Alert archive / Iowa / Severe Thunderstorm Warnings in 2016

Severe Thunderstorm Warning 77, NWS Sioux Falls, SD

June 17, 2016Plymouth County, Sioux County, Iowa

NWS Sioux Falls, SD issued this severe thunderstorm warning at Jun 17, 2016, 9:44 PM CDT for Plymouth County, Sioux County, Iowa. It was in force for 46 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: Jun 17, 2016, 9:44 PM CDT (02:44 UTC)
Expired: Jun 17, 2016, 10:30 PM CDT
In force: 46 min
Issued by: NWS Sioux Falls, SD
Area: Storm-based polygon
Hail: 0.75 in
Wind: 60.0 mph

Counties Plymouth County, IA, Sioux County, IA

The radar

The Sioux Falls radar (KFSD), 104 km from the middle of the area, began a volume at 02:46 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
Jun 17, 10:13 PM CDT	TSTM WND DMG	2 W Le Mars, IA	TREES DOWN IN THE AREA.
Jun 17, 10:28 PM CDT	HAIL 1	Kingsley, 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
Jun 17, 3:06 PM CDT	Severe Thunderstorm Watch	SPC	7 hr

The nearest sounding before it

Omaha, NE (KOAX), launched 00:00Z, 2.7 hours before the alert went out and 161 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-p

Temperature in red, dew point in green, the mixed-layer parcel dashed.

Hodograph

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: 3543 J/kg
Mixed-layer CIN: -70 J/kg
Mixed-layer LCL: 1690 m above ground
0-6 km bulk shear: 14 kt
0-1 km storm-relative helicity: 9 m²/s²
0-3 km storm-relative helicity: 90 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.0

Open this sounding in Storm Lab

The text

As transmitted.

464 
WUUS53 KFSD 180244
SVRFSD
IAC149-167-180330-
/O.NEW.KFSD.SV.W.0077.160618T0244Z-160618T0330Z/

BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE SIOUX FALLS SD
944 PM CDT FRI JUN 17 2016

THE NATIONAL WEATHER SERVICE IN SIOUX FALLS HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...
  SOUTHEASTERN SIOUX COUNTY IN NORTHWESTERN IOWA...
  EASTERN PLYMOUTH COUNTY IN NORTHWESTERN IOWA...

* UNTIL 1030 PM CDT

* AT 944 PM CDT...A SEVERE THUNDERSTORM WAS LOCATED OVER LE MARS...
  MOVING SOUTHEAST AT 20 MPH.

  HAZARD...60 MPH WIND GUSTS. 

  SOURCE...EMERGENCY MANAGEMENT. A 68 MPH WIND WAS REPORTED NEAR LE
           MARS.  

  IMPACT...EXPECT DAMAGE TO ROOFS...SIDING...AND TREES. 

* THIS SEVERE THUNDERSTORM WILL BE NEAR...
  REMSEN AROUND 1010 PM CDT. 

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

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

&&

LAT...LON 4268 9634 4297 9628 4291 9586 4256 9586
TIME...MOT...LOC 0244Z 294DEG 16KT 4279 9615 

HAIL...<.75IN
WIND...60MPH
 
$$

DUX

2 follow-up statements

092 
WWUS53 KFSD 180312
SVSFSD

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE SIOUX FALLS SD
1012 PM CDT FRI JUN 17 2016

IAC149-167-180330-
/O.CON.KFSD.SV.W.0077.000000T0000Z-160618T0330Z/
SIOUX IA-PLYMOUTH IA-
1012 PM CDT FRI JUN 17 2016

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 1030 PM CDT
FOR SOUTHEASTERN SIOUX AND EASTERN PLYMOUTH COUNTIES...

AT 1011 PM CDT...A SEVERE THUNDERSTORM WAS LOCATED NEAR REMSEN...OR 8
MILES EAST OF LE MARS...MOVING SOUTHEAST AT 20 MPH.

HAZARD...60 MPH WIND GUSTS. 

SOURCE...RADAR INDICATED.

IMPACT...EXPECT DAMAGE TO ROOFS...SIDING...AND TREES. 

THIS SEVERE THUNDERSTORM WILL REMAIN OVER MAINLY RURAL AREAS OF
SOUTHEASTERN SIOUX AND EASTERN PLYMOUTH COUNTIES...INCLUDING THE
FOLLOWING LOCATIONS: OYENS.

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 4267 9632 4295 9618 4291 9586 4256 9586
TIME...MOT...LOC 0311Z 292DEG 18KT 4275 9601 

HAIL...<.75IN
WIND...60MPH
 
$$

DUX

785 
WWUS53 KFSD 180327
SVSFSD

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE SIOUX FALLS SD
1027 PM CDT FRI JUN 17 2016

IAC149-167-180337-
/O.EXP.KFSD.SV.W.0077.000000T0000Z-160618T0330Z/
SIOUX IA-PLYMOUTH IA-
1027 PM CDT FRI JUN 17 2016

...THE SEVERE THUNDERSTORM WARNING FOR SOUTHEASTERN SIOUX AND EASTERN
PLYMOUTH COUNTIES WILL EXPIRE AT 1030 PM CDT...
        
THE STORM WHICH PROMPTED THE WARNING HAS MOVED OUT OF THE AREA.
THEREFORE...THE WARNING WILL BE ALLOWED TO EXPIRE.  HOWEVER GUSTY
WINDS TO 50 MPH ARE 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 4267 9632 4295 9618 4291 9586 4256 9586
TIME...MOT...LOC 0326Z 294DEG 16KT 4275 9601 

$$

DUX

The office that day

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

Issued	Product	Office	Counties	Lasted
Jun 17, 8:18 PM CDT	Severe Thunderstorm Warning	FSD	Buena Vista, Cherokee, Clay, Dickinson, Lyon, O'Brien and 2 more	42 min
Jun 17, 8:44 PM CDT	Severe Thunderstorm Warning	FSD	Plymouth, Sioux	46 min
Jun 17, 9:53 PM CDT	Severe Thunderstorm Warning	FSD	Plymouth, Woodbury	52 min
Jun 17, 10:14 PM CDT	Severe Thunderstorm Warning	FSD	Cherokee, Ida, Plymouth, Woodbury	46 min
Jun 17, 10:41 PM CDT	Severe Thunderstorm Warning	FSD	Woodbury	49 min
Jun 17, 10:57 PM CDT	Severe Thunderstorm Warning	FSD	Cherokee, Ida, Plymouth, Woodbury	37 min
Jun 17, 11:33 PM CDT	Flash Flood Warning	FSD	Cherokee, Ida, Plymouth, Woodbury	6 hr
Jun 18, 3:14 AM CDT	Heat Advisory	FSD	Lyon, Plymouth, Sioux, Woodbury	41 hr
Jun 18, 3:19 AM CDT	River Flood Warning	FSD	Woodbury	24 hr
Jun 18, 8:15 AM CDT	River Flood Warning	FSD	Clay, Dickinson	62 hr
Jun 18, 9:26 AM CDT	River Flood Warning	FSD	Monona, Woodbury	29 hr
Jun 18, 9:57 AM CDT	River Flood Warning	FSD	Clay, Dickinson	54 hr

Nearby

Severe Thunderstorm Warnings in Iowa, 2016 Every 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.