Alert archive / South Dakota / Severe Thunderstorm Warnings in 1992

Severe Thunderstorm Warning 86, NWS Sioux Falls, SD

August 9, 1992McCook County, Minnehaha County, South Dakota

NWS Sioux Falls, SD issued this severe thunderstorm warning at Aug 9, 1992, 9:46 PM CDT for McCook County, Minnehaha County, South Dakota. It was in force for 44 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: Aug 9, 1992, 9:46 PM CDT (02:46 UTC)
Expired: Aug 9, 1992, 10:30 PM CDT
In force: 44 min
Issued by: NWS Sioux Falls, SD
Area: Whole counties

Counties McCook County, SD, Minnehaha County, SD

What was reported inside it

Time	Report	Where	Remark
Aug 9, 10:05 PM CDT	Hail 0.75	Minnehaha, SD

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. Storm Data before 1996 records only tornadoes, thunderstorm wind and hail.

The nearest sounding before it

Aberdeen, SD (KHON), launched 00:00Z, 2.8 hours before the alert went out and 172 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: 1762 J/kg
Mixed-layer CIN: -208 J/kg
Mixed-layer LCL: 1484 m above ground
0-6 km bulk shear: 38 kt
0-1 km storm-relative helicity: 35 m²/s²
0-3 km storm-relative helicity: 223 m²/s²
Significant tornado parameter: 0.0
Supercell composite: -0.9

Open this sounding in Storm Lab

The text

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

000 
TTAA00 KFSD 100247
SVRFSD
SDC087-099-100330-
 
BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE SIOUX FALLS SD
946 PM CDT SUN AUG 9 1992
 
THE NATIONAL WEATHER SERVICE IN SIOUX FALLS HAS ISSUED A
SEVERE THUNDERSTORM WARNING EFFECTIVE UNTIL 1030 PM CDT
FOR PEOPLE IN THE FOLLOWING COUNTIESS...
 
IN SOUTHEAST SOUTH DAKOTA
 
   ...EASTERN MCCOOK COUNTY...SOUTHERN MINNEHAHA COUNTY
 
AT 944 PM CDT A SEVERE THUNDERSTORM WAS MOVING ACROSS NORTHERN MINNEHAHA
COUNTY. THE STORM WAS ALSO DEVELOPING OVER EASTERN MCCOOK COUNTY. THE
STORM WILL MOVE ACROSS SIOUX FALLS BY 10 PM CDT. STORMS WILL ALSO MOVE
OVER MONTROSE AND CANISTOTA BY 1010 PM CDT.
 
THIS IS A DANGEROUS STORM. TAKE COVER IMMEDIATELY.
 
A TORNADO WATCH IS ALSO IN EFFECT FOR THE WARNED AREA.
REMEMBER...SEVERE THUNDERSTORMS CAN AND OCCASIONALLY DO PRODUCE
TORNADOES WITH LITTLE OR NO ADVANCE WARNING SO BE ON THE LOOKOUT.
 
MENTZER

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

Special weather statement, Aug 9, 8:05 PM CDT, 1 hour 41 minutes before

IAZ020-021-031-032-043-NEZ094>096-SDZ066-100200-

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE SIOUX CITY IA
804 PM CDT SUN AUG 9 1992

...TORNADO WATCH FOR OBRIEN...PLYMOUTH...AND UNION COUNTIES UNTIL
2 AM MONDAY MORNING...

AT 800 PM CDT NO PRECIPITATION WAS LOCATED IN THE SIOUXLAND AREA.
THERE IS THE POSSIBILITY THAT SEVERE THUNDERSTORMS MAY DEVELOP IN THE
AREA THAT COULD PRODUCE LARGE HAIL...DAMAGING WINDS...AND TORNADOES.

STAY TUNED TO NOAA WEATHER RADIO OR YOUR FAVORITE NEWS MEDIA FOR
UPDATES CONCERNING THE SEVERE WEATHER THREAT.

IRELAND

Special weather statement, Aug 9, 9:01 PM CDT, 45 minutes before

IAZ020-021-031-032-043-NEZ094>096-SDZ066-100300-

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE SIOUX CITY IA
900 PM CDT SUN AUG 9 1992

...TORNADO WATCH FOR OBRIEN...PLYMOUTH...AND UNION COUNTIES UN

The office that day

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

Issued	Product	Office	Counties	Lasted
Aug 9, 7:41 PM CDT	Tornado Warning	FSD	Brookings	34 min
Aug 9, 8:02 PM CDT	Tornado Warning	FSD	Moody	43 min
Aug 9, 8:40 PM CDT	Tornado Warning	FSD	Moody	50 min
Aug 9, 8:50 PM CDT	Tornado Warning	FSD	Lake	25 min
Aug 9, 9:28 PM CDT	Severe Thunderstorm Warning	FSD	Minnehaha	47 min
Aug 9, 10:20 PM CDT	Severe Thunderstorm Warning	FSD	Lincoln, Turner	40 min
Aug 9, 10:38 PM CDT	Tornado Warning	FSD	Turner	37 min
Aug 9, 11:21 PM CDT	Severe Thunderstorm Warning	FSD	Clay, Yankton	54 min

Nearby

Severe Thunderstorm Warnings in South Dakota, 1992 Every severe thunderstorm warning in 1992

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.