Alert archive / Montana / Severe Thunderstorm Warnings in 1993
Severe Thunderstorm Warning 21, NWS Missoula, MT
NWS Missoula, MT issued this severe thunderstorm warning at Jun 26, 1993, 10:11 PM MDT for Lake County, Missoula County, Sanders County, Montana. It was in force for 49 min.
The area
The counties it named.
The facts
- Issued
- Jun 26, 1993, 10:11 PM MDT (04:11 UTC)
- Expired
- Jun 26, 1993, 11:00 PM MDT
- In force
- 49 min
- Issued by
- NWS Missoula, MT
- Area
- Whole counties
Counties Lake County, MT, Missoula County, MT, Sanders County, MT
The nearest sounding before it
Spokane, WA (KOTX), launched 00:00Z, 4.2 hours before the alert went out and 154 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
- 454 J/kg
- Mixed-layer CIN
- -6 J/kg
- Mixed-layer LCL
- 2715 m above ground
- 0-6 km bulk shear
- 39 kt
- 0-1 km storm-relative helicity
- 20 m²/s²
- 0-3 km storm-relative helicity
- 67 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.7
The text
As transmitted, in the capitals the NWS used until 2016.
000 TTAA00 KMSO 270411 RRA SVRMSO MTC047-063-089-270500- BULLETIN - IMMEDIATE BROADCAST REQUESTED SEVERE THUNDERSTORM WARNING NATIONAL WEATHER SERVICE MISSOULA MT 1011 PM MDT SAT JUN 26 1993 THE NATIONAL WEATHER SERVICE IN MISSOULA HAS ISSUED A SEVERE THUNDERSTORM WARNING EFFECTIVE UNTIL 1100 PM MDT FOR PEOPLE IN THE FOLLOWING LOCATION... IN WEST CENTRAL MONTANA ...LAKE COUNTY...WESTERN MISSOULA COUNTY ...SOUTHERN SANDERS COUNTY THE PUBLIC REPORTED WINDS IN EXCESS OF 60 MPH AT SUPERIOR EARLIER. THIS STORM WAS MOVING INTO SOUTHERN SANDERS COUNTY. ALSO...REPORTS OF FREQUENT LIGHTNING...HEAVY RAIN WITH WINDS APPROACHING 60 MPH WERE NOTEDIN WESTERN MISSOULA COUNTY. THIS STORM WILL MOVE INTO LAKE COUNTY WITHIN THE HOUR. SEVERE THUNDERSTORMS PRODUCE DAMAGING WIND IN EXCESS OF 55 MPH...DESTRUCTIVE HAIL...DEADLY LIGHTNING...AND VERY HEAVY RAIN. FOR YOUR PROTECTION MOVE TO AN INTERIOR ROOM ON THE LOWEST FLOOR OF YOUR HOME OR BUSINESS. HEAVY RAINS FLOOD ROADS QUICKLY SO DON'T DRIVE INTO AREAS WHERE WATER COVERS THE ROAD.
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
Special weather statement, Jun 26, 8:07 PM MDT, 2 hours 4 minutes before
SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE MISSOULA MT 8 PM MDT SAT JUNE 26 1993 ...STRONG THUNDERSTORMS MOVING TOWARD MINERAL COUNTY... THIS EVENING...SCATTERED THUNDERSTORMS WERE DEVELOPING OVER WEST CENTRAL MONTANA. THE STRONGEST THUNDERSTORMS DEVELOPED OVER NORTHEAST OREGON AND WERE MOVING INTO THE PANHANDLE OF IDAHO THROUGH THE LEWISTON...GRANGEVILLE AREA. THESE STRONG THUNDERSTORMS WILL MOVE INTO MINERAL COUNTY OF WEST CENTRAL MONTANA BETWEEN 9 TO 10 PM MDT THEN SPREAD NORTHEAST INTO THE SOUTHERN TWO THIRDS OF SANDERS COUNTY. MINERAL AND SANDERS COUNTIES OF WEST CENTRAL MONTANA SHOULD BE ALERT FOR THESE THUNDERSTORMS AND BE PREPARED TO TAKE ACTION IF THREATENING WEATHER APPROACHES. REPORTS OF SEVERE WEATHER SHOULD BE MADE TO YOUR NEAREST LAW ENFORCEMENT AGENCY OR THE NATIONAL WEATHER SERVICE. ADDITIONAL STATEMENT WILL BE ISSUED AS NECCESSARY. END
Special weather statement, Jun 26, 8:07 PM MDT, 2 hours 4 minutes before
SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE MISSOULA MT 8 PM MDT SAT JUNE 26 1993 ...STRONG THUNDERSTORMS MOVING TOWARD MINERAL COUNTY... THIS EVENING...SCATTERED THUNDERSTORMS WERE DEVELOPING OVER WEST CENTRAL MONTANA. THE STRONGEST THUNDERSTORMS DEVELOPED OVER NORTHEAST OREGON AND WERE MOVING INTO THE PANHANDLE OF IDAHO THROUGH THE LEWISTON...GRANGEVILLE AREA. THESE STRONG THUNDERSTORMS WILL MOVE INTO MINERAL COUNTY OF WEST CENTRAL MONTANA BETWEEN 9 TO 10 PM MDT THEN SPREAD NORTHEAST INTO THE SOUTHERN TWO THIRDS OF SANDERS COUNTY. MINERAL AND SANDERS COUNTIES OF WEST CENTRAL MONTANA SHOULD BE ALERT FOR THESE THUNDERSTORMS AND BE PREPARED TO TAKE ACTION IF THREATENING WEATHER APPROACHES. REPORTS OF SEVERE WEATHER SHOULD BE MADE TO YOUR NEAREST LAW ENFORCEMENT AGENCY OR THE NATIONAL WEATHER SERVICE. ADDITIONAL STATEMENT WILL BE ISSUED AS NECCESSARY. END
Special weather statement, Jun 26, 9:20 PM MDT, 51 minutes before
MTZ001-270500- SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE KALISPELL MT 920 PM MDT SAT JUN 26 1993 ...STRONG THUNDERSTORMS ARE MOVING INTO NORTHWEST MONTANA... AT 9 PM NATIONAL WEATHER SERVICE RADAR IN MISSOULA INDICATED A STRONG THUNDERSTORM...WITH TOPS NEAR 53 THOUSAND FEET...MOVING NORTHEAST THROUGH LINCOLN COUNTY AT 25 MILES AN HOUR. THE LINCOLN COUNTY SHERIFF REPORTED THAT HAIL UP TO ONE-HALF INCH IN DIAMETER FELL IN THE TOWN OF LIBBY ABOUT 845 PM. STRONG THUNDERSTORMS WILL CONTINUE TO MOVE THROUGH NORTHWEST MONTANA TONIGHT. MANY OF THESE STORMS MAY CONTAIN BRIEF HEAVY RAIN...HAIL... STRONG GUSTY WINDS...AND FREQUENT LIGHTNING. SKIES SHOULD BE MONITORED CLOSELY...IF THREATENING WEATHER APPROACHES...SEEK SHELTER. LISTEN TO NOAA WEATHER RADIO...COMMERCIAL RADIO OR TELEVISION FOR THE LATEST INFORMATION ON THESE STORMS. BRITTON
Special weather statement, Jun 26, 9:28 PM MDT, 43 minutes before
MTZ001-270500- SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE KALISPELL MT 920 PM MDT SAT JUN 26 1993 ...STRONG THUNDERSTORMS ARE MOVING INTO NORTHWEST MONTANA... AT 9 PM NATIONAL WEATHER SERVICE RADAR IN MISSOULA INDICATED A STRONG THUNDERSTORM...WITH TOPS NEAR 53 THOUSAND FEET...MOVING NORTHEAST THROUGH LINCOLN COUNTY AT 25 MILES AN HOUR. THE LINCOLN COUNTY SHERIFF REPORTED THAT HAIL UP TO ONE-HALF INCH IN DIAMETER FELL IN THE TOWN OF LIBBY ABOUT 845 PM. STRONG THUNDERSTORMS WILL CONTINUE TO MOVE THROUGH NORTHWEST MONTANA TONIGHT. MANY OF THESE STORMS MAY CONTAIN BRIEF HEAVY RAIN...HAIL... STRONG GUSTY WINDS...AND FREQUENT LIGHTNING. SKIES SHOULD BE MONITORED CLOSELY...IF THREATENING WEATHER APPROACHES...SEEK SHELTER. LISTEN TO NOAA WEATHER RADIO...COMMERCIAL RADIO OR TELEVISION FOR THE LATEST INFORMATION ON THESE STORMS. BRITTON
The office that day
Everything else NWS Missoula, MT issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jun 26, 6:59 PM MDT | Severe Thunderstorm Warning | MSO | Lewis and Clark, Powell | 46 min |
| Jun 26, 9:12 PM MDT | Severe Thunderstorm Warning | MSO | Mineral | 48 min |
| Jun 26, 9:19 PM MDT | Severe Thunderstorm Warning | MSO | Mineral, Sanders | 41 min |
| Jun 26, 10:32 PM MDT | Severe Thunderstorm Warning | MSO | Flathead | 43 min |
Nearby
Severe Thunderstorm Warnings in Montana, 1993Every severe thunderstorm warning in 1993
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.