Alert archive / Iowa / Severe Thunderstorm Warnings in 2014
Severe Thunderstorm Warning 13, NWS Sioux Falls, SD
NWS Sioux Falls, SD issued this severe thunderstorm warning at May 11, 2014, 6:03 PM CDT for Cherokee County, Iowa. It was in force for 27 min. 2 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
- May 11, 2014, 6:03 PM CDT (23:03 UTC)
- Expired
- May 11, 2014, 6:30 PM CDT
- In force
- 27 min
- Issued by
- NWS Sioux Falls, SD
- Area
- Storm-based polygon
- Hail
- 1.0 in
- Wind
- 50.0 mph
County Cherokee County, IA
The radar
The Sioux Falls radar (KFSD), 123 km from the middle of the area, began a volume at 23:04 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 |
|---|---|---|---|
| May 11, 6:10 PM CDT | HAIL 1.5 | 2 Nnw Quimby, IA | |
| May 11, 6:22 PM CDT | HAIL 1 | Meriden, IA |
Local storm reports filed while the alert was in force, from inside its polygon or its counties.
The nearest sounding before it
Minneapolis, MN (KMPX), launched 12:00Z, 11.1 hours before the alert went out and 289 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
- 0 J/kg
- Mixed-layer CIN
- No buoyant parcel
- Mixed-layer LCL
- 1490 m above ground
- 0-6 km bulk shear
- 56 kt
- 0-1 km storm-relative helicity
- 45 m²/s²
- 0-3 km storm-relative helicity
- 129 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted, in the capitals the NWS used until 2016.
389 WUUS53 KFSD 112303 SVRFSD IAC035-112330- /O.NEW.KFSD.SV.W.0013.140511T2303Z-140511T2330Z/ BULLETIN - IMMEDIATE BROADCAST REQUESTED SEVERE THUNDERSTORM WARNING NATIONAL WEATHER SERVICE SIOUX FALLS SD 603 PM CDT SUN MAY 11 2014 THE NATIONAL WEATHER SERVICE IN SIOUX FALLS HAS ISSUED A * SEVERE THUNDERSTORM WARNING FOR... CHEROKEE COUNTY IN NORTHWEST IOWA... * UNTIL 630 PM CDT * AT 600 PM CDT...A SEVERE THUNDERSTORM WAS LOCATED NEAR WASHTA...AND MOVING NORTHEAST AT 35 MPH. HAZARD...QUARTER SIZE HAIL. SOURCE...RADAR INDICATED. IMPACT...DAMAGE TO VEHICLES IS EXPECTED. * THE SEVERE THUNDERSTORM WILL BE NEAR... MERIDEN AND CLEGHORN AROUND 625 PM CDT. LARRABEE AROUND 630 PM CDT. PRECAUTIONARY/PREPAREDNESS ACTIONS... FOR YOUR PROTECTION MOVE TO AN INTERIOR ROOM ON THE LOWEST FLOOR OF A BUILDING. && LAT...LON 4290 9583 4286 9543 4256 9574 4257 9584 TIME...MOT...LOC 2303Z 206DEG 33KT 4260 9575 HAIL...1.00IN WIND...<50MPH $$ CHAPMAN
2 follow-up statements
250 WWUS53 KFSD 112315 SVSFSD SEVERE WEATHER STATEMENT NATIONAL WEATHER SERVICE SIOUX FALLS SD 615 PM CDT SUN MAY 11 2014 IAC035-112330- /O.CON.KFSD.SV.W.0013.000000T0000Z-140511T2330Z/ CHEROKEE IA- 615 PM CDT SUN MAY 11 2014 ...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT FOR CHEROKEE COUNTY UNTIL 630 PM CDT... AT 614 PM CDT...NATIONAL WEATHER SERVICE METEOROLOGISTS WERE TRACKING A SEVERE THUNDERSTORM CAPABLE OF PRODUCING QUARTER SIZE HAIL. THIS STORM WAS LOCATED JUST NORTH OF QUIMBY...OR 24 MILES WEST OF STORM LAKE...MOVING NORTHEAST AT 50 MPH. THE SEVERE THUNDERSTORM WILL BE NEAR... MERIDEN AROUND 620 PM CDT... LARRABEE AROUND 630 PM CDT... OTHER LOCATIONS IMPACTED BY THIS SEVERE THUNDERSTORM INCLUDE CLEGHORN AND CHEROKEE. PRECAUTIONARY/PREPAREDNESS ACTIONS... SEVERE THUNDERSTORMS PRODUCE DAMAGING WIND IN EXCESS OF 60 MILES PER HOUR...DESTRUCTIVE HAIL...DEADLY LIGHTNING...AND VERY HEAVY RAIN. FOR YOUR PROTECTION MOVE TO AN INTERIOR ROOM ON THE LOWEST FLOOR OF YOUR HOME OR BUSINESS. HEAVY RAINS FLOOD ROADS QUICKLY SO DO NOT DRIVE INTO AREAS WHERE WATER COVERS THE ROAD. && LAT...LON 4262 9568 4266 9578 4290 9583 4286 9543 TIME...MOT...LOC 2314Z 212DEG 42KT 4271 9565 WIND...HAIL <58MPH 1.00IN $$ CHAPMAN
083 WWUS53 KFSD 112330 SVSFSD SEVERE WEATHER STATEMENT NATIONAL WEATHER SERVICE SIOUX FALLS SD 630 PM CDT SUN MAY 11 2014 IAC035-112339- /O.EXP.KFSD.SV.W.0013.000000T0000Z-140511T2330Z/ CHEROKEE IA- 630 PM CDT SUN MAY 11 2014 ...THE SEVERE THUNDERSTORM WARNING FOR CHEROKEE COUNTY WILL EXPIRE AT 630 PM CDT... THE STORM WHICH PROMPTED THE WARNING HAS WEAKENED AND MOVED OUT OF THE WARNED AREA...HOWEVER HAIL UP TO DIME SIZE IS STILL POSSIBLE WITH THIS THUNDERSTORM NEAR LARRABEE. HAIL UP TO DIME SIZE IS ALSO LIEKLY BEFORE 645 PM WITH A SECOND STORM MOVING NORTHEAST AT 45 MPH TOWARD AURELIA. LAT...LON 4262 9568 4266 9578 4290 9583 4286 9543 TIME...MOT...LOC 2329Z 212DEG 42KT 4286 9552 $$ CHAPMAN
The office that day
Everything else NWS Sioux Falls, SD issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| May 11, 6:41 PM CDT | Severe Thunderstorm Warning | FSD | Clay, O'Brien | 34 min |
Nearby
Severe Thunderstorm Warnings in Iowa, 2014Every severe thunderstorm warning in 2014
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.