Alert archive / South Dakota / Severe Thunderstorm Warnings in 2009
Severe Thunderstorm Warning 67, NWS Aberdeen, SD
NWS Aberdeen, SD issued this severe thunderstorm warning at Jul 7, 2009, 11:53 AM CDT for Edmunds County, Faulk County, South Dakota. It was in force for 42 min. No storm report in the archive falls inside the area while it was in force.
The area
The counties it named.
The facts
- Issued
- Jul 7, 2009, 11:53 AM CDT (16:53 UTC)
- Expired
- Jul 7, 2009, 12:35 PM CDT
- In force
- 42 min
- Issued by
- NWS Aberdeen, SD
- Area
- Storm-based polygon
Counties Edmunds County, SD, Faulk County, SD
The radar
The Aberdeen radar (KABR), 64 km from the middle of the area, began a volume at 16:53 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, 4.9 hours before the alert went out and 72 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
- 224 J/kg
- Mixed-layer CIN
- -184 J/kg
- Mixed-layer LCL
- 1260 m above ground
- 0-6 km bulk shear
- 20 kt
- 0-1 km storm-relative helicity
- 60 m²/s²
- 0-3 km storm-relative helicity
- 130 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.7
What forecasters said that day
The local office's own words before this severe thunderstorm warning 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 severe thunderstorm warning went out at Jul 7, 3:50 AM CDT, 8 hours 3 minutes earlier.
Area forecast discussion, Jul 7, 3:50 AM CDT, 8 hours 3 minutes before
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</html>Hazardous weather outlook, Jul 7, 3:31 AM CDT, 8 hours 22 minutes before
HAZARDOUS WEATHER OUTLOOK NATIONAL WEATHER SERVICE ABERDEEN SD 331 AM CDT TUE JUL 7 2009 MNZ039-046-SDZ003>011-015>023-033>037-045-048-051-080845- 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- 331 AM CDT TUE JUL 7 2009 /231 AM MDT TUE JUL 7 2009/ THIS HAZARDOUS WEATHER OUTLOOK IS FOR PORTIONS OF WEST CENTRAL MINNESOTA...CENTRAL SOUTH DAKOTA...NORTH CENTRAL SOUTH DAKOTA AND NORTHEAST SOUTH DAKOTA. .DAY ONE...TONIGHT A FRONT SITUATED ACROSS THE REGION...ALONG WITH BOUNDARIES FROM MORNING CONVECTION...WILL PROVIDE THE FOCUS FOR AFTERNOON THUNDERSTORM DEVELOPMENT. THE ENVIRONMENT THESE STORMS WILL FORM UNDER IS SUPPORTIVE FOR SUPERCELL DEVELOPMENT WITH THE MAIN RISK BEING FOR HAIL AND HIGH WINDS...AND POSSIBLY AN ISOLATED TORNADO. .DAYS TWO THROUGH SEVEN...TUESDAY THROUGH SUNDAY THUNDERSTORM ACTIVITY IS POSSIBLE AGAIN WEDNESDAY NIGHT...WITH MODELS INDICATING A FAST MOVING THUNDERSTORM COMPLEX EFFECTING THE NORTHERN TIER OF THE STATE. THE MAIN THREAT FROM THIS COMPLEX IS FOR HIGH WINDS. .SPOTTER INFORMATION STATEMENT... SPOTTER ACTIVATION MAY BE NEEDED THIS AFTERNOON AND EVENING. CONNELLY
In the hours before
Local storm report, Jul 7, 6:24 AM CDT, 5 hours 29 minutes before
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</html>Special weather statement, Jul 7, 9:32 AM CDT, 2 hours 21 minutes before
SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE ABERDEEN SD 932 AM CDT TUE JUL 7 2009 SDZ003>005-009-015-071600- CAMPBELL-CORSON-DEWEY-MCPHERSON-WALWORTH- 932 AM CDT TUE JUL 7 2009 ...A SIGNIFICANT WEATHER ADVISORY HAS BEEN ISSUED FOR CAMPBELL... EASTERN CORSON...NORTHEASTERN DEWEY...NORTHWESTERN MCPHERSON AND NORTHWESTERN WALWORTH COUNTIES UNTIL 1100 AM CDT/1000 AM MDT/... AT 828 AM MDT...SATELLITE IMAGERY AND NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED THAT THUNDERSTORMS WERE RAPIDLY DEVELOPING NEAR INDIAN MEMORIAL REC AREA...OR NEAR MOBRIDGE...MOVING NORTHEAST AT 30 MPH. A FEW LOCATIONS IN THE ADVISORY INCLUDE GLENHAM...KENEL...POLLOCK... MOUND CITY...HERREID...ARTAS...EUREKA...GREENWAY AND LONG LAKE. A CLUSTER OF STRONG THUNDERSTORMS WERE ALSO NOTED ON RADAR DEVELOPING NEAR ARTAS...MOVING NORTHEAST AT 30 MPH. PENNY TO NICKEL SIZE HAIL...AND WINDS AROUND 40 TO 50 MPH ARE EXPECTED WITH THESE STORMS. PRECAUTIONARY/PREPAREDNESS ACTIONS... FREQUENT LIGHTNING ACCOMPANIES THESE STORMS. MOVE INDOORS IMMEDIATELY. && DORN
Local storm report, Jul 7, 9:55 AM CDT, 1 hour 58 minutes before
PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE ABERDEEN SD
955 AM CDT TUE JUL 07 2009
..TIME... ...EVENT... ...CITY LOCATION... ...LAT.LON...
..DATE... ....MAG.... ..COUNTY LOCATION..ST.. ...SOURCE....
..REMARKS..
0952 AM HAIL 8 N GLENHAM 45.65N 100.27W
07/07/2009 E0.88 INCH CAMPBELL SD TRAINED SPOTTER
&&
WFOABRLocal storm report, Jul 7, 10:16 AM CDT, 1 hour 37 minutes before
PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE ABERDEEN SD
1016 AM CDT TUE JUL 07 2009
..TIME... ...EVENT... ...CITY LOCATION... ...LAT.LON...
..DATE... ....MAG.... ..COUNTY LOCATION..ST.. ...SOURCE....
..REMARKS..
0953 AM HAIL 9 N GLENHAM 45.66N 100.27W
07/07/2009 E1.00 INCH CAMPBELL SD PUBLIC
&&
WFOABRThe office that day
Everything else NWS Aberdeen, SD issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jul 6, 7:20 PM CDT | Severe Thunderstorm Warning | ABR | Faulk | 55 min |
| Jul 6, 7:39 PM CDT | Severe Thunderstorm Warning | ABR | Faulk | 51 min |
| Jul 7, 9:42 AM CDT | Severe Thunderstorm Warning | ABR | Campbell, Corson, Walworth | 43 min |
| Jul 7, 2:41 PM CDT | Tornado Warning | ABR | Codington, Day, Grant | 49 min |
| Jul 7, 2:52 PM CDT | Severe Thunderstorm Warning | ABR | Clark, Codington, Grant, Hamlin | 68 min |
| Jul 7, 2:57 PM CDT | Tornado Warning | ABR | Clark, Hamlin | 63 min |
| Jul 7, 3:27 PM CDT | Severe Thunderstorm Warning | ABR | Clark, Codington, Deuel, Grant, Hamlin | 48 min |
Nearby
Severe Thunderstorm Warnings in South Dakota, 2009Every severe thunderstorm warning in 2009
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.