Alert archive / Montana / Severe Thunderstorm Watches in 2000

Severe Thunderstorm Watch 542

July 5, 200015 counties in Montana

The Storm Prediction Center issued this severe thunderstorm watch at Jul 5, 2000, 6:30 PM MDT for 15 counties in Montana. It was in force for 6 hr.

The area

The outline as issued.

The facts

Issued
Jul 5, 2000, 6:30 PM MDT (00:30 UTC)
Expired
Jul 6, 2000, 12:00 AM MDT
In force
6 hr
Issued by
the Storm Prediction Center

Counties Blaine County, MT, Daniels County, MT, Dawson County, MT, Fergus County, MT, Garfield County, MT, Hill County, MT, McCone County, MT, Petroleum County, MT, Phillips County, MT, Prairie County, MT, Richland County, MT, Roosevelt County, MT, Sheridan County, MT, Valley County, MT, Wibaux County, MT

Warnings issued inside it

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

IssuedProductOfficeCountiesLasted
Jul 5, 7:11 PM MDTSevere Thunderstorm WarningGGWGarfield64 min
Jul 5, 7:25 PM MDTSevere Thunderstorm WarningGGWPetroleum65 min
Jul 5, 8:01 PM MDTSevere Thunderstorm WarningGGWValley59 min
Jul 5, 8:14 PM MDTSevere Thunderstorm WarningGGWGarfield61 min
Jul 5, 8:28 PM MDTSevere Thunderstorm WarningGGWPetroleum62 min
Jul 5, 8:54 PM MDTSevere Thunderstorm WarningTFXFergus36 min
Jul 5, 9:11 PM MDTSevere Thunderstorm WarningGGWPhillips64 min
Jul 5, 9:16 PM MDTSevere Thunderstorm WarningGGWGarfield59 min
Jul 5, 9:17 PM MDTSevere Thunderstorm WarningTFXBlaine, Chouteau, Fergus28 min
Jul 5, 9:44 PM MDTSevere Thunderstorm WarningTFXBlaine31 min
Jul 5, 10:09 PM MDTSevere Thunderstorm WarningGGWPhillips66 min
Jul 5, 10:13 PM MDTSevere Thunderstorm WarningGGWGarfield62 min
Jul 5, 10:20 PM MDTSevere Thunderstorm WarningTFXBlaine40 min
Jul 5, 10:46 PM MDTSevere Thunderstorm WarningTFXBlaine59 min
Jul 5, 10:53 PM MDTSevere Thunderstorm WarningGGWPrairie67 min
Jul 5, 11:07 PM MDTSevere Thunderstorm WarningTFXFergus38 min

The nearest sounding before it

Glasgow Intl Airport, MT (KGGW), launched 00:00Z, 0.5 hours before the alert went out and 85 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 00:00Z on 2000-07-06Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 1390 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 00:00Z on 2000-07-06The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 82 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
1390 J/kg
Mixed-layer CIN
-82 J/kg
Mixed-layer LCL
1773 m above ground
0-6 km bulk shear
56 kt
0-1 km storm-relative helicity
82 m²/s²
0-3 km storm-relative helicity
138 m²/s²
Significant tornado parameter
0.1
Supercell composite
4.6

Open this sounding in Storm Lab

The text

The text of this product is not in the archive. The NWS text archive before 2002 is incomplete.

SPC that day

Everything else SPC issued on the same UTC day.

IssuedProductOfficeCountiesLasted
Jul 5, 11:15 PM MDTSevere Thunderstorm WatchSPCBlaine, Daniels, Dawson, Garfield, McCone, Phillips and 4 more5 hr
Jul 6, 3:15 PM MDTTornado WatchSPCCarter, Fallon, Wibaux5 hr

Nearby

Severe Thunderstorm Watches in Montana, 2000Every severe thunderstorm watch in 2000

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.