Alert archive / South Dakota / Severe Thunderstorm Warnings in 1993

Severe Thunderstorm Warning 46, NWS Sioux Falls, SD

July 3, 1993Hutchinson County, South Dakota

NWS Sioux Falls, SD issued this severe thunderstorm warning at Jul 3, 1993, 7:51 PM CDT for Hutchinson County, South Dakota. It was in force for 39 min.

The area

The counties it named.

The facts

Issued: Jul 3, 1993, 7:51 PM CDT (00:51 UTC)
Expired: Jul 3, 1993, 8:30 PM CDT
In force: 39 min
Issued by: NWS Sioux Falls, SD
Area: Whole counties

County Hutchinson County, SD

The nearest sounding before it

Aberdeen, SD (KHON), launched 00:00Z, 0.9 hours before the alert went out and 181 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: 4540 J/kg
Mixed-layer CIN: -10 J/kg
Mixed-layer LCL: 1223 m above ground
0-6 km bulk shear: 46 kt
0-1 km storm-relative helicity: 127 m²/s²
0-3 km storm-relative helicity: 102 m²/s²
Significant tornado parameter: 1.9
Supercell composite: 12.9

Open this sounding in Storm Lab

The text

The text of this product is not in the archive. The NWS text archive before 2002 is incomplete.

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, Jul 3, 4:59 PM CDT, 2 hours 52 minutes before

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Special weather statement, Jul 3, 6:22 PM CDT, 1 hour 29 minutes before

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Special weather statement, Jul 3, 6:37 PM CDT, 1 hour 14 minutes before

IAZ013-020-021-031-032-043-NEZ094>096-SDZ066-040215-

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE SIOUX CITY IA
637 PM CDT SAT JUL 3 1993

...STRONG THUNDERSTORMS CAN BE EXPECTED LATER THIS EVENING...

A LINE OF STRONG THUNDERSTORMS MOVING INTO NORTHEAST NEBRASKA IS
EXPECTED TO REACH THE SIOUX CITY AREA AFTER 9 PM. HOWEVER...ISOLATED
THUNDERSTORMS MAY DEVELOP AHEAD OF THIS LINE DURING THE EARLY EVENING
HOURS.

A TORNADO WATCH HAS BEEN ISSUED FOR UNION COUNTY SOUTH DAKOTA AND
O BRIEN COUNTY IOWA UNTIL 1 AM CDT. THIS IS A GOOD TIME FOR PEOPLE
ACROSS THE ENTIRE SIOUX CITY AREA TO REVIEW TORNADO AND SEVERE
THUNDERSTORM SAFETY RULES. ALSO KEEP ABREAST OF THE LATEST WEATHER
DEVELOPMENTS.

SQI

Special weather statement, Jul 3, 6:37 PM CDT, 1 hour 14 minutes before

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Special weather statement, Jul 3, 6:55 PM CDT, 56 minutes before

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Special weather statement, Jul 3, 6:57 PM CDT, 54 minutes before

SDZ010-011-012-032025-

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE HURON SD
655 PM CDT SAT JUL 3 1993

...A FLASH FLOOD WATCH IS IN EFFECT FOR EAST CENTRAL SOUTH DAKOTA...
...TORNADO WATCH FOR CENTRAL SOUTH DAKOTA UNTIL 1000 PM CDT...
...TORNADO WATCH FOR EASTERN SOUTH DAKOTA UNTIL 100 AM CDT...

THE STRONG THUNDERSTORMS MOVING ACROSS NORTHERN HYDE AND HAND COUNTIES
CONTINUE TO APPEAR SEVERE.

THE WARNINGS FOR NORTHERN HYDE AND HAND COUNTIES WILL CONTINUE UNTIL
EXPIRATION.  NO SEVERE WEATHER HAS YET BEEN REPORTED.

PERSONS IN NORTHERN HYDE AND HAND COUNTIES SHOULD CONTINUE TO WATCH FOR
RAPIDLY CHANGING WEATHER CONDITIONS AND BE PREPARED TO SEEK SHELTER.

STOREY

The office that day

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

Issued	Product	Office	Counties	Lasted
Jul 3, 8:31 PM CDT	Severe Thunderstorm Warning	FSD	Turner	44 min
Jul 3, 8:44 PM CDT	Severe Thunderstorm Warning	FSD	McCook	61 min
Jul 3, 9:03 PM CDT	Severe Thunderstorm Warning	FSD	Minnehaha	27 min
Jul 3, 9:17 PM CDT	Severe Thunderstorm Warning	FSD	Lincoln, Turner	33 min
Jul 3, 9:32 PM CDT	Severe Thunderstorm Warning	FSD	Minnehaha, Moody	28 min
Jul 3, 11:51 PM CDT	Severe Thunderstorm Warning	FSD	Jackson	39 min

Nearby

Severe Thunderstorm Warnings in South Dakota, 1993 Every severe thunderstorm warning in 1993

Sources

The product and its follow-ups from the Iowa Environmental Mesonet's archive of National Weather Service and Storm Prediction Center text; the sounding from the Mesonet's radiosonde archive.