Alert archive / South Dakota / Severe Thunderstorm Warnings in 2010
Severe Thunderstorm Warning 278, NWS Sioux Falls, SD
NWS Sioux Falls, SD issued this severe thunderstorm warning at Sep 15, 2010, 3:06 PM CDT for Bon Homme County, Yankton County, South Dakota. It was in force for 24 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
- Sep 15, 2010, 3:06 PM CDT (20:06 UTC)
- Expired
- Sep 15, 2010, 3:30 PM CDT
- In force
- 24 min
- Issued by
- NWS Sioux Falls, SD
- Area
- Storm-based polygon
- Hail
- 1.0 in
- Wind
- 70.0 mph
Counties Bon Homme County, SD, Yankton County, SD
The radar
The Sioux Falls radar (KFSD), 99 km from the middle of the area, began a volume at 20:06 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 watch it was issued in
The SPC watch in force over the same counties when this warning went out.
| Issued | Product | Office | Lasted |
|---|---|---|---|
| Sep 15, 2:19 PM CDT | Tornado Watch | SPC | 6 hr |
The nearest sounding before it
Omaha, NE (KOAX), launched 12:00Z, 8.1 hours before the alert went out and 214 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
- 119 J/kg
- Mixed-layer CIN
- -177 J/kg
- Mixed-layer LCL
- 1434 m above ground
- 0-6 km bulk shear
- 35 kt
- 0-1 km storm-relative helicity
- -177 m²/s²
- 0-3 km storm-relative helicity
- -266 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
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 Sioux Falls, SD wrote its last area forecast discussion before this severe thunderstorm warning went out at Sep 15, 1:58 PM CDT, 1 hour 8 minutes earlier.
Area forecast discussion, Sep 15, 1:58 PM CDT, 1 hour 8 minutes before
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HAZARDOUS WEATHER OUTLOOK NATIONAL WEATHER SERVICE SIOUX FALLS SD 1153 AM CDT WED SEP 15 2010 SDZ038>040-050-052>071-MNZ071-072-080-081-089-090-097-098- IAZ001>003-012>014-020>022-031-032-NEZ013-014-161200- AURORA-BEADLE-BON HOMME-BROOKINGS-BRULE-BUENA VISTA IA- CHARLES MIX-CHEROKEE IA-CLAY-CLAY IA-COTTONWOOD MN-DAKOTA NE- DAVISON-DICKINSON IA-DIXON NE-DOUGLAS-GREGORY-HANSON-HUTCHINSON- IDA IA-JACKSON MN-JERAULD-KINGSBURY-LAKE-LINCOLN-LINCOLN MN- LYON IA-LYON MN-MCCOOK-MINER-MINNEHAHA-MOODY-MURRAY MN-NOBLES MN- OBRIEN IA-OSCEOLA IA-PIPESTONE MN-PLYMOUTH IA-ROCK MN-SANBORN- SIOUX IA-TURNER-UNION-WOODBURY IA-YANKTON- 1153 AM CDT WED SEP 15 2010 THIS HAZARDOUS WEATHER OUTLOOK IS FOR SOUTHEAST SOUTH DAKOTA... SOUTHWEST MINNESOTA...NORTHWEST IOWA...AND NORTHEAST NEBRASKA. .DAY ONE...TODAY AND TONIGHT THUNDERSTORMS... AFTER A FAIRLY QUIET PERIOD LATE MORNING...SCATTERED THUNDERSTORMS ARE EXPECTED TO REDEVELOP MIDDAY INTO EARLY AFTERNOON IN THE JAMES VALLEY. THESE STORMS WILL BUILD EASTWARD THROUGH THE AFTERNOON...GAINING STRENGTH HEADING TOWARD THE INTERSTATE 29 CORRIDOR BY MID TO LATE AFTERNOON. THE BEST FOCUS FOR STORMS LOOKS TO OCCUR FOR AREAS MAINLY ALONG AND NORTH OF INTERSTATE 90 IN SOUTH DAKOTA...THEN SOUTHEAST THROUGH THE SPENCER AREA OF NORTHWEST IOWA. WHILE THE PRIMARY THREAT FROM STORMS WILL BE HAIL UP TO HALF DOLLAR SIZE AND WINDS TO 65 MPH...A SMALL THREAT FOR TORNADIC STORMS SHOULD EXIST FROM PARTS OF EAST CENTRAL SOUTH DAKOTA EARLY TO MID AFTERNOON...THEN SOUTHEAST TOWARD THE IOWA GREAT LAKES AND SPENCER AREAS BY VERY LATE AFTERNOON AND EARLY EVENING. FLOODING... LOWLAND FLOODING WILL CONTINUE ALONG PORTIONS OF THE MISSOURI RIVER BETWEEN FORT RANDALL DAM AND LEWIS AND CLARK LAKE FOR THE NEXT FEW WEEKS. MINOR FLOODING WILL CONTINUE ALONG THE JAMES RIVER AROUND HURON FOR AROUND A WEEK...AND PERHAPS AS LONG AS TWO WEEKS FOR AREAS NEAR FORESTBURG AND MITCHELL. .DAYS TWO THROUGH SEVEN...THURSDAY THROUGH TUESDAY SHOWERS AND THUNDERSTORMS ARE EXPECTED FROM SUNDAY NIGHT THROUGH MONDAY NIGHT ACROSS THE AREA. AREAS OF HEAVY RAINFALL WILL BE POSSIBLE...AND IT APPEARS THERE COULD BE A SLIGHTLY BETTER THREAT FOR THIS HEAVY RAIN TO OCCUR IN AREAS NORTH OF INTERSTATE 90 AT THIS TIME. .SPOTTER INFORMATION STATEMENT... SPOTTER ACTIVATION WILL BE POSSIBLE AFTER 2 PM IN EAST CENTRAL SOUTH DAKOTA...AND AFTER 4 PM ALONG AND EAST OF A LINE FROM BROOKINGS TO SIOUX CITY. && FOR MORE INFORMATION PLEASE VISIT OUR WEBSITE AT WWW.WEATHER.GOV/SIOUXFALLS. THIS INCLUDES THE GRAPHICAL HAZARDOUS WEATHER OUTLOOK.
In the hours before
Local storm report, Sep 15, 10:23 AM CDT, 4 hours 43 minutes before
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</html>Local storm report, Sep 15, 11:49 AM CDT, 3 hours 17 minutes before
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</html>Local storm report, Sep 15, 12:12 PM CDT, 2 hours 54 minutes before
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</html>Local storm report, Sep 15, 1:58 PM CDT, 1 hour 8 minutes before
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</html>Local storm report, Sep 15, 2:11 PM CDT, 55 minutes before
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</html>Local storm report, Sep 15, 2:23 PM CDT, 43 minutes before
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</html>The office that day
Everything else NWS Sioux Falls, SD issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Sep 14, 10:45 PM CDT | Severe Thunderstorm Warning | FSD | Beadle | 19 min |
| Sep 14, 11:19 PM CDT | Severe Thunderstorm Warning | FSD | Brule | 26 min |
| Sep 14, 11:41 PM CDT | Severe Thunderstorm Warning | FSD | Beadle, Kingsbury, Miner, Sanborn | 34 min |
| Sep 14, 11:42 PM CDT | Severe Thunderstorm Warning | FSD | Brule | 19 min |
| Sep 15, 12:12 AM CDT | Severe Thunderstorm Warning | FSD | Miner | 33 min |
| Sep 15, 12:22 AM CDT | Severe Thunderstorm Warning | FSD | Moody | 13 min |
| Sep 15, 12:34 AM CDT | Severe Thunderstorm Warning | FSD | Aurora, Jerauld, Sanborn | 26 min |
| Sep 15, 12:40 AM CDT | Severe Thunderstorm Warning | FSD | Lake, Miner | 35 min |
| Sep 15, 1:56 AM CDT | Severe Thunderstorm Warning | FSD | Minnehaha | 34 min |
| Sep 15, 9:59 AM CDT | River Flood Warning | FSD | Beadle | 9 days |
| Sep 15, 9:59 AM CDT | River Flood Warning | FSD | Sanborn | 13 days |
| Sep 15, 9:59 AM CDT | River Flood Warning | FSD | Davison, Hanson | 18 days |
| Sep 15, 3:28 PM CDT | Severe Thunderstorm Warning | FSD | Bon Homme, Yankton | 32 min |
| Sep 15, 3:38 PM CDT | Severe Thunderstorm Warning | FSD | Lake, Miner | 37 min |
| Sep 15, 4:00 PM CDT | Severe Thunderstorm Warning | FSD | Clay, Yankton | 45 min |
| Sep 15, 5:17 PM CDT | Severe Thunderstorm Warning | FSD | Union | 28 min |
| Sep 15, 5:39 PM CDT | Severe Thunderstorm Warning | FSD | Cherokee, Plymouth, Woodbury | 51 min |
| Sep 15, 6:21 PM CDT | Severe Thunderstorm Warning | FSD | Buena Vista, Cherokee, Ida | 54 min |
| Sep 15, 2:43 AM CDT | Severe Thunderstorm Warning | FSD | Nobles | 32 min |
Nearby
Severe Thunderstorm Warnings in South Dakota, 2010Every severe thunderstorm warning in 2010
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.