Alert archive / North Dakota / Severe Thunderstorm Warnings in 2007

Severe Thunderstorm Warning 252, NWS Bismarck, ND

August 7, 2007Adams County, Hettinger County, Slope County, North Dakota

NWS Bismarck, ND issued this severe thunderstorm warning at Aug 7, 2007, 4:40 PM MDT for Adams County, Hettinger County, Slope County, North Dakota. It was in force for 48 min. No storm report in the archive falls inside the area while it was in force.

The area

The outline as issued.

The facts

Issued
Aug 7, 2007, 4:40 PM MDT (22:40 UTC)
Expired
Aug 7, 2007, 5:28 PM MDT
In force
48 min
Issued by
NWS Bismarck, ND
Area
Counties, with a storm outline in the text

Counties Adams County, ND, Hettinger County, ND, Slope County, ND

The radar

The Bismarck radar (KBIS), 175 km from the middle of the area, began a volume at 22:40 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.

The watch it was issued in

The SPC watch in force over the same counties when this warning went out.

IssuedProductOfficeLasted
Aug 7, 2:51 PM MDTSevere Thunderstorm WatchSPC6 hr

The nearest sounding before it

Bismarck Municip, ND (KBIS), launched 12:00Z, 10.7 hours before the alert went out and 179 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 12:00Z on 2007-08-07Temperature 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°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Bismarck Municip, ND at 12:00Z on 2007-08-07The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity -17 square meters per square second.1939587897Sfc1 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
1509 m above ground
0-6 km bulk shear
48 kt
0-1 km storm-relative helicity
-17 m²/s²
0-3 km storm-relative helicity
-25 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.0

Open this sounding in Storm Lab

The text

As transmitted, in the capitals the NWS used until 2016.

000 
WUUS53 KBIS 072241
SVRBIS
NDC001-041-087-072345-
/O.NEW.KBIS.SV.W.0252.070807T2240Z-070807T2345Z/

BULLETIN - EAS ACTIVATION REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE BISMARCK ND
440 PM MDT TUE AUG 7 2007

THE NATIONAL WEATHER SERVICE IN BISMARCK HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...
  NORTHWESTERN ADAMS COUNTY IN SOUTHWEST NORTH DAKOTA...
  NORTHWESTERN HETTINGER COUNTY IN SOUTHWEST NORTH DAKOTA...
  EASTERN SLOPE COUNTY IN SOUTHWEST NORTH DAKOTA...

* UNTIL 545 PM MDT

* AT 436 PM MDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
  SEVERE THUNDERSTORM CAPABLE OF PRODUCING NICKEL SIZE HAIL...AND
  DAMAGING WINDS IN EXCESS OF 60 MPH.  THIS STORM WAS LOCATED 21
  MILES SOUTHWEST OF NEW ENGLAND...OR ABOUT 17 MILES NORTHEAST OF
  BOWMAN...AND MOVING NORTHEAST AT 35 MPH.

* THE SEVERE THUNDERSTORM WILL BE NEAR...
  NEW ENGLAND AND HAVELOCK AROUND 510 PM MDT...

SEVERE THUNDERSTORMS CAN AND SOMETIMES DO PRODUCE TORNADOES WITH
LITTLE OR NO ADVANCED WARNING. FOR YOUR PROTECTION...MOVE TO A PLACE
OF SAFETY IN A STURDY STRUCTURE...SUCH AS A BASEMENT OR SMALL
INTERIOR ROOM.

LAT...LON 4630 10324 4628 10298 4620 10297 4620 10288
      4662 10241 4661 10306

$$

AYD/TSW
2 follow-up statements
000 
WWUS53 KBIS 072311
SVSBIS

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE BISMARCK ND
610 PM CDT TUE AUG 7 2007

NDC001-087-072320-
/O.CAN.KBIS.SV.W.0252.000000T0000Z-070807T2345Z/
SLOPE ND-ADAMS ND-
510 PM MDT TUE AUG 7 2007

...THE SEVERE THUNDERSTORM WARNING FOR ADAMS AND SLOPE COUNTIES IS
CANCELLED...

LAT...LON 4629 10290 4629 10262 4662 10241 4661 10291

$$

NDC041-072345-
/O.CON.KBIS.SV.W.0252.000000T0000Z-070807T2345Z/
HETTINGER ND-
510 PM MDT TUE AUG 7 2007

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 545 PM MDT
FOR WESTERN HETTINGER COUNTY...

AT 509 PM MDT...NATIONAL WEATHER SERVICE DOPPLER RADAR CONTINUED TO
INDICATE A SEVERE THUNDERSTORM CAPABLE OF PRODUCING NICKEL SIZE
HAIL...AND DAMAGING WINDS IN EXCESS OF 60 MPH.  THIS STORM WAS
LOCATED NEAR HAVELOCK...OR ABOUT 30 MILES SOUTH OF DICKINSON...MOVING
NORTHEAST AT 25 MPH.

THE SEVERE THUNDERSTORM WILL BE NEAR...
  HAVELOCK AROUND 515 PM MDT...
  NEW ENGLAND AROUND 520 PM MDT...

DOPPLER RADAR HAS INDICATED SOME WEAK ROTATION WITHIN THIS STORM.
WHILE NOT IMMEDIATELY LIKELY...A TORNADO MAY STILL DEVELOP. IF A
TORNADO IS SPOTTED...ACT QUICKLY AND MOVE TO A PLACE OF SAFETY IN A
STURDY STRUCTURE...SUCH AS A BASEMENT OR SMALL INTERIOR ROOM.

LAT...LON 4629 10290 4629 10262 4662 10241 4661 10291

$$

AYD/VJ
000 
WWUS53 KBIS 072328
SVSBIS

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE BISMARCK ND
628 PM CDT TUE AUG 7 2007

NDC041-072338-
/O.CAN.KBIS.SV.W.0252.000000T0000Z-070807T2345Z/
HETTINGER ND-
528 PM MDT TUE AUG 7 2007

...THE SEVERE THUNDERSTORM WARNING FOR WESTERN HETTINGER COUNTY IS
CANCELLED...

LAT...LON 4629 10290 4629 10262 4662 10241 4661 10291

$$

AYD/VJ

The office that day

Everything else NWS Bismarck, ND issued on the same UTC day.

IssuedProductOfficeCountiesLasted
Aug 7, 4:16 AM MDTRed Flag WarningBISAdams, Billings, Bowman, Dunn, Golden Valley, Hettinger and 3 more14 hr
Aug 7, 3:49 PM MDTSevere Thunderstorm WarningBISBowman56 min
Aug 7, 3:56 PM MDTSevere Thunderstorm WarningBISMountrail64 min
Aug 7, 4:53 PM MDTSevere Thunderstorm WarningBISDunn, Mercer40 min
Aug 7, 4:56 PM MDTSevere Thunderstorm WarningBISBowman62 min
Aug 7, 5:50 PM MDTSevere Thunderstorm WarningBISDunn55 min
Aug 7, 5:59 PM MDTSevere Thunderstorm WarningBISBillings30 min

Nearby

Severe Thunderstorm Warnings in North Dakota, 2007Every severe thunderstorm warning 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.