Alert archive / North Dakota / Severe Thunderstorm Watches in 2007

Severe Thunderstorm Watch 403

June 16, 200739 counties in North Dakota

The Storm Prediction Center issued this severe thunderstorm watch at Jun 16, 2007, 10:06 PM MDT for 39 counties in North Dakota. It was in force for 7 hr.

The area

The outline as issued.

The facts

Issued
Jun 16, 2007, 10:06 PM MDT (04:06 UTC)
Expired
Jun 17, 2007, 4:41 AM MDT
In force
7 hr
Issued by
the Storm Prediction Center
Largest hail expected
1.5 in
Strongest gust expected
50 kt
All 39 counties

Adams County, ND, Barnes County, ND, Benson County, ND, Billings County, ND, Bowman County, ND, Burleigh County, ND, Dickey County, ND, Dunn County, ND, Eddy County, ND, Emmons County, ND, Foster County, ND, Golden Valley County, ND, Grant County, ND, Griggs County, ND, Hettinger County, ND, Kidder County, ND, LaMoure County, ND, Logan County, ND, McHenry County, ND, McIntosh County, ND, McKenzie County, ND, McLean County, ND, Mercer County, ND, Morton County, ND, Mountrail County, ND, Nelson County, ND, Oliver County, ND, Pierce County, ND, Ramsey County, ND, Ransom County, ND, Sargent County, ND, Sheridan County, ND, Sioux County, ND, Slope County, ND, Stark County, ND, Stutsman County, ND, Ward County, ND, Wells County, ND, Williams County, ND

The radar

The Bismarck radar (KBIS), 88 km from the middle of the area, began a volume at 04:07 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.

What SPC expected

The probabilities SPC published with the watch, for the watch area over its life.

Two or more tornadoes
10%
One or more EF2 to EF5 tornadoes
5%
Ten or more severe wind reports
20%
One or more gusts of 65 knots or more
10%
Ten or more severe hail reports
50%
One or more hailstones of 2 inches or more
20%
Six or more combined severe hail and wind reports
70%

Warnings issued inside it

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

IssuedProductOfficeCountiesLasted
Jun 16, 10:36 PM MDTSevere Thunderstorm WarningBISBurleigh, Kidder, Morton54 min
Jun 16, 10:47 PM MDTSevere Thunderstorm WarningBISBurleigh, Kidder58 min
Jun 16, 10:51 PM MDTSevere Thunderstorm WarningBISLaMoure, Logan, McIntosh54 min
Jun 16, 11:02 PM MDTSevere Thunderstorm WarningBISStutsman58 min
Jun 16, 11:15 PM MDTSevere Thunderstorm WarningBISMercer60 min
Jun 16, 11:27 PM MDTTornado WarningBISBurleigh, Kidder33 min
Jun 16, 11:49 PM MDTSevere Thunderstorm WarningBISKidder56 min
Jun 16, 11:52 PM MDTSevere Thunderstorm WarningBISMcLean53 min
Jun 16, 11:57 PM MDTTornado WarningBISBurleigh33 min
Jun 17, 12:08 AM MDTSevere Thunderstorm WarningBISStutsman67 min
Jun 17, 12:39 AM MDTSevere Thunderstorm WarningFGFBarnes66 min
Jun 17, 1:08 AM MDTSevere Thunderstorm WarningBISMcKenzie, Mountrail, Williams67 min
Jun 17, 1:14 AM MDTSevere Thunderstorm WarningBISStutsman61 min
Jun 17, 1:43 AM MDTSevere Thunderstorm WarningFGFBarnes62 min
Jun 17, 2:12 AM MDTTornado WarningFGFBarnes, Cass63 min
Jun 17, 2:29 AM MDTFlash Flood WarningFGFBarnes9 hr
Jun 17, 3:16 AM MDTTornado WarningFGFBarnes, Cass, Ransom59 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, 4.1 hours before the alert went out and 91 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 2007-06-17Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 10 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, Bismarck Municip, ND at 00:00Z on 2007-06-17The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 7 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
10 J/kg
Mixed-layer CIN
-277 J/kg
Mixed-layer LCL
1366 m above ground
0-6 km bulk shear
41 kt
0-1 km storm-relative helicity
7 m²/s²
0-3 km storm-relative helicity
181 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.2

Open this sounding in Storm Lab

SPC that day

Everything else SPC issued on the same UTC day.

IssuedProductOfficeCountiesLasted
Jun 16, 8:06 PM MDTMesoscale DiscussionSPCAdams, Billings, Bowman, Dunn, Golden Valley, Hettinger and 3 more54 min
Jun 17, 1:49 AM MDTMesoscale DiscussionSPCBarnes, Benson, Bottineau, Cass, Cavalier, Eddy and 19 more86 min
Jun 17, 2:09 AM MDTTornado WatchSPCBarnes, Cass, Ransom, Richland6 hr
Jun 17, 4:02 AM MDTMesoscale DiscussionSPCBillings, Golden Valley, McKenzie, Williams58 min
Jun 17, 4:40 AM MDTSevere Thunderstorm WatchSPCBillings, Bottineau, Bowman, Burleigh, Dunn, Golden Valley and 14 more3 hr
Jun 17, 3:08 PM MDTMesoscale DiscussionSPCEddy, Foster, Grand Forks, Griggs, Nelson, Pembina and 4 more67 min
Jun 17, 3:18 PM MDTTornado WatchSPCGrand Forks, Griggs, Nelson, Pembina, Steele, Traill and 1 more8 hr
Jun 17, 3:44 PM MDTMesoscale DiscussionSPCBurleigh, Dickey, Emmons, Foster, Kidder, LaMoure and 8 more91 min
Jun 17, 4:13 PM MDTTornado WatchSPCBarnes, Burleigh, Cass, Dickey, Eddy, Emmons and 12 more7 hr

Nearby

Severe Thunderstorm Watches in North Dakota, 2007Every severe thunderstorm watch in 2007

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.