Alert archive / Montana / Severe Thunderstorm Watches in 2000

Severe Thunderstorm Watch 534

July 4, 20005 counties in Montana; 5 counties in North Dakota; Harding County, South Dakota

The Storm Prediction Center issued this severe thunderstorm watch at Jul 4, 2000, 5:30 PM MDT for 5 counties in Montana; 5 counties in North Dakota; Harding County, South Dakota. It was in force for 5 hr.

The area

The outline as issued.

The facts

Issued
Jul 4, 2000, 5:30 PM MDT (23:30 UTC)
Expired
Jul 4, 2000, 10:00 PM MDT
In force
5 hr
Issued by
the Storm Prediction Center

Counties Carter County, MT, Dawson County, MT, Fallon County, MT, Richland County, MT, Wibaux County, MT, Billings County, ND, Bowman County, ND, Golden Valley County, ND, McKenzie County, ND, Slope County, ND, Harding County, SD

Warnings issued inside it

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

IssuedProductOfficeCountiesLasted
Jul 4, 5:30 PM MDTSevere Thunderstorm WarningBYZCarter, Powder River60 min
Jul 4, 5:55 PM MDTSevere Thunderstorm WarningGGWDawson65 min
Jul 4, 6:25 PM MDTSevere Thunderstorm WarningBYZFallon65 min
Jul 4, 6:28 PM MDTSevere Thunderstorm WarningBYZCarter62 min
Jul 4, 6:59 PM MDTSevere Thunderstorm WarningGGWDawson61 min
Jul 4, 7:28 PM MDTSevere Thunderstorm WarningBYZFallon62 min
Jul 4, 7:30 PM MDTSevere Thunderstorm WarningGGWRichland60 min
Jul 4, 7:46 PM MDTSevere Thunderstorm WarningGGWWibaux59 min
Jul 4, 8:09 PM MDTSevere Thunderstorm WarningBISBillings, Golden Valley66 min
Jul 4, 9:14 PM MDTSevere Thunderstorm WarningBISBillings46 min

The nearest sounding before it

Rapid City, SD (KUNR), launched 12:00Z, 11.5 hours before the alert went out and 266 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, Rapid City, SD at 12:00Z on 2000-07-04Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 485 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, Rapid City, SD at 12:00Z on 2000-07-04The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity -138 square meters per square second.1939587897117Sfc1 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
485 J/kg
Mixed-layer CIN
-455 J/kg
Mixed-layer LCL
2357 m above ground
0-6 km bulk shear
37 kt
0-1 km storm-relative helicity
-138 m²/s²
0-3 km storm-relative helicity
-151 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.0

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 3, 6:30 PM MDTSevere Thunderstorm WatchSPCDaniels, Dawson, Garfield, McCone, Phillips, Richland and 4 more6 hr
Jul 3, 9:00 PM MDTSevere Thunderstorm WatchSPCCuster, Dawson, Fallon, McCone, Prairie, Richland and 3 more5 hr
Jul 4, 2:30 PM MDTSevere Thunderstorm WatchSPCBig Horn, Custer, Daniels, Dawson, Garfield, McCone and 10 more6 hr

Nearby

Severe Thunderstorm Watches in Montana, 2000Severe Thunderstorm Watches in North Dakota, 2000Severe Thunderstorm Watches in South Dakota, 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.