Alert archive / North Dakota / Severe Thunderstorm Warnings in 2012

Severe Thunderstorm Warning 9, NWS Bismarck, ND

May 2, 2012Dickey County, North Dakota

NWS Bismarck, ND issued this severe thunderstorm warning at May 2, 2012, 9:56 PM CDT for Dickey County, North Dakota. It was in force for 49 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: May 2, 2012, 9:56 PM CDT (02:56 UTC)
Expired: May 2, 2012, 10:45 PM CDT
In force: 49 min
Issued by: NWS Bismarck, ND
Area: Storm-based polygon
Hail: 1.0 in
Wind: 60.0 mph

County Dickey County, ND

The radar

The Aberdeen radar (KABR), 75 km from the middle of the area, began a volume at 02:56 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 2, 10:11 PM CDT	TSTM WND GST 60	Fullerton, ND	ALSO HAS PEA SIZE HAIL. EVENT ONGOING AT THE TIME OF THIS REPORT TRANSMISSION.

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

The nearest sounding before it

Aberdeen, SD (KABR), launched 00:00Z, 2.9 hours before the alert went out and 135 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: 10 J/kg
Mixed-layer CIN: -51 J/kg
Mixed-layer LCL: 2487 m above ground
0-6 km bulk shear: 67 kt
0-1 km storm-relative helicity: 119 m²/s²
0-3 km storm-relative helicity: 170 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.

992 
WUUS53 KBIS 030256
SVRBIS
NDC021-030345-
/O.NEW.KBIS.SV.W.0009.120503T0256Z-120503T0345Z/

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

THE NATIONAL WEATHER SERVICE IN BISMARCK HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...
  DICKEY COUNTY IN SOUTHEAST NORTH DAKOTA...

* UNTIL 1045 PM CDT

* AT 953 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
  FULLERTON...OR 56 MILES SOUTH OF JAMESTOWN...AND MOVING EAST AT 45
  MPH.

* LOCATIONS IMPACTED INCLUDE...
  GUELPH...GLOVER...OAKES AND LUDDEN.

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 4593 9801 4593 9878 4629 9861 4628 9805
      4629 9803 4629 9801 4618 9799 4597 9799
      4594 9799
TIME...MOT...LOC 0256Z 283DEG 37KT 4611 9845
WIND...HAIL 60MPH 1.00IN

$$

TAEGER/NH

2 follow-up statements

000 
WWUS53 KBIS 030327
SVSBIS

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE BISMARCK ND
1027 PM CDT WED MAY 2 2012

NDC021-030345-
/O.CON.KBIS.SV.W.0009.000000T0000Z-120503T0345Z/
DICKEY ND-
1027 PM CDT WED MAY 2 2012

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT FOR EASTERN DICKEY
COUNTY UNTIL 1045 PM CDT...

AT 1024 PM CDT...A CLUSTER OF SEVERE THUNDERSTORMS PRODUCING 60 MPH 
WIND GUSTS AND QUARTER SIZE HAIL...EXTENDED FROM LUDDEN TO 
OAKES...AND WAS MOVING EAST AT 35 MPH.

LOCATIONS IMPACTED INCLUDE...LUDDEN AND OAKES.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

VERY HEAVY RAIN IS ALSO OCCURRING WITH THIS STORM.

&&

LAT...LON 4593 9801 4594 9846 4629 9852 4628 9805
      4629 9801 4618 9799 4598 9800 4597 9799
      4594 9799
TIME...MOT...LOC 0325Z 283DEG 29KT 4606 9813
WIND...HAIL 60MPH 1.00IN

$$

JP MARTIN

495 
WWUS53 KBIS 030346
SVSBIS

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE BISMARCK ND
1046 PM CDT WED MAY 2 2012

NDC021-030356-
/O.EXP.KBIS.SV.W.0009.000000T0000Z-120503T0345Z/
DICKEY ND-
1046 PM CDT WED MAY 2 2012

...THE SEVERE THUNDERSTORM WARNING FOR EASTERN DICKEY COUNTY HAS
EXPIRED...

THE STORM WHICH PROMPTED THE WARNING HAS MOVED OUT OF THE WARNED 
AREA. HOWEVER GUSTY WINDS...UP TO 45 MPH...ARE STILL POSSIBLE BEHIND 
THIS THUNDERSTORM.

LAT...LON 4593 9801 4594 9846 4629 9852 4628 9805
      4629 9801 4618 9799 4598 9800 4597 9799
      4594 9799
TIME...MOT...LOC 0327Z 283DEG 29KT 4606 9811

$$

JP MARTIN

The office that day

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

Issued	Product	Office	Counties	Lasted
May 2, 7:25 PM CDT	Severe Thunderstorm Warning	BIS	Emmons, Morton, Sioux	35 min
May 2, 8:09 PM CDT	Severe Thunderstorm Warning	BIS	Emmons, Kidder, Logan, McIntosh	66 min
May 2, 9:02 PM CDT	Severe Thunderstorm Warning	BIS	Dickey, LaMoure, Logan, McIntosh	58 min
May 3, 12:04 AM CDT	Frost Advisory	BIS	Adams, Billings, Bowman, Burke, Divide, Dunn and 7 more	9 hr
May 3, 5:23 AM CDT	Dense Fog Advisory	BIS	Bottineau, Burke, Divide, McHenry, Mountrail, Pierce and 2 more	5 hr

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.