Alert archive / Montana / Severe Thunderstorm Warnings in 2000
Severe Thunderstorm Warning 10, NWS Missoula, MT
NWS Missoula, MT issued this severe thunderstorm warning at Jul 26, 2000, 6:13 PM MDT for Ravalli County, Montana. It was in force for 47 min. 1 report came from 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, with what was reported inside it.
The facts
- Issued
- Jul 26, 2000, 6:13 PM MDT (00:13 UTC)
- Expired
- Jul 26, 2000, 7:00 PM MDT
- In force
- 47 min
- Issued by
- NWS Missoula, MT
- Area
- Whole counties; the outline is the Mesonet’s reconstruction
County Ravalli County, MT
What was reported inside it
| Time | Report | Where | Remark |
|---|---|---|---|
| Jul 26, 6:20 PM MDT | Hail 0.75 | Hamilton, MT |
NCEI Storm Data entries that began inside the alert's area while it was in force. Before 2003 the local storm report archive is thin, so this is the record of what happened rather than what was phoned in.
The nearest sounding before it
Spokane, WA (KOTX), launched 00:00Z, 0.2 hours before the alert went out and 236 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
- 2586 m above ground
- 0-6 km bulk shear
- 34 kt
- 0-1 km storm-relative helicity
- 0 m²/s²
- 0-3 km storm-relative helicity
- 43 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 270013 SVRMSO MTC081-270100- BULLETIN - EAS ACTIVATION REQUESTED SEVERE THUNDERSTORM WARNING NATIONAL WEATHER SERVICE MISSOULA MT 613 PM MDT WED JUL 26 2000 THE NATIONAL WEATHER SERVICE IN MISSOULA HAS ISSUED A * SEVERE THUNDERSTORM WARNING FOR... NORTHERN RAVALLI COUNTY IN WEST CENTRAL MONTANA * UNTIL 700 PM MDT * AT 613 PM MDT...RADAR INDICATED A SEVERE THUNDERSTORM 8 MILES SOUTH OF HAMILTON...MOVING NORTH AT 20 MPH. * THE SEVERE THUNDERSTORM WILL BE... 4 MILES EAST OF HAMILTON AT 625 PM MDT 5 MILES EAST OF WOODSIDE AT 635 PM MDT 9 MILES SOUTHEAST OF STEVENSVILLE AT 700 PM MDT LARGE HAIL IS LIKELY WITH THIS SEVERE THUNDERSTORM. DAMAGING WINDS IN EXCESS OF 55 MPH ARE 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 4611 11429 4604 11405 4648 11387 4655 11409 BELTZ
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 Jul 26, 2:45 PM MDT, 3 hours 28 minutes earlier.
Area forecast discussion, Jul 26, 2:45 PM MDT, 3 hours 28 minutes before
WESTERN MONTANA AND NORTH CENTRAL IDAHO FORECAST DISCUSSION NATIONAL WEATHER SERVICE MISSOULA MT 245 PM MDT WED JUL 26 2000 AT 18Z...SATELLITE SHOWED THE MAIN VORT LOBE LOCATED NEAR THE NORTHERN CALIFORNIA COAST LINE AND A WEAKER VORT MAX OVER SOUTHEASTERN WASHINGTON. THE NEWEST AVN TOO SLOW AND WEAKER WITH THESE FEATURES. THE NGM COMPLETELY MISSES THE VORT CENTER IN WASHINGTON SO HAVE ELECTED TO FOLLOW THE MESO-ETA/ETA SOLUTION. RIDGE REMAINS OVER THE REGION THROUGH THE SHORT TERM FORECAST. THERMAL TROF MOVES EAST SLIGHTLY IN RESPONSE TO TROF OFF THE WEST COAST MOVING INLAND. THEREFORE CONVECTIVE ACTIVITY CONFINED MAINLY TO SOUTHWEST MONTANA ON THURSDAY. RIDGE REBUILDS OVER THE REGION ON FRIDAY WITH THE THERMAL TROF MOVING BACK OVER AREA. AIR MASS SLIGHTLY UNSTABLE HAMILTON TO GRANGEVILLE SOUTHWARD...BUT THIS AREA HAS LITTLE IN THE WAY OF DYNAMICS...SO WILL ONLY MENTION SLIGHT CHANCE TSTMS IN SOUTHWEST MONTANA AND IDAHO ZONES 9 AND 10. NORTHWEST MONTANA BECOMES MORE UNDER THE INFLUENCE OF THE TROF FOR DRY CONDITIONS THROUGH FRIDAY. HARMER EXTENDED...ALL MODELS AGREE IN KEEPING STRONG H5 RIDGE OVER THE INTERMOUNTAIN WEST THROUGH THE EXTENDED PERIOD. THERMAL TROF BECOMES WELL ESTABLISHED OVER THE COLUMBIA BASIN/WESTERN IDAHO BY LATE SUNDAY. WITH RIDGE AXIS OVER WESTERN/CENTRAL MT...IDAHO PANHANDLE REMAINS THE ONLY CONCERN FOR CONVECTION...BUT THREAT IS NOT WORTH MENTIONING. SW FLOW OVER THE PANHANDLE NUDGES INTO NW MONTANA BY MONDAY BUT DONT SEE MUCH IN THE WAY OF MOISTURE..AND WITH WARM AIR ALOFT TO HELP STABILIZE THE AIRMASS...HAVE TO DISCOUNT THREAT OF CONVECTION ANYWHERE IN THE CWA THROUGH THE PERIOD...GOENS
The office that day
Everything else NWS Missoula, MT issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jul 26, 6:59 PM MDT | Severe Thunderstorm Warning | MSO | Granite, Missoula, Ravalli | 61 min |
Nearby
Severe Thunderstorm Warnings in Montana, 2000Every severe thunderstorm warning in 2000
Sources
The product and its follow-ups from the Iowa Environmental Mesonet's archive of National Weather Service and Storm Prediction Center text; verification from NCEI's Storm Data; the sounding from the Mesonet's radiosonde archive.