Alert archive / Iowa / Severe Thunderstorm Warnings in 1992
Severe Thunderstorm Warning 73, NWS Sioux Falls, SD
NWS Sioux Falls, SD issued this severe thunderstorm warning at Jul 9, 1992, 7:25 PM CDT for Cherokee County, Iowa. It was in force for 41 min.
The area
The counties it named.
The facts
- Issued
- Jul 9, 1992, 7:25 PM CDT (00:25 UTC)
- Expired
- Jul 9, 1992, 8:06 PM CDT
- In force
- 41 min
- Issued by
- NWS Sioux Falls, SD
- Area
- Whole counties
County Cherokee County, IA
The nearest sounding before it
Omaha, NE (KOVN), launched 00:00Z, 0.4 hours before the alert went out and 169 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
- NaN m above ground
- 0-6 km bulk shear
- 52 kt
- 0-1 km storm-relative helicity
- 225 m²/s²
- 0-3 km storm-relative helicity
- 230 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 2.6
The text
As transmitted, in the capitals the NWS used until 2016.
000
TTAA00 KSUX 100025
SVRSUX
IAC035-100115-
BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE SIOUX CITY IA
725 PM CDT THU JUL 9 1992
THE NATIONAL WEATHER SERVICE HAS ISSUED A SEVERE THUNDERSTORM
WARNING EFFECTIVE UNTIL 815 PM CDT FOR PEOPLE IN THE FOLLOWING
COUNTY
IN THE NORTHWEST PART OF IOWA
CHEROKEE
AT 725 PM CDT RADAR INDICATED A SVERE THUNDERSTORM 10 MILES
NORTHWEST OF CHEROKEE IOWA OR 45 MILES NORTHEAST OF SIOUX CITY.
MOVEMENT WAS SOUTHEAST AT 35 MILES AN HOUR.
THIS STORM WILL PASS THROUGH CHEROKEE IOWA BY 745 PM. TAKE SHELTER
NOW.
A TORNADO WATCH IS ALSO IN EFFECT FOR THE WARNED AREA. REMEMBER...
SEVERE THUNDERSTORMS CAN AND OCCASIONALLY DO PRODUCE TORNADOES
WITH LITTLE OR NO ADVANCE WARNING...SO BE ON THE LOOKOUT. IF A
TORNADO IS SIGHTED GO TO A BASEMENT SHELTER OR INTERIOR ROOM ON
LOWEST FLOOR. ABANDON CARS AND MOBILE HOMES FOR A REINFORCED
BUILDING.
ASK THE NEAREST LAW ENFORCEMENT AGENCY TO RELAY YOUR REPORTS
OF SEVERE WEATHER TO THE NATIONAL WEATHER SERVICE.
DROZDWhat 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 9, 6:01 PM CDT, 1 hour 24 minutes before
IAZ013-020-021-031-032-043-NEZ094>096-SDZ066-092335- SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE SIOUX CITY IA 601 PM CDT THU JUL 9 1992 ...A TORNADO WATCH IS IN EFFECT FOR THE SIOUXLAND AREA UNTIL 9PM... AT 6 PM A THUNDERSTORM PRODUCING HEAVY RAIN AND POSSIBLY SMALL HAIL WAS 40 MILES NORTHWEST OF SIOUX CITY...NEAR ALCESTER SOUTH DAKOTA. MOVEMENT WAS NORTHEAST AT 30 MILES AN HOUR. THIS STORM WILL MOVE NORTHEAST OUT OF THE ALCESTER AREA BYx 630 PM AND TRACK ALONG THE ROCK RIVER OF EXTREME NORTHWEST IOWA. OTHER THUNDERSTORMS OVER NORTHEAST NEBRASKA WILL ENTER THE WEST PART OF THE SIOUXLAND AREA BY 7 PM. DROZD
Special weather statement, Jul 9, 6:19 PM CDT, 1 hour 6 minutes before
SDZ012-018>-020-MNZ017-IAZ002-100015- SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE SIOUX FALLS SD 617 PM CDT THU JUL 9 1992 ...A TORNADO WATCH IS IN EFFECT UNTIL 9 PM CDT FOR SOUTHEAST SOUTH DAKOTA...SOUTHWEST MINNESOTA...AND NORTHWEST IOWA... ...A SEVERE THUNDERSTORM WATCH IS IN EFFECT UNTIL 9 PM CDT FOR PORTIONS OF SOUTH CENTRAL SOUTH DAKOTA... AT 600 PM CDT...RADAR INDICATED THUNDERSTORMS WITH VERY HEAVY RAINS MOVING THROUGH SOUTHEAST SOUTH DAKOTA...SOUTHWEST MINNESOTA...AND NORTHWEST IOWA. THE HEAVIEST STORMS WERE LOCATED IN SOUTHWEST HUTCHINSON COUNTY OF SOUTH DAKOTA. ANOTHER THUNDERSTORM WITH VERY HEAVY RAINS WAS MOVING ACROSS LAKE FRANCIS CASE TO THE WEST OF PLATTE. THESE STORMS ARE MOVING NORTHEAST AT 30 MPH. THE GENERAL AREA OF STORMS EXTENDED EAST OF A LINE FROM BROOKINGS TO YANKTON SOUTH DAKOTA. THE RAIN AREA EXTENDED AS FAR EAST AS JACKSON AND REDWOOD FALLS MINNESOTA. THE AREA WAS MOVING NORTHEAST AT 30 MPH. < A BRIEF RESPITE FROM THE RAIN WILL BE MOVING THROUGH DURING THE NEXT COUPLE OF HOURS. HOWEVER...MORE THUNDERSTORMS ARE DEVELOPING IN NORTHEASTERN NEBRASKA. THESE STORMS WERE MOVING NORTHEAST AND WILL BE MOVING INTO EXTREME SOUTHEAST SOUTH DAKOTA...AFFECTING POINTS ALONG THE MISSOURI RIVER...BY 700 PM. AS THE STORMS CONTINUE TO MOVE THROUGH...FLOODING MAY BEGIN TO BE A PROBLEM. NO SEVERE WEATHER HAS YET TO BE REPORTED WITH THESE STORMS. HOWEVER... PEOPLE IN SOUTHEAST SOUTH DAKOTA...SOUTHWEST MINNESOTA...AND NORTHWEST IOWA SHOULD BE ON THE LOOKOUT FOR THREATENING WEATHER AND LISTEN FOR LATER STATEMENTS AND POSSIBLE WARNINGS. GEELHART
Special weather statement, Jul 9, 6:34 PM CDT, 51 minutes before
IAZ013-020-021-031-032-043-NEZ094>096-SDZ066-100005- SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE SIOUX CITY IA 634 PM CDT THU JUL 9 1992 ...A TORNADO WATCH IS IN EFFECT FOR THE SIOUXLAND AREA UNTIL 9PM... AT 630 PM THUNDERSTORMS PRODUCING HEAVY RAIN AND POSSIBLY SMALL HAIL WERE 45 MILES NORTHWEST OF SIOUX CITY...NEAR BERESFORD SOUTH DAKOTA. THUNDERSTORMS WILL CONTINUE TO MOVE NORTHEAST ACROSS THIS REGION ALONG HIGHWAY 46 THROUGH 730 PM. MEANWHILE...SCATTERED SHOWERS AND THUNDERSTORMS WERE 60 MILES NORTHEAST OF SIOUX CITY...NEAR SANBORN IOWA. STILL OTHER THUNDERSTORMS WERE 30 MILES WEST OF SIOUX CITY...NEAR DIXON NEBRASKA. MOVEMENT WAS NORTHEAST AT 30 MILES AN HOUR. DROZD
Special weather statement, Jul 9, 6:44 PM CDT, 41 minutes before
SDZ020-100015-
SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE SIOUX FALLS SD
643 PM CDT THU JUL 9 1992
...A TORNADO WATCH IS IN EFFECT UNTIL 9 PM CDT FOR SOUTHEAST SOUTH
DAKOTA...SOUTHWEST MINNESOTA...AND NORTHWEST IOWA...
AT 635 PM CDT...RADAR INDICATED AN INTENSE THUNDERSTORM 20 MILES
NORTHWEST OF YANKTON SOUTH DAKOTA IN NORTHEAST BON HOMME COUNTY.
THE STORM WAS MOVING EAST/SOUTHEAST AT 30 MPH AND WILL AFFECT NORTHERN
YANKTON COUNTY OF SOUTHEAST SOUTH DAKOTA THROUGH 715 PM CDT.
THIS STORM IS CAPABLE OF PRODUCING HEAVY RAINS...HAIL AND GUSTY WINDS.
PERSONS IN YANKTON COUNTY SHOULD KEEP ABREAST OF THIS STORM AND BE
PREPARED TO SEEK SHELTER IF THREATENING WEATHER APPROACHES OR IF A
{WARNING IS ISSUED.Special weather statement, Jul 9, 7:06 PM CDT, 19 minutes before
IAZ013-020-021-031-032-043-NEZ094>096-SDZ066-100035- SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE SIOUX CITY IA 706 PM CDT THU JUL 9 1992 ...A TORNADO WATCH IS IN EFFECT FOR THE SIOUXLAND AREA UNTIL 9PM... AT 705 PM AN INTENSE THUNDERSTORM WAS 55 MILES NORTHEAST OF SIOUX CITY NEAR PAULINA IOWA. THIS STORM WILL PASS THROUGH CHEROKEE IOWA BY 740 PM. OTHER STORMS EXTENDED WEST TO BERESFORD SOUTH DAKOTA. MOVEMENT WAS SOUTHEAST AT 30 MILES AN HOUR. VERY HEAVY RAIN...HAIL AND GUSTY WINDS CAN BE EXPECTED WITH THESE STORMS AS THEY MOVE SOUTH OF HIGHWAY 3 IN IOWA AND HIGHWAY 48 IN SOUTH DAKOTA BY 8 PM. DROZD
Special weather statement, Jul 9, 7:07 PM CDT, 18 minutes before
SDZ010-015-100045- SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE SIOUX FALLS SD 705 PM CDT THU JUL 9 1992 ...SEVERE THUNDERSTORM WATCH NUMBER 581 CANCELLED FOR MOST OF SOUTH CENTRAL SOUTH DAKOTA... AT 700 PM CDT THE NATIONAL WEATHER SERVICE CANCELLED SEVERE THUNDERSTORM WATCH NUMBER 581 WEST OF A CHAMBERLAIN TO GREGORY LINE. THE CANCELLATION INCLUDES THE PIERRE AREA. THUNDERSTORMS CONTINUED TO MOVE EAST FROM SOUTH CENTRAL INTO SOUTHEAST SOUTH DAKOTA...AND NO OTHER STORMS ARE EXPECTED TO MOVE INTO THE AREA. WILLIAMS
Nearby
Severe Thunderstorm Warnings in Iowa, 1992Every severe thunderstorm warning in 1992
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.