Alert archive / North Dakota / Special Weather Statements in 2012

Special Weather Statement, NWS Grand Forks, ND

June 30, 2012Barnes County, North Dakota

NWS Grand Forks, ND issued this special weather statement at Jun 30, 2012, 8:24 PM CDT for Barnes 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
Jun 30, 2012, 8:24 PM CDT (01:24 UTC)
Expired
Jun 30, 2012, 9:30 PM CDT
In force
66 min
Issued by
NWS Grand Forks, ND

County Barnes County, ND

The radar

The Fargo/Grand Forks radar (KMVX), 79 km from the middle of the area, began a volume at 01:27 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 00:00Z, 1.4 hours before the alert went out and 206 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, Bismarck Municip, ND at 00:00Z on 2012-07-01Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 1260 joules per kilogram.LCLLFCEL10008507005003002001001 km2 km3 km6 km9 km12 km15 km-30°-20°-10°0°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Bismarck Municip, ND at 00:00Z on 2012-07-01The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 64 square meters per square second.193958Sfc1 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
1260 J/kg
Mixed-layer CIN
-70 J/kg
Mixed-layer LCL
1979 m above ground
0-6 km bulk shear
42 kt
0-1 km storm-relative helicity
64 m²/s²
0-3 km storm-relative helicity
75 m²/s²
Significant tornado parameter
0.0
Supercell composite
2.7

Open this sounding in Storm Lab

The text

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

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What forecasters said that day

The local office's own words before this special weather statement went out, as it sent them, from the Iowa Environmental Mesonet's archive of National Weather Service text.

NWS Grand Forks, ND wrote its last area forecast discussion before this special weather statement went out at Jun 30, 2:30 PM CDT, 5 hours 54 minutes earlier.

Area forecast discussion, Jun 30, 2:30 PM CDT, 5 hours 54 minutes before
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Hazardous weather outlook, Jun 30, 6:49 AM CDT, 13 hours 35 minutes before
HAZARDOUS WEATHER OUTLOOK
NATIONAL WEATHER SERVICE GRAND FORKS ND
649 AM CDT SAT JUN 30 2012

MNZ001>009-013>017-022>024-027>032-040-NDZ006>008-014>016-024-
026>030-038-039-049-052>054-011200-
WEST POLK-NORMAN-CLAY-KITTSON-ROSEAU-LAKE OF THE WOODS-
WEST MARSHALL-EAST MARSHALL-NORTH BELTRAMI-PENNINGTON-RED LAKE-
EAST POLK-NORTH CLEARWATER-SOUTH BELTRAMI-MAHNOMEN-
SOUTH CLEARWATER-HUBBARD-WEST BECKER-EAST BECKER-WILKIN-
WEST OTTER TAIL-EAST OTTER TAIL-WADENA-GRANT-TOWNER-CAVALIER-
PEMBINA-BENSON-RAMSEY-EASTERN WALSH-EDDY-NELSON-GRAND FORKS-
GRIGGS-STEELE-TRAILL-BARNES-CASS-RANSOM-SARGENT-RICHLAND-
WESTERN WALSH-
649 AM CDT SAT JUN 30 2012

THIS HAZARDOUS WEATHER OUTLOOK IS FOR PORTIONS OF EASTERN NORTH
DAKOTA...WEST CENTRAL AND NORTHWEST MINNESOTA.

.DAY ONE...TODAY AND TONIGHT

THERE IS A SLIGHT CHANCE FOR SEVERE THUNDERSTORMS THIS AFTERNOON
AND EVENING...MAINLY ACROSS THE SHEYENNE AND SOUTHERN RED RIVER
VALLEYS. LARGE HAIL AND DAMAGING WINDS WILL BE THE PRIMARY THREAT
DURING THE AFTERNOON AND EARLY EVENING HOURS. SHOWERS AND
THUNDERSTORMS WILL MOVE ACROSS THE AREA THIS MORNING...AND THERE
SHOULD BE SOME CLEARING DURING THE AFTERNOON HOURS. WITH SUNSHINE
EXPECTED TO MAKE THE ATMOSPHERE UNSTABLE...ALONG WITH VERY WEAK
LOW PRESSURE MOVING INTO THE AREA...STORMS COULD REDEVELOP LATER
IN THE DAY.

.DAYS TWO THROUGH SEVEN...SUNDAY THROUGH FRIDAY

A SYSTEM MOVING THROUGH THE NORTHERN PLAINS ON MONDAY WILL AGAIN
BRING ANOTHER CHANCE FOR SEVERE WEATHER DURING THE AFTERNOON AND EVENING
HOURS ACROSS PORTIONS OF EASTERN NORTH DAKOTA...WEST CENTRAL
MINNESOTA...AND NORTHWESTERN MINNESOTA. EXACT TIMING AND PLACEMENT
OF THE BEST SEVERE WEATHER CHANCES IS STILL SOMEWHAT
UNCERTAIN...BUT LARGE HAIL AND DAMAGING WINDS ARE POSSIBLE.

.SPOTTER INFORMATION STATEMENT...

SPOTTER ACTIVATION MAY BE REQUIRED THIS AFTERNOON AND EVENING.

JR

In the hours before

Special weather statement, Jun 30, 8:24 PM CDT, 0 minutes before
SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE EASTERN ND/GRAND FORKS ND
824 PM CDT SAT JUN 30 2012

NDZ038-010230-
BARNES ND-
824 PM CDT SAT JUN 30 2012

...SIGNIFICANT WEATHER ADVISORY FOR CENTRAL BARNES COUNTY UNTIL 930
PM CDT...

AT 823 PM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR WAS TRACKING A
THUNDERSTORM 16 MILES NORTHWEST OF VALLEY CITY...MOVING TO THE EAST
AT 35 MPH.

HAIL UP TO THE SIZE OF NICKELS AND WIND GUSTS UP TO 40 MPH ARE
EXPECTED WITH THE STORM.

THE STORM WILL BE NEAR...
SANBORN AND ROGERS AROUND 830 PM CDT.
BALD HILL DAM AROUND 835 PM CDT.
VALLEY CITY AROUND 840 PM CDT.
ORISKA AROUND 855 PM CDT.

FOR MOTORISTS ON INTERSTATE 94...THE STORM WILL BE BETWEEN...MILE
MARKER 274 AROUND 825 PM CDT...AND MILE MARKER 303 AROUND 855 PM
CDT...

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

LAT...LON 4707 9773 4675 9770 4690 9842 4713 9845
TIME...MOT...LOC 0124Z 279DEG 43KT 4701 9830

DK

The office that day

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

IssuedProductOfficeCountiesLasted
Jun 30, 11:21 PM CDTSpecial Weather StatementFGFMahnomen54 min
Jul 1, 7:15 AM CDTSpecial Weather StatementFGFBecker60 min
Jul 1, 6:02 PM CDTSpecial Weather StatementFGFBeltrami58 min
Jul 1, 6:43 PM CDTSpecial Weather StatementFGFPolk32 min
Jun 30, 8:52 PM CDTSevere Thunderstorm WarningFGFGriggs40 min
Jun 30, 9:20 PM CDTSevere Thunderstorm WarningFGFGriggs, Steele32 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.