Alert archive / Montana / Severe Thunderstorm Warnings in 2001
Severe Thunderstorm Warning 7, NWS Missoula, MT
NWS Missoula, MT issued this severe thunderstorm warning at Jun 9, 2001, 1:46 AM MDT for Powell County, Montana. It was in force for 44 min. No storm report in the archive falls inside the area while it was in force.
The area
The outline the Iowa Environmental Mesonet reconstructed for it; the warning itself named whole counties.
The facts
- Issued
- Jun 9, 2001, 1:46 AM MDT (07:46 UTC)
- Expired
- Jun 9, 2001, 2:30 AM MDT
- In force
- 44 min
- Issued by
- NWS Missoula, MT
- Area
- Whole counties; the outline is the Mesonet’s reconstruction
County Powell County, MT
The nearest sounding before it
Spokane, WA (KOTX), launched 00:00Z, 7.8 hours before the alert went out and 209 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
- 24 J/kg
- Mixed-layer CIN
- -18 J/kg
- Mixed-layer LCL
- 2191 m above ground
- 0-6 km bulk shear
- 45 kt
- 0-1 km storm-relative helicity
- -1 m²/s²
- 0-3 km storm-relative helicity
- 127 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted, in the capitals the NWS used until 2016.
000 WUUS55 KMSO 090747 SVRMSO MTC047-063-077-081-090830- BULLETIN - EAS ACTIVATION REQUESTED SEVERE THUNDERSTORM WARNING NATIONAL WEATHER SERVICE MISSOULA MT 146 AM MDT SAT JUN 9 2001 THE NATIONAL WEATHER SERVICE IN MISSOULA HAS ISSUED A * SEVERE THUNDERSTORM WARNING FOR... EXTREME SOUTHEASTERN LAKE COUNTY IN NORTHWEST MONTANA EASTERN MISSOULA COUNTY IN WEST CENTRAL MONTANA EXTREME NORTHWESTERN POWELL COUNTY IN WEST CENTRAL MONTANA NORTHEASTERN RAVALLI COUNTY IN WEST CENTRAL MONTANA * UNTIL 230 AM MDT * AT 146 AM MDT...RADAR INDICATED SEVERE THUNDERSTORMS FROM EVARO TO MISSOULA TO 5 MILES EAST OF STEVENSVILLE...OR FROM 10 MILES NORTH OF MISSOULA TO 20 MILES SOUTH OF MISSOULA...MOVING NORTHEAST AT 40 MPH. * SEVERE THUNDERSTORMS WILL BE... OVER BONNER AT 155 AM MDT 3 MILES WEST OF SEELEY LAKE AT 230 AM MDT DAMAGING WINDS IN EXCESS OF 55 MPH ARE LIKELY WITH THIS SEVERE THUNDERSTORM. LARGE HAIL IS POSSIBLE...ALONG WITH FREQUENT LIGHTNING AND HEAVY RAIN. FOR YOUR PROTECTION...GO INDOORS AND STAY AWAY FROM WINDOWS. IF YOU ARE CAUGHT OUTSIDE...MOVE TO A WELL PROTECTED AREA. LAT...LON 4705 11412 4644 11401 4694 11337 4754 11348
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.
NWS Missoula, MT wrote its last area forecast discussion before this severe thunderstorm warning went out at Jun 8, 9:06 PM MDT, 4 hours 40 minutes earlier.
Area forecast discussion, Jun 8, 9:06 PM MDT, 4 hours 40 minutes before
WESTERN MONTANA AND NORTH CENTRAL IDAHO FORECAST DISCUSSION NATIONAL WEATHER SERVICE MISSOULA MT 906 PM MDT FRI JUN 8 2001 WILL UPDATE ZONES AND WEST MONTANA SFP. THUNDERSTORMS HAVE JUST ABOUT DIED OFF ACROSS WESTERN MONTANA AS THE ATMOSPHERE CONTINUES TO STABILIZE. SOMEWHAT MORE ORGANIZED ACTIVITY SKIRTING EXTREME WESTERN SECTIONS OF CWA...CLOSER TO PROXIMITY OF SHORTWAVE APPROACHING OREGON COAST...SOME OF WHICH SHOULD MAKE IT INTO NORTHWEST MONTANA BEFORE DISSIPATING LATER TONIGHT. DYNAMICS REMAIN FOCUSED OVER CENTRAL IDAHO OVERNIGHT AND INTO NORTHWEST MONTANA LATE. WILL KEEP MENTION OF SHOWERS AND ISOLATED THUNDER NW MONTANA AND NC IDAHO OVERNIGHT...BUT WILL DROP FROM REMAINING ZONES. SULLIVAN
The office that day
Everything else NWS Missoula, MT issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jun 9, 1:46 AM MDT | Severe Thunderstorm Warning | MSO | Missoula, Ravalli | 44 min |
| Jun 9, 1:46 AM MDT | Severe Thunderstorm Warning | MSO | Lake | 44 min |
Nearby
Severe Thunderstorm Warnings in Montana, 2001Every severe thunderstorm warning in 2001
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.