Alert archive / Iowa / Tornado Warnings in 2010
Tornado Warning 8, NWS Sioux Falls, SD
NWS Sioux Falls, SD issued this tornado warning at Jun 1, 2010, 1:28 PM CDT for Clay County, O'Brien County, Iowa. It was in force for 32 min. 4 reports came from inside the area while it was in force.
The area
The outline as issued, with what was reported inside it.
The facts
- Issued
- Jun 1, 2010, 1:28 PM CDT (18:28 UTC)
- Expired
- Jun 1, 2010, 2:00 PM CDT
- In force
- 32 min
- Issued by
- NWS Sioux Falls, SD
- Area
- Storm-based polygon
Counties Clay County, IA, O'Brien County, IA
The radar
The Sioux Falls radar (KFSD), 113 km from the middle of the area, began a volume at 18:30 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.
What was reported inside it
| Time | Report | Where | Remark |
|---|---|---|---|
| Jun 1, 1:45 PM CDT | HAIL 1.75 | Hartley, IA | |
| Jun 1, 1:48 PM CDT | HAIL 1.75 | Moneta, IA | |
| Jun 1, 1:50 PM CDT | HAIL 1.75 | 3 Wnw Everly, IA | |
| Jun 1, 1:51 PM CDT | HAIL 2.5 | 2 Ene Hartley, IA | DAMAGE TO TREES AND CARS |
Local storm reports filed while the alert was in force, from inside its polygon or its counties.
The nearest sounding before it
Omaha, NE (KOAX), launched 12:00Z, 6.5 hours before the alert went out and 218 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
- 1529 J/kg
- Mixed-layer CIN
- -110 J/kg
- Mixed-layer LCL
- 815 m above ground
- 0-6 km bulk shear
- 39 kt
- 0-1 km storm-relative helicity
- 80 m²/s²
- 0-3 km storm-relative helicity
- 36 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 2.1
The text
As transmitted, in the capitals the NWS used until 2016.
175 WFUS53 KFSD 011828 TORFSD IAC041-141-011900- /O.NEW.KFSD.TO.W.0008.100601T1828Z-100601T1900Z/ BULLETIN - EAS ACTIVATION REQUESTED TORNADO WARNING NATIONAL WEATHER SERVICE SIOUX FALLS SD 128 PM CDT TUE JUN 1 2010 THE NATIONAL WEATHER SERVICE IN SIOUX FALLS HAS ISSUED A * TORNADO WARNING FOR... NORTHWESTERN CLAY COUNTY IN NORTHWEST IOWA... CENTRAL O'BRIEN COUNTY IN NORTHWEST IOWA... * UNTIL 200 PM CDT * AT 128 PM CDT...NATIONAL WEATHER SERVICE METEOROLOGISTS WERE TRACKING A SEVERE THUNDERSTORM CAPABLE OF PRODUCING A TORNADO. THIS DANGEROUS STORM WAS LOCATED NEAR PRIMGHAR...OR 23 MILES WEST OF SPENCER...AND MOVING EAST AT 35 MPH. * THIS TORNADIC STORM WILL BE NEAR... HARTLEY AROUND 140 PM CDT... EVERLY AROUND 155 PM CDT... OTHER LOCATIONS IMPACTED BY THIS TORNADIC THUNDERSTORM INCLUDE MONETA. PRECAUTIONARY/PREPAREDNESS ACTIONS... TAKE COVER NOW. MOVE TO AN INTERIOR ROOM ON THE LOWEST FLOOR OF A STURDY BUILDING. AVOID WINDOWS. IF IN A MOBILE HOME...A VEHICLE OR OUTDOORS...MOVE TO THE CLOSEST SUBSTANTIAL SHELTER AND PROTECT YOURSELF FROM FLYING DEBRIS. && LAT...LON 4325 9533 4309 9527 4304 9565 4316 9570 TIME...MOT...LOC 1828Z 256DEG 29KT 4311 9559 $$ WILLIAMS
2 follow-up statements
889 WWUS53 KFSD 011841 SVSFSD SEVERE WEATHER STATEMENT NATIONAL WEATHER SERVICE SIOUX FALLS SD 141 PM CDT TUE JUN 1 2010 IAC041-141-011900- /O.CON.KFSD.TO.W.0008.000000T0000Z-100601T1900Z/ O'BRIEN IA-CLAY IA- 141 PM CDT TUE JUN 1 2010 ...A TORNADO WARNING REMAINS IN EFFECT FOR NORTHWESTERN CLAY AND EAST CENTRAL O'BRIEN COUNTIES UNTIL 200 PM CDT... AT 141 PM CDT...NATIONAL WEATHER SERVICE METEOROLOGISTS WERE TRACKING A SEVERE THUNDERSTORM CAPABLE OF PRODUCING A TORNADO. THIS DANGEROUS STORM WAS LOCATED NEAR HARTLEY...OR 15 MILES WEST OF SPENCER...MOVING EAST AT 40 MPH. THIS DANGEROUS STORM WILL BE NEAR... EVERLY AROUND 150 PM CDT... PRECAUTIONARY/PREPAREDNESS ACTIONS... TAKE COVER NOW. MOVE TO AN INTERIOR ROOM ON THE LOWEST FLOOR OF A STURDY BUILDING. AVOID WINDOWS. IF IN A MOBILE HOME...A VEHICLE OR OUTDOORS...MOVE TO THE CLOSEST SUBSTANTIAL SHELTER AND PROTECT YOURSELF FROM FLYING DEBRIS. && LAT...LON 4306 9551 4318 9559 4325 9533 4309 9527 TIME...MOT...LOC 1841Z 255DEG 33KT 4315 9541 $$ WILLIAMS
906 WWUS53 KFSD 011847 SVSFSD SEVERE WEATHER STATEMENT NATIONAL WEATHER SERVICE SIOUX FALLS SD 147 PM CDT TUE JUN 1 2010 IAC041-141-011900- /O.CON.KFSD.TO.W.0008.000000T0000Z-100601T1900Z/ O'BRIEN IA-CLAY IA- 147 PM CDT TUE JUN 1 2010 ...A TORNADO WARNING REMAINS IN EFFECT FOR NORTHWESTERN CLAY AND EAST CENTRAL O'BRIEN COUNTIES UNTIL 200 PM CDT... AT 146 PM CDT...NATIONAL WEATHER SERVICE METEOROLOGISTS WERE TRACKING A SEVERE THUNDERSTORM CAPABLE OF PRODUCING A TORNADO. THIS DANGEROUS STORM WAS LOCATED NEAR EVERLY...OR 12 MILES WEST OF SPENCER...MOVING EAST AT 40 MPH. AT 140 PM CDT A SPOTTER REPORTED A WALL CLOUD AND ROTATION 2 MILES EAST SOUTHEAST OF HARTLEY. THIS TORNADO WILL BE CLOSE TO EVERLY AT 155 PM CDT. PRECAUTIONARY/PREPAREDNESS ACTIONS... TAKE COVER NOW. MOVE TO AN INTERIOR ROOM ON THE LOWEST FLOOR OF A STURDY BUILDING. AVOID WINDOWS. IF IN A MOBILE HOME...A VEHICLE OR OUTDOORS...MOVE TO THE CLOSEST SUBSTANTIAL SHELTER AND PROTECT YOURSELF FROM FLYING DEBRIS. && LAT...LON 4306 9551 4318 9559 4325 9533 4309 9527 TIME...MOT...LOC 1846Z 255DEG 33KT 4316 9535 $$ WILLIAMS
The office that day
Everything else NWS Sioux Falls, SD issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jun 1, 1:07 PM CDT | Tornado Warning | FSD | O'Brien, Sioux | 23 min |
| Jun 1, 1:59 PM CDT | Tornado Warning | FSD | Clay | 31 min |
| Jun 1, 2:47 PM CDT | Severe Thunderstorm Warning | FSD | Cherokee, Plymouth | 28 min |
| Jun 1, 3:37 PM CDT | Severe Thunderstorm Warning | FSD | Ida, Woodbury | 23 min |
Nearby
Tornado Warnings in Iowa, 2010Every tornado warning in 2010Tornadoes 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; local storm reports from the same archive; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.