Alert archive / North Dakota / Severe Thunderstorm Watches in 2005

Severe Thunderstorm Watch 497

June 18, 20054 counties in Montana; 11 counties in North Dakota; Harding County, South Dakota

The Storm Prediction Center issued this severe thunderstorm watch at Jun 18, 2005, 9:10 PM MDT for 4 counties in Montana; 11 counties in North Dakota; Harding County, South Dakota. It was in force for 7 hr.

The area

The outline as issued.

The facts

Issued
Jun 18, 2005, 9:10 PM MDT (03:10 UTC)
Expired
Jun 19, 2005, 4:00 AM MDT
In force
7 hr
Issued by
the Storm Prediction Center

Counties Carter County, MT, Fallon County, MT, Powder River County, MT, Wibaux County, MT, Adams County, ND, Billings County, ND, Bowman County, ND, Dunn County, ND, Golden Valley County, ND, Hettinger County, ND, McKenzie County, ND, McLean County, ND, Mercer County, ND, Slope County, ND, Stark County, ND, Harding County, SD

Warnings issued inside it

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

IssuedProductOfficeCountiesLasted
Jun 18, 10:09 PM MDTSevere Thunderstorm WarningBYZCuster, Powder River66 min
Jun 18, 10:28 PM MDTSevere Thunderstorm WarningBYZCarter62 min
Jun 18, 11:07 PM MDTSevere Thunderstorm WarningBISBowman53 min
Jun 18, 11:18 PM MDTSevere Thunderstorm WarningBISBillings, Golden Valley, Slope42 min
Jun 18, 11:20 PM MDTSevere Thunderstorm WarningBYZFallon49 min
Jun 18, 11:32 PM MDTSevere Thunderstorm WarningBYZCarter45 min
Jun 18, 11:42 PM MDTSevere Thunderstorm WarningBISBillings, Stark63 min
Jun 18, 11:55 PM MDTSevere Thunderstorm WarningUNRHarding55 min
Jun 19, 12:02 AM MDTSevere Thunderstorm WarningBISHettinger, Slope58 min
Jun 19, 12:03 AM MDTSevere Thunderstorm WarningBISBowman57 min
Jun 19, 12:25 AM MDTTornado WarningBISStark50 min
Jun 19, 12:44 AM MDTSevere Thunderstorm WarningBISDunn, Stark46 min
Jun 19, 1:01 AM MDTSevere Thunderstorm WarningBISGrant, Mercer, Morton, Oliver59 min
Jun 19, 1:02 AM MDTSevere Thunderstorm WarningBISHettinger43 min
Jun 19, 1:23 AM MDTTornado WarningBISMercer, Oliver37 min
Jun 19, 1:33 AM MDTSevere Thunderstorm WarningBISStark42 min
Jun 19, 2:01 AM MDTSevere Thunderstorm WarningBISMercer, Morton35 min
Jun 19, 2:18 AM MDTSevere Thunderstorm WarningBISBurleigh, McLean, Sheridan57 min
Jun 19, 2:30 AM MDTTornado WarningBISBurleigh, McLean32 min
Jun 19, 2:50 AM MDTSevere Thunderstorm WarningBISMcLean, Oliver16 min

Discussions around it

SPC mesoscale discussions over the same counties from four hours before the watch to its end.

The nearest sounding before it

Bismarck Municip, ND (KBIS), launched 00:00Z, 3.2 hours before the alert went out and 276 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, Bismarck Municip, ND at 00:00Z on 2005-06-19Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 3392 joules per kilogram.LCLEL10008507005003002001001 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, Bismarck Municip, ND at 00:00Z on 2005-06-19The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 54 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
3392 J/kg
Mixed-layer CIN
-3 J/kg
Mixed-layer LCL
1315 m above ground
0-6 km bulk shear
28 kt
0-1 km storm-relative helicity
54 m²/s²
0-3 km storm-relative helicity
79 m²/s²
Significant tornado parameter
0.5
Supercell composite
4.3

Open this sounding in Storm Lab

SPC that day

Everything else SPC issued on the same UTC day.

IssuedProductOfficeCountiesLasted
Jun 18, 8:16 PM MDTMesoscale DiscussionSPCBig Horn, Carter, Custer, Fallon, Powder River, Wibaux119 min
Jun 19, 12:35 AM MDTMesoscale DiscussionSPCCarter, Fallon, Powder River, Wibaux85 min
Jun 19, 4:03 PM MDTMesoscale DiscussionSPCBig Horn, Carter, Powder River2 hr
Jun 19, 12:50 AM MDTSevere Thunderstorm WatchSPCAdams, Benson, Bottineau, Burleigh, Emmons, Grant and 15 more6 hr
Jun 19, 2:32 AM MDTMesoscale DiscussionSPCMcLean88 min
Jun 19, 4:07 AM MDTMesoscale DiscussionSPCBenson, Cavalier, Pembina, Ramsey, Towner, Walsh83 min
Jun 19, 2:23 PM MDTMesoscale DiscussionSPCCass, Grand Forks, Griggs, Steele, Traill97 min
Jun 19, 2:30 PM MDTSevere Thunderstorm WatchSPCBarnes, Cass, Grand Forks, Griggs, Ransom, Richland and 3 more8 hr
Jun 19, 2:57 PM MDTMesoscale DiscussionSPCDickey, Emmons, LaMoure, Logan, McIntosh, Sioux and 1 more2 hr

Nearby

Severe Thunderstorm Watches in North Dakota, 2005Severe Thunderstorm Watches in Montana, 2005Severe Thunderstorm Watches in South Dakota, 2005Every severe thunderstorm watch in 2005

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.