Alert archive / Iowa / Severe Thunderstorm Warnings in 2016

Severe Thunderstorm Warning 4, NWS Sioux Falls, SD

April 24, 2016Cherokee County, Plymouth County, Woodbury County, Iowa

NWS Sioux Falls, SD issued this severe thunderstorm warning at Apr 24, 2016, 6:04 PM CDT for Cherokee County, Plymouth County, Woodbury County, Iowa. It was in force for 24 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
Apr 24, 2016, 6:04 PM CDT (23:04 UTC)
Expired
Apr 24, 2016, 6:28 PM CDT
In force
24 min
Issued by
NWS Sioux Falls, SD
Area
Storm-based polygon
Hail
1.25 in
Wind
60.0 mph

Counties Cherokee County, IA, Plymouth County, IA, Woodbury County, IA

The radar

The Omaha radar (KOAX), 119 km from the middle of the area, began a volume at 23:06 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

TimeReportWhereRemark
Apr 24, 6:05 PM CDTHAIL 14 W Sloan, IA
Apr 24, 6:05 PM CDTHAIL 1Sloan, 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.

IssuedProductOfficeLasted
Apr 24, 2:28 PM CDTSevere Thunderstorm WatchSPC8 hr

The nearest sounding before it

Omaha, NE (KOAX), launched 12:00Z, 11.1 hours before the alert went out and 119 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.

Skew-T log-pSkew-T log-p diagram, Omaha, NE at 12:00Z on 2016-04-24Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 0 joules per kilogram.LCL10008507005003002001001 km2 km3 km6 km9 km12 km15 km-30°-20°-10°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Omaha, NE at 12:00Z on 2016-04-24The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 440 square meters per square second.193958Sfc1 km3 km6 km9 kmRMLM
The wind turning with height, colored by layer: ground to 1 km, 1 to 3 km, 3 to 6 km, 6 to 10 km.
Mixed-layer CAPE
0 J/kg
Mixed-layer CIN
No buoyant parcel
Mixed-layer LCL
1281 m above ground
0-6 km bulk shear
26 kt
0-1 km storm-relative helicity
440 m²/s²
0-3 km storm-relative helicity
498 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.0

Open this sounding in Storm Lab

The text

As transmitted.

933 
WUUS53 KFSD 242304
SVRFSD
IAC035-149-193-242345-
/O.NEW.KFSD.SV.W.0004.160424T2304Z-160424T2345Z/

BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE SIOUX FALLS SD
604 PM CDT SUN APR 24 2016

THE NATIONAL WEATHER SERVICE IN SIOUX FALLS HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...
  WEST CENTRAL CHEROKEE COUNTY IN NORTHWESTERN IOWA...
  CENTRAL WOODBURY COUNTY IN WEST CENTRAL IOWA...
  EASTERN PLYMOUTH COUNTY IN NORTHWESTERN IOWA...

* UNTIL 645 PM CDT

* AT 603 PM CDT...A SEVERE THUNDERSTORM WAS LOCATED OVER SALIX...OR 16
  MILES SOUTH OF SIOUX CITY...MOVING NORTH AT 65 MPH.

  HAZARD...60 MPH WIND GUSTS AND HALF DOLLAR 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...
  LAWTON AROUND 615 PM CDT. 
  MOVILLE AROUND 620 PM CDT. 
  KINGSLEY AROUND 630 PM CDT. 
  LE MARS AROUND 635 PM CDT. 
  REMSEN AROUND 640 PM CDT. 

OTHER LOCATIONS IMPACTED BY THIS SEVERE THUNDERSTORM INCLUDE OYENS
AND BRONSON.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

FOR YOUR PROTECTION MOVE TO AN INTERIOR ROOM ON THE LOWEST FLOOR OF A
BUILDING.

&&

LAT...LON 4222 9634 4223 9632 4225 9633 4228 9637
      4291 9619 4278 9572 4221 9616
TIME...MOT...LOC 2303Z 202DEG 58KT 4228 9628 

HAIL...1.25IN
WIND...60MPH
 
$$

MJF
2 follow-up statements
442 
WWUS53 KFSD 242322
SVSFSD

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE SIOUX FALLS SD
622 PM CDT SUN APR 24 2016

IAC035-149-193-242345-
/O.CON.KFSD.SV.W.0004.000000T0000Z-160424T2345Z/
CHEROKEE IA-WOODBURY IA-PLYMOUTH IA-
622 PM CDT SUN APR 24 2016

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 645 PM CDT
FOR WEST CENTRAL CHEROKEE...WESTERN WOODBURY AND EASTERN PLYMOUTH
COUNTIES...

AT 621 PM CDT...A SEVERE THUNDERSTORM WAS LOCATED NEAR LAWTON...OR
12 MILES NORTHEAST OF SIOUX CITY...MOVING NORTHEAST AT 55 MPH.
CURRENTLY THE STORM HAS BEEN WEAKENING AS IT MOVES INTO PLYMOUTH
COUNTY.

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...
  LE MARS AROUND 640 PM CDT. 
  REMSEN AROUND 645 PM CDT. 

OTHER LOCATIONS IMPACTED BY THIS SEVERE THUNDERSTORM INCLUDE OYENS
AND BRONSON.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

FOR YOUR PROTECTION MOVE TO AN INTERIOR ROOM ON THE LOWEST FLOOR OF A
BUILDING.

&&

LAT...LON 4237 9634 4291 9619 4278 9572 4229 9610
TIME...MOT...LOC 2321Z 206DEG 49KT 4257 9617 

HAIL...1.00IN
WIND...60MPH
 
$$

MJF
923 
WWUS53 KFSD 242328
SVSFSD

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE SIOUX FALLS SD
628 PM CDT SUN APR 24 2016

IAC035-149-193-242338-
/O.CAN.KFSD.SV.W.0004.000000T0000Z-160424T2345Z/
CHEROKEE IA-WOODBURY IA-PLYMOUTH IA-
628 PM CDT SUN APR 24 2016

...THE SEVERE THUNDERSTORM WARNING FOR WEST CENTRAL CHEROKEE...
WESTERN WOODBURY AND EASTERN PLYMOUTH COUNTIES IS CANCELLED...
                
THE STORM WHICH PROMPTED THE WARNING HAS WEAKENED BELOW SEVERE
LIMITS...AND NO LONGER POSE AN IMMEDIATE THREAT TO LIFE OR PROPERTY.
THEREFORE THE WARNING HAS BEEN CANCELLED.

A SEVERE THUNDERSTORM WATCH REMAINS IN EFFECT UNTIL 1000 PM CDT FOR
NORTHWESTERN IOWA.

LAT...LON 4237 9634 4291 9619 4278 9572 4229 9610
TIME...MOT...LOC 2327Z 202DEG 58KT 4268 9611 

$$

MJF

The office that day

Everything else NWS Sioux Falls, SD issued on the same UTC day.

IssuedProductOfficeCountiesLasted
Apr 24, 4:06 PM CDTSevere Thunderstorm WarningFSDCherokee, Plymouth, Woodbury39 min
Apr 24, 4:43 PM CDTSevere Thunderstorm WarningFSDBuena Vista, Cherokee, Ida, Plymouth, Woodbury47 min
Apr 24, 5:27 PM CDTSevere Thunderstorm WarningFSDBuena Vista, Cherokee, Clay, O'Brien33 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.