Alert archive / Montana / Severe Thunderstorm Warnings in 1993
Severe Thunderstorm Warning 20, NWS Missoula, MT
NWS Missoula, MT issued this severe thunderstorm warning at Jun 26, 1993, 9:19 PM MDT for Mineral County, Sanders County, Montana. It was in force for 41 min.
The area
The counties it named.
The facts
- Issued
- Jun 26, 1993, 9:19 PM MDT (03:19 UTC)
- Expired
- Jun 26, 1993, 10:00 PM MDT
- In force
- 41 min
- Issued by
- NWS Missoula, MT
- Area
- Whole counties
Counties Mineral County, MT, Sanders County, MT
The nearest sounding before it
Spokane, WA (KOTX), launched 00:00Z, 3.3 hours before the alert went out and 105 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
The text of this product is not in the archive. The NWS text archive before 2002 is incomplete.
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, 1 hour 12 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, 1 hour 12 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
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, 10:11 PM MDT | Severe Thunderstorm Warning | MSO | Lake, Missoula, Sanders | 49 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.