Alert archive / Iowa / Severe Thunderstorm Warnings in 2016
Severe Thunderstorm Warning 16, NWS Sioux Falls, SD
NWS Sioux Falls, SD issued this severe thunderstorm warning at May 23, 2016, 5:29 PM CDT for 4 counties in Iowa. It was in force for 46 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
- May 23, 2016, 5:29 PM CDT (22:29 UTC)
- Expired
- May 23, 2016, 6:15 PM CDT
- In force
- 46 min
- Issued by
- NWS Sioux Falls, SD
- Area
- Storm-based polygon
- Hail
- 1.0 in
- Wind
- 60.0 mph
Counties Lyon County, IA, O'Brien County, IA, Osceola County, IA, Sioux County, IA
The radar
The Sioux Falls radar (KFSD), 81 km from the middle of the area, began a volume at 22:31 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 23, 5:42 PM CDT | HAIL 1 | 3 Sse Matlock, IA | ALSO ESTIMATED 45 MPH WIND GUSTS. |
| May 23, 5:58 PM CDT | HAIL 1 | 4 W Ashton, IA | |
| May 23, 6:05 PM CDT | HAIL 1 | 5 Wnw Ashton, IA | |
| May 23, 6:08 PM CDT | HAIL 1 | 5 S Little Rock, IA |
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, 10.5 hours before the alert went out and 209 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
- 426 J/kg
- Mixed-layer CIN
- -163 J/kg
- Mixed-layer LCL
- 780 m above ground
- 0-6 km bulk shear
- 24 kt
- 0-1 km storm-relative helicity
- 184 m²/s²
- 0-3 km storm-relative helicity
- 219 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted.
289
WUUS53 KFSD 232229
SVRFSD
IAC119-141-143-167-232315-
/O.NEW.KFSD.SV.W.0016.160523T2229Z-160523T2315Z/
BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE SIOUX FALLS SD
529 PM CDT MON MAY 23 2016
THE NATIONAL WEATHER SERVICE IN SIOUX FALLS HAS ISSUED A
* SEVERE THUNDERSTORM WARNING FOR...
SOUTHWESTERN OSCEOLA COUNTY IN NORTHWESTERN IOWA...
SOUTHEASTERN LYON COUNTY IN NORTHWESTERN IOWA...
NORTHEASTERN SIOUX COUNTY IN NORTHWESTERN IOWA...
NORTHWESTERN O'BRIEN COUNTY IN NORTHWESTERN IOWA...
* UNTIL 615 PM CDT
* AT 528 PM CDT...A SEVERE THUNDERSTORM WAS LOCATED NEAR HOSPERS...OR 7
MILES SOUTHWEST OF SHELDON...MOVING NORTH AT 35 MPH.
HAZARD...60 MPH WIND GUSTS AND QUARTER SIZE HAIL.
SOURCE...RADAR INDICATED.
IMPACT...HAIL DAMAGE TO VEHICLES IS EXPECTED. EXPECT WIND DAMAGE
TO ROOFS...SIDING...AND TREES.
* THIS SEVERE THUNDERSTORM WILL BE NEAR...
BOYDEN AROUND 535 PM CDT.
SHELDON AROUND 540 PM CDT.
MATLOCK AROUND 545 PM CDT.
GEORGE AROUND 555 PM CDT.
ASHTON AROUND 600 PM CDT.
SIBLEY AROUND 610 PM CDT.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
FOR YOUR PROTECTION MOVE TO AN INTERIOR ROOM ON THE LOWEST FLOOR OF A
BUILDING.
TO REPORT SEVERE WEATHER...CONTACT YOUR NEAREST LAW ENFORCEMENT
AGENCY. THEY WILL SEND YOUR REPORT TO THE NATIONAL WEATHER SERVICE
OFFICE IN SIOUX FALLS.
&&
LAT...LON 4299 9590 4303 9614 4345 9601 4338 9562
TIME...MOT...LOC 2228Z 198DEG 28KT 4312 9598
HAIL...1.00IN
WIND...60MPH
$$
DUX3 follow-up statements
944
WWUS53 KFSD 232241
SVSFSD
SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE SIOUX FALLS SD
541 PM CDT MON MAY 23 2016
IAC119-141-143-167-232315-
/O.CON.KFSD.SV.W.0016.000000T0000Z-160523T2315Z/
OSCEOLA IA-LYON IA-SIOUX IA-O'BRIEN IA-
541 PM CDT MON MAY 23 2016
...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 615 PM CDT
FOR SOUTHWESTERN OSCEOLA...SOUTHEASTERN LYON...NORTHEASTERN SIOUX AND
NORTHWESTERN O'BRIEN COUNTIES...
AT 540 PM CDT...A SEVERE THUNDERSTORM WAS LOCATED OVER MATLOCK...OR
NEAR SHELDON...MOVING NORTHEAST AT 40 MPH.
HAZARD...60 MPH WIND GUSTS AND QUARTER SIZE HAIL.
SOURCE...RADAR INDICATED.
IMPACT...HAIL DAMAGE TO VEHICLES IS EXPECTED. EXPECT WIND DAMAGE TO
ROOFS...SIDING...AND TREES.
THIS SEVERE STORM WILL BE NEAR...
GEORGE AROUND 550 PM CDT.
ASHTON AROUND 555 PM CDT.
SIBLEY AROUND 605 PM CDT.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
FOR YOUR PROTECTION MOVE TO AN INTERIOR ROOM ON THE LOWEST FLOOR OF A
BUILDING.
TO REPORT SEVERE WEATHER CONTACT YOUR NEAREST LAW ENFORCEMENT AGENCY.
THEY WILL SEND YOUR REPORT TO THE NATIONAL WEATHER SERVICE OFFICE IN
SIOUX FALLS.
&&
LAT...LON 4308 9586 4319 9605 4344 9597 4338 9562
TIME...MOT...LOC 2240Z 203DEG 33KT 4320 9593
HAIL...1.00IN
WIND...60MPH
$$
DUX024
WWUS53 KFSD 232254
SVSFSD
SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE SIOUX FALLS SD
554 PM CDT MON MAY 23 2016
IAC119-141-143-167-232315-
/O.CON.KFSD.SV.W.0016.000000T0000Z-160523T2315Z/
OSCEOLA IA-LYON IA-SIOUX IA-O'BRIEN IA-
554 PM CDT MON MAY 23 2016
...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 615 PM CDT
FOR SOUTHWESTERN OSCEOLA...SOUTHEASTERN LYON...NORTHEASTERN SIOUX AND
NORTHWESTERN O'BRIEN COUNTIES...
AT 553 PM CDT...A SEVERE THUNDERSTORM WAS LOCATED OVER MATLOCK...OR
NEAR SHELDON...MOVING NORTH AT 35 MPH.
HAZARD...60 MPH WIND GUSTS AND QUARTER SIZE HAIL.
SOURCE...TRAINED SPOTTERS. AT 542 PM CDT QUARTER SIZE HAIL WAS
REPORTED 3 MILES SOUTH SOUTH EAST OF MATLOCK.
IMPACT...HAIL DAMAGE TO VEHICLES IS EXPECTED. EXPECT WIND DAMAGE TO
ROOFS...SIDING...AND TREES.
THIS SEVERE STORM WILL BE NEAR...
GEORGE AROUND 605 PM CDT.
ASHTON AROUND 610 PM CDT.
SIBLEY AROUND 615 PM CDT.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
FOR YOUR PROTECTION MOVE TO AN INTERIOR ROOM ON THE LOWEST FLOOR OF A
BUILDING.
TO REPORT SEVERE WEATHER CONTACT YOUR NEAREST LAW ENFORCEMENT AGENCY.
THEY WILL SEND YOUR REPORT TO THE NATIONAL WEATHER SERVICE OFFICE IN
SIOUX FALLS.
&&
LAT...LON 4318 9579 4325 9603 4344 9597 4338 9562
TIME...MOT...LOC 2253Z 197DEG 29KT 4322 9592
HAIL...1.00IN
WIND...60MPH
$$
DUX579
WWUS53 KFSD 232311 RRA
SVSFSD
SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE SIOUX FALLS SD
611 PM CDT MON MAY 23 2016
IAC119-141-143-167-232321-
/O.EXP.KFSD.SV.W.0016.000000T0000Z-160523T2315Z/
OSCEOLA IA-LYON IA-SIOUX IA-O'BRIEN IA-
611 PM CDT MON MAY 23 2016
...THE SEVERE THUNDERSTORM WARNING FOR SOUTHWESTERN OSCEOLA...
SOUTHEASTERN LYON...NORTHEASTERN SIOUX AND NORTHWESTERN O'BRIEN
COUNTIES WILL EXPIRE AT 615 PM CDT...
THE STORM WHICH PROMPTED THE WARNING HAS MOVED OUT OF THE AREA.
THEREFORE THE WARNING WILL BE ALLOWED TO EXPIRE. HOWEVER HEAVY RAIN
IS STILL POSSIBLE WITH THIS THUNDERSTORM.
TO REPORT SEVERE WEATHER...CONTACT YOUR NEAREST LAW ENFORCEMENT
AGENCY. THEY WILL RELAY YOUR REPORT TO THE NATIONAL WEATHER SERVICE
SIOUX FALLS.
LAT...LON 4318 9579 4325 9603 4344 9597 4338 9562
TIME...MOT...LOC 2310Z 198DEG 28KT 4322 9592
$$
DUXThe office that day
Everything else NWS Sioux Falls, SD issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| May 23, 4:27 PM CDT | Severe Thunderstorm Warning | FSD | Plymouth, Woodbury | 33 min |
| May 23, 5:22 PM CDT | Severe Thunderstorm Warning | FSD | Plymouth | 23 min |
| May 23, 5:25 PM CDT | Flash Flood Warning | FSD | O'Brien, Plymouth, Sioux | 4 hr |
| May 23, 5:39 PM CDT | Severe Thunderstorm Warning | FSD | Plymouth | 36 min |
| May 23, 5:58 PM CDT | Flash Flood Warning | FSD | Plymouth, Sioux | 4 hr |
| May 23, 6:06 PM CDT | Severe Thunderstorm Warning | FSD | Lyon, Osceola | 39 min |
| May 23, 6:09 PM CDT | Flash Flood Warning | FSD | Osceola | 4 hr |
| May 23, 6:23 PM CDT | Severe Thunderstorm Warning | FSD | Cherokee, Plymouth | 37 min |
| May 23, 6:49 PM CDT | Severe Thunderstorm Warning | FSD | Cherokee, Clay, O'Brien | 23 min |
Nearby
Severe Thunderstorm Warnings in Iowa, 2016Every severe thunderstorm warning in 2016
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.