Alert archive / Montana / Severe Thunderstorm Warnings in 2002

Severe Thunderstorm Warning 29, NWS Glasgow, MT

June 22, 2002Phillips County, Montana

NWS Glasgow, MT issued this severe thunderstorm warning at Jun 22, 2002, 5:06 PM MDT for Phillips 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
Jun 22, 2002, 5:06 PM MDT (23:06 UTC)
Expired
Jun 22, 2002, 6:15 PM MDT
In force
69 min
Issued by
NWS Glasgow, MT
Area
Whole counties

County Phillips County, MT

What was reported inside it

TimeReportWhereRemark
Jun 22, 5:14 PM MDTHail 0.88Malta, 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 watch it was issued in

The SPC watch in force over the same counties when this warning went out.

IssuedProductOfficeLasted
Jun 22, 1:45 PM MDTSevere Thunderstorm WatchSPC5 hr

The nearest sounding before it

Glasgow Intl Airport, MT (KGGW), launched 12:00Z, 11.1 hours before the alert went out and 97 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-pSkew-T log-p diagram, Glasgow Intl Airport, MT at 12:00Z on 2002-06-22Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 1539 joules per kilogram.LCLLFCEL10008507005003002001001 km2 km3 km6 km9 km12 km15 km-30°-20°-10°0°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Glasgow Intl Airport, MT at 12:00Z on 2002-06-22The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 32 square meters per square second.193958Sfc1 km3 km6 km9 kmRMLM
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
1539 J/kg
Mixed-layer CIN
-133 J/kg
Mixed-layer LCL
843 m above ground
0-6 km bulk shear
32 kt
0-1 km storm-relative helicity
32 m²/s²
0-3 km storm-relative helicity
136 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.9

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, 1:29 PM MDT, 3 hours 37 minutes earlier.

Area forecast discussion, Jun 22, 1:29 PM MDT, 3 hours 37 minutes before
NORTHEAST MONTANA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE GLASGOW MT
129 PM MDT SAT JUN 22 2002

.SHORT TERM...FOCUS OF SHORT TERM WILL ONCE AGAIN BE ON SEVERE
THUNDERSTORM DEVELOPMENT. DEWPOINTS ACROSS REGION ARE SOLIDLY IN THE
60S...WITH TEMPERATURES IN THE LOWER TO MID 80S. THIS IS PRODUCING
VERY HIGH CAPE VALUES. THUNDERSTORMS FIRING OVER SOUTHWEST PORTIONS
OF CWA HAVE EXHIBITED EXPLOSIVE DEVELOPMENT AND SHOULD MOVE INTO AN
AREA OF HIGHER INSTABILITY. LIMITING FACTOR SO FAR TODAY HAS BEEN
LACK OF ANY FORCING. AS SHORT WAVE MOVES CLOSER TO CWA EXPECT
WIDESPREAD THUNDERSTORM DEVELOPMENT. AS PER COORDINATION WITH
SPC...BYZ...AND TFX...EXPECT BEST DEVELOPMENT IN THE SHORT TERM OVER
WESTERN HALF OF CWA. REST OF SHORT TERM LOOKS UNSETTLED AS 700MB LOW
TAKES ITS TIME MOVING INTO THE DAKOTAS ON SUNDAY. LINGERING SHOWERS
OVER THE EAST ON MONDAY. WILL NOT MAKE MUCH IN THE WAY OF CHANGES.

.LONG TERM...MODELS STARTING TO SHOW A SLIGHTLY DIFFERENT PATTERN
THAN PREVIOUS RUNS. UPPER LEVEL RIDGE CONTINUES TO DOMINATE THE
WEATHER ON WEDNESDAY AND THURSDAY. MODELS ARE STARTING TO BREAK DOWN
THE RIDGE A BIT ON THURSDAY AND FRIDAY. WITH SUCH AN AMPLIFIED RIDGE
IN PLACE BELIEVE THIS TO BE A BIT QUICK. WILL CONTINUE CURRENT TREND
OF WARM AND DRY THROUGH SATURDAY.  POHL

KGGW TBB 058/075 056/083 056/087 87674111
     BBBB 057/089 056/090 056/090 056/090 8700000000
KGDV TBB 058/076 056/083 054/085 87676111
     BBBB 057/089 056/090 056/090 056/090 8700000000

.GGW...SEVERE THUNDERSTORM WATCH #453 WESTERN HALF OF CWA UNTIL
01Z...

The office that day

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

IssuedProductOfficeCountiesLasted
Jun 21, 9:27 PM MDTSevere Thunderstorm WarningGGWGarfield63 min
Jun 21, 10:04 PM MDTSevere Thunderstorm WarningGGWValley56 min
Jun 21, 10:53 PM MDTSevere Thunderstorm WarningGGWMcCone67 min
Jun 22, 12:31 AM MDTSevere Thunderstorm WarningGGWRichland, Roosevelt59 min
Jun 22, 2:01 AM MDTSevere Thunderstorm WarningGGWDawson59 min
Jun 22, 2:08 AM MDTSevere Thunderstorm WarningGGWWibaux67 min
Jun 22, 3:59 AM MDTSevere Thunderstorm WarningGGWRoosevelt61 min
Jun 22, 1:14 PM MDTSevere Thunderstorm WarningGGWGarfield61 min
Jun 22, 2:12 PM MDTSevere Thunderstorm WarningGGWPetroleum48 min
Jun 22, 2:26 PM MDTSevere Thunderstorm WarningGGWGarfield64 min
Jun 22, 2:29 PM MDTSevere Thunderstorm WarningGGWValley61 min
Jun 22, 2:31 PM MDTSevere Thunderstorm WarningGGWValley59 min
Jun 22, 2:32 PM MDTSevere Thunderstorm WarningGGWValley58 min
Jun 22, 2:42 PM MDTSevere Thunderstorm WarningGGWPhillips63 min
Jun 22, 2:45 PM MDTFlash Flood WarningGGWGarfield3 hr
Jun 22, 3:13 PM MDTSevere Thunderstorm WarningGGWValley62 min
Jun 22, 3:44 PM MDTSevere Thunderstorm WarningGGWPhillips61 min
Jun 22, 5:47 PM MDTSevere Thunderstorm WarningGGWGarfield, Prairie58 min

Nearby

Severe Thunderstorm Warnings in Montana, 2002Every 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.