Alert archive / South Dakota / Severe Thunderstorm Warnings in 1988
Severe Thunderstorm Warning 48, NWS Sioux Falls, SD
NWS Sioux Falls, SD issued this severe thunderstorm warning at Aug 22, 1988, 12:25 AM CDT for Union County, South Dakota. It was in force for 65 min.
The area
The counties it named.
The facts
- Issued
- Aug 22, 1988, 12:25 AM CDT (05:25 UTC)
- Expired
- Aug 22, 1988, 1:30 AM CDT
- In force
- 65 min
- Issued by
- NWS Sioux Falls, SD
- Area
- Whole counties
County Union 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
Omaha, NE (KOAX), launched 00:00Z, 5.4 hours before the alert went out and 170 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
- 0 J/kg
- Mixed-layer CIN
- No buoyant parcel
- Mixed-layer LCL
- 3596 m above ground
- 0-6 km bulk shear
- 28 kt
- 0-1 km storm-relative helicity
- 12 m²/s²
- 0-3 km storm-relative helicity
- 143 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
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, Aug 21, 10:13 PM CDT, 2 hours 12 minutes before
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</html>Special weather statement, Aug 21, 10:43 PM CDT, 1 hour 42 minutes before
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</html>Special weather statement, Aug 21, 10:56 PM CDT, 1 hour 29 minutes before
SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE SIOUX FALLS SD 1100 PM CDT SUN AUG 21 1988 ...SEVERE THUNDERSTORM WATCH NUMBER 409 HAS EXPIRED... THE SEVERE THUNDERSTORM WATCH NUMBER 409 WHICH ORIGINALLY COVERED PARTS OF SOUTHEAST SOUTH DAKOTA...SOUTHWEST MINNESOTA...AND NORTHWEST IOWA EXPIRED AT 1100 PM CDT. THERE IS NO LONGER A THREAT OF SEVERE WEATHER IN THIS AREA. ADDITIONAL ROUNDS OF SCATTERED SHOWERS AND THUNDERSTORMS ARE LIKELY TONIGHT ACROSS THE LOCAL TRI STATE AREA SURROUNDING SIOUX FALLS. BRIEF HEAVY RAINS WITH SOME OF THE THUNDERSTORMS MAY RESULT IN SOME TEMPORARY URBAN STREET FLOODING DUE TO THE INTENSITY OF THE TROPICAL DOWNPOURS. RAINFALL AMOUNTS IN THE SIOUX FALLS AREA RANGE FROM 1.50 TO 3.00 INCHES ...AND THERE MAY BE SOME HEAVIER AMOUNTS IN THE LOCAL TRI STATE AREA. IF YOU HAVE A RELIABLE RAINGAGE...THEN RELAY YOUR RAINFALL TOTAL TO THE NATIONAL WEATHER SERVICE FORECAST OFFICE AT SIOUX FALLS. KAPELA
Special weather statement, Aug 21, 11:11 PM CDT, 1 hour 14 minutes before
SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE SIOUX CITY IA 1107 PM CDT SUN AUG 21 1988 ...THE SEVERE THUNDERSTORM WATCH FOR SOUTHEAST SOUTH DAKOTA AND NORTHWEST IOWA HAS EXPIRED.... THE SEVERE THUNDERSTORM WATCH FOR SOUTHEAST SOUTH DAKOTA AND NORTHWEST IOWA HAS EXPIRED. ALTHOUGH THE WATCH HAS EXPIRED..AT 1055 PM RADAR INDICATED THAT AN AREA OF STRONG THUNDERSTORMS HAD REDEVLOPED IN SOUTHEAST SOUTH DAKOTA. THE STORMS ARE LOCATED FROM YANKTON SOUTH DAKOTA...55 MILES NORTHWEST OF SIOUX CITY TO HAWARDEN IOWA... 37 MILES NORTH OF SIOUX CITY. HEAVY RAIN...DANGEROUS LIGHTING AND 45 TO 50 MPH WINDS CAN BE EXPECTED WITH THESE STORMS AS THEY MOVE EAST AT 25 MILES AN HOUR. TANNER
Special weather statement, Aug 21, 11:39 PM CDT, 46 minutes before
SPECIAL WEATHER STATEMENT AND RADAR SUMMARY NATIONAL WEATHER SERVICE HURON SD 1140 PM CDT SUN AUG 21 1988 AT 1130 PM CDT...SCATTERED SHOWERS AND THUNDERSTORMS CONTINUED ACROSS SOUTHEAST SOUTH DAKOTA...SOUTHWEST MINNESOTA AND NORTHWEST IOWA. THE SHOWERS AND THUNDERSTORMS OVER SOUTH DAKOTA WERE SOUTH AND EAST OF A LINE FROM BROOKINGS TO MITCHELL TO YANKTON. MOVEMENT WAS EAST AT 30 MILES AN HOUR. RAINFALL AMOUNTS OVER PARTS OF SOUTHEAST SOUTH DAKOTA HAVE VARIED FROM 1 TO 3 INCHES OVER THE LAST SEVERAL HOURS AND HAVE CAUSED SOME STREET FLOODING IN THE SIOUX FALLS AREA. ADDITIONAL ROUNDS OF SHOWERS AND THUNDERSTORMS...WITH HEAVY RAIN...ARE LIKELY LATER TONIGHT OVER SOUTHEAST SOUTH DAKO6TA...NORTHWEST IOWA...AND SOUTHWEST MINNESOTA. FLOODING OF STREETS AND ROADSIDE DITCHES IS LIKELY LATER TONIGHT... ALONG WITH DANGEROUS LIGHTNING AND PEA SIZE HAIL. STOREY
Special weather statement, Aug 21, 11:48 PM CDT, 37 minutes before
SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE SIOUX CITY IA 1145 PM CDT SUN AUG 21 1988 ...STRONG THUNDERSTORMS WITH VERY HEAVY RAIN MOVING THROUGH SOUTHEAST SOUTH DAKOTA AND NORTHWEST IOWA... AT 1140 PM CDT A 30 MILE WIDE BAND OF STRONG THUNDERSTORMS WITH VERY HEAVY RAIN WAS LOCATED NORTH OF A LINE FROM NEAR BERESFORD SOUTH DAKOTA IN NORTHWEST UNION COUNTY...ABOUT 44 MILES NORTHWEST OF SIOUX CITY TO ABOUT 30 MILES NORTH OF SIOUX CITY NEAR HAWARDEN IOWA TO CHEROKEE IOWA WHICH IS ABOUT 45 MILES NORTHEAST OF SIOUX CITY. THESE THUNDERSTORMS WERE MOVING EAST AT 25 MPH AND WERE PASSING OVER AREAS THAT ALREADY RECIEVED HEAVY RAIN TONIGHT. FLOODING OF STREETS AND ROADSIDE DITC,HES IS LIKELY WITH THESE STORMS AS WELL AS DANGEROUS LIGHTNING AND WIND GUSTS UP TO 40 MPH. PHILLIPS
The office that day
Everything else NWS Sioux Falls, SD issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Aug 21, 8:17 PM CDT | Severe Thunderstorm Warning | FSD | Lincoln, Turner | 58 min |
| Aug 22, 12:16 AM CDT | Severe Thunderstorm Warning | FSD | Clay | 29 min |
| Aug 21, 11:56 PM CDT | Severe Thunderstorm Warning | FSD | Sioux | 64 min |
| Aug 22, 12:56 AM CDT | Severe Thunderstorm Warning | FSD | Cherokee, O'Brien, Plymouth | 64 min |
| Aug 22, 2:04 AM CDT | Severe Thunderstorm Warning | FSD | Woodbury | 56 min |
| Aug 22, 2:28 AM CDT | Severe Thunderstorm Warning | FSD | Monona | 62 min |
| Aug 22, 3:07 AM CDT | Severe Thunderstorm Warning | FSD | Ida, Woodbury | 68 min |
| Aug 21, 7:20 PM CDT | Severe Thunderstorm Warning | FSD | Lincoln, Lyon | 55 min |
Nearby
Severe Thunderstorm Warnings in South Dakota, 1988Every severe thunderstorm warning in 1988
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.