Alert archive / Montana / Severe Thunderstorm Warnings in 1992
Severe Thunderstorm Warning 13, NWS Great Falls, MT
NWS Great Falls, MT issued this severe thunderstorm warning at Aug 3, 1992, 6:50 PM MDT for Blaine County, Hill County, Montana. It was in force for 70 min.
The area
The counties it named.
The facts
- Issued
- Aug 3, 1992, 6:50 PM MDT (00:50 UTC)
- Expired
- Aug 3, 1992, 8:00 PM MDT
- In force
- 70 min
- Issued by
- NWS Great Falls, MT
- Area
- Whole counties
Counties Blaine County, MT, Hill County, MT
The nearest sounding before it
Great Falls, MT (KGTF), launched 00:00Z, 0.8 hours before the alert went out and 176 km from the middle of its area. This is the routine balloon launch nearest before it, the air the forecaster had in hand, not a measurement taken for the alert.
- Mixed-layer CAPE
- 0 J/kg
- Mixed-layer CIN
- No buoyant parcel
- Mixed-layer LCL
- 3302 m above ground
- 0-6 km bulk shear
- 50 kt
- 0-1 km storm-relative helicity
- -7 m²/s²
- 0-3 km storm-relative helicity
- 128 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted, in the capitals the NWS used until 2016.
000 TTAA00 KHVR 040049 SVRHVR MTC041-005-040200- BULLETIN - IMMEDIATE BROADCAST REQUESTED SEVERE THUNDERSTORM WARNING NATIONAL WEATHER SERVICE HAVRE MT 650 PM MDT MON AUG 3 1992 THE NATIONAL WEATHER SERVICE HAS ISSUED A SEVERE THUNDERSTORM WARNING ...EFEECTIVE UNTIL 8 PM MDT FOR PERSONS IN THE FOLLOWING MONTANA COUNTIES... IN NORTH-CENTRAL MONTANA...NORTHEAST HILL...NORTHWEST BLAINE INCLUDING THE TOWNS OF...CHINOOK. A 645 PM...A STORM SPOTTER 28 MILES NORTH OF HAVRE REPORTED GOLF BALL SIZE HAIL BROKE WINDOWS AND DAMAGED CROPS. THE STORM WAS MOVING SOUTHEAST AT 25 MPH. IF THREATENING WEATHER APPROACHES...TAKE SHELTER IMMEDIATELY.
What forecasters said that day
The local office's own words before this severe thunderstorm warning went out, as it sent them, from the Iowa Environmental Mesonet's archive of National Weather Service text.
In the hours before
Local storm report, Aug 3, 2:41 PM MDT, 4 hours 9 minutes before
STORM REPORT
NATIONAL WEATHER SERVICE GREAT FALLS, MT
225 PM MDT MON AUG 03 1992
TIME EVENT
845 PM MDT 1 INCH TO 1 1/2 INCH HAIL REPORTED BY WEATHER SERVICE
AUG 2 EMPLOYEE LIVING AT 219-14TH AVE SOUTH, GREAT FALLS.
SOME HAILSTONES OVAL OR CONICAL...CHANGED TO PEA
SIZED.
END/SEBSpecial weather statement, Aug 3, 5:00 PM MDT, 1 hour 50 minutes before
MTZ003-040030- SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE GREAT FALLS MT 500 PM MDT MON AUG 3 1992 STRONG THUNDERSTORMS ARE MOVING ACROSS THE CANADIAN BORDER INTO GLACIER COUNTY. THE THUNDERSTORMS ARE MOVING TO THE SOUTHEAST AT 25 MPH. AN OBSERVER IN MOUNTAIN VIEW, ALBERTA, WHICH IS JUST NORTH OF THE CANADIAN BORDER, REPORTED MARBLE-SIZED HAIL AT 4:20 PM MDT. PERSONS IN GLACIER COUNTY AND WESTERN TOOLE COUNTY SHOULD BE PREPARED FOR HAIL, STRONG GUSTY WINDS, AND BRIEF HEAVY RAIN UNTIL 630 PM MDT. BLANK
Special weather statement, Aug 3, 6:10 PM MDT, 40 minutes before
MTZ003-040130- SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE GREAT FALLS MT 610 PM MDT MON AUG 3 1992 ...STRONG THUNDERSTORM MOVING INTO PONDERA COUNTY... RADAR AT 6PM SHOWED A STRONG THUNDERSTORM 8 MILES NORTHEAST OF VALIER. THIS STORM IS MOVING TO THE SOUTHEAST AT 25 MILES AN HOUR AND HAS BECOME STRONGER OVER THE LAST HALF HOUR. PERSONS IN CENTRAL AND EASTERN PONDERA COUNTY SHOULD BE PREPARED FOR HAIL, STRONG GUSTY WINDS, AND BRIEF HEAVY RAIN UNTIL 730 PM MDT. THIS INCLUDES THE TOWNS OF VALIER AND CONRAD. A SEVERE THUNDERSTORM WATCH CONTINUES IN EFFECT UNTIL MIDNIGHT MDT FOR MUCH OF CENTRAL MONTANA. BLANK
Special weather statement, Aug 3, 6:10 PM MDT, 40 minutes before
MTZ005-040115- SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE HAVRE MT 605 PM MDT MON AUG 3 1992 ...SEVERE THUNDERSTORM WATCH FOR NORTH-CENTRAL MONTANA UNTIL MIDNIGHT... THUNDERSTORMS WERE SLOWLY FORMING AS OF 6 PM...BUT REMAIN WIDELY SCATTERED. ONE THUNDERSTORM HAD JUST FORMED 15 MILES NORTH OF HAVRE. MOVING TO THE SOUTHEAST AT 25 MPH...IT WILL MOVE INTO THE CHINOOK AREA BY 7 PM. A LARGER...STRONGER THUNDERSTORM WAS IN THE CUT BANK-SHELBY AREA... EXTENDING NORTH TO LETHBRIDGE...AND EARLIER HAD PRODUCED SMALL HAIL. LIGHTNING STRIKE CHARTS SHOWED A COUPLE OTHER THUNDERSTORMS HAD DEVELOPED IN EASTERN BLAINE COUNTY. NO SEVERE WEATHER HAS BEEN REPORTED...NOR ANY IN MONTANA SO FAR$ TODAY. HOWEVER...A SEVERE THUNDERSTORM WATCH MEANS LARGE HAIL AND DAMAGING WINDS...AS WELL AS FREQUENT LIGHTNING STRIKES AND HEAVY SHOWERS ARE POSSIBLE. SIMONSEN
The office that day
Everything else NWS Great Falls, MT issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Aug 3, 7:28 PM MDT | Severe Thunderstorm Warning | TFX | Petroleum | 47 min |
Nearby
Severe Thunderstorm Warnings in Montana, 1992Every severe thunderstorm warning in 1992
Sources
The product and its follow-ups from the Iowa Environmental Mesonet's archive of National Weather Service and Storm Prediction Center text; the sounding from the Mesonet's radiosonde archive.