Alert archive / North Dakota / Severe Thunderstorm Warnings in 2012

Severe Thunderstorm Warning 21, NWS Bismarck, ND

May 22, 2012LaMoure County, Logan County, Stutsman County, North Dakota

NWS Bismarck, ND issued this severe thunderstorm warning at May 22, 2012, 8:41 PM CDT for LaMoure County, Logan County, Stutsman County, North Dakota. It was in force for 49 min. 7 reports 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: May 22, 2012, 8:41 PM CDT (01:41 UTC)
Expired: May 22, 2012, 9:30 PM CDT
In force: 49 min
Issued by: NWS Bismarck, ND
Area: Storm-based polygon
Hail: 1.75 in
Wind: 50.0 mph

Counties LaMoure County, ND, Logan County, ND, Stutsman County, ND

The radar

The Fargo/Grand Forks radar (KMVX), 128 km from the middle of the area, began a volume at 01:44 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
May 22, 8:55 PM CDT	HAIL 1.75	2 S Windsor, ND	GOLF BALL SIZED HAIL REPORTED
May 22, 9:00 PM CDT	TSTM WND GST 60	10 S Jamestown, ND	ESTIMATED 60 MPH WINDS AND REPORTED NO DAMAGE.
May 22, 9:00 PM CDT	HAIL 1	10 S Jamestown, ND	QUARTER SIZED HAIL DAMAGED CAR. SPOTTER REPORTED SEEING WALL CLOUD 20 MINUTES PRIOR NEAR SAME LOCATION.
May 22, 9:07 PM CDT	TSTM WND GST 60	5 N Jamestown, ND	RELAYED FROM EM... HAIL OCCURRING DURING CALL
May 22, 9:07 PM CDT	HAIL 1	5 N Jamestown, ND	RELAYED FROM EM... HAIL OCCURRING DURING CALL
May 22, 9:10 PM CDT	TSTM WND GST 60	Buchanan, ND	SOME BRANCHES ON THE GROUND
May 22, 9:20 PM CDT	HAIL 0.88	Buchanan, ND	MOST HAIL WAS PEA SIZED BUT SOME NICKEL SIZED. HAIL LASTED FOR 10 MINUTES.

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
May 22, 4:03 PM CDT	Tornado Watch	SPC	7 hr
May 22, 5:54 PM CDT	Severe Thunderstorm Watch	SPC	7 hr

The nearest sounding before it

Bismarck Municip, ND (KBIS), launched 00:00Z, 1.7 hours before the alert went out and 150 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: 1372 J/kg
Mixed-layer CIN: -73 J/kg
Mixed-layer LCL: 1878 m above ground
0-6 km bulk shear: 40 kt
0-1 km storm-relative helicity: 68 m²/s²
0-3 km storm-relative helicity: 99 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 1.6

Open this sounding in Storm Lab

The text

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

259 
WUUS53 KBIS 230141
SVRBIS
NDC045-047-093-230230-
/O.NEW.KBIS.SV.W.0021.120523T0141Z-120523T0230Z/

BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE BISMARCK ND
841 PM CDT TUE MAY 22 2012

THE NATIONAL WEATHER SERVICE IN BISMARCK HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...
  NORTHWESTERN LAMOURE COUNTY IN SOUTHEAST NORTH DAKOTA
  NORTHEASTERN LOGAN COUNTY IN SOUTHEAST NORTH DAKOTA
  EASTERN STUTSMAN COUNTY IN SOUTHEAST NORTH DAKOTA
  THIS INCLUDES THE CITY OF JAMESTOWN

* UNTIL 930 PM CDT.

* AT 840 PM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
  SEVERE THUNDERSTORM CAPABLE OF PRODUCING GOLF BALL SIZE HAIL.  THIS
  STORM WAS LOCATED 7 MILES NORTH OF ALFRED...AND MOVING NORTHEAST AT
  45 MPH.

* LOCATIONS IMPACTED INCLUDE...
  JAMESTOWN...WINDSOR...SYDNEY...ELDRIDGE...YPSILANTI...BUCHANAN...
  SPIRITWOOD...SPIRITWOOD LAKE AND COURTENAY.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

REPORT SEVERE WEATHER TO THE NATIONAL WEATHER SERVICE IN BISMARCK AT
701-223-4582.

&&

A TORNADO WATCH REMAINS IN EFFECT UNTIL 1100 PM CDT TUESDAY EVENING
FOR EASTERN NORTH DAKOTA.

LAT...LON 4646 9920 4674 9928 4734 9848 4732 9845
      4699 9846 4698 9843 4684 9842
TIME...MOT...LOC 0142Z 234DEG 38KT 4672 9896
WIND...HAIL <50MPH 1.75IN

$$

SCHECK

3 follow-up statements

547 
WWUS53 KBIS 230200
SVSBIS

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE BISMARCK ND
900 PM CDT TUE MAY 22 2012

NDC045-047-093-230230-
/O.CON.KBIS.SV.W.0021.000000T0000Z-120523T0230Z/
LAMOURE ND-LOGAN ND-STUTSMAN ND-
900 PM CDT TUE MAY 22 2012

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT FOR EASTERN
STUTSMAN...NORTHEASTERN LOGAN AND NORTHWESTERN LAMOURE COUNTIES UNTIL
930 PM CDT...

AT 858 PM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
SEVERE THUNDERSTORM CAPABLE OF PRODUCING GOLF BALL SIZE HAIL.  THIS
STORM WAS LOCATED 6 MILES NORTH OF SYDNEY...OR 7 MILES SOUTH OF
JAMESTOWN...MOVING NORTHEAST AT 45 MPH.

LOCATIONS IMPACTED INCLUDE...
  JAMESTOWN...YPSILANTI...BUCHANAN...SPIRITWOOD...SPIRITWOOD LAKE AND
  COURTENAY.

AT 855 PM CDT...EMERGENCY MANAGEMENT REPORTED GOLFBALL SIZE HAIL 2 
MILES SOUTH OF WINDSOR.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A TORNADO WATCH REMAINS IN EFFECT FOR THE WARNED AREA. TORNADOES CAN
DEVELOP QUICKLY FROM SEVERE THUNDERSTORMS. ALTHOUGH 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.

REPORT SEVERE WEATHER TO THE NATIONAL WEATHER SERVICE IN BISMARCK AT
701-223-4582.

&&

LAT...LON 4650 9912 4673 9903 4691 9905 4734 9848
      4732 9845 4699 9846 4698 9843 4684 9842
TIME...MOT...LOC 0159Z 234DEG 38KT 4682 9874
WIND...HAIL <50MPH 1.75IN

$$

SCHECK

122 
WWUS53 KBIS 230208
SVSBIS

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE BISMARCK ND
908 PM CDT TUE MAY 22 2012

NDC045-047-093-230230-
/O.CON.KBIS.SV.W.0021.000000T0000Z-120523T0230Z/
LAMOURE ND-LOGAN ND-STUTSMAN ND-
908 PM CDT TUE MAY 22 2012

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT FOR EASTERN
STUTSMAN...NORTHEASTERN LOGAN AND NORTHWESTERN LAMOURE COUNTIES UNTIL
930 PM CDT...

AT 907 PM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
SEVERE THUNDERSTORM CAPABLE OF PRODUCING GOLF BALL SIZE HAIL...AND
DESTRUCTIVE WINDS IN EXCESS OF 70 MPH.  THIS STORM WAS LOCATED 6
MILES WEST OF SPIRITWOOD LAKE...OR 9 MILES NORTH OF JAMESTOWN...
MOVING NORTHEAST AT 50 MPH.

LOCATIONS IMPACTED INCLUDE...
  SPIRITWOOD LAKE AND COURTENAY.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A TORNADO WATCH REMAINS IN EFFECT FOR THE WARNED AREA. TORNADOES CAN
DEVELOP QUICKLY FROM SEVERE THUNDERSTORMS. ALTHOUGH 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 DESTRUCTIVE WINDS AND LARGE
DAMAGING HAIL. SEEK SHELTER NOW INSIDE A STURDY STRUCTURE AND STAY
AWAY FROM WINDOWS.

REPORT SEVERE WEATHER TO THE NATIONAL WEATHER SERVICE IN BISMARCK AT
701-223-4582.

&&

LAT...LON 4698 9843 4684 9842 4650 9912 4665 9906
      4675 9895 4697 9896 4734 9848 4732 9845
      4699 9846
TIME...MOT...LOC 0208Z 225DEG 44KT 4705 9868
WIND...HAIL 70MPH 1.75IN

$$

SCHECK

649 
WWUS53 KBIS 230231
SVSBIS

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE BISMARCK ND
931 PM CDT TUE MAY 22 2012

NDC045-047-093-230241-
/O.EXP.KBIS.SV.W.0021.000000T0000Z-120523T0230Z/
LAMOURE ND-LOGAN ND-STUTSMAN ND-
931 PM CDT TUE MAY 22 2012

...THE SEVERE THUNDERSTORM WARNING FOR EASTERN STUTSMAN...
NORTHEASTERN LOGAN AND NORTHWESTERN LAMOURE COUNTIES HAS EXPIRED...

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

ADDITIONAL STRONG THUNDERSTORMS ARE STILL POSSIBLE...AND A TORNADO 
WATCH REMAINS IN EFFECT UNTIL 11 PM CDT.

LAT...LON 4698 9843 4684 9842 4650 9912 4665 9906
      4675 9895 4697 9896 4734 9848 4732 9845
      4699 9846
TIME...MOT...LOC 0208Z 225DEG 44KT 4705 9868

$$

SCHECK

The office that day

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

Issued	Product	Office	Counties	Lasted
May 22, 7:19 PM CDT	Severe Thunderstorm Warning	BIS	Dickey, LaMoure, Logan, McIntosh	56 min
May 22, 8:03 PM CDT	Severe Thunderstorm Warning	BIS	LaMoure, Logan, Stutsman	42 min
May 22, 8:09 PM CDT	Severe Thunderstorm Warning	BIS	LaMoure, Logan, Stutsman	36 min
May 22, 8:12 PM CDT	Severe Thunderstorm Warning	BIS	LaMoure, Logan, McIntosh	33 min
May 22, 8:40 PM CDT	Severe Thunderstorm Warning	BIS	Dickey, LaMoure, Logan, McIntosh	41 min
May 22, 8:42 PM CDT	Severe Thunderstorm Warning	BIS	Bottineau	33 min
May 22, 9:02 PM CDT	Severe Thunderstorm Warning	BIS	LaMoure, Stutsman	28 min
May 22, 9:19 PM CDT	Severe Thunderstorm Warning	BIS	LaMoure, Stutsman	56 min
May 22, 9:26 PM CDT	Tornado Warning	BIS	LaMoure, Stutsman	13 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.