Alert archive / South Dakota / Severe Thunderstorm Warnings in 1990
Severe Thunderstorm Warning 125, NWS Sioux Falls, SD
NWS Sioux Falls, SD issued this severe thunderstorm warning at Jul 28, 1990, 7:26 PM CDT for Bon Homme County, South Dakota. It was in force for 34 min.
The area
The counties it named.
The facts
- Issued
- Jul 28, 1990, 7:26 PM CDT (00:26 UTC)
- Expired
- Jul 28, 1990, 8:00 PM CDT
- In force
- 34 min
- Issued by
- NWS Sioux Falls, SD
- Area
- Whole counties
County Bon Homme County, SD
The radar
The WSR-88D network and its archive begin in 1991, so there is no radar volume for this alert.
The nearest sounding before it
Aberdeen, SD (KHON), launched 00:00Z, 0.4 hours before the alert went out and 217 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.
- Mixed-layer CAPE
- 388 J/kg
- Mixed-layer CIN
- -79 J/kg
- Mixed-layer LCL
- 1657 m above ground
- 0-6 km bulk shear
- 10 kt
- 0-1 km storm-relative helicity
- -14 m²/s²
- 0-3 km storm-relative helicity
- -14 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted, in the capitals the NWS used until 2016.
000
TTAA00 KFSD 290028
SVRFSD
SDC009-290100-
BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE SIOUX FALLS SD
726 PM CDT JUL 28 1990
THE NATIONAL WEATHER SERVICE IN SIOUX FALLS HAS ISSUED A
SEVERE THUNDERSTORM WARNING EFFECTIVE UNTIL 800 PM CDT
FOR PEOPLE IN THE FOLLOWING COUNTY...
IN SOUTHEAST SOUTH DAKOTA
...WESTERN BON-HOMME
AT 720 PM CDT RADAR INDICATED A SEVERE THUNDERSTORM OVER EXTREME
WESTERN BON HOMME COUNTY SOUTH DAKOTA MOVING EAST AT 15 MPH. THIS
STORM CONTAINS LARGE HAIL AND VERY HEAVY RAINS THAT MAY FLOOD LOW
LYING AREAS IN A SHORT PERIOD OF TIME.
THIS WARNING INCLUDES THE ADJACENT WATERS OF THE MISSOURI RIVER.
IF YOU ARE IN THE PATH OF THIS STORM...YOU SHOULD GET TO A
REINFORCED SHELTER. A SEVERE THUNDERSTORM PRODUCES WINDS IN EXCESS
OF 60 MPH...HAIL 3/4 INCH OR LARGER...DEADLY LIGHTNING...AND HEAVY
RAIN THAT CAN QUICKLY FLOOD A LOW LYING AREA.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 28, 5:46 PM CDT, 1 hour 40 minutes before
SDZ017-018-020-MNZ017-IA001-004-290000- SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE SIOUX FALLS SD 545 PM CDT SAT JUL 28 1990 ...THUNDERSTORMS WITH VERY HEAVY RAIN IN PARTS OF SOUTHEAST SOUTH DAKOTA...SOUTHWEST MINNESOTA AND NORTHWEST IOWA... AT 540 PM CDT AN AREA OF THUNDERSTORMS WITH VERY HEAVY RAIN EXTENDED FROM 50 MILES SOUTHEAST OF SIOUX FALLS NEAR SHELDON IOWA TO 80 MILES EAST OF SIOUX FALLS NEAR MOUNTAIN LAKE MINNESOTA. OTHER THUNDERSTORMS WITH VERY HEAVY RAIN EXTENDED EAST OF A LINE FROM 20 MILES WEST OF YANKTON NEAR TYNDALL TO 20 MILES WEST OF SIOUX FALLS NEAR HUMBOLDT. THESE THUNDERSTORMS ARE CAPABLE OF PRODUCING SMALL HAIL...GUSTY WINDS ...AND HEAVY RAINS THAT CAN FLOOD LOW LYING AREAS AS THEY MOVE EAST AT 15 MILES AN HOUR. BERG
Special weather statement, Jul 28, 6:04 PM CDT, 1 hour 22 minutes before
IAZ001-004-005-290010- SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE SIOUX CITY IA 604 PM CDT SAT JUL 28 1990 AT 6 PM SHOWERS AND THUNDERSTORMS COVERED MOST OF WESTERN NEBRASKA SOUTHEAST SOUTH DAKOTA AND NORTHEAST NEBRASKA. THE HEAVIEST RAIN WAS IN AN AREA BOUNDED BY MARKUS...MAPLETON AND SLOAN IOWA TO ELK POINT SOUTH DAKOTA BACK TO MARKUS. OTHER SMALLER AREAS OF HEAVY RAIN WERE SCATTERED THROUGHOUT THE AREA. THE RAIN EXTENDED TO 70 MILES WEST OF SIOUX CITY AND WAS MOVING EAST AT 20 MILES AN HOUR. THE THUNDERSTORMS COULD PRODUCE SMALL HAIL...DANGEROUS LIGHTNING... GUSTY WIND AND HEAVY RAIN THAT CAN QUICKLY FLOOD LOW LYING AREAS. QUINN
Special weather statement, Jul 28, 6:07 PM CDT, 1 hour 19 minutes before
IAZ001-004-005-290010- SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE SIOUX CITY IA 604 PM CDT SAT JUL 28 1990 AT 6 PM SHOWERS AND THUNDERSTORMS COVERED MOST OF WESTERN IOWA... SOUTHEAST SOUTH DAKOTA AND NORTHEAST NEBRASKA. THE HEAVIEST RAIN WAS IN AN AREA BOUNDED BY MARKUS...MAPLETON AND SLOAN IOWA TO ELK POINT SOUTH DAKOTA BACK TO MARKUS. OTHER SMALLER AREAS OF HEAVY RAIN WERE SCATTERED THROUGHOUT THE AREA. THE RAIN EXTENDED TO 70 MILES WEST OF SIOUX CITY AND WAS MOVING EAST AT 20 MILES AN HOUR. THE THUNDERSTORMS COULD PRODUCE SMALL HAIL...DANGEROUS LIGHTNING... GUSTY WIND AND HEAVY RAIN THAT CAN QUICKLY FLOOD LOW LYING AREAS. QUINN
Special weather statement, Jul 28, 6:36 PM CDT, 50 minutes before
IAZ001-004-005-290030- SPECIAL WEATHER STATEMENT AND WEATHER UPDATE FOR SIOUX CITY AND VICINITY NATIONAL WEATHER SERVICE SIOUX CITY IA 634 PM CDT SAT JUL 28 1990 AT 630 PM SHOWERS AND THUNDERSTORMS WERE GENERALLY NORTH OF A LINE FROM NEAR NORFOLK THROUGH DAKOTA CITY NEBRASKA TO CUSHING IOWA. THE HEAVIEST RAIN WAS IN AN AREA BOUNDED BY LAWTON...AKRON...AND MARCUS IOWA. OTHER SMALLER AREAS OF HEAVY RAIN WERE WERE IN NORTHEAST NEBRASKA. THE RAIN WAS MOVING NORTHEAST AT 25 MILES AN HOUR. THE THUNDERSTORMS COULD PRODUCE SMALL HAIL...DANGEROUS LIGHTNING... GUSTY WIND AND HEAVY RAIN THAT CAN QUICKLY FLOOD LOW LYING AREAS. QUINN
Special weather statement, Jul 28, 6:46 PM CDT, 40 minutes before
SDZ018-020-MNZ017-IA001-004-290000- SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE SIOUX FALLS SD 645 PM CDT SAT JUL 28 1990 ...THUNDERSTORMS WITH VERY HEAVY RAIN IN PARTS OF SOUTHEAST SOUTH DAKOTA...SOUTHWEST MINNESOTA AND NORTHWEST IOWA... AT 640 PM CDT AN AREA OF THUNDERSTORMS...SOME WITH VERY HEAVY RAIN... EXTENDED SOUTHEST OF A LINE FROM 20 MILES WEST OF YANKTON NEAR TYNDALL TO 75 MILES NORTHEAST OF SIOUX FALLS NEAR SANBORN MINNESOTA. Q THE STRONGEST STORMS WERE 15 MILES SOUTHEAST OF SIOUX FALLS NEAR WORTHING...JUST WEST OF YANKTON AND 40 MILES EAST OF SIOUX FALLS BETWEEN WORTHINGTON MINNESOTA AND ASHTON IOWA. MOVEMENT WAS EAST AT 15 MILES AN HOUR. BERG
Special weather statement, Jul 28, 7:14 PM CDT, 12 minutes before
IAZ001-004-005-290110- SPECIAL WEATHER STATEMENT AND WEATHER UPDATE FOR SIOUX CITY AND VICINITY NATIONAL WEATHER SERVICE SIOUX CITY IA 714 PM CDT SAT JUL 28 1990 AT 710 PM SHOWERS AND THUNDERSTORMS WERE GENERALLY NORTH OF A LINE FROM NEAR NORFOLK THROUGH SIOUX CITY TO AURELIA IOWA. THE HEAVIEST RAIN WAS BETWEEN CHEROKEE AND PRIMGHAR IOWA. SCATTERED LIGHT SHOWERS EXTENDED TO 75 MILES WEST OF SIOUX CITY AND WERE MOVING NORTHEAST AT 25 MILES AN HOUR. THE THUNDERSTORMS COULD PRODUCE SMALL HAIL...DANGEROUS LIGHTNING... GUSTY WIND AND HEAVY RAIN THAT CAN QUICKLY FLOOD LOW LYING AREAS. QUINN
Nearby
Severe Thunderstorm Warnings in South Dakota, 1990Every severe thunderstorm warning in 1990
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.