Alert archive / North Dakota / Severe Thunderstorm Warnings in 2012

Severe Thunderstorm Warning 151, NWS Bismarck, ND

July 22, 2012LaMoure County, North Dakota

NWS Bismarck, ND issued this severe thunderstorm warning at Jul 22, 2012, 5:48 PM CDT for LaMoure County, North Dakota. It was in force for 57 min. 1 report came from inside the area while it was in force.

The area

The outline as issued, with what was reported inside it.

The facts

Issued: Jul 22, 2012, 5:48 PM CDT (22:48 UTC)
Expired: Jul 22, 2012, 6:45 PM CDT
In force: 57 min
Issued by: NWS Bismarck, ND
Area: Storm-based polygon
Hail: 1.0 in
Wind: 60.0 mph

County LaMoure County, ND

The radar

The Aberdeen radar (KABR), 104 km from the middle of the area, began a volume at 22:49 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.

What was reported inside it

Time	Report	Where	Remark
Jul 22, 6:15 PM CDT	HAIL 1.75	1 Sse Verona, ND	30 TO 40 MPH WINDS. 0.90 INCHES OF RAINFALL.

Local storm reports filed while the alert was in force, from inside its polygon or its counties.

The watch it was issued in

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

Issued	Product	Office	Lasted
Jul 22, 5:45 PM CDT	Severe Thunderstorm Watch	SPC	4 hr

The nearest sounding before it

Aberdeen, SD (KABR), launched 12:00Z, 10.8 hours before the alert went out and 165 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: 2180 J/kg
Mixed-layer CIN: -207 J/kg
Mixed-layer LCL: 1248 m above ground
0-6 km bulk shear: 31 kt
0-1 km storm-relative helicity: 5 m²/s²
0-3 km storm-relative helicity: 33 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.1

Open this sounding in Storm Lab

The text

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

083 
WUUS53 KBIS 222248
SVRBIS
NDC045-222345-
/O.NEW.KBIS.SV.W.0151.120722T2248Z-120722T2345Z/

BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE BISMARCK ND
548 PM CDT SUN JUL 22 2012

THE NATIONAL WEATHER SERVICE IN BISMARCK HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...
  SOUTHEASTERN LAMOURE COUNTY IN SOUTHEAST NORTH DAKOTA

* UNTIL 645 PM CDT

* AT 544 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 NEAR
  VERONA...OR 37 MILES SOUTH OF VALLEY CITY...AND MOVING EAST AT 20
  MPH.

* LOCATIONS IMPACTED INCLUDE...
  VERONA.

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 4628 9805 4628 9813 4633 9836 4653 9828
      4651 9802 4645 9802 4629 9803
TIME...MOT...LOC 2249Z 291DEG 17KT 4638 9811
WIND...HAIL 60MPH 1.00IN

$$

HEINERT

3 follow-up statements

578 
WWUS53 KBIS 222306
SVSBIS

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE BISMARCK ND
606 PM CDT SUN JUL 22 2012

NDC045-222345-
/O.CON.KBIS.SV.W.0151.000000T0000Z-120722T2345Z/
LAMOURE ND-
606 PM CDT SUN JUL 22 2012

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT FOR SOUTHEASTERN
LAMOURE COUNTY UNTIL 645 PM CDT...

AT 602 PM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
SEVERE THUNDERSTORM CAPABLE OF PRODUCING GOLF BALL SIZE HAIL...AND
DAMAGING WINDS IN EXCESS OF 60 MPH.  THIS STORM WAS LOCATED NEAR
VERONA...OR 39 MILES SOUTH OF VALLEY CITY...MOVING EAST AT 20 MPH.

LOCATIONS IMPACTED INCLUDE...

PRECAUTIONARY/PREPAREDNESS ACTIONS...

THIS STORM HAS A HISTORY OF PRODUCING LARGE HAIL WEST OF VERONA. 
SEEK SHELTER NOW INSIDE A STURDY STRUCTURE AND STAY AWAY FROM 
WINDOWS.

VERY HEAVY RAIN IS ALSO OCCURRING WITH THIS STORM...AND MAY LEAD TO
FLASH FLOODING. DO NOT DRIVE YOUR VEHICLE THROUGH FLOODED ROADWAYS.

&&

LAT...LON 4628 9805 4628 9813 4633 9836 4653 9828
      4651 9802 4645 9802 4629 9803
TIME...MOT...LOC 2306Z 291DEG 17KT 4635 9800
WIND...HAIL 60MPH 1.75IN

$$

HEINERT

288 
WWUS53 KBIS 222319
SVSBIS

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE BISMARCK ND
619 PM CDT SUN JUL 22 2012

NDC045-222345-
/O.CON.KBIS.SV.W.0151.000000T0000Z-120722T2345Z/
LAMOURE ND-
619 PM CDT SUN JUL 22 2012

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT FOR SOUTHEASTERN
LAMOURE COUNTY UNTIL 645 PM CDT...

AT 616 PM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
SEVERE THUNDERSTORM CAPABLE OF PRODUCING GOLF BALL SIZE HAIL...AND
DAMAGING WINDS IN EXCESS OF 60 MPH.  THIS STORM WAS LOCATED 5 MILES
SOUTHEAST OF VERONA...OR 42 MILES SOUTH OF VALLEY CITY...MOVING EAST
AT 20 MPH.

LOCATIONS IMPACTED INCLUDE...

PRECAUTIONARY/PREPAREDNESS ACTIONS...

THIS STORM HAS EXHIBITED SOME WEAK ROTATION. TORNADOES CAN DEVELOP
QUICKLY FROM SEVERE THUNDERSTORMS. ALTHOUGH ONE IS NOT IMMEDIATELY
LIKELY...IF A TORNADO IS SPOTTED...ACT QUICKLY AND MOVE TO A PLACE OF
SAFETY INSIDE A STURDY STRUCTURE... SUCH AS A BASEMENT OR SMALL
INTERIOR ROOM.

THIS STORM HAS A HISTORY OF PRODUCING LARGE HAIL. SEEK SHELTER NOW
INSIDE A STURDY STRUCTURE AND STAY AWAY FROM WINDOWS.

VERY HEAVY RAIN IS ALSO OCCURRING WITH THIS STORM...AND MAY LEAD TO
FLASH FLOODING. DO NOT DRIVE YOUR VEHICLE THROUGH FLOODED ROADWAYS.

&&

LAT...LON 4628 9805 4628 9813 4631 9826 4643 9814
      4645 9806 4645 9802 4629 9803
TIME...MOT...LOC 2320Z 291DEG 19KT 4630 9797
WIND...HAIL 60MPH 1.75IN

$$

HEINERT

343 
WWUS53 KBIS 222341
SVSBIS

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE BISMARCK ND
641 PM CDT SUN JUL 22 2012

NDC045-222351-
/O.EXP.KBIS.SV.W.0151.000000T0000Z-120722T2345Z/
LAMOURE ND-
641 PM CDT SUN JUL 22 2012

...THE SEVERE THUNDERSTORM WARNING FOR SOUTHEASTERN LAMOURE COUNTY 
WILL EXPIRE AT 645 PM CDT...

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

LAT...LON 4628 9805 4628 9813 4631 9826 4643 9814
      4645 9806 4645 9802 4629 9803
TIME...MOT...LOC 2341Z 291DEG 19KT 4626 9782

$$

HEINERT

The office that day

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

Issued	Product	Office	Counties	Lasted
Jul 21, 7:41 PM CDT	Severe Thunderstorm Warning	BIS	McKenzie, Williams	64 min
Jul 21, 7:44 PM CDT	Severe Thunderstorm Warning	BIS	Billings, Golden Valley, McKenzie	61 min
Jul 21, 8:42 PM CDT	Severe Thunderstorm Warning	BIS	Burke, Divide, Williams	24 min
Jul 21, 8:49 PM CDT	Severe Thunderstorm Warning	BIS	Billings, Golden Valley, McKenzie	56 min
Jul 21, 10:14 PM CDT	Severe Thunderstorm Warning	BIS	Burke, Divide	61 min
Jul 22, 12:00 AM CDT	Severe Thunderstorm Warning	BIS	Burke, Renville, Ward	30 min
Jul 22, 4:27 PM CDT	Severe Thunderstorm Warning	BIS	Emmons, McIntosh	63 min
Jul 22, 4:45 PM CDT	Severe Thunderstorm Warning	BIS	Emmons, McIntosh	60 min
Jul 22, 5:08 PM CDT	Areal Flood Advisory	BIS	Emmons, McIntosh	2 hr
Jul 22, 5:29 PM CDT	Severe Thunderstorm Warning	BIS	McIntosh	61 min
Jul 22, 6:09 PM CDT	Severe Thunderstorm Warning	BIS	Dickey, LaMoure, Logan, McIntosh	66 min
Jul 22, 6:48 PM CDT	Severe Thunderstorm Warning	BIS	Dickey, LaMoure	47 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; local storm reports from the same archive; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.