Alert archive / Minnesota / Special Weather Statements in 2018

Special Weather Statement, NWS Aberdeen, SD

August 3, 2018Big Stone County, Minnesota

NWS Aberdeen, SD issued this special weather statement at Aug 3, 2018, 4:16 PM CDT for Big Stone County, Minnesota. It was in force for 44 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
Aug 3, 2018, 4:16 PM CDT (21:16 UTC)
Expired
Aug 3, 2018, 5:00 PM CDT
In force
44 min
Issued by
NWS Aberdeen, SD

County Big Stone County, MN

The radar

The Aberdeen radar (KABR), 163 km from the middle of the area, began a volume at 21:16 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 12:00Z, 9.3 hours before the alert went out and 169 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 12:00Z on 2018-08-03Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 1530 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, Aberdeen, SD at 12:00Z on 2018-08-03The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 157 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
1530 J/kg
Mixed-layer CIN
-435 J/kg
Mixed-layer LCL
1675 m above ground
0-6 km bulk shear
27 kt
0-1 km storm-relative helicity
157 m²/s²
0-3 km storm-relative helicity
135 m²/s²
Significant tornado parameter
0.0
Supercell composite
-0.4

Open this sounding in Storm Lab

The text

As transmitted.

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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 Aberdeen, SD wrote its last area forecast discussion before this special weather statement went out at Aug 3, 3:22 PM CDT, 54 minutes earlier.

Area forecast discussion, Aug 3, 3:22 PM CDT, 54 minutes before
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Hazardous weather outlook, Aug 3, 3:25 PM CDT, 51 minutes before
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In the hours before

Special weather statement, Aug 3, 1:18 PM CDT, 2 hours 58 minutes before
Special Weather Statement
National Weather Service Aberdeen SD
118 PM CDT FRI AUG 3 2018

SDZ020-022-031900-
Hamlin SD-Codington SD-
118 PM CDT FRI AUG 3 2018

...SIGNIFICANT WEATHER ADVISORY FOR NORTH CENTRAL HAMLIN AND SOUTHERN
CODINGTON COUNTIES UNTIL 200 PM CDT...

At 117 PM CDT, Doppler radar was tracking strong thunderstorms along
a line extending from Tinkertown to Sandy Shore Rec Area to near
Thomas. Movement was northeast at 20 mph.

Dime size hail and winds in excess of 40 mph will be possible with
these storms.

Locations impacted include...
Watertown, Rauville, Kranzburg, Watertown City Park, Pelican Lake,
Sandy Shore Rec Area, Lake Kampeska, Memorial Park Camping Site and
Goose Lake.

LAT...LON 4476 9711 4484 9723 4489 9739 4498 9718
      4498 9697 4489 9688 4488 9689 4487 9688
      4484 9688
TIME...MOT...LOC 1817Z 241DEG 15KT 4489 9735 4489 9721 4479 9711

Serr
Local storm report, Aug 3, 1:57 PM CDT, 2 hours 19 minutes before
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Local storm report, Aug 3, 2:05 PM CDT, 2 hours 11 minutes before
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Local storm report, Aug 3, 2:09 PM CDT, 2 hours 7 minutes before
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Local storm report, Aug 3, 2:33 PM CDT, 1 hour 43 minutes before
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Special weather statement, Aug 3, 4:16 PM CDT, 0 minutes before
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The office that day

Everything else NWS Aberdeen, SD issued on the same UTC day.

IssuedProductOfficeCountiesLasted
Aug 2, 8:30 PM CDTSpecial Weather StatementABRJones30 min
Aug 3, 12:49 PM CDTSpecial Weather StatementABRCodington41 min
Aug 3, 1:18 PM CDTSpecial Weather StatementABRCodington42 min
Aug 3, 1:29 PM CDTSevere Thunderstorm WarningABRCodington, Deuel, Grant46 min
Aug 3, 4:12 PM CDTSevere Thunderstorm WarningABRCodington, Deuel, Grant37 min
Aug 3, 4:25 PM CDTSpecial Weather StatementABRGrant35 min

Nearby

Special Weather Statements in Minnesota, 2018Every special weather statement in 2018

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.