEL CAP WILL
BE A LIMITING FACTOR. WILL MENTION A CHANCE OF AFTERNOON SHOWERS ON
MONDAY. TEMPS...ESP IN THE NORTH...WILL BE COOLER AS TEMPS STAYING
IN THE 60S NORTH OF THE CANADIAN BORDER TODAY. MAV HIGHS OF 70 MAY
BE A BIT TOO COOL FOR GGW AND SDY BUT LOOKS REALISTIC FOR ZONES
ALONG CANADIAN BORDER. WILL GO CLOSE TO WARMER FWC IN THE SOUTH.
AFTER TROF MOVES TO THE EAST MONDAY NIGHT... FLOW ALOFT GOES ZONAL.
MODELS BRING A SHORTWAVE ACROSS ERN MT DURING THE DAY ON TUESDAY.
WHILE THE SYSTEM HAS LIMITED MOISTURE AND DYNAMICS...CANNOT RULE OUT
PRECIP WITH THIS SYSTEM. WILL MENTION A SLIGHT CHC OF SHOWERS
TUESDAY AFTERNOON. MAV AND FWC TEMPS SIMILAR ON TUE AND LOOKS
GOOD. FORRESTER
EXTENDED...MODELS IN DECENT AGREEMENT IN DEVELOPING ZONAL FLOW OVER
NORTHEAST MONTANA BY WEDNESDAY. SHORTWAVES EMBEDDED IN THE FLOW WILL
GENERATE A CHANCE FOR SHOWERS AND THUNDERSTORMS EACH DAY. DEEP
UPPER LEVEL TROUGH MOVES THROUGH ON SUNDAY. WILL KEEP TEMPERATURES
CLOSE TO MOS AS PERFORMANCE HAS BEEN GOOD FOR LAST FEW DAYS. POHL
KGGW 055/077 052/079 056/084 057/085 057/085 057/085 056/083
BBBBBBB 792312/8733333
KGDV 058/080 052/078 054/083 058/085 057/085 056/085 057/082
BmBBBBBB 793312/8733333The radar
The national radar mosaic for the moment the first event began.
Event by event
1 hail. Local standard time, as filed.
What these are
- Hail
- Hail three-quarters of an inch or larger, or smaller hail that caused damage, filed with the largest stone measured.
After NWS Directive 10-1605, the rules offices file Storm Data by.
The same day elsewhere
- Hail and Damaging Winds in Illinois, July 22, 2001
- Flash Flooding in Kentucky, July 22, 2001
- Damaging Winds in Nebraska, July 22, 2001
- Damaging Winds in Iowa, July 22, 2001
- Damaging Winds and Lightning Strike in Wisconsin, July 22, 2001
- Damaging Winds in Michigan, July 22, 2001
- Hail and Damaging Winds in South Dakota, July 22, 2001
- Damaging Wind in Virginia, July 22, 2001
- Flash Flood in Indiana, July 22, 2001
- Hail and Damaging Winds in Montana, July 22, 2001
- Hail and Damaging Winds in Michigan, July 22, 2001
- Lightning Strike in Louisiana, July 22, 2001
More
Every storm in Montana in 2001Every state in 2001This day in weather historyWarnings in Montana, July 2001
Sources
NOAA National Centers for Environmental Information, Storm Events Database, compiled from the National Weather Service’s monthly Storm Data. Complete through 2026-06; NCEI adds each month about 75 days after it ends and revises past years a few times a year. Rebuilt 2026-09-24. Each event’s entry at NCEI: 5261431.