Alert archive / Iowa / Severe Thunderstorm Warnings in 1988
Severe Thunderstorm Warning 2, NWS Sioux Falls, SD
NWS Sioux Falls, SD issued this severe thunderstorm warning at May 7, 1988, 9:34 PM CDT for Woodbury County, Iowa. It was in force for 26 min.
The area
The counties it named.
The facts
- Issued
- May 7, 1988, 9:34 PM CDT (02:34 UTC)
- Expired
- May 7, 1988, 10:00 PM CDT
- In force
- 26 min
- Issued by
- NWS Sioux Falls, SD
- Area
- Whole counties
County Woodbury County, IA
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, 2.6 hours before the alert went out and 122 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
- 3512 m above ground
- 0-6 km bulk shear
- 48 kt
- 0-1 km storm-relative helicity
- 123 m²/s²
- 0-3 km storm-relative helicity
- 185 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 KSUX 080236
SVRSUX
IAC193-080330-
BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE SIOUX CITY IA
934 PM CDT SAT MAY 7 1988
THE NATIONAL WEATHER SERVICE HAS ISSUED A SEVERE THUNDERSTORM
WARNING EFFECTIVE UNTIL 1030 PM CDT FOR PEOPLE IN THE FOLLOWING
COUNTY
IN THE WEST CENTRAL PART OF IOWA
EASTERN WOODBURY
AT 925 PM CDT POLICE REPORTED HAIL THE SIZE OF HALF DOLLARS HAD
FALLEN IN SLOAN IOWA...22 MILES SOUTHEAST OF SIOUX CITY IOWA.
THE STORM THAT PRODUCED THE HAIL WAS MOVING NORTHEAST AT 40 MILES
AN HOUR.
PERSONS IN THE CITIES OF HOLLY SPRINGS AND OWEGO SHOULD TAKE COVER
NOW.
REMEMBER...SEVERE THUNDERSTORMS CAN PRODUCE DAMAGING WINDS IN EXCESS
OF 60 MPH...LARGE HAIL...DEADLY LIGHTNING...AND HEAVY RAINS THAT CAN
QUICKLY FLOOD LOW LYING AREAS. IF YOU ARE IN THE PATH OF THIS STORM
TAKE SHELTER IN A REINFORCED BUILDING IMMEDIATELY.
ASK THE NEAREST LAW ENFORCEMENT AGENCY TO RELAY YOUR REPORTS
OF YSEVERE WEATHER TO THE NATIONAL WEATHER SERVICE.
TANNERWhat 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, May 7, 4:07 PM CDT, 5 hours 27 minutes before
SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE SIOUX FALLS SD 408 PM CDT SAT MAY 7 1988 ...TORNADO WATCH NO LONGER IN EFFECT FOR SOUTH DAKOTA... THE TORNADO WATCH ISSUED AT 1156 AM CDT IS NO LONGER IN EFFECT FOR NORTHEAST SOUTH DAKOTA. THE SEVERE THREAT HAS MOVED NORTH AND EAST OF SOUTH DAKOTA. HOWEVER...THE TORNADO WATCH STILL REMAINS IN EFFECT UNTIL 7 PM CDT FOR PARTS OF WESTERN MINNESOTA...EASTERN NORTH DAKOTA...AND NORTHWEST IOWA. THEOPHILUS
Special weather statement, May 7, 7:40 PM CDT, 1 hour 54 minutes before
SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE SIOUX CITY IA 738 PM CDT SAT MAY 7 1988 ...INTENSE THUNDERSHOWERS MOVING INTO THE SIOUXLAND AREA... AT 735 PM CDT RADAR SHOWED A LINE OF INTENSE THUNDERSHOWERS LOCATED FROM LINCOLN NEBRASKA TO 5 EAST OF STORM LAKE IOWA. THE STRONGEST STORMS WERE ENTERING THE SOUTHERN PART OF MONONA COUNTY NEAR BLENCOE IOWA 45 MILES SOUTHEAST OF SIOUX CITY. THESE STORMS WERE MOVING NORTHEAST AT 40 MILES AN HOUR. PERSONS IN THE SOUTHERN PART OF MONONA COUNTY SHOULD BE ON THE LOOKOUT FOR THESES STORMS. THESE RAPIDLY MOVING THUNDERSHOWERS HAVE THE POTENTIAL TO PRODUCE SMALL HAIL, HEAVY RAIN...VERY STRONG WIND GUSTS...AND DEADLY LIGHTNING. TANNER
Special weather statement, May 7, 7:46 PM CDT, 1 hour 48 minutes before
SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE SIOUX CITY IA 738 PM CDT SAT MAY 7 1988 ...INTENSE THUNDERSHOWERS MOVING INTO THE SIOUXLAND AREA... AT 735 PM CDT RADAR SHOWED A LINE OF INTENSE THUNDERSHOWERS LOCATED FROM LINCOLN NEBRASKA TO 5 MILES EAST OF STORM LAKE IOWA. THE STRONGEST STORMS. WERE ENTERING THE SOUTHERN PART OF MONONA COUNTY NEAR BLENCOE IOWA 45 MILES SOUTHEAST OF SIOUX CITY. THESE STORMS WERE MOVING NORTHEAST AT 40 MILES AN HOUR. PERSONS IN THE SOUTHERN PART OF MONONA COUNTY SHOULD BE ON THE LOOKOUT FOR THESES STORMS. THESE RAPIDLY MOVING THUNDERSTORMS HAVE THE POTENTIAL TO PRODUCE SMALL HAIL, HEAVY RAIN...VERY STRONG WIND GUSTS...AND DEADLY LIGHTNING. TANNER
Special weather statement, May 7, 8:20 PM CDT, 1 hour 14 minutes before
SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE SIOUX CITY IA 815 PM CDT SAT MAY 7 1988 ...INTENSE THUNDERSHOWERS MOVING INTO MONONA COUNTY... AT 815 PM CDT RADAR SHOWED A LINE OF INTENSE THUNDERSHOWERS LOCATED FROM LINCOLN NEBRASKA TO NEAR FORT DODGE IOWA. STRONG THUNDERSTORMS WERE ENTERING THE SOUTHERN PART OF MONONA COUNTY NEAR BLENCOE IOWA 45 MILES SOUTHEAST OF SIOUX CITY. THESE STORMS WERE MOVING NORTHEAST AT 40 MILES AN HOUR. PERSONS IN THE SOUTHERN PART OF MONONA COUNTY SHOULD BE ON THE LOOKOUT FOR THESES STORMS. THESE RAPIDLY MOVING THUNDERSTORMS HAVE THE POTENTIAL TO PRODUCE SMALL HAIL...HEAVY RAIN...AND DEADLY LIGHTNING. TANNER
Special weather statement, May 7, 9:04 PM CDT, 30 minutes before
SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE SIOUX CITY IA 9 PM CDT SAT MAY 7 1988 ...STRONG THUNDERSHOWERS MOVING INTO SIOUXLAND AREA... AT 9 PM CDT RADAR SHOWED AN AREA OF STRONG THUNDERSTORMS MOVING INTO THE SIOUXLAND AREA. THE STRONGEST THUNDERSTORMS WERE MOVING INTO THE NORTHWEST PART OF MONONA COUNTY AND SOUTHWEST PART OF WOODBURY COUNTY. PERSONS IN THE TOWNS OF SALIX AND SLOAN SHOULD BE ON THE LOOKOUT FOR THESES STRONG STORMS. TH1ESE STORMS WERE MOVING NORTHEAST AT 40 MILES AN HOUR. THESE RAPIDLY MOVING THUNDERSTORMS HAVE THE POTENTIAL TO PRODUCE SMALL HAIL...HEAVY RAIN...AND DEADLY LIGHTNING. TANNER
The office that day
Everything else NWS Sioux Falls, SD issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| May 8, 12:04 AM CDT | Severe Thunderstorm Warning | FSD | O'Brien | 56 min |
| May 8, 12:07 AM CDT | Severe Thunderstorm Warning | FSD | Sioux | 38 min |
| May 8, 12:22 AM CDT | Severe Thunderstorm Warning | FSD | Lyon, Osceola, Sioux | 53 min |
| May 8, 12:44 AM CDT | Severe Thunderstorm Warning | FSD | Woodbury | 46 min |
Nearby
Severe Thunderstorm Warnings in Iowa, 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.