Damaging Winds in Wyoming, July 28, 2001

Name: Damaging Winds in Wyoming, July 28, 2001
Start: 2001-07-28T14:10
End: 2001-07-28T14:26
Location: Wyoming

July 28, 2001 · NWS BYZ · 3 events in 1 county or zone

3 thunderstorm wind, 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

Open the live radar over this ground

The toll

Deaths: 0
Injuries: 0
Property damage: None recorded
Crop damage: None recorded
Events: 3

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 Billings, MT wrote its last area forecast discussion before the first event at Jul 28, 1:05 PM MST, 1 hour 5 minutes earlier.

Area forecast discussion, Jul 28, 1:05 PM MST, 1 hour 5 minutes before

SOUTH CENTRAL AND SOUTHEAST MONTANA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE BILLINGS MT
205 PM MDT SAT JUL 28 2001

.SUN AND MON...
ACTIVE EVENING SETTING UP. MODELS FAIRLY SIMILAR IN TROUGH PLACEMENT.
THE ETA IS A LITTLE SLOWER AND PREFERRED BASED ON THE TROUGH BECOMING
NEGATIVELY TILTED. STRONG COLD FRONT MOVING INTO WESTERN MONTANA AT THE
MOMENT. SURFACE TROUGH AHEAD OF THE FRONT SEPARATES QUITE A DEWPOINT
DIFFERENCE. FRONT SHOULD GET INTO THE LIVINGSTON AREA AROUND 00Z AND
THEN SLIDE INTO THE SOUTHEAST BY MIDNIGHT. CAPES AROUND 1500-3500 JKG
FROM SOUTH CENTRAL MONTANA INTO THE SOUTHEAST. SHEAR POWERFUL OVER THE
SOUTHEAST. SEVERE MULTICELLULAR STORMS EXPECTED OVER SOUTH CENTRAL
MONTANA WITH SUPERCELLS OVER THE SOUTHEAST. WILL MENTION SEVERE. SUNDAY
SHOULD BE FAIRLY QUIET AS THE FRONT CLEARS THIS OUT. STILL SOUTHWEST
FLOW HOWEVER LEFT OVER AT 500MB. FRONT LAYS DOWN OVER WYOMING WITH A
TONGUE OF INSTABILITY PUSHING BACK ALONG THE MOUNTAINS. WAVES PROGGED TO
CRUISE NORTH OF THE AREA AS NEXT UPSTREAM TROUGH DIGS OVER THE
NORTHWEST. WILL INCLUDE A LOW POP OVER THE MOUNTAINS AS RIGHT REAR QUAD
OF THE JET TO BE IN THIS AREA AIDING ASCENT. THE SOUTHEAST SHOULD BE
FAIRLY STABLE FOR A CHANGE BEHIND THE FRONT. MORE MOISTURE GETS DRAWN IN
FROM MONDAY FOR LOW POPS ALL AROUND. TEMPERATURES WILL BE DRAMATICALLY
COOLER THE NEXT TWO DAYS. WILL NOT BE AGGRESSIVE IN THE COOLING THE
GUIDANCE...AS FRONT SHOULD NOT DRIVE THAT FAR SOUTH AND BEST COOLING
WILL BE NORTH. HUMPHREY

.TUE...WED...THU...FRI...SAT...
NEW AVN RUN IS KEEPING QUITE A BIT OF TROUGHINESS OVER THE AREA ON
TUESDAY WITH PRECIPITABLE H20S STILL RUNNING FROM .75 TO 1.00. THUS
THUNDER STAYS IN THE FORECAST WITH TEMPS JUST A FEW DEGREES WARMER THAN
MONDAY. WEDNESDAY WILL STILL SEE ISOLATED ACTIVITY BUT SURFACE PATTERN
IS INDICATED RETURN MOISTURE MAY BE CUTOFF FROM REACHING THE AREA AS
SURFACE PRESSURE FAVORS THE AREA. SOUTHWEST FLOW REDEVELOPS LATER IN THE
EXTENDED AND THE SURFACE PATTERN BECOMES A BIT MORE FAVORABLE FOR RETURN
MOISTURE. WILL GO WITH A MOSTLY DRY FORECAST FOR WESTERN SECTIONS ON
WEDNESDAY AND THE WHOLE AREA ON THURSDAY...OTHERWISE MOST AFTERNOONS AND
EVENINGS WILL CONTINUE THE SUMMER OF THUNDER. BORSUM

    SUN     MON     TUE     WED     THU     FRI     SAT
-----------------------------------------------------------
BIL 056/082 054/082 056/080 058/085 060/088 060/088 055/088
    40/T    22/T    33/T    32/B    22/B    33/T    33/T
LVM 048/079 046/079 050/078 052/083 055/086 055/086 055/086
    32/T    23/T    33/T    32/B    22/B    33/T    33/T
HDN 054/082 052/082 054/082 056/087 058/090 058/090 058/090
    40/T    22/T    33/T    32/B    22/B    33/T    33/T
MLS 062/082 058/082 060/085 062/090 062/092 062/092 059/092
    40/B    22/T    33/T    33/T    22/B    33/T    33/T
4BQ 062/082 058/082 060/085 062/090 062/092 062/092 062/092
    60/B    02/T    33/T    33/T    22/B    33/T    33/T
BHK 061/081 057/081 058/084 060/089 060/091 060/091 060/091
    60/B    02/T    33/T    33/T    22/B    33/T    33/T
SHR 054/082 050/084 052/083 054/088 057/090 057/092 052/092
    32/T    23/T    33/T    33/B    22/B    33/T    33/T

In the hours before

Local storm report, Jul 28, 9:45 AM MST, 4 hours 25 minutes before

PRELIMINARY LOCAL STORM REPORT...AMENDED
NATIONAL WEATHER SERVICE BILLINGS, MT
1045 AM MDT SAT JUL 28 2001

TIME(MDT)  .....CITY LOCATION.....STATE   ...EVENT/REMARKS...
           ....COUNTY LOCATION....

0900 PM    6 SW MOLT                 MT   60-70 MPH TSTM WIND GUST
07/27/01   STILLWATER                     WIND BLEW OVER 4 LARGE
                                          TREES. REPORTED BY SPOTTERS

0920 PM    3 NE LAUREL               MT   .88 INCH HAIL
07/27/01   YELLOWSTONE                    REPORTED BY SPOTTERS

0935 PM    BILLINGS                  MT   .75 INCH HAIL
07/27/01   YELLOWSTONE                    REPORTED BY NATIONAL WEATHER SERVICE

1044 PM    5 W HARDIN                MT   60 MPH TSTM WIND GUST
07/27/01   BIG HORN                       REPORTED BY LAW ENFORCEMENT

1103 PM    HARDIN                    MT   .75 INCH HAIL
07/27/01   BIG HORN                       REPORTED BY SPOTTERS

1109 PM    8 N HARDIN                MT   100 MPH TSTM WIND GUST. SEVERAL 5 TO
07/27/01   BIG HORN                       6 FOOT DIAMETER TREES BLOWN DOWN.
                                          REPORTED BY LAW ENFORCEMENT

RC

The radar

The Billings radar (KBLX), 166 km away, was scanning. The volume nearest the first event began at 21:08 UTC.

Open the radar archive at this moment

Event by event

3 thunderstorm wind. Local standard time, as filed.

Thunderstorm Wind, Sheridan

When: July 28, 2:10 PM MST
Where: Sheridan County, 7 mi W of Sheridan
Measured: 65 kt (75 mph)
Reported by: TRAINED SPOTTER
Coordinates: 44.800, -107.100

65 mph thunderstorm wind gust estimated by spotter.

Thunderstorm Wind, Sheridan

When: July 28, 2:22 PM MST
Where: Sheridan County, Sheridan Arpt
Measured: 64 kt (74 mph)
Reported by: TRAINED SPOTTER
Coordinates: 44.767, -106.983

64 mph thunderstorm wind gust reported at the airport

Thunderstorm Wind, Sheridan

When: July 28, 2:26 PM MST
Where: Sheridan County, 7 mi W of Sheridan
Measured: 72 kt (83 mph)
Reported by: TRAINED SPOTTER
Coordinates: 44.800, -107.100

72 mph thunderstorm wind gust estimated by spotter.

What these are

Thunderstorm Wind: Winds from a thunderstorm of 50 knots (58 mph) or more, or lower winds that caused damage or casualties. Measured gusts are marked MG, estimated EG.

After NWS Directive 10-1605, the rules offices file Storm Data by.

The same day elsewhere

Every storm in Wyoming in 2001 Every state in 2001 This day in weather history Warnings in Wyoming, 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: 5258203, 5258289, 5258290.