Alert archive / Montana / Severe Thunderstorm Warnings in 2002

Severe Thunderstorm Warning 18, NWS Glasgow, MT

June 22, 2002Wibaux County, Montana

NWS Glasgow, MT issued this severe thunderstorm warning at Jun 22, 2002, 2:08 AM MDT for Wibaux County, Montana. It was in force for 67 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: Jun 22, 2002, 2:08 AM MDT (08:08 UTC)
Expired: Jun 22, 2002, 3:15 AM MDT
In force: 67 min
Issued by: NWS Glasgow, MT
Area: Whole counties

County Wibaux County, MT

What was reported inside it

Time	Report	Where	Remark
Jun 22, 2:40 AM MDT	Hail 0.75	Wibaux, 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, 8.1 hours before the alert went out and 225 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.

Skew-T log-p

Temperature in red, dew point in green, the mixed-layer parcel dashed.

Hodograph

The wind turning with height, colored by layer: ground to 1 km, 1 to 3 km, 3 to 6 km, 6 to 10 km.

Mixed-layer CAPE: 1320 J/kg
Mixed-layer CIN: -25 J/kg
Mixed-layer LCL: 1902 m above ground
0-6 km bulk shear: 47 kt
0-1 km storm-relative helicity: -3 m²/s²
0-3 km storm-relative helicity: 116 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 2.1

Open this sounding in Storm Lab

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 Jun 22, 2:03 AM MDT, 5 minutes earlier.

Area forecast discussion, Jun 22, 2:03 AM MDT, 5 minutes before

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In the hours before

Special weather statement, Jun 21, 9:00 PM MDT, 5 hours 8 minutes before

MTZ016>027-059>062-220400-

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE GLASGOW MT
900 PM MDT FRI JUN 21 2002

...SEVERE THUNDERSTORM WATCH FOR NORTHEAST MONTANA ALLOWED TO EXPIRE...

SCATTERED STRONG THUNDERSTORMS ARE EXPECTED THE REMAINDER OF
TONIGHT...BUT ANY SEVERE ACTIVITY WILL BE VERY ISOLATED.

KEEP LISTENING TO NOAA WEATHER RADIO FOR THE LATEST FORECAST FROM THE
NATIONAL WEATHER SERVICE.

Local storm report, Jun 22, 1:49 AM MDT, 19 minutes before

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The office that day

Everything else NWS Glasgow, MT issued on the same UTC day.

Issued	Product	Office	Counties	Lasted
Jun 21, 9:27 PM MDT	Severe Thunderstorm Warning	GGW	Garfield	63 min
Jun 21, 10:04 PM MDT	Severe Thunderstorm Warning	GGW	Valley	56 min
Jun 21, 10:53 PM MDT	Severe Thunderstorm Warning	GGW	McCone	67 min
Jun 22, 12:31 AM MDT	Severe Thunderstorm Warning	GGW	Richland, Roosevelt	59 min
Jun 22, 2:01 AM MDT	Severe Thunderstorm Warning	GGW	Dawson	59 min
Jun 22, 3:59 AM MDT	Severe Thunderstorm Warning	GGW	Roosevelt	61 min
Jun 22, 1:14 PM MDT	Severe Thunderstorm Warning	GGW	Garfield	61 min
Jun 22, 2:12 PM MDT	Severe Thunderstorm Warning	GGW	Petroleum	48 min
Jun 22, 2:26 PM MDT	Severe Thunderstorm Warning	GGW	Garfield	64 min
Jun 22, 2:29 PM MDT	Severe Thunderstorm Warning	GGW	Valley	61 min
Jun 22, 2:31 PM MDT	Severe Thunderstorm Warning	GGW	Valley	59 min
Jun 22, 2:32 PM MDT	Severe Thunderstorm Warning	GGW	Valley	58 min
Jun 22, 2:42 PM MDT	Severe Thunderstorm Warning	GGW	Phillips	63 min
Jun 22, 2:45 PM MDT	Flash Flood Warning	GGW	Garfield	3 hr
Jun 22, 3:13 PM MDT	Severe Thunderstorm Warning	GGW	Valley	62 min
Jun 22, 3:44 PM MDT	Severe Thunderstorm Warning	GGW	Phillips	61 min
Jun 22, 5:06 PM MDT	Severe Thunderstorm Warning	GGW	Phillips	69 min
Jun 22, 5:47 PM MDT	Severe Thunderstorm Warning	GGW	Garfield, Prairie	58 min

Nearby

Severe Thunderstorm Warnings in Montana, 2002 Every severe thunderstorm warning 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.