Alert archive / North Dakota / Severe Thunderstorm Warnings in 2012

Severe Thunderstorm Warning 5, NWS Bismarck, ND

May 2, 2012Grant County, Sioux County, North Dakota

NWS Bismarck, ND issued this severe thunderstorm warning at May 2, 2012, 5:54 PM MDT for Grant County, Sioux County, North Dakota. It was in force for 66 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 2, 2012, 5:54 PM MDT (23:54 UTC)
Expired: May 2, 2012, 7:00 PM MDT
In force: 66 min
Issued by: NWS Bismarck, ND
Area: Storm-based polygon
Hail: 1.0 in
Wind: 70.0 mph

Counties Grant County, ND, Sioux County, ND

The radar

The Bismarck radar (KBIS), 61 km from the middle of the area, began a volume at 23:54 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 nearest sounding before it

Bismarck Municip, ND (KBIS), launched 12:00Z, 11.9 hours before the alert went out and 62 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: 2081 m above ground
0-6 km bulk shear: 58 kt
0-1 km storm-relative helicity: -40 m²/s²
0-3 km storm-relative helicity: -19 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.

906 
WUUS53 KBIS 022354
SVRBIS
NDC037-085-030100-
/O.NEW.KBIS.SV.W.0005.120502T2354Z-120503T0100Z/

BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE BISMARCK ND
654 PM CDT WED MAY 2 2012

THE NATIONAL WEATHER SERVICE IN BISMARCK HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...
  EAST CENTRAL GRANT COUNTY IN SOUTH CENTRAL NORTH DAKOTA...
  EASTERN SIOUX COUNTY IN SOUTH CENTRAL NORTH DAKOTA...

* UNTIL 800 PM CDT/700 PM MDT/

* AT 549 PM MDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
  SEVERE THUNDERSTORM CAPABLE OF PRODUCING QUARTER SIZE HAIL...AND
  DESTRUCTIVE WINDS IN EXCESS OF 70 MPH.  THIS STORM WAS LOCATED NEAR
  ST. GERTRUDE...OR 45 MILES SOUTHWEST OF BISMARCK...AND MOVING EAST
  AT 40 MPH.

* LOCATIONS IMPACTED INCLUDE...
  SHIELDS...PORCUPINE...SELFRIDGE...PRAIRIE KNIGHTS RESORT AND FORT
  YATES.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

IF YOU ARE IN THE PATH OF THIS STORM...TAKE SHELTER IN A STURDY
BUILDING...AND STAY AWAY FROM WINDOWS.

&&

LAT...LON 4615 10149 4642 10137 4641 10130 4637 10130
      4637 10105 4628 10104 4638 10093 4636 10055
      4628 10058 4624 10055 4612 10063 4604 10060
      4596 10050 4593 10052
TIME...MOT...LOC 2354Z 280DEG 35KT 4626 10123
WIND...HAIL 70MPH 1.00IN

$$

TAEGER

4 follow-up statements

187 
WWUS53 KBIS 030019
SVSBIS

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE BISMARCK ND
719 PM CDT WED MAY 2 2012

NDC037-085-030100-
/O.CON.KBIS.SV.W.0005.000000T0000Z-120503T0100Z/
GRANT ND-SIOUX ND-
719 PM CDT WED MAY 2 2012

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT FOR NORTHEASTERN
SIOUX AND EXTREME EAST CENTRAL GRANT COUNTIES UNTIL 800 PM CDT/700 PM
MDT/...

AT 717 PM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
SEVERE THUNDERSTORM CAPABLE OF PRODUCING QUARTER SIZE HAIL...AND
DESTRUCTIVE WINDS IN EXCESS OF 70 MPH.  THIS STORM WAS LOCATED 9
MILES EAST OF PORCUPINE...OR 41 MILES SOUTH OF BISMARCK...MOVING EAST
AT 40 MPH.

LOCATIONS IMPACTED INCLUDE...
  PRAIRIE KNIGHTS RESORT AND FORT YATES.

LAT...LON 4614 10114 4637 10108 4637 10105 4628 10104
      4638 10092 4636 10055 4628 10058 4624 10055
      4615 10063 4604 10060 4596 10050 4594 10052
TIME...MOT...LOC 0019Z 280DEG 35KT 4622 10088
WIND...HAIL 70MPH 1.00IN

$$

TAEGER/HEINERT

356 
WWUS53 KBIS 030037
SVSBIS

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE BISMARCK ND
737 PM CDT WED MAY 2 2012

NDC037-030047-
/O.CAN.KBIS.SV.W.0005.000000T0000Z-120503T0100Z/
GRANT ND-
637 PM MDT WED MAY 2 2012

...THE SEVERE THUNDERSTORM WARNING FOR EXTREME EAST CENTRAL GRANT
COUNTY IS CANCELLED...

THE STORM WHICH PROMPTED THE WARNING HAS MOVED OUT OF THE WARNED 
AREA.

LAT...LON 4613 10077 4628 10093 4638 10092 4636 10055
      4628 10058 4624 10055 4615 10063 4610 10062
TIME...MOT...LOC 0037Z 280DEG 35KT 4619 10063

$$

NDC085-030100-
/O.CON.KBIS.SV.W.0005.000000T0000Z-120503T0100Z/
SIOUX ND-
737 PM CDT WED MAY 2 2012

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT FOR NORTHEASTERN
SIOUX COUNTY UNTIL 800 PM CDT...

AT 735 PM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
SEVERE THUNDERSTORM CAPABLE OF PRODUCING QUARTER SIZE HAIL...AND
DAMAGING WINDS IN EXCESS OF 60 MPH.  THIS STORM WAS LOCATED 6 MILES
SOUTH OF PRAIRIE KNIGHTS RESORT...OR 43 MILES SOUTH OF BISMARCK...
MOVING EAST AT 40 MPH.

LOCATIONS IMPACTED INCLUDE...
  MAINLY RURAL AREAS OF EASTERN SIOUX COUNTY.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

IF YOU ARE IN THE PATH OF THIS STORM...PREPARE IMMEDIATELY FOR LARGE
HAIL AND DEADLY CLOUD TO GROUND LIGHTNING. PEOPLE OUTSIDE SHOULD MOVE
TO A SHELTER...PREFERABLY INSIDE A STRONG BUILDING AND AWAY FROM
WINDOWS.

&&

LAT...LON 4613 10077 4628 10093 4638 10092 4636 10055
      4628 10058 4624 10055 4615 10063 4610 10062
TIME...MOT...LOC 0037Z 280DEG 35KT 4619 10063
WIND...HAIL 60MPH 1.00IN

$$

HEINERT

021 
WWUS53 KBIS 030044
SVSBIS

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE BISMARCK ND
744 PM CDT WED MAY 2 2012

NDC085-030100-
/O.CON.KBIS.SV.W.0005.000000T0000Z-120503T0100Z/
SIOUX ND-
744 PM CDT WED MAY 2 2012

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT FOR NORTHEASTERN
SIOUX COUNTY UNTIL 800 PM CDT...

AT 740 PM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
SEVERE THUNDERSTORM CAPABLE OF PRODUCING QUARTER SIZE HAIL...AND
DAMAGING WINDS IN EXCESS OF 60 MPH.  THIS STORM WAS LOCATED 7 MILES
SOUTH OF PRAIRIE KNIGHTS RESORT...OR 44 MILES SOUTH OF BISMARCK...
MOVING EAST AT 40 MPH.

LOCATIONS IMPACTED INCLUDE...

PRECAUTIONARY/PREPAREDNESS ACTIONS...

IF YOU ARE IN THE PATH OF THIS STORM...PREPARE IMMEDIATELY FOR LARGE
HAIL AND DEADLY CLOUD TO GROUND LIGHTNING. PEOPLE OUTSIDE SHOULD MOVE
TO A SHELTER...PREFERABLY INSIDE A STRONG BUILDING AND AWAY FROM
WINDOWS.

&&

LAT...LON 4621 10072 4632 10081 4638 10080 4636 10055
      4628 10058 4624 10055 4615 10063
TIME...MOT...LOC 0044Z 280DEG 35KT 4618 10053
WIND...HAIL 60MPH 1.00IN

$$

TAEGER/NH

700 
WWUS53 KBIS 030051
SVSBIS

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE BISMARCK ND
751 PM CDT WED MAY 2 2012

NDC085-030101-
/O.EXP.KBIS.SV.W.0005.000000T0000Z-120503T0100Z/
SIOUX ND-
751 PM CDT WED MAY 2 2012

...THE SEVERE THUNDERSTORM WARNING FOR NORTHEASTERN SIOUX COUNTY WILL
EXPIRE AT 800 PM CDT/700 PM MDT/...

THE STORM WHICH PROMPTED THE WARNING HAS MOVED OUT OF THE WARNED
AREA.

A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT FOR SOUTHERN MORTON 
COUNTY UNTIL 800 PM CDT.

LAT...LON 4621 10072 4632 10081 4638 10080 4636 10055
      4628 10058 4624 10055 4615 10063
TIME...MOT...LOC 0051Z 280DEG 35KT 4617 10043

$$

TAEGER/NH

The office that day

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

Issued	Product	Office	Counties	Lasted
May 2, 5:21 PM MDT	Severe Thunderstorm Warning	BIS	Grant	54 min

Nearby

Severe Thunderstorm Warnings in North Dakota, 2012 Every severe thunderstorm warning in 2012

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.