Alert archive / North Dakota / Special Weather Statements in 2012

Special Weather Statement, NWS Grand Forks, ND

June 9, 2012Walsh County, North Dakota

NWS Grand Forks, ND issued this special weather statement at Jun 9, 2012, 10:07 AM CDT for Walsh County, North Dakota. It was in force for 38 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 9, 2012, 10:07 AM CDT (15:07 UTC)
Expired
Jun 9, 2012, 10:45 AM CDT
In force
38 min
Issued by
NWS Grand Forks, ND

County Walsh County, ND

The radar

The Fargo/Grand Forks radar (KMVX), 128 km from the middle of the area, began a volume at 15:07 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 12:00Z, 3.1 hours before the alert went out and 294 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 12:00Z on 2012-06-09Temperature 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°0°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Bismarck Municip, ND at 12:00Z on 2012-06-09The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 175 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
-414 J/kg
Mixed-layer LCL
1659 m above ground
0-6 km bulk shear
44 kt
0-1 km storm-relative helicity
175 m²/s²
0-3 km storm-relative helicity
198 m²/s²
Significant tornado parameter
0.0
Supercell composite
-2.9

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 9, 9:50 AM CDT, 17 minutes earlier.

Area forecast discussion, Jun 9, 9:50 AM CDT, 17 minutes before
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Hazardous weather outlook, Jun 9, 5:53 AM CDT, 4 hours 14 minutes before
HAZARDOUS WEATHER OUTLOOK
NATIONAL WEATHER SERVICE GRAND FORKS ND
553 AM CDT SAT JUN 9 2012

MNZ001>009-013>017-022>024-027>032-040-NDZ006>008-014>016-024-
026>030-038-039-049-052>054-101200-
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-
553 AM CDT SAT JUN 9 2012

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

.DAY ONE...TODAY AND TONIGHT

A STRONG THUNDERSTORM COMPLEX MAY AFFECT THE CANDO AND LANGDON
AREA DURING THE MORNING HOURS. LARGE HAIL AND STRONG WIND GUSTS
WILL BE THE MAIN THREAT.

MUCH OF SATURDAY WILL BE HOT BUT REMAIN DRY. THUNDERSTORM CHANCES
WILL INCREASE FROM WEST TO EAST THIS EVENING INTO THE OVERNIGHT
HOURS. THE MOST PROBABLE LOCATION FOR ACTIVITY WILL BE ACROSS THE
NORTHERN RED RIVER VALLEY INTO EASTERN NORTH DAKOTA. THERE IS A
SLIGHT RISK FOR SEVERE STORMS ACROSS THIS AREA...WITH LARGE
HAIL...STRONG WINDS...HEAVY RAIN...AND A TORNADO POSSIBLE.

.DAYS TWO THROUGH SEVEN...SUNDAY THROUGH FRIDAY

STRONG TO SEVERE THUNDERSTORMS MAY BE ONGOING SUNDAY MORNING NEAR
THE RED RIVER VALLEY. THERE IS A SLIGHT RISK FOR SEVERE
THUNDERSTORMS THROUGH THE DAY ON SUNDAY...AHEAD OF A COLD FRONT
ALONG AND EAST OF THE RED RIVER VALLEY. LARGE HAIL...STRONG
WINDS...HEAVY RAIN...AND A TORNADO OR TWO WILL BE POSSIBLE.

.SPOTTER INFORMATION STATEMENT...

SPOTTER ACTIVATION MAY BE REQUIRED THIS EVENING INTO SUNDAY
AFTERNOON.

TG

In the hours before

Special weather statement, Jun 9, 7:48 AM CDT, 2 hours 19 minutes before
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Local storm report, Jun 9, 9:30 AM CDT, 37 minutes before
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Special weather statement, Jun 9, 10:07 AM CDT, 0 minutes before
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The office that day

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

IssuedProductOfficeCountiesLasted
Jun 9, 7:48 AM CDTSpecial Weather StatementFGFTowner57 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.