Alert archive / Nebraska / Severe Thunderstorm Warnings in 1989
Severe Thunderstorm Warning 4, NWS Sioux Falls, SD
NWS Sioux Falls, SD issued this severe thunderstorm warning at Apr 24, 1989, 11:49 PM CDT for Dakota County, Dixon County, Nebraska; Union County, South Dakota. It was in force for 56 min.
The area
The counties it named.
The facts
- Issued
- Apr 24, 1989, 11:49 PM CDT (04:49 UTC)
- Expired
- Apr 25, 1989, 12:45 AM CDT
- In force
- 56 min
- Issued by
- NWS Sioux Falls, SD
- Area
- Whole counties
Counties Dakota County, NE, Dixon County, NE, 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, 4.8 hours before the alert went out and 142 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
- 3573 m above ground
- 0-6 km bulk shear
- 23 kt
- 0-1 km storm-relative helicity
- 46 m²/s²
- 0-3 km storm-relative helicity
- 69 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 250451
SVRSUX
NEC043-051-SDC127-250545-
BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE SIOUX CITY IA
1149 PM CDT MON APR 24 1989
THE NATIONAL WEATHER SERVICE IN SIOUX CITY HAS ISSUED A
SEVERE THUNDERSTORM WARNING EFFECTIVE UNTIL 1245 AM CDT
FOR PEOPLE IN THE FOLLOWING COUNTIES...
IN NORTHEAST NEBRASKA
...DAKOTA...DIXON
IN SOUTHEAST SOUTH DAKOTA
...UNION
AT 1145 PM RADAR INDICATED SEVERE THUNDERSTORMS MOVING INTO UNION
COUNTY IN SOUTH DAKOTA, DIXION AND DAKOTA COUNTIES IN NEBRASKA.
REPORTS OF STRONG WINDS NEAR 60 MILES AN HOUR HAVE BEEN REPORTED WITH
THESE STORMS. THESES STORMS ARE MOVING NORTHEAST AT 50 MILES AN
HOUR.
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
SEVERE 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, Apr 24, 10:34 PM CDT, 1 hour 15 minutes before
SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE SIOUX CITY IA 1033 PM CDT MON APR 24 1989 ...VERY STRONG THUNDERSTORMS MOVING INTO THE SIOUXLAND AREA... AT 1020 PM...RADAR SHOWED A LINE OF STRONG THUNDERSTORMS LOCATED FROM 25 MILES EAST OF ONEIL NEBRASKA TO 20 MILES NORTHWEST OF COLUMBUS NEBRASKA. THIS LINE OF STORMS WAS MOVING EAST AT 35 MILES AN HOUR. THESE THUNDERSTORMS HAVE THE POTENTIAL FOR HEAVY RAIN SHOWERS... SMALL HAIL AND STRONG WIND GUSTS. RESIDENTS OF DIXON, DAKOTA AND THURSTON COUNTIES IN NEBRASKA SHOULD WATCH WEATHER CONDITIONS CLOSELY AND BE PREPARED TO GO TO A SAFE SHELTER IF SEVERE WEATHER DEVELOPES. THIS LINE OF STORMS SHOULD ENTER THE ABOVE COUNTIES BY 1130 PM. SHOULD SEVERE WEATHER BE OBSERVED...PLEASE REPORT IT TO LOCAL LAW ENFORCEMENT OR CIVIL DEFENSE AGENCIES FOR RELAY TO THE NATIONAL WEATHER SERVICE. TANNER
Special weather statement, Apr 24, 11:46 PM CDT, 3 minutes before
SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE SIOUX FALLS SD 1145 PM CST MON APR 25 1989 ...INTENSE THUNDERSTORMS NEAR YANKTON... AT 1135 PM CDT RADAR SHOWED INTENSE THUNDERSTORMS NEAR YANKTON SOUTH DAKOTA MOVING EAST ABOUT 40 MPH. 50 TO 60 MPH WINDS WERE REPORTED 4 MILES NORTH OF YANKTON AT 1133 PM. VERY HEAVY RAIN AND 40 MPH WINDS WERE REPORTED 8 MILES WEST OF YANKTON AT 1140 PM. THESE THUNDERSTORMS WILL LIKELY PRODUCE DANGEROUS CLOUD TO GROUND LIGHTNING AND BRIEF PERIODS OF VERY HEAVY RAIN. HAIL AND STRONG WINDS ARE ALSO POSSIBLE WITH THESE THUNDERSTORMS. THE THUNDERSTORMS WILL MOVE INTO SOUTHERN CLAY COUNTY BY 1230 AM TUESDAY MORNING. RESIDENTS IN THE PATH OF THESE THUNDERSTORMS SHOULD BE PREPARED FOR THIS ADVERSE WEATHER AND MOVE TO A SAFE PLACE IF NECESSARY. BLOOM
The office that day
Everything else NWS Sioux Falls, SD issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Apr 24, 11:12 PM CDT | Severe Thunderstorm Warning | FSD | Thurston | 63 min |
Nearby
Severe Thunderstorm Warnings in Nebraska, 1989Severe Thunderstorm Warnings in South Dakota, 1989Every severe thunderstorm warning in 1989
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.