Alert archive / North Dakota / Special Weather Statements in 2012

Special Weather Statement, NWS Grand Forks, ND

June 14, 20125 counties in North Dakota

NWS Grand Forks, ND issued this special weather statement at Jun 14, 2012, 2:08 AM CDT for 5 counties in North Dakota. It was in force for 37 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
Jun 14, 2012, 2:08 AM CDT (07:08 UTC)
Expired
Jun 14, 2012, 2:45 AM CDT
In force
37 min
Issued by
NWS Grand Forks, ND

Counties Cass County, ND, Ransom County, ND, Richland County, ND, Steele County, ND, Traill County, ND

The radar

The Fargo/Grand Forks radar (KMVX), 47 km from the middle of the area, began a volume at 07:13 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

Aberdeen, SD (KABR), launched 00:00Z, 7.1 hours before the alert went out and 260 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-pSkew-T log-p diagram, Aberdeen, SD at 00:00Z on 2012-06-14Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 1191 joules per kilogram.LCLLFCEL10008507005003002001001 km2 km3 km6 km9 km12 km15 km-30°-20°-10°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Aberdeen, SD at 00:00Z on 2012-06-14The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 29 square meters per square second.19395878Sfc1 km3 km6 km9 kmRMLM
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
1191 J/kg
Mixed-layer CIN
-45 J/kg
Mixed-layer LCL
1769 m above ground
0-6 km bulk shear
39 kt
0-1 km storm-relative helicity
29 m²/s²
0-3 km storm-relative helicity
157 m²/s²
Significant tornado parameter
0.1
Supercell composite
2.0

Open this sounding in Storm Lab

The text

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

201 
WWUS83 KFGF 140708
SPSFGF

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE EASTERN ND/GRAND FORKS ND
208 AM CDT THU JUN 14 2012

NDZ027-029-030-038-039-049-052-053-140745-
BARNES ND-CASS ND-GRAND FORKS ND-RANSOM ND-RICHLAND ND-SARGENT
ND-STEELE ND-TRAILL ND-
208 AM CDT THU JUN 14 2012

...SIGNIFICANT WEATHER ADVISORY FOR SOUTHERN GRAND FORKS COUNTY IN
NORTHEAST NORTH DAKOTA...AND RICHLAND...TRAILL...EASTERN STEELE...
EASTERN SARGENT...EASTERN RANSOM...CASS AND EASTERN BARNES COUNTIES
IN SOUTHEAST NORTH DAKOTA UNTIL 245 AM CDT...

AT 201 AM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR WAS TRACKING
THUNDERSTORMS ALONG A LINE EXTENDING FROM 8 MILES NORTHWEST OF FINLEY
TO 16 MILES WEST OF CASSELTON TO LISBON...MOVING TO THE EAST AT 45 
MPH.

HAIL UP TO ONE-HALF INCH IN DIAMETER AND WIND GUSTS UP TO 50 MPH ARE 
POSSIBLE WITH THE STORMS. 

THE STORMS WILL EXTEND FROM...
NORTHWOOD TO MAYVILLE TO NEAR FARGO TO WEST OF WAHPETON AROUND 240 
AM CDT.

FOR MOTORISTS ON INTERSTATE 29...THE STORMS WILL BE BETWEEN...MILE
MARKERS 10 AND 128...
FOR MOTORISTS ON INTERSTATE 94...THE STORMS WILL BE BETWEEN NORTH
DAKOTA MILE MARKER 319 AND NORTH DAKOTA MILE MARKER 348...

BE PREPARED TO TAKE SHELTER IF THE STORMS INTENSIFY AND BECOME
SEVERE...OR A WARNING IS ISSUED BY THE NATIONAL WEATHER SERVICE.

LAT...LON 4776 9703 4753 9692 4692 9688 4608 9663
      4600 9760 4679 9772 4740 9777 4773 9787
TIME...MOT...LOC 0705Z 257DEG 41KT 4759 9790 4744 9773
          4686 9747 4638 9751

$$

DTR

The office that day

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

IssuedProductOfficeCountiesLasted
Jun 14, 3:41 AM CDTSpecial Weather StatementFGFWilkin64 min
Jun 14, 4:24 AM CDTSpecial Weather StatementFGFGrant36 min
Jun 14, 4:57 PM CDTSpecial Weather StatementFGFLake of the Woods63 min
Jun 14, 1:20 AM CDTSpecial Weather StatementFGFBarnes, Ransom, Sargent55 min
Jun 14, 2:44 AM CDTSevere Thunderstorm WarningFGFRichland, Sargent46 min
Jun 14, 4:53 AM CDTSevere Thunderstorm WarningFGFBarnes, Cass, Ransom, Richland48 min

Nearby

Special Weather Statements in North Dakota, 2012Every special weather statement 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.