Alert archive / Montana / Severe Thunderstorm Warnings in 1997
Severe Thunderstorm Warning 85, NWS Glasgow, MT
NWS Glasgow, MT issued this severe thunderstorm warning at Aug 27, 1997, 10:36 PM MDT for Dawson County, Montana. It was in force for 69 min. 1 report came from inside the area while it was in force.
The area
The counties it named, with what was reported inside it.
The facts
- Issued
- Aug 27, 1997, 10:36 PM MDT (04:36 UTC)
- Expired
- Aug 27, 1997, 11:45 PM MDT
- In force
- 69 min
- Issued by
- NWS Glasgow, MT
- Area
- Whole counties
County Dawson County, MT
The radar
The Glasgow radar (KGGW), 166 km from the middle of the area, began a volume at 04:38 UTC, the scan nearest the moment this went out.
Open the radar archive at this moment
The archived warnings, watches and discussions in force at that minute are drawn over the scan, this one among them.
What was reported inside it
| Time | Report | Where | Remark |
|---|---|---|---|
| Aug 27, 10:36 PM MDT | Thunderstorm Wind 64 | Glendive, 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
Glasgow Intl Airport, MT (KGGW), launched 00:00Z, 4.6 hours before the alert went out and 166 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
- 1641 J/kg
- Mixed-layer CIN
- -37 J/kg
- Mixed-layer LCL
- 2711 m above ground
- 0-6 km bulk shear
- 39 kt
- 0-1 km storm-relative helicity
- 18 m²/s²
- 0-3 km storm-relative helicity
- 81 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 3.7
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.
NWS Glasgow, MT wrote its last area forecast discussion before this severe thunderstorm warning went out at Aug 27, 8:13 PM MDT, 2 hours 23 minutes earlier.
Area forecast discussion, Aug 27, 8:13 PM MDT, 2 hours 23 minutes before
NORTHEAST MONTANA AREA FORECAST DISCUSSION NATIONAL WEATHER SERVICE GLASGOW MT 810 PM MDT WED AUG 27 1997 CURRENTLY RW/TRW LOCATED OVR A LARGE PORTION OF NE MT. HAVE HAD SEVERAL SVR TRWS THIS EVENING. CURRENTLY HAVE A SVR TRW OVR MALTA AND ONE MVG INTO SWRN VALLEY CO...HOWEVER THESE ARE ISOLATED AND PROBABLY DON/T WARRANT EXTENDING THE WATCH. STRONGEST CELLS ARE MVG INTO WRN ND...AND SELS IDEA OF LETTING THE WATCH EXPIRE LOOKS GUD TO ME. NE MT WILL PROBABLY SEE RW/TRW EXTENDING THRU THE NIGHT WITH ISOLATED SVR NEAR TRWS THAT FORM ALONG OUTFLOW BNDRYS. CURRENT ZONE PACKAGE LOOKS OK...BUT WILL NEED TO UPDATE TO TAKE OUT SVR TRW WATCH...AND WILL STILL MENTION A FEW ISOLATED SVR THROUGHOUT THJE NIGHT. WL COORDINATE WITH GTF BY TELCON TO DISCUSS HOW WE WILL HANDLE CURRENT WATCH SITUATION. GGW 5532 066/090/060/084 GDV 5542 066/090/060/084 MARTIN
The office that day
Everything else NWS Glasgow, MT issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Aug 27, 6:00 PM MDT | Severe Thunderstorm Warning | GGW | Phillips | 60 min |
| Aug 27, 6:15 PM MDT | Severe Thunderstorm Warning | GGW | Roosevelt, Sheridan | 60 min |
| Aug 27, 6:47 PM MDT | Flash Flood Warning | GGW | Roosevelt | 3 hr |
| Aug 27, 7:15 PM MDT | Severe Thunderstorm Warning | GGW | Richland, Roosevelt | 60 min |
| Aug 27, 7:45 PM MDT | Severe Thunderstorm Warning | GGW | Phillips | 60 min |
| Aug 27, 7:55 PM MDT | Severe Thunderstorm Warning | GGW | Valley | 65 min |
| Aug 27, 9:25 PM MDT | Severe Thunderstorm Warning | GGW | Dawson | 65 min |
| Aug 27, 10:14 PM MDT | Flash Flood Warning | GGW | Roosevelt | 6 hr |
Nearby
Severe Thunderstorm Warnings in Montana, 1997Every severe thunderstorm warning in 1997
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; radar from the NEXRAD Level II archive.