Alert archive / Montana / Severe Thunderstorm Warnings in 2002

Severe Thunderstorm Warning 8, NWS Glasgow, MT

June 8, 2002McCone County, Richland County, Roosevelt County, Montana

NWS Glasgow, MT issued this severe thunderstorm warning at Jun 8, 2002, 5:58 PM MDT for McCone County, Richland County, Roosevelt County, Montana. It was in force for 62 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 8, 2002, 5:58 PM MDT (23:58 UTC)
Expired: Jun 8, 2002, 7:00 PM MDT
In force: 62 min
Issued by: NWS Glasgow, MT
Area: Counties, with a storm outline in the text

Counties McCone County, MT, Richland County, MT, Roosevelt County, MT

The radar

The Glasgow radar (KGGW), 116 km from the middle of the area, began a volume at 00:00 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
Jun 8, 6:15 PM MDT	Thunderstorm Wind 51 M	Poplar, MT	Wind gust to 59 mph at Poplar RAWS.

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
Jun 8, 5:00 PM MDT	Severe Thunderstorm Watch	SPC	5 hr

The nearest sounding before it

Glasgow Intl Airport, MT (KGGW), launched 12:00Z, 12.0 hours before the alert went out and 115 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: 0 J/kg
Mixed-layer CIN: No buoyant parcel
Mixed-layer LCL: 1983 m above ground
0-6 km bulk shear: 52 kt
0-1 km storm-relative helicity: 285 m²/s²
0-3 km storm-relative helicity: 484 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.0

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 8, 3:00 PM MDT, 2 hours 58 minutes earlier.

Area forecast discussion, Jun 8, 3:00 PM MDT, 2 hours 58 minutes before

NORTHEAST MONTANA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE GLASGOW MT
300 PM MDT SAT JUN 8 2002

.SHORT TERM...
COMPLEX STORM SYSTEM AFFECTING E MT WELL WITH SEVERE STORMS POISED TO
MOVE INTO MY SE ZONES IN THE NEXT SEVERAL HOURS. HAVE SIDED WITH THE
ETA MODEL MORE THROUGH THIS PERIOD WHICH MOVES SYSTEM OUT AND DRIES OUT
CWA A BIT QUICKER THAN SLOWER/WETTER AVN. QUITE A BIG DIFFERCE BETWEEN
THE MODELS...BUT ETA HAS HAD A GOOD TRACK RECORD.

THEREFORE HAVE TRIMMED POPS DOWN THROUGH MONDAY ACROSS ALL ZONES WITH
CATEGORICAL TONIGHT...LIKELIES SUNDAY...TO SCATTERED/S SUNDAY NIGHT
AND MONDAY. WRAP-AROUND LATER MONDAY MAY BRING RAIN LIKELY.

WINDS TODAY HAVE BEEN LOCALLY HIGHER (IN THE GLASGOW AND FORT PECK
AREAS) COMPARED TO MAV AND FWC NUMBERS...SO HAVE KEPT THE LAKE WIND
ADVISORY GOING FOR TONIGHT.

HAVE WEAKENED THE WORDING FOR TONIGHT/S SEVERE WEATHER ACROSS THE S AND
S ZONES OUTSIDE OF WATCH A BIT (ISOLATED STORMS MAY BE SEVERE).
GOING WATCH LOOKS GOOD.SEE LATEST SWOMCD FOR MORE INFO.

.LONG TERM...
LITTLE TIME TO LOOK AT MEDIUM RANGE MODELS...BUT HAVE DELAYED THE
CHANCE OF PRECIPITATION TO SATURDAY. UPPER RIDGE OVER THE WESTERN
STATES SHOULD ALLOW FOR DRY CONDITIONS WITH A WARMING TREND. NEGATIVELY
TILTED TROF HEADING TOWARD MT FROM CALIFORNIA WILL DECREASE STABILITY
FRIDAY...BUT LOW LEVELS HAVE TO MOISTEN UP FIRST. JAMBA

KGGW RWW 046/058 044/053 045/066 76975564
     BBBB 045/072 045/077 050/077 050/077 761010223
KGDV RWW 048/062 044/055 046/070 76975564
     BBBB 045/073 045/075 054/075 054/075 7610101223

.GGW...TORNADO WATCH FOR PRAIRIE AND WIBAUX COUNTIES UNTIL 7PM.
...LAKE WIND ADVISORY FOR FORT PECK LAKE TONIGHT.

The office that day

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

Issued	Product	Office	Counties	Lasted
Jun 8, 4:33 PM MDT	Severe Thunderstorm Warning	GGW	McCone	57 min
Jun 8, 4:44 PM MDT	Severe Thunderstorm Warning	GGW	Prairie	61 min
Jun 8, 5:25 PM MDT	Severe Thunderstorm Warning	GGW	Wibaux	65 min
Jun 8, 5:34 PM MDT	Severe Thunderstorm Warning	GGW	Dawson	56 min
Jun 8, 5:46 PM MDT	Severe Thunderstorm Warning	GGW	Prairie	59 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; radar from the NEXRAD Level II archive.