Alert archive / Iowa / Severe Thunderstorm Warnings in 2012
Severe Thunderstorm Warning 176, NWS Sioux Falls, SD
NWS Sioux Falls, SD issued this severe thunderstorm warning at Jul 25, 2012, 5:43 PM CDT for Woodbury County, Iowa. It was in force for 47 min. 1 report 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
- Jul 25, 2012, 5:43 PM CDT (22:43 UTC)
- Expired
- Jul 25, 2012, 6:30 PM CDT
- In force
- 47 min
- Issued by
- NWS Sioux Falls, SD
- Area
- Storm-based polygon
- Hail
- 1.75 in
- Wind
- 58.0 mph
County Woodbury County, IA
The radar
The Omaha radar (KOAX), 131 km from the middle of the area, began a volume at 22:44 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.
What was reported inside it
| Time | Report | Where | Remark |
|---|---|---|---|
| Jul 25, 5:47 PM CDT | HAIL 1.75 | 5 Sse Moville, IA |
Local storm reports filed while the alert was in force, from inside its polygon or its counties.
The watch it was issued in
The SPC watch in force over the same counties when this warning went out.
| Issued | Product | Office | Lasted |
|---|---|---|---|
| Jul 25, 5:16 PM CDT | Severe Thunderstorm Watch | SPC | 8 hr |
The nearest sounding before it
Omaha, NE (KOAX), launched 12:00Z, 10.7 hours before the alert went out and 131 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
- 675 J/kg
- Mixed-layer CIN
- -402 J/kg
- Mixed-layer LCL
- 2150 m above ground
- 0-6 km bulk shear
- 14 kt
- 0-1 km storm-relative helicity
- 198 m²/s²
- 0-3 km storm-relative helicity
- 222 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.1
The text
As transmitted, in the capitals the NWS used until 2016.
729 WUUS53 KFSD 252243 SVRFSD IAC193-252330- /O.NEW.KFSD.SV.W.0176.120725T2243Z-120725T2330Z/ BULLETIN - IMMEDIATE BROADCAST REQUESTED SEVERE THUNDERSTORM WARNING NATIONAL WEATHER SERVICE SIOUX FALLS SD 543 PM CDT WED JUL 25 2012 THE NATIONAL WEATHER SERVICE IN SIOUX FALLS HAS ISSUED A * SEVERE THUNDERSTORM WARNING FOR... NORTHEASTERN WOODBURY COUNTY IN WEST CENTRAL IOWA... * UNTIL 630 PM CDT * AT 543 PM CDT...NATIONAL WEATHER SERVICE METEOROLOGISTS WERE TRACKING A SEVERE THUNDERSTORM CAPABLE OF PRODUCING GOLF BALL SIZE HAIL. THIS STORM WAS LOCATED 5 MILES SOUTH OF MOVILLE...OR 19 MILES EAST OF SIOUX CITY...AND MOVING EAST AT 5 MPH. * THE SEVERE THUNDERSTORM WILL BE NEAR... ANTHON AND PIERSON AROUND 630 PM CDT... PRECAUTIONARY/PREPAREDNESS ACTIONS... SEVERE THUNDERSTORMS PRODUCE DAMAGING WIND IN EXCESS OF 60 MILES PER HOUR...DESTRUCTIVE HAIL...DEADLY LIGHTNING...AND VERY HEAVY RAIN. FOR YOUR PROTECTION MOVE TO AN INTERIOR ROOM ON THE LOWEST FLOOR OF YOUR HOME OR BUSINESS. HEAVY RAINS FLOOD ROADS QUICKLY SO DO NOT DRIVE INTO AREAS WHERE WATER COVERS THE ROAD. && LAT...LON 4255 9586 4233 9576 4233 9605 4250 9620 TIME...MOT...LOC 2243Z 269DEG 5KT 4242 9602 WIND...HAIL <58MPH 1.75IN $$ SCHUMACHER
2 follow-up statements
029 WWUS53 KFSD 252310 SVSFSD SEVERE WEATHER STATEMENT NATIONAL WEATHER SERVICE SIOUX FALLS SD 610 PM CDT WED JUL 25 2012 IAC193-252330- /O.CON.KFSD.SV.W.0176.000000T0000Z-120725T2330Z/ WOODBURY IA- 610 PM CDT WED JUL 25 2012 ...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT FOR CENTRAL WOODBURY COUNTY UNTIL 630 PM CDT... AT 610 PM CDT...NATIONAL WEATHER SERVICE METEOROLOGISTS WERE TRACKING A SEVERE THUNDERSTORM CAPABLE OF PRODUCING QUARTER SIZE HAIL...AND DAMAGING WINDS IN EXCESS OF 60 MPH. THIS STORM WAS LOCATED 6 MILES WEST OF ANTHON...OR 22 MILES EAST OF SIOUX CITY...MOVING EAST AT 5 MPH. THE SEVERE THUNDERSTORM WILL BE NEAR... ANTHON AROUND 630 PM CDT... PRECAUTIONARY/PREPAREDNESS ACTIONS... SEVERE THUNDERSTORMS PRODUCE DAMAGING WIND IN EXCESS OF 60 MILES PER HOUR...DESTRUCTIVE HAIL...DEADLY LIGHTNING...AND VERY HEAVY RAIN. FOR YOUR PROTECTION MOVE TO AN INTERIOR ROOM ON THE LOWEST FLOOR OF YOUR HOME OR BUSINESS. HEAVY RAINS FLOOD ROADS QUICKLY SO DO NOT DRIVE INTO AREAS WHERE WATER COVERS THE ROAD. && LAT...LON 4247 9582 4233 9576 4233 9605 4240 9611 TIME...MOT...LOC 2310Z 269DEG 5KT 4242 9597 WIND...HAIL 60MPH 1.00IN $$ SCHUMACHER
939 WWUS53 KFSD 252322 SVSFSD SEVERE WEATHER STATEMENT NATIONAL WEATHER SERVICE SIOUX FALLS SD 622 PM CDT WED JUL 25 2012 IAC193-252333- /O.EXP.KFSD.SV.W.0176.000000T0000Z-120725T2330Z/ WOODBURY IA- 622 PM CDT WED JUL 25 2012 ...THE SEVERE THUNDERSTORM WARNING FOR CENTRAL WOODBURY COUNTY WILL EXPIRE AT 630 PM CDT... THE STORM WHICH PROMPTED THE WARNING HAS WEAKENED BELOW SEVERE LIMITS...AND NO LONGER POSES AN IMMEDIATE THREAT TO LIFE OR PROPERTY...HOWEVER GUSTY WINDS AND HEAVY RAIN ARE STILL POSSIBLE WITH THIS THUNDERSTORM. LAT...LON 4247 9582 4233 9576 4233 9605 4240 9611 TIME...MOT...LOC 2323Z 269DEG 5KT 4242 9595 $$ SCHUMACHER
The office that day
Everything else NWS Sioux Falls, SD issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jul 25, 5:11 PM CDT | Severe Thunderstorm Warning | FSD | Sioux | 34 min |
| Jul 25, 5:15 PM CDT | Severe Thunderstorm Warning | FSD | Dickinson | 39 min |
| Jul 25, 5:16 PM CDT | Severe Thunderstorm Warning | FSD | Woodbury | 29 min |
| Jul 25, 5:25 PM CDT | Severe Thunderstorm Warning | FSD | Cherokee, O'Brien | 35 min |
| Jul 25, 5:31 PM CDT | Severe Thunderstorm Warning | FSD | Woodbury | 59 min |
| Jul 25, 6:03 PM CDT | Severe Thunderstorm Warning | FSD | Clay, Dickinson | 42 min |
Nearby
Severe Thunderstorm Warnings in Iowa, 2012Every severe thunderstorm warning in 2012
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.