Alert archive / South Dakota / Special Weather Statements in 2016

Special Weather Statement, NWS Aberdeen, SD

July 11, 2016McPherson County, South Dakota

NWS Aberdeen, SD issued this special weather statement at Jul 11, 2016, 6:59 PM CDT for McPherson County, South Dakota. It was in force for 31 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: Jul 11, 2016, 6:59 PM CDT (23:59 UTC)
Expired: Jul 11, 2016, 7:30 PM CDT
In force: 31 min
Issued by: NWS Aberdeen, SD

County McPherson County, SD

The radar

The Aberdeen radar (KABR), 48 km from the middle of the area, began a volume at 00:04 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, 12.0 hours before the alert went out and 97 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: 0 J/kg
Mixed-layer CIN: No buoyant parcel
Mixed-layer LCL: 1008 m above ground
0-6 km bulk shear: 68 kt
0-1 km storm-relative helicity: 256 m²/s²
0-3 km storm-relative helicity: 237 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 Jul 11, 6:51 PM CDT, 8 minutes earlier.

Area forecast discussion, Jul 11, 6:51 PM CDT, 8 minutes before

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Hazardous weather outlook, Jul 11, 2:49 PM CDT, 4 hours 10 minutes before

HAZARDOUS WEATHER OUTLOOK
NATIONAL WEATHER SERVICE ABERDEEN SD
249 PM CDT MON JUL 11 2016

MNZ039-046-SDZ003>011-015>023-033>037-045-048-051-122000-
TRAVERSE-BIG STONE-CORSON-CAMPBELL-MCPHERSON-BROWN-MARSHALL-
ROBERTS-WALWORTH-EDMUNDS-DAY-DEWEY-POTTER-FAULK-SPINK-CLARK-
CODINGTON-GRANT-HAMLIN-DEUEL-STANLEY-SULLY-HUGHES-HYDE-HAND-JONES-
LYMAN-BUFFALO-
249 PM CDT MON JUL 11 2016 /149 PM MDT MON JUL 11 2016/

THIS HAZARDOUS WEATHER OUTLOOK IS FOR PORTIONS OF WEST CENTRAL
MINNESOTA...CENTRAL SOUTH DAKOTA...NORTH CENTRAL SOUTH DAKOTA AND
NORTHEAST SOUTH DAKOTA.

.DAY ONE...THIS AFTERNOON AND TONIGHT

THE SEVERE THUNDERSTORM POTENTIAL TODAY WILL EXIST MAINLY EAST OF
THE JAMES RIVER THIS AFTERNOON AND EARLY THIS EVENING. HEAVY
RAIN...LARGE HAIL...AND STRONG WINDS ARE THE MAIN THREATS.

THE GRASSLAND FIRE DANGER WILL REACH THE VERY HIGH TO EXTREME
CATEGORY TODAY ACROSS CENTRAL AND SOUTH CENTRAL SOUTH DAKOTA DUE
TO LOW HUMIDITY AROUND 20 PERCENT OR BELOW AND GUSTY WESTERLY
WINDS.

.DAYS TWO THROUGH SEVEN...TUESDAY THROUGH SUNDAY

THE GRASSLAND FIRE DANGER IS EXPECTED TO REACH VERY HIGH LEVELS
ACROSS CENTRAL SOUTH DAKOTA ON TUESDAY...DUE TO LOW HUMIDITY AND
GUSTY WEST WINDS.

.SPOTTER INFORMATION STATEMENT...

SPOTTER ACTIVATION MAY BE NECESSARY THIS AFTERNOON..MAINLY EAST
OF THE JAMES RIVER.

KF

In the hours before

Local storm report, Jul 11, 6:01 PM CDT, 58 minutes before

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Special weather statement, Jul 11, 6:05 PM CDT, 54 minutes before

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Special weather statement, Jul 11, 6:12 PM CDT, 47 minutes before

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Local storm report, Jul 11, 6:17 PM CDT, 42 minutes before

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Special weather statement, Jul 11, 6:37 PM CDT, 22 minutes before

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Special weather statement, Jul 11, 6:59 PM CDT, 0 minutes before

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The office that day

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

Issued	Product	Office	Counties	Lasted
Jul 10, 7:36 PM CDT	Severe Thunderstorm Warning	ABR	Corson	54 min
Jul 10, 8:31 PM CDT	Severe Thunderstorm Warning	ABR	Corson, Dewey	37 min
Jul 10, 9:35 PM CDT	Special Weather Statement	ABR	Corson	55 min
Jul 10, 9:42 PM CDT	Severe Thunderstorm Warning	ABR	Campbell, Corson	48 min
Jul 10, 10:31 PM CDT	Special Weather Statement	ABR	Campbell, Walworth	59 min
Jul 10, 10:38 PM CDT	Severe Thunderstorm Warning	ABR	Campbell, Corson, Dewey, Edmunds, McPherson, Walworth	67 min
Jul 10, 11:47 PM CDT	Special Weather Statement	ABR	Campbell	58 min
Jul 11, 12:16 AM CDT	Special Weather Statement	ABR	Brown, Marshall	59 min
Jul 11, 2:06 AM CDT	Special Weather Statement	ABR	Roberts	24 min
Jul 11, 4:00 AM CDT	Red Flag Warning	ABR		16 hr
Jul 11, 6:42 AM CDT	Areal Flood Warning	ABR	Grant, Roberts	6 hr
Jul 11, 9:09 AM CDT	Areal Flood Warning	ABR	Day, Grant, Roberts	9 hr
Jul 11, 12:32 PM CDT	Special Weather Statement	ABR	Roberts	43 min
Jul 11, 1:26 PM CDT	Special Weather Statement	ABR	Campbell, Walworth	49 min
Jul 11, 1:54 PM CDT	Special Weather Statement	ABR	McPherson	51 min
Jul 11, 3:32 PM CDT	Special Weather Statement	ABR	Corson	43 min
Jul 11, 4:17 PM CDT	Special Weather Statement	ABR	Corson	43 min
Jul 11, 4:58 PM CDT	Special Weather Statement	ABR	Corson	47 min
Jul 11, 5:25 PM CDT	Severe Thunderstorm Warning	ABR	Campbell, Corson, Dewey, Walworth	50 min
Jul 11, 6:05 PM CDT	Special Weather Statement	ABR	McPherson	25 min
Jul 11, 6:12 PM CDT	Special Weather Statement	ABR	McPherson	33 min
Jul 11, 6:37 PM CDT	Special Weather Statement	ABR	McPherson	23 min

Nearby

Special Weather Statements in South Dakota, 2016 Every special weather statement in 2016

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.