Alert archive / South Dakota / Special Weather Statements in 2017
Special Weather Statement, NWS Aberdeen, SD
NWS Aberdeen, SD issued this special weather statement at Aug 9, 2017, 6:43 PM CDT for Grant County, South Dakota. It was in force for 47 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 9, 2017, 6:43 PM CDT (23:43 UTC)
- Expired
- Aug 9, 2017, 7:30 PM CDT
- In force
- 47 min
- Issued by
- NWS Aberdeen, SD
County Grant County, SD
The radar
The Aberdeen radar (KABR), 147 km from the middle of the area, began a volume at 23:44 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, 11.7 hours before the alert went out and 151 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.
- Mixed-layer CAPE
- 352 J/kg
- Mixed-layer CIN
- -92 J/kg
- Mixed-layer LCL
- 856 m above ground
- 0-6 km bulk shear
- 30 kt
- 0-1 km storm-relative helicity
- 62 m²/s²
- 0-3 km storm-relative helicity
- 74 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.4
The text
As transmitted.
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</html>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 9, 6:29 PM CDT, 14 minutes earlier.
Area forecast discussion, Aug 9, 6:29 PM CDT, 14 minutes before
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</html>Hazardous weather outlook, Aug 9, 3:20 AM CDT, 15 hours 23 minutes before
Hazardous Weather Outlook National Weather Service Aberdeen SD 320 AM CDT Wed Aug 9 2017 MNZ039-046-SDZ003>011-015>023-033>037-045-048-051-101200- 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- 320 AM CDT Wed Aug 9 2017 /220 AM MDT Wed Aug 9 2017/ This Hazardous Weather Outlook is for portions of west central Minnesota, central South Dakota, north central South Dakota, and northeast South Dakota. .DAY ONE...Today and Tonight Isolated thunderstorms are possible this morning east of the Missouri river. Lightning will be the primary threat with any thunderstorms. Strong to severe thunderstorms are possible from mid afternoon through early evening, mainly east of a line from McIntosh and Mobridge to Miller. The strongest storms may produce hail around one inch in diameter and wind gusts to 60 mph. .DAYS TWO THROUGH SEVEN...Thursday through Tuesday Thunderstorms are possible Friday night into Saturday night. An isolated severe storm may occur during that period. .SPOTTER INFORMATION STATEMENT... Spotter activation may be needed over northeast South Dakota and west central Minnesota this afternoon and evening. SRF
In the hours before
Special weather statement, Aug 9, 5:36 PM CDT, 1 hour 7 minutes before
Special Weather Statement National Weather Service Aberdeen SD 536 PM CDT WED AUG 9 2017 SDZ007-008-011-092300- Marshall SD-Day SD-Roberts SD- 536 PM CDT WED AUG 9 2017 ...SIGNIFICANT WEATHER ADVISORY FOR WEST CENTRAL ROBERTS... NORTHEASTERN DAY AND SOUTHEASTERN MARSHALL COUNTIES UNTIL 600 PM CDT... At 535 PM CDT, Doppler radar was tracking a strong thunderstorm over Roslyn, or 14 miles north of Webster, moving east at 35 mph. Nickel size hail and winds in excess of 40 mph will be possible with this storm. Locations impacted include... Roslyn, Eden, Grenville, Enemy Swim Housing, Buffalo Lakes, Cattail Lake, Rudebusch Corner, Piyas Lake, Enemy Swim Lake, Pickerel Lake Rec Area, Opitz Lake, Campbell Slough and Waubay Lake. PRECAUTIONARY/PREPAREDNESS ACTIONS... This storm may intensify, so be certain to monitor local radio stations and available television stations for additional information and possible warnings from the National Weather Service. To report severe weather, contact your nearest law enforcement agency. They will relay your report to the National Weather Service office in Aberdeen. && LAT...LON 4548 9763 4565 9761 4564 9709 4540 9714 TIME...MOT...LOC 2235Z 272DEG 32KT 4554 9748 TMT
Local storm report, Aug 9, 5:51 PM CDT, 52 minutes before
PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE ABERDEEN SD
551 PM CDT WED AUG 9 2017
..TIME... ...EVENT... ...CITY LOCATION... ...LAT.LON...
..DATE... ....MAG.... ..COUNTY LOCATION..ST.. ...SOURCE....
..REMARKS..
0547 PM HAIL ROSLYN 45.50N 97.49W
08/09/2017 M1.00 INCH DAY SD LAW ENFORCEMENT
MOSTLY DIME SIZED HAIL WITH A FEW UP TO
QUARTER SIZE.
&&
RLSpecial weather statement, Aug 9, 6:00 PM CDT, 43 minutes before
Special Weather Statement
National Weather Service Aberdeen SD
600 PM CDT WED AUG 9 2017
SDZ007-008-011-092345-
Marshall SD-Day SD-Roberts SD-
600 PM CDT WED AUG 9 2017
...SIGNIFICANT WEATHER ADVISORY FOR SOUTHWESTERN ROBERTS...
NORTHEASTERN DAY AND SOUTHEASTERN MARSHALL COUNTIES UNTIL 645 PM
CDT...
At 559 PM CDT, Doppler radar was tracking a strong thunderstorm over
Enemy Swim Housing, or 13 miles northeast of Webster, moving east at
30 mph.
Nickel size hail and winds in excess of 30 mph will be possible with
this storm.
Locations impacted include...
Wilmot, Peever, Grenville, Peever Flats Housing, Agency Village,
Finley Heights Housing, Enemy Swim Housing, Waubay Lake, Rudebusch
Corner, Waubay Wildlife Rec Area, Enemy Swim Lake, Campbell Slough,
Pickerel Lake Rec Area and Piyas Lake.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
This storm may intensify, so be certain to monitor local radio
stations and available television stations for additional information
and possible warnings from the National Weather Service.
To report severe weather, contact your nearest law enforcement
agency. They will relay your report to the National Weather Service
office in Aberdeen.
&&
LAT...LON 4555 9680 4554 9679 4533 9687 4541 9742
4558 9737
TIME...MOT...LOC 2259Z 274DEG 28KT 4546 9730
TMTSpecial weather statement, Aug 9, 6:23 PM CDT, 20 minutes before
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</html>Local storm report, Aug 9, 6:42 PM CDT, 1 minute before
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</html>Special weather statement, Aug 9, 6:43 PM CDT, 0 minutes before
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</html>The office that day
Everything else NWS Aberdeen, SD issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Aug 9, 5:36 PM CDT | Special Weather Statement | ABR | Day | 24 min |
| Aug 9, 6:00 PM CDT | Special Weather Statement | ABR | Roberts | 45 min |
| Aug 9, 6:06 PM CDT | Severe Thunderstorm Warning | ABR | Day, Grant, Roberts | 19 min |
| Aug 9, 6:23 PM CDT | Special Weather Statement | ABR | Codington | 52 min |
| Aug 9, 6:28 PM CDT | Severe Thunderstorm Warning | ABR | Codington, Deuel, Grant | 47 min |
| Aug 9, 6:56 PM CDT | Special Weather Statement | ABR | Deuel | 64 min |
Nearby
Special Weather Statements in South Dakota, 2017Every special weather statement in 2017
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.