Alert archive / Montana / Tornado Warnings in 2002
Tornado Warning 3, NWS Glasgow, MT
NWS Glasgow, MT issued this tornado warning at Jul 8, 2002, 7:23 PM MDT for Valley County, Montana. It was in force for 52 min. 3 reports came from inside the area while it was in force.
The area
The outline as issued, with what was reported inside it.
The facts
- Issued
- Jul 8, 2002, 7:23 PM MDT (01:23 UTC)
- Expired
- Jul 8, 2002, 8:15 PM MDT
- In force
- 52 min
- Issued by
- NWS Glasgow, MT
- Area
- Counties, with a storm outline in the text
County Valley County, MT
The radar
The Glasgow radar (KGGW), 31 km from the middle of the area, began a volume at 01:22 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 |
|---|---|---|---|
| Jul 8, 7:28 PM MDT | Thunderstorm Wind 52 M | Hinsdale, MT | |
| Jul 8, 7:40 PM MDT | Thunderstorm Wind 55 E | Hinsdale, MT | Several roofs were blown off houses and several trees downed by thunderstorm winds in Hinsdale. |
| Jul 8, 7:45 PM MDT | Thunderstorm Wind 53 M | Opheim, MT | Wind gust reported at the Bluff Creek RAWS site. |
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 watch it was issued in
The SPC watch in force over the same counties when this warning went out.
| Issued | Product | Office | Lasted |
|---|---|---|---|
| Jul 8, 4:45 PM MDT | Tornado Watch | SPC | 5 hr |
The nearest sounding before it
Glasgow Intl Airport, MT (KGGW), launched 00:00Z, 1.4 hours before the alert went out and 30 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
- 1112 J/kg
- Mixed-layer CIN
- -125 J/kg
- Mixed-layer LCL
- 1849 m above ground
- 0-6 km bulk shear
- 57 kt
- 0-1 km storm-relative helicity
- 182 m²/s²
- 0-3 km storm-relative helicity
- 543 m²/s²
- Significant tornado parameter
- 0.3
- Supercell composite
- 15.2
The text
As transmitted, in the capitals the NWS used until 2016.
572
WFUS55 KGGW 090123
TORGGW
MTC105-090215-
BULLETIN - EAS ACTIVATION REQUESTED
TORNADO WARNING
NATIONAL WEATHER SERVICE GLASGOW MT
722 PM MDT MON JUL 8 2002
THE NATIONAL WEATHER SERVICE IN GLASGOW HAS ISSUED A
* TORNADO WARNING FOR...
VALLEY COUNTY IN NORTHEAST MONTANA
* UNTIL 815 PM MDT
* AT 717 PM MDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
LINE OF TORNADO PRODUCING STORMS FROM 31 MILES WEST OF OPHEIM TO 18
MILES SOUTH OF GLASGOW...OR FROM 30 MILES NORTHEAST OF WHITEWATER
TO 18 MILES SOUTH OF GLASGOW...MOVING EAST AT 20 MPH.
* TORNADO PRODUCING STORMS ARE EXPECTED TO BE NEAR...
GLASGOW...FORT PECK AT 730 PM MDT
SAINT MARIE AT 750 PM MDT
NASHUA AT 800 PM MDT
OPHEIM AT 815 PM MDT
AT 705 PM MDT A TRAINED WEATHER SPOTTER REPORTED A TORNADO ON THE
GROUND 48 MILES SOUTHWEST OF GLASGOW.
LAT...LON 4898 10711 4827 10714 4788 10682 4811 10641
4815 10590 4899 10627
.END
POHLThe office that day
Everything else NWS Glasgow, MT issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jul 8, 6:36 PM MDT | Severe Thunderstorm Warning | GGW | Valley | 54 min |
| Jul 8, 6:48 PM MDT | Severe Thunderstorm Warning | GGW | Garfield | 57 min |
| Jul 8, 6:51 PM MDT | Severe Thunderstorm Warning | GGW | Phillips | 54 min |
| Jul 8, 7:15 PM MDT | Severe Thunderstorm Warning | GGW | Valley | 60 min |
| Jul 8, 7:24 PM MDT | Severe Thunderstorm Warning | GGW | McCone | 51 min |
| Jul 8, 7:42 PM MDT | Severe Thunderstorm Warning | GGW | Roosevelt | 63 min |
| Jul 8, 7:43 PM MDT | Severe Thunderstorm Warning | GGW | Garfield | 62 min |
| Jul 8, 7:52 PM MDT | Severe Thunderstorm Warning | GGW | Prairie | 53 min |
| Jul 8, 7:54 PM MDT | Severe Thunderstorm Warning | GGW | Daniels | 66 min |
| Jul 8, 8:10 PM MDT | Severe Thunderstorm Warning | GGW | Valley | 65 min |
| Jul 8, 8:12 PM MDT | Severe Thunderstorm Warning | GGW | McCone | 63 min |
| Jul 8, 8:15 PM MDT | Severe Thunderstorm Warning | GGW | McCone | 60 min |
| Jul 8, 8:38 PM MDT | Severe Thunderstorm Warning | GGW | Dawson | 67 min |
| Jul 8, 8:43 PM MDT | Severe Thunderstorm Warning | GGW | Roosevelt | 62 min |
| Jul 8, 8:45 PM MDT | Severe Thunderstorm Warning | GGW | Prairie | 60 min |
| Jul 8, 8:59 PM MDT | Severe Thunderstorm Warning | GGW | Daniels | 61 min |
Nearby
Tornado Warnings in Montana, 2002Every tornado warning in 2002Tornadoes in 2002
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.