Alert archive / Montana / Tornado Warnings in 2003
Tornado Warning 2, NWS Glasgow, MT
NWS Glasgow, MT issued this tornado warning at Aug 6, 2003, 10:30 PM MDT for Garfield County, Montana. It was in force for 60 min. No storm report in the archive falls inside the area while it was in force.
The area
The outline as issued.
The facts
- Issued
- Aug 6, 2003, 10:30 PM MDT (04:30 UTC)
- Expired
- Aug 6, 2003, 11:30 PM MDT
- In force
- 60 min
- Issued by
- NWS Glasgow, MT
- Area
- Counties, with a storm outline in the text
County Garfield County, MT
The radar
The Glasgow radar (KGGW), 78 km from the middle of the area, began a volume at 04:32 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.
The nearest sounding before it
Glasgow Intl Airport, MT (KGGW), launched 00:00Z, 4.5 hours before the alert went out and 79 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
- 29 J/kg
- Mixed-layer CIN
- -218 J/kg
- Mixed-layer LCL
- 3137 m above ground
- 0-6 km bulk shear
- 45 kt
- 0-1 km storm-relative helicity
- 139 m²/s²
- 0-3 km storm-relative helicity
- 299 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.2
The text
As transmitted, in the capitals the NWS used until 2016.
666
WFUS55 KGGW 070430
TORGGW
MTC033-070530-
BULLETIN - EAS ACTIVATION REQUESTED
TORNADO WARNING
NATIONAL WEATHER SERVICE GLASGOW MT
1030 PM MDT WED AUG 6 2003
THE NATIONAL WEATHER SERVICE IN GLASGOW HAS ISSUED A
* TORNADO WARNING FOR...
EASTERN GARFIELD COUNTY IN NORTHEAST MONTANA
* UNTIL 1130 PM MDT
* AT 1027 PM MDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
TORNADO 14 MILES NORTH OF COHAGEN...OR ABOUT 12 MILES EAST OF
JORDAN...MOVING NORTHEAST AT 20 MPH.
* THE TORNADO PRODUCING STORM WILL REMAIN OVER...
RURAL CENTRAL AND EASTERN GARFIELD COUNTY
IF YOU ARE CAUGHT OUTSIDE...SEEK SHELTER IN A NEARBY REINFORCED
BUILDING. AS A LAST RESORT...SEEK SHELTER IN A CULVERT...DITCH OR LOW
SPOT AND COVER YOUR HEAD WITH YOUR HANDS.
THIS WARNING REPLACES THE SEVERE THUNDERSTORM WARNING PREVIOUSLY
ISSUED FOR THE AREA.
LAT...LON 4787 10627 4736 10629 4736 10618 4688 10607
4689 10681 4772 10690 4778 10667 4794 10641
$$
VALONEThe office that day
Everything else NWS Glasgow, MT issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Aug 6, 6:14 PM MDT | Severe Thunderstorm Warning | GGW | Phillips | 61 min |
| Aug 6, 7:16 PM MDT | Severe Thunderstorm Warning | GGW | Phillips | 59 min |
| Aug 6, 8:12 PM MDT | Severe Thunderstorm Warning | GGW | Garfield, Petroleum, Phillips, Valley | 63 min |
| Aug 6, 8:30 PM MDT | Severe Thunderstorm Warning | GGW | Garfield, Phillips, Valley | 60 min |
| Aug 6, 9:18 PM MDT | Severe Thunderstorm Warning | GGW | Garfield | 57 min |
| Aug 6, 9:29 PM MDT | Severe Thunderstorm Warning | GGW | Valley | 61 min |
| Aug 6, 10:13 PM MDT | Severe Thunderstorm Warning | GGW | Garfield | 62 min |
| Aug 6, 11:20 PM MDT | Severe Thunderstorm Warning | GGW | Garfield | 55 min |
| Aug 6, 11:53 PM MDT | Severe Thunderstorm Warning | GGW | Dawson, McCone | 52 min |
| Aug 7, 12:15 AM MDT | Severe Thunderstorm Warning | GGW | Garfield, Valley | 60 min |
| Aug 7, 12:53 AM MDT | Severe Thunderstorm Warning | GGW | Dawson | 67 min |
| Aug 7, 1:25 AM MDT | Severe Thunderstorm Warning | GGW | Richland, Wibaux | 65 min |
| Aug 7, 2:50 AM MDT | Severe Thunderstorm Warning | GGW | Valley | 55 min |
| Aug 7, 5:43 PM MDT | Severe Thunderstorm Warning | GGW | Petroleum | 62 min |
| Aug 7, 5:48 PM MDT | Severe Thunderstorm Warning | GGW | Phillips | 57 min |
Nearby
Tornado Warnings in Montana, 2003Every tornado warning in 2003Tornadoes in 2003
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; radar from the NEXRAD Level II archive.