Alert archive / Montana / Severe Thunderstorm Watches in 2002

Severe Thunderstorm Watch 399

June 8, 20026 counties in Montana; Divide County, McKenzie County, Williams County, North Dakota

The Storm Prediction Center issued this severe thunderstorm watch at Jun 8, 2002, 5:00 PM MDT for 6 counties in Montana; Divide County, McKenzie County, Williams County, North Dakota. It was in force for 5 hr.

The area

The outline as issued.

The facts

Issued
Jun 8, 2002, 5:00 PM MDT (23:00 UTC)
Expired
Jun 8, 2002, 10:00 PM MDT
In force
5 hr
Issued by
the Storm Prediction Center

Counties Daniels County, MT, Dawson County, MT, McCone County, MT, Richland County, MT, Roosevelt County, MT, Sheridan County, MT, Divide County, ND, McKenzie County, ND, Williams County, ND

The radar

The Glasgow radar (KGGW), 158 km from the middle of the area, began a volume at 23:00 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.

Warnings issued inside it

4 tornado, severe thunderstorm and flash flood warnings for its counties while it was in force.

IssuedProductOfficeCountiesLasted
Jun 8, 5:34 PM MDTSevere Thunderstorm WarningGGWDawson56 min
Jun 8, 5:58 PM MDTSevere Thunderstorm WarningGGWMcCone, Richland, Roosevelt62 min
Jun 8, 8:16 PM MDTSevere Thunderstorm WarningGGWRichland44 min
Jun 8, 8:22 PM MDTSevere Thunderstorm WarningGGWRichland38 min

The nearest sounding before it

Glasgow Intl Airport, MT (KGGW), launched 12:00Z, 11.0 hours before the alert went out and 156 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 2002-06-08Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 0 joules per kilogram.LCL10008507005003002001001 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 2002-06-08The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 285 square meters per square second.19395878Sfc1 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
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

SPC that day

Everything else SPC issued on the same UTC day.

IssuedProductOfficeCountiesLasted
Jun 8, 1:15 PM MDTTornado WatchSPCCarter, Custer, Fallon, Powder River, Prairie, Wibaux6 hr

Nearby

Severe Thunderstorm Watches in Montana, 2002Severe Thunderstorm Watches in North Dakota, 2002Every severe thunderstorm watch 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; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.