Alert archive / North Dakota / Severe Thunderstorm Warnings in 2009

Severe Thunderstorm Warning 21, NWS Bismarck, ND

May 12, 2009Grant County, Morton County, Oliver County, North Dakota

NWS Bismarck, ND issued this severe thunderstorm warning at May 12, 2009, 5:48 PM MDT for Grant County, Morton County, Oliver County, North Dakota. It was in force for 57 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: May 12, 2009, 5:48 PM MDT (23:48 UTC)
Expired: May 12, 2009, 6:45 PM MDT
In force: 57 min
Issued by: NWS Bismarck, ND
Area: Storm-based polygon

Counties Grant County, ND, Morton County, ND, Oliver County, ND

The radar

The Bismarck radar (KBIS), 40 km from the middle of the area, began a volume at 23:49 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.

Issued	Product	Office	Lasted
May 12, 2:36 PM MDT	Severe Thunderstorm Watch	SPC	7 hr

The nearest sounding before it

Bismarck Municip, ND (KBIS), launched 12:00Z, 11.8 hours before the alert went out and 44 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-p

Temperature in red, dew point in green, the mixed-layer parcel dashed.

Hodograph

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: 1031 m above ground
0-6 km bulk shear: 44 kt
0-1 km storm-relative helicity: 114 m²/s²
0-3 km storm-relative helicity: 144 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 
WWUS53 KBIS 130000
SVSBIS

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE BISMARCK ND
600 PM CDT TUE MAY 12 2009

NDC037-059-065-130045-
/O.CON.KBIS.SV.W.0021.000000T0000Z-090513T0045Z/
GRANT ND-OLIVER ND-MORTON ND-
600 PM CDT TUE MAY 12 2009

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 745 PM CDT 
FOR NORTHERN AND CENTRAL MORTON...OLIVER AND NORTHERN GRANT 
COUNTIES...

AT 659 PM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR CONTINUED TO 
INDICATE A LINE OF SEVERE THUNDERSTORMS CAPABLE OF PRODUCING HAIL UP 
TO THE SIZE OF QUARTERS...AND DAMAGING WINDS IN EXCESS OF 60 
MPH. THESE STORMS WERE LOCATED ALONG A LINE EXTENDING FROM FORT 
CLARK TO 6 MILES SOUTHWEST OF ALMONT...MOVING EAST AT 30 MPH.

SEVERE THUNDERSTORMS WILL BE NEAR...
  NEW SALEM AROUND 700 PM CDT.
  JUDSON AROUND 715 PM CDT.
  SANGER AROUND 725 PM CDT.

OTHER LOCATIONS IMPACTED BY THESE SEVERE THUNDERSTORMS INCLUDE SWEET
BRIAR LAKE...CROSS RANCH STATE PARK AND CROWN BUTTE LAKE.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

VERY HEAVY RAIN...WHICH MAY FLOOD LOW LYING AREAS SUCH AS DITCHES AND
UNDERPASSES...IS ALSO LIKELY. DO NOT DRIVE YOUR VEHICLE ON A FLOODED
ROADWAY.

&&

LAT...LON 4724 10099 4685 10094 4656 10107 4656 10183
      4724 10151
TIME...MOT...LOC 2359Z 267DEG 24KT 4721 10124 4664 10156

$$

HEINERT

2 follow-up statements

000 
WUUS53 KBIS 122348
SVRBIS
NDC037-059-065-130045-
/O.NEW.KBIS.SV.W.0021.090512T2348Z-090513T0045Z/

BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE BISMARCK ND
648 PM CDT TUE MAY 12 2009

THE NATIONAL WEATHER SERVICE IN BISMARCK HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...
  NORTH CENTRAL GRANT COUNTY IN SOUTH CENTRAL NORTH DAKOTA...        
  NORTHERN AND CENTRALMORTON COUNTY IN SOUTH CENTRAL NORTH           
  DAKOTA...  
  OLIVER COUNTY IN SOUTH CENTRAL NORTH DAKOTA...

* UNTIL 745 PM CDT/645 PM MDT/

* AT 645 PM CDT/545 PM MDT/...NATIONAL WEATHER SERVICE DOPPLER RADAR
  INDICATED A LINE OF SEVERE THUNDERSTORMS CAPABLE OF PRODUCING      
  HAIL UP TO THE SIZE OF QUARTERS...AND DESTRUCTIVE WINDS IN EXCESS  
  OF 70 MPH. THESE STORMS WERE LOCATED ALONG A LINE EXTENDING FROM   
  HANNOVER TO 12 MILES SOUTHWEST OF ALMONT...OR ALONG A LINE         
  EXTENDING FROM 37 MILES NORTHWEST OF BISMARCK TO 44 MILES WEST OF  
  BISMARCK...AND MOVING EAST AT 30 MPH.

* SEVERE THUNDERSTORMS WILL BE NEAR...
  NEW SALEM NOW.
  ALMONT AND CENTER AROUND 655 PM CDT.   
  FORT CLARK AROUND 700 PM CDT.
  JUDSON AROUND 710 PM CDT.
  SANGER AROUND 725 PM CDT.

OTHER LOCATIONS IMPACTED BY THESE SEVERE THUNDERSTORMS INCLUDE SWEET
BRIAR LAKE...CROSS RANCH STATE PARK AND CROWN BUTTE LAKE.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

SEVERE THUNDERSTORMS PRODUCE DAMAGING WIND IN EXCESS OF 60 MPH...
DESTRUCTIVE HAIL...DEADLY LIGHTNING...AND VERY HEAVY RAIN. FOR YOUR
PROTECTION MOVE TO AN INTERIOR ROOM ON THE LOWEST FLOOR OF YOUR HOME
OR BUSINESS. HEAVY RAINS FLOOD ROADS QUICKLY SO DO NOT DRIVE INTO
AREAS WHERE WATER COVERS THE ROAD.

&&

LAT...LON 4724 10099 4685 10094 4656 10107 4656 10183
      4724 10151
TIME...MOT...LOC 2346Z 270DEG 24KT 4716 10137 4659 10166

$$

HEINERT

000 
WWUS53 KBIS 130020
SVSBIS

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE BISMARCK ND
720 PM CDT TUE MAY 12 2009

NDC037-059-065-130045-
/O.CON.KBIS.SV.W.0021.000000T0000Z-090513T0045Z/
GRANT ND-OLIVER ND-MORTON ND-
720 PM CDT TUE MAY 12 2009

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 745 PM CDT 
FOR NORTHERN MORTON...OLIVER AND NORTHERN GRANT COUNTIES...

AT 718 PM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR CONTINUED TO
INDICATE A LINE OF SEVERE THUNDERSTORMS CAPABLE OF PRODUCING DAMAGING
WINDS IN EXCESS OF 60 MPH. THESE STORMS WERE LOCATED ALONG A LINE
EXTENDING FROM CROSS RANCH STATE PARK TO 13 MILES SOUTH OF JUDSON...
MOVING EAST AT 30 MPH.

SEVERE THUNDERSTORMS WILL BE NEAR...
  SANGER AROUND 730 PM CDT.

OTHER LOCATIONS IMPACTED BY THESE SEVERE THUNDERSTORMS INCLUDE CROWN
BUTTE LAKE AND CROSS RANCH STATE PARK.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

VERY HEAVY RAIN...WHICH MAY FLOOD LOW LYING AREAS SUCH AS DITCHES AND
UNDERPASSES...IS ALSO LIKELY. DO NOT DRIVE YOUR VEHICLE ON A FLOODED
ROADWAY.

&&

LAT...LON 4724 10099 4685 10094 4656 10107 4656 10183
      4724 10151
TIME...MOT...LOC 0020Z 267DEG 24KT 4721 10110 4665 10117

$$

HEINERT

The office that day

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

Issued	Product	Office	Counties	Lasted
May 12, 2:44 PM MDT	High Wind Watch	BIS	Adams, Billings, Bowman, Golden Valley, Grant, Hettinger and 2 more	12 hr
May 12, 3:30 PM MDT	Severe Thunderstorm Warning	BIS	McLean, Mountrail, Ward	45 min
May 12, 4:03 PM MDT	Severe Thunderstorm Warning	BIS	Dunn, Mercer, Stark	57 min
May 12, 4:15 PM MDT	Severe Thunderstorm Warning	BIS	McHenry, Ward	60 min
May 12, 4:46 PM MDT	Severe Thunderstorm Warning	BIS	McHenry, Ward	29 min
May 12, 5:01 PM MDT	Severe Thunderstorm Warning	BIS	Adams, Grant, Hettinger, Sioux	59 min
May 12, 5:04 PM MDT	Severe Thunderstorm Warning	BIS	Bottineau	41 min
May 12, 5:06 PM MDT	Severe Thunderstorm Warning	BIS	Grant, Mercer, Morton, Oliver	39 min
May 12, 5:27 PM MDT	Severe Thunderstorm Warning	BIS	Grant, Sioux	63 min

Nearby

Severe Thunderstorm Warnings in North Dakota, 2009 Every severe thunderstorm warning in 2009

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.