Alert archive / Iowa / Severe Thunderstorm Warnings in 2016

Severe Thunderstorm Warning 49, NWS Sioux Falls, SD

June 10, 20164 counties in Iowa

NWS Sioux Falls, SD issued this severe thunderstorm warning at Jun 10, 2016, 9:59 PM CDT for 4 counties in Iowa. It was in force for 61 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: Jun 10, 2016, 9:59 PM CDT (02:59 UTC)
Expired: Jun 10, 2016, 11:00 PM CDT
In force: 61 min
Issued by: NWS Sioux Falls, SD
Area: Storm-based polygon
Hail: 0.75 in
Wind: 60.0 mph

Counties Buena Vista County, IA, Cherokee County, IA, Clay County, IA, O'Brien County, IA

The radar

The Sioux Falls radar (KFSD), 135 km from the middle of the area, began a volume at 02:59 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 10, 10:02 PM CDT	TSTM WND GST 70	4 N Rossie, IA	SOCIAL MEDIA REPORT.

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 00:00Z, 3.0 hours before the alert went out and 205 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: 2023 J/kg
Mixed-layer CIN: -30 J/kg
Mixed-layer LCL: 2057 m above ground
0-6 km bulk shear: 29 kt
0-1 km storm-relative helicity: -5 m²/s²
0-3 km storm-relative helicity: 180 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 6.8

Open this sounding in Storm Lab

The text

As transmitted.

142 
WUUS53 KFSD 110259
SVRFSD
IAC021-035-041-141-110400-
/O.NEW.KFSD.SV.W.0049.160611T0259Z-160611T0400Z/

BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE SIOUX FALLS SD
959 PM CDT FRI JUN 10 2016

THE NATIONAL WEATHER SERVICE IN SIOUX FALLS HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...
  NORTHEASTERN CHEROKEE COUNTY IN NORTHWESTERN IOWA...
  EASTERN O'BRIEN COUNTY IN NORTHWESTERN IOWA...
  NORTHERN BUENA VISTA COUNTY IN NORTHWESTERN IOWA...
  CLAY COUNTY IN NORTHWESTERN IOWA...

* UNTIL 1100 PM CDT

* AT 957 PM CDT...A SEVERE THUNDERSTORM WAS LOCATED NEAR GREENVILLE...
  OR 7 MILES SOUTH OF SPENCER IN CLAY COUNTY...MOVING SOUTHEAST AT 20
  MPH. ANOTHER STRONG TO SEVERE CELL WAS LOCATED NEAR EVERLY.

  HAZARD...60 MPH WIND GUSTS AND PENNY SIZE HAIL. 

  SOURCE...RADAR INDICATED. 

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

* THIS SEVERE THUNDERSTORM WILL BE NEAR...
  GREENVILLE AROUND 1010 PM CDT. 
  LINN GROVE AROUND 1025 PM CDT. 
  SIOUX RAPIDS AND WEBB AROUND 1035 PM CDT. 
  MARATHON AROUND 1055 PM CDT. 

OTHER LOCATIONS IMPACTED BY THIS SEVERE THUNDERSTORM INCLUDE DICKENS...
ROSSIE...GILLETT GROVE AND MONETA.

AT 950 PM...A 65 MPH WIND GUST WAS ESTIMATED 3 MILES EAST OF ROYAL.
WIND IS THE PRIMARY THREAT WITH THESE STORMS AT THIS POINT.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

&&

LAT...LON 4283 9550 4321 9549 4320 9497 4283 9497
TIME...MOT...LOC 0257Z 332DEG 15KT 4305 9520 

HAIL...0.75IN
WIND...60MPH
 
$$

MJF

2 follow-up statements

660 
WWUS53 KFSD 110328
SVSFSD

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE SIOUX FALLS SD
1028 PM CDT FRI JUN 10 2016

IAC021-035-041-141-110400-
/O.CON.KFSD.SV.W.0049.000000T0000Z-160611T0400Z/
CHEROKEE IA-O'BRIEN IA-BUENA VISTA IA-CLAY IA-
1028 PM CDT FRI JUN 10 2016

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 1100 PM CDT
FOR NORTHEASTERN CHEROKEE...SOUTHEASTERN O'BRIEN...NORTHERN BUENA
VISTA AND SOUTHERN CLAY COUNTIES...

AT 1026 PM CDT...A SEVERE THUNDERSTORM WAS LOCATED NEAR LINN
GROVE...OR 14 MILES SOUTH OF SPENCER IN CLAY COUNTY...MOVING
SOUTHEAST AT 25 MPH. THIS STORM WAS PART OF A LARGER CLUSTER OF
STORMS EXTENDING INTO SOUTHWEST CLAY COUNTY AND EXTREME SOUTHEAST O
BRIEN COUNTY. THE MAIN THREAT AT THIS POINT CONTINUES TO BE STRONG
WINDS.

HAZARD...60 MPH WIND GUSTS. 

SOURCE...RADAR INDICATED. 

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

THIS SEVERE STORM WILL BE NEAR...
  LINN GROVE AROUND 1030 PM CDT. 
  SIOUX RAPIDS AROUND 1040 PM CDT. 
  MARATHON AROUND 1055 PM CDT. 

OTHER LOCATIONS IMPACTED BY THIS SEVERE THUNDERSTORM INCLUDE ROSSIE
AND GILLETT GROVE.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

&&

LAT...LON 4283 9550 4309 9549 4309 9497 4283 9497
TIME...MOT...LOC 0326Z 318DEG 22KT 4294 9523 

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

MJF

740 
WWUS53 KFSD 110355
SVSFSD

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE SIOUX FALLS SD
1055 PM CDT FRI JUN 10 2016

IAC021-035-041-141-110404-
/O.EXP.KFSD.SV.W.0049.000000T0000Z-160611T0400Z/
CHEROKEE IA-O'BRIEN IA-BUENA VISTA IA-CLAY IA-
1055 PM CDT FRI JUN 10 2016

...THE SEVERE THUNDERSTORM WARNING FOR NORTHEASTERN CHEROKEE...
SOUTHEASTERN O'BRIEN...NORTHERN BUENA VISTA AND SOUTHERN CLAY
COUNTIES WILL EXPIRE AT 1100 PM CDT...
                
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 WILL BE ALLOWED TO EXPIRE.  HOWEVER GUSTY WINDS
OF 40 TO 45 MPH ARE STILL POSSIBLE WITH THIS THUNDERSTORM.

LAT...LON 4283 9550 4309 9549 4309 9497 4283 9497
TIME...MOT...LOC 0353Z 332DEG 15KT 4294 9523 

$$

MJF

The office that day

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

Issued	Product	Office	Counties	Lasted
Jun 10, 7:24 PM CDT	Severe Thunderstorm Warning	FSD	Osceola	36 min
Jun 10, 7:33 PM CDT	Severe Thunderstorm Warning	FSD	Dickinson	42 min
Jun 10, 8:15 PM CDT	Severe Thunderstorm Warning	FSD	Clay, Dickinson	45 min
Jun 10, 9:00 PM CDT	Severe Thunderstorm Warning	FSD	Clay, Dickinson, O'Brien, Osceola	60 min
Jun 10, 10:03 PM CDT	Severe Thunderstorm Warning	FSD	O'Brien, Osceola, Sioux	42 min
Jun 10, 10:44 PM CDT	Severe Thunderstorm Warning	FSD	Cherokee, O'Brien, Sioux	46 min
Jun 10, 11:15 PM CDT	Severe Thunderstorm Warning	FSD	Cherokee, O'Brien, Plymouth, Sioux	45 min
Jun 10, 11:53 PM CDT	Severe Thunderstorm Warning	FSD	Cherokee, O'Brien, Plymouth, Sioux	16 min

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.