Alert archive / Iowa / Tornado Warnings in 2007
Tornado Warning 43, NWS Sioux Falls, SD
NWS Sioux Falls, SD issued this tornado warning at Aug 28, 2007, 4:32 PM CDT for Plymouth County, Iowa. It was in force for 28 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 28, 2007, 4:32 PM CDT (21:32 UTC)
- Expired
- Aug 28, 2007, 5:00 PM CDT
- In force
- 28 min
- Issued by
- NWS Sioux Falls, SD
- Area
- Counties, with a storm outline in the text
County Plymouth County, IA
The radar
The Sioux Falls radar (KFSD), 114 km from the middle of the area, began a volume at 21:34 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
Omaha, NE (KOAX), launched 12:00Z, 9.5 hours before the alert went out and 152 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
- 438 J/kg
- Mixed-layer CIN
- -240 J/kg
- Mixed-layer LCL
- 1545 m above ground
- 0-6 km bulk shear
- 22 kt
- 0-1 km storm-relative helicity
- 15 m²/s²
- 0-3 km storm-relative helicity
- 92 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted, in the capitals the NWS used until 2016.
000 WFUS53 KFSD 282133 TORFSD IAC149-282200- /O.NEW.KFSD.TO.W.0043.070828T2132Z-070828T2200Z/ BULLETIN - EAS ACTIVATION REQUESTED TORNADO WARNING NATIONAL WEATHER SERVICE SIOUX FALLS SD 432 PM CDT TUE AUG 28 2007 THE NATIONAL WEATHER SERVICE IN SIOUX FALLS HAS ISSUED A * TORNADO WARNING FOR... SOUTHEASTERN PLYMOUTH COUNTY IN NORTHWEST IOWA * UNTIL 500 PM CDT * AT 432 PM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A SEVERE THUNDERSTORM CAPABLE OF PRODUCING A TORNADO OVER SOUTH CENTRAL PLYMOUTH COUNTY...OR ABOUT 13 MILES SOUTH OF LE MARS... MOVING EAST AT 40 MPH. * THE TORNADO WILL REMAIN OVER RURAL AREAS EAST OF HINTON AND NORTH OF KINGSLEY. THIS IS AN EXTREMELY DANGEROUS AND LIFE THREATENING SITUATION. TAKE COVER NOW. LAT...LON 4269 9625 4257 9623 4260 9587 4281 9587 $$ SCHUMACHER
2 follow-up statements
000 WWUS53 KFSD 282146 SVSFSD SEVERE WEATHER STATEMENT NATIONAL WEATHER SERVICE SIOUX FALLS SD 445 PM CDT TUE AUG 28 2007 IAC149-282200- /O.CON.KFSD.TO.W.0043.000000T0000Z-070828T2200Z/ PLYMOUTH IA- 445 PM CDT TUE AUG 28 2007 ...A TORNADO WARNING REMAINS IN EFFECT UNTIL 500 PM CDT FOR SOUTHEASTERN PLYMOUTH COUNTY... AT 445 PM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR CONTINUED TO INDICATE A TORNADO. THIS TORNADO WAS LOCATED NEAR KINGSLEY...OR ABOUT 15 MILES SOUTHEAST OF LE MARS...MOVING EAST AT 30 MPH. THIS IS AN EXTREMELY DANGEROUS AND LIFE THREATENING SITUATION. TAKE COVER NOW. IN ADDITION TO THE TORNADO...THIS STORM IS CAPABLE OF PRODUCING QUARTER SIZE HAIL AND DESTRUCTIVE STRAIGHT LINE WINDS TO 60 MPH. THE THREAT FOR HAIL AND WINDS EXTENDS NORTH OF KINGSLEY. LAT...LON 4267 9606 4257 9608 4259 9587 4274 9587 $$ SCHUMACHER
000 WWUS53 KFSD 282204 SVSFSD SEVERE WEATHER STATEMENT NATIONAL WEATHER SERVICE SIOUX FALLS SD 504 PM CDT TUE AUG 28 2007 IAC149-282214- /O.EXP.KFSD.TO.W.0043.000000T0000Z-070828T2200Z/ PLYMOUTH IA- 504 PM CDT TUE AUG 28 2007 ...THE TORNADO WARNING FOR SOUTHEASTERN PLYMOUTH COUNTY EXPIRES AT 500 PM CDT... THE STORM HAS EXITED THE COUNTY. LAT...LON 4267 9606 4257 9608 4259 9587 4274 9587 $$ SCHUMACHER
The office that day
Everything else NWS Sioux Falls, SD issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Aug 28, 4:51 PM CDT | Severe Thunderstorm Warning | FSD | Cherokee | 39 min |
Nearby
Tornado Warnings in Iowa, 2007Every tornado warning in 2007Tornadoes in 2007
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.