Alert archive / Iowa / Severe Thunderstorm Warnings in 1996

Severe Thunderstorm Warning 86, NWS Sioux Falls, SD

June 20, 1996Cherokee County, Ida County, Iowa

NWS Sioux Falls, SD issued this severe thunderstorm warning at Jun 20, 1996, 6:09 PM CDT for Cherokee County, Ida County, Iowa. It was in force for 31 min. 1 report came from inside the area while it was in force.

The area

The counties it named, with what was reported inside it.

The facts

Issued: Jun 20, 1996, 6:09 PM CDT (23:09 UTC)
Expired: Jun 20, 1996, 6:40 PM CDT
In force: 31 min
Issued by: NWS Sioux Falls, SD
Area: Whole counties

Counties Cherokee County, IA, Ida County, IA

The radar

The Sioux Falls radar (KFSD), 148 km from the middle of the area, began a volume at 23:10 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 20, 6:10 PM CDT	Hail 1.75	Holstein, IA

NCEI Storm Data entries that began inside the alert's area while it was in force. Before 2003 the local storm report archive is thin, so this is the record of what happened rather than what was phoned in.

The nearest sounding before it

Omaha, NE (KOAX), launched 12:00Z, 11.2 hours before the alert went out and 153 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: 2885 J/kg
Mixed-layer CIN: -108 J/kg
Mixed-layer LCL: 717 m above ground
0-6 km bulk shear: 29 kt
0-1 km storm-relative helicity: 145 m²/s²
0-3 km storm-relative helicity: 147 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 10.7

Open this sounding in Storm Lab

The text

As transmitted, in the capitals the NWS used until 2016.

000 
TTAA00 KFSD 202309
SVRFSD
IAC035-093-202340-

BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE SIOUX FALLS SD
609 PM CDT THU JUN 20 1996

THE NATIONAL WEATHER SERVICE IN SIOUX FALLS SD HAS ISSUED A
SEVERE THUNDERSTORM WARNING EFFECTIVE UNTIL 640 PM CDT
FOR PEOPLE IN THE FOLLOWING LOCATION...

IN NORTHWEST IOWA

   ...EXTREME SOUTHERN CHEROKEE COUNTY
   ...EXTREME NORTHERN IDA COUNTY
 
AT 607 PM CDT...A SEVERE THUNDERSTORM WAS INDICATED BY SIOUX FALLS
DOPPLER RADAR 39 MILES EAST OF SIOUX CITY OR 4 MILES SOUTH OF
QUIMBY MOVING EAST AT 20 MPH. THIS STORM IS EXPECTED TO REMAIN IN
RURAL AREAS.

THIS STORM CAN BE EXPECTED IN THE VICINITY OF DIAMOND CENTER BY 620
PM AND HOLSTEIN BY 620 PM.
 
WHEN THUNDERSTORMS ARE OCCURRING...PEOPLE SHOULD MOVE INSIDE A
STRONG...REINFORCED BUILDING.  DO NOT STAND BY WINDOWS.  DO NOT USE
TELEPHONES UNLESS IT IS AN EMERGENCY OR ELECTRICAL APPLIANCES UNTIL
THE STORM HAS PASSED.  MOTORfISTS SHOULD AVOID FLOODED ROADWAYS.

FUHS

What forecasters said that day

The local office's own words before this severe thunderstorm warning went out, as it sent them, from the Iowa Environmental Mesonet's archive of National Weather Service text.

In the hours before

Local storm report, Jun 20, 1:59 PM CDT, 4 hours 10 minutes before

PRELIMINARY LOCAL STORM REPORT...PART 3
NATIONAL WEATHER SERVICE  SIOUX FALLS SD
207 AM CDT THU JUN 20 1996

TIME(CDT)  .....CITY LOCATION.....STATE   ...EVENT/REMARKS...
           ....COUNTY LOCATION....

0910 PM    HINTON                    IA   3.50 INCH HAIL
06/19/96   PLYMOUTH                       SOME 3.00 INCH HAIL

0950 PM    7 NW KINGSLEY             IA   1.75 INCH HAIL
06/19/96   PLYMOUTH

1001 PM    5 SW CHEROKEE             IA   0.88 INCH HAIL
06/19/96   CHEROKEE

1011 PM    3.5 N REMSEN              IA   WIND DAMAGE
06/19/96   PLYMOUTH                       POWER LINES DOWN AND TREE
                                          DAMAGE
1013 PM    CORRECTIONVILLE           IA   1.75 INCH HAIL
06/19/96   WOODBURY

1014 PM    2 SW CORRECTIONVILLE      IA   2.50 INCH HAIL
06/19/96   WOODBURY

900 PM     2 N HINTON                IA   2.75 INCH HAIL
06/19/96   PLYMOUTH                       DAMAGED CAR ON HIGHWAY 75

0838 PM    SIOUX CENTER              IA   1.00 INCH HAIL
06/19/96   SIOUX

1005 PM    6 W CHEROKEE              IA   1.75 INCH HAIL
06/19/96   CHEROKEE                       COVERING GROUND

1115 PM    WASHTA                    IA   1.75 INCH HAIL
06/19/96   CHEROKEE                       MOSTLY 0.50 INCH HAIL

1142 PM    10 W LEMARS               IA   0.75 INCH HAIL
06/19/96   PLYMOUTH

1208 AM    1 N MOVILLE               IA   1.75 INCH HAIL
06/20/96   WOODBURY

1222 AM    PIERSON                   IA   0.75 INCH HAIL
06/20/96   WOODBURY

1229 AM    3 NW ANTHON               IA   1.75 INCH HAIL
06/20/96   WOODBURY                       MOSTLY 0.50 INCH

1235 AM    5 S ANTHON                IA   1.75 INCH HAIL
06/20/96   WOODBURY                       COVERING GROUND AND 50
                                          MPH WINDS

1202 AM    HOLSTEIN                  IA   1.50 INCH HAIL
06/20/96   IDA

1205 AM    KINGSLEY                  IA   1.75 INCH HAIL
06/20/96   PLYMOUTH                       58 MPH WINDS

1212 AM    KINGSLEY                  IA   1.75 INCH HAIL
06/20/96   PLYMOUTH                       15 MINUTE DURATION

1220 AM    CLIMBING HILL             IA   61 MPH WIND GUST
06/20/96   WOODBURY    (                   SPOTTER REPORT
END

The office that day

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

Issued	Product	Office	Counties	Lasted
Jun 19, 7:05 PM CDT	Severe Thunderstorm Warning	FSD	Osceola	45 min
Jun 19, 7:44 PM CDT	Severe Thunderstorm Warning	FSD	Sioux	31 min
Jun 19, 8:16 PM CDT	Severe Thunderstorm Warning	FSD	Sioux	44 min
Jun 19, 9:00 PM CDT	Severe Thunderstorm Warning	FSD	O'Brien, Sioux	35 min
Jun 19, 9:18 PM CDT	Severe Thunderstorm Warning	FSD	Plymouth	32 min
Jun 19, 9:26 PM CDT	Severe Thunderstorm Warning	FSD	Cherokee	44 min
Jun 19, 9:49 PM CDT	Severe Thunderstorm Warning	FSD	Woodbury	31 min
Jun 19, 9:50 PM CDT	Severe Thunderstorm Warning	FSD	Plymouth	35 min
Jun 19, 10:09 PM CDT	Severe Thunderstorm Warning	FSD	Cherokee, Ida	31 min
Jun 19, 10:22 PM CDT	Severe Thunderstorm Warning	FSD	Ida, Woodbury	33 min
Jun 19, 10:54 PM CDT	Severe Thunderstorm Warning	FSD	Ida	31 min
Jun 19, 11:19 PM CDT	Severe Thunderstorm Warning	FSD	Ida, Woodbury	31 min
Jun 19, 11:50 PM CDT	Severe Thunderstorm Warning	FSD	Plymouth	30 min
Jun 20, 12:04 AM CDT	Severe Thunderstorm Warning	FSD	Woodbury	46 min
Jun 20, 12:20 AM CDT	Severe Thunderstorm Warning	FSD	Plymouth	15 min
Jun 20, 12:52 AM CDT	Severe Thunderstorm Warning	FSD	Woodbury	23 min
Jun 20, 1:26 AM CDT	Flash Flood Warning	FSD	Ida	3 hr
Jun 20, 8:32 AM CDT	Flash Flood Warning	FSD	Ida	5 hr
Jun 20, 2:13 PM CDT	Severe Thunderstorm Warning	FSD	Woodbury	32 min
Jun 20, 2:24 PM CDT	Severe Thunderstorm Warning	FSD	Dickinson	46 min
Jun 20, 2:45 PM CDT	Severe Thunderstorm Warning	FSD	Woodbury	30 min
Jun 20, 3:04 PM CDT	Severe Thunderstorm Warning	FSD	Plymouth	46 min
Jun 20, 3:18 PM CDT	Severe Thunderstorm Warning	FSD	Woodbury	47 min
Jun 20, 3:51 PM CDT	Severe Thunderstorm Warning	FSD	Plymouth	34 min
Jun 20, 3:55 PM CDT	Severe Thunderstorm Warning	FSD	Cherokee	35 min
Jun 20, 4:37 PM CDT	Severe Thunderstorm Warning	FSD	Woodbury	33 min

Nearby

Severe Thunderstorm Warnings in Iowa, 1996 Every severe thunderstorm warning in 1996

Sources

The product and its follow-ups from the Iowa Environmental Mesonet's archive of National Weather Service and Storm Prediction Center text; verification from NCEI's Storm Data; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.