Alert archive / Iowa / Severe Thunderstorm Warnings in 1990
Severe Thunderstorm Warning 155, NWS Des Moines, IA
NWS Des Moines, IA issued this severe thunderstorm warning at Jul 9, 1990, 7:23 PM CDT for Appanoose County, Iowa. It was in force for 52 min. 1 report came from inside the area while it was in force.
The area
The counties it named, with what was reported inside it.
The facts
- Issued
- Jul 9, 1990, 7:23 PM CDT (00:23 UTC)
- Expired
- Jul 9, 1990, 8:15 PM CDT
- In force
- 52 min
- Issued by
- NWS Des Moines, IA
- Area
- Whole counties
County Appanoose County, IA
The radar
The WSR-88D network and its archive begin in 1991, so there is no radar volume for this alert.
What was reported inside it
| Time | Report | Where | Remark |
|---|---|---|---|
| Jul 9, 7:40 PM CDT | Thunderstorm Wind 63 | Appanoose, IA |
NCEI Storm Data entries that began inside the alert's area while it was in force. Before 2003 the local storm report archive is thin, so this is the record of what happened rather than what was phoned in. Storm Data before 1996 records only tornadoes, thunderstorm wind and hail.
The nearest sounding before it
Omaha, NE (KOAX), launched 00:00Z, 0.4 hours before the alert went out and 301 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
- 3634 m above ground
- 0-6 km bulk shear
- 24 kt
- 0-1 km storm-relative helicity
- 114 m²/s²
- 0-3 km storm-relative helicity
- 246 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 KDSM 100024
SVRDSM
IAC007-100115-
BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE DES MOINES IA
723 PM CDT MON JUL 9 1990
THE NATIONAL WEATHER SERVICE IN DES MOINES HAS ISSUED A
SEVERE THUNDERSTORM WARNING EFFECTIVE UNTIL 815 PM CDT
FOR PEOPLE IN THE FOLLOWING COUNTY...
IN SOUTH CENTRAL IOWA
...APPANOOSE
AT 720 PM...NATIONAL WEATHER SERVICE RADAR IN DES MOINES INDICATED AN
INTENSE THUNDERSTORM IN DECATUR COUNTY...MOVING EAST INTO APPANOOSE
COUNTY AT 25 TO 30 MILES AN HOUR. THIS AREA IS ABOUT 60 TO 70 MILES
SOUTHEAST OF DES MOINES...OR 40 MILES SOUTHWEST OF OTTUMWA.
THIS WARNING INCLUDES THE CITY OF CENTERVILLE...AS WELL AS
PLANO...JEROME...NUMA...MYSTIC...CINCINNATI...AND EXLINE. THE WARNING
ALSO INCLUDES RATHBUN RESERVOIR.
SEVERE THUNDERSTORMS PRODUCE DAMAGING WIND IN EXCESS OF 60
MPH...DESTRUCTIVE HAIL...DEADLY LIGHTNING...AND VERY HEAVY RAIN.
FOR YOUR PROTECTION MOVE TO AN INTERIOR ROOM ON THE LOWEST FLOOR
OF YOUR HOME OR BUSINESS. HEAVY RAINS FLOOD ROADS QUICKLY SO
DON'T DRIVE INTO AREAS WHERE WATER COVERS THE ROAD.
DOWD/HUTTONWhat 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, 5:09 PM CDT, 2 hours 14 minutes before
IAZALL-092330- SPECIAL WEATHER STATEMENT AND WEATHER UPDATE FOR IOWA NATIONAL WEATHER SERVICE DES MOINES IA 509 PM CDT MON JUL 9 1990 AT 502 PM...AN INTENSE THUNDERSTORM HAD RAPIDLY DEVELOPED IN SOUTHWEST IOWA...JUST NORTH OF BEDFORD OR 65 MILES SOUTHWEST OF DES MOINES. THIS STORM IS CAPABLE OF PRODUCING BRIEF...VERY HEAVY RAIN...SMALL HAIL... GUSTY WIND TO 40 MILES AN HOUR AND FREQUENT CLOUD TO GROUND LIGHTNING. OTHER WIDELY SCATTERED SHOWERS AND THUNDERSTORMS WERE LOCATED SOUTH AND WEST OF A LINE...FROM SIOUX CITY...TO WATERLOO...TO DES MOINES...TO NEAR OTTUMWA...TO NEAR LAMONI. THE STRONGEST OF THESE STORMS WAS ABOUT 12 MILES SOUTH OF INDIANOLA...OR 25 MILES SOUTH OF DES MOINES. BRIEFF... HEAVY RAIN...WIND TO 30 MILES AN HOUR AND DANGEROUS CLOUD TO GROUND LIGHTNING CAN BE EXPECTED. THE SHOWERS AND THUNDERSTORMS WERE MOVING EAST AT 30 MILES AN HOUR. HUTTON
Special weather statement, Jul 9, 5:54 PM CDT, 1 hour 29 minutes before
IAZALL-100000- SPECIAL WEATHER STATEMENT AND RADAR SUMMARY NATIONAL WEATHER SERVICE DES MOINES IA 554 PM CDT MON JUL 9 1990 AT 530 PM...INTENSE THUNDERSTORMS WERE IN SOUTHWEST IOWA...FROM 10 MILES NORTHWEST OF LAMONI...TO 50 MILES SOUTHEAST OF COUNCIL BLUFFS. SOME OF STORMS IN THIS AREA ARE CAPABLE OF BRIEF...EXTREMELY HEAVY RAIN...HAIL ...WIND GREATER THAN 50 MILES AN HOUR AND FREQUENT CLOUD TO GROUND LIGHTNING. OTHER WIDELY SCATTERED SHOWERS AND THUNDERSTORMS WERE LOCATED SOUTH AND WEST OF A LINE FROM SIOUX CITY...TO WATERLOO...TO OTTUMWA...TO LAMONI. THE SHOWERS AND THUNDERSTORMS WERE MOVING EAST AT 30 MILES AN HOUR... EXCEPT IN THE SOUTHWEST WHERE THE STORMS WERE DRIFTING NORTH AT zABOUT 10 TO 15 MILES AN HOUR. HUTTON
Special weather statement, Jul 9, 6:18 PM CDT, 1 hour 5 minutes before
IAZALL-100000- SPECIAL WEATHER STATEMENT AND WEATHER UPDATE FOR IOWA NATIONAL WEATHER SERVICE DES MOINES IA 615 PM CDT MON JUL 9 1990 AT 605 PM...SCATTERED INTENSE THUNDERSTORMS WERE OCCURRING OVER SOUTH CENTRAL AND SOUTHWEST IOWA. THE STRONGEST STORMS WERE LOCATED OVER WESTERN RINGGOLD COUNTY AND WESTERN DECATUR COUNTY...NEAR MOUNT AYR AND DIAGONAL...AND 15 MILES NORTH OF LEON. THESE COMMUNITIES ARE 50 TO 60 MILES SOUTH AND SOUTHWEST OF DES MOINES. THESE STORMS ARE CAPABLE OF PRODUCING HEAVY RAINS...LARGE HAIL...WIND UP TO 50 MILES AN HOUR...AND DANGEROUS LIGHTNING. TORNADOES ARE ALSO POSSIBLE WITH THESE EXTREMELY STRONG STORMS. THESE STORMS WERE MOVING NORTH AT 10 TO 15 MILES AN HOUR AND PERSONS IN THE PATH OF THESE STORMS SHOULD MONITOR WEATHER REPORTS AND SEEK IMMEDIATE SHELTER. ALSO...WIDELY SCATTERED SHOWERS AND THUNDERSTORMS WERE OVER WEST CENTRAL ...NORTH CENTRAL...CENTRAL...AND SOUTHEAST IOWA. THESE SHOWERS WERE GENERALLY SOUTH OF A SIOUX CITY TO WATERLOO LINE AND WERE MOVING EAST AT 30 MILES AN HOUR. DM
Special weather statement, Jul 9, 6:49 PM CDT, 34 minutes before
IAZALL-100035- SPECIAL WEATHER STATEMENT AND RADAR SUMMARY NATIONAL WEATHER SERVICE DES MOINES IA 647 PM CDT MON JUL 9 1990 AT 631 PM...INTENSE THUNDERSTORMS CONTINUED OVER SOUTH CENTRAL AND SOUTHWEST IOWA. THE STRONGEST STORMS WERE LOCATED IN DECATUR COUNTY... FROM THE LAMONI AREA TO 10 MILES NORTH AND NORTHEAST OF LEON...50 MILES SOUTH OF DES MOINES. CONFIRMED FUNNEL CLOUDS WERE REPORTED NEAR THE TOWN OF KELLERON IN EXTREME EASTERN RINGGOLD COUNTY...60 MILES SOUTH SOUTHWEST OF DES MOINES. THESE STORMS ARE CAPABLE OF PRODUCING HEAVY RAINS...LARGE HAIL...WIND OVER 50 MILES AN HOUR...AND DANGEROUS LIGHTNING. TORNADOES ARE ALSO POSSIBLE WITH THESE STORMS. PERSONS IN THE PATH OF THESE STORMS ARE URGED TO SEEK IMMEDIATE SHELTER. THESE STORMS WERE MOVING NORTH AT 10 TO 15 MILES AN HOUR. ALSO...ISOLATED THUNDERSTORMS AND SHOWERS WERE OVER NORTHWEST AND NORTH CENTRAL IOWA...FROM EAST OF SIOUX CITY TO THE STORY CITY AREA. THESE STORMS ARE MOVING EAST AT 25 MILES AN HOUR. DM
Special weather statement, Jul 9, 7:02 PM CDT, 21 minutes before
IAZALL-100035- SPECIAL WEATHER STATEMENT AND RADAR SUMMARY...CORRECTED 1ST PAR. NATIONAL WEATHER SERVICE DES MOINES IA 702 PM CDT MON JUL 9 1990 AT 631 PM...INTENSE THUNDERSTORMS CONTINUED OVER SOUTH CENTRAL AND SOUTHWEST IOWA. THE STRONGEST STORMS WERE LOCATED IN DECATUR COUNTY... FROM THE LAMONI AREA TO 10 MILES NORTH AND NORTHEAST OF LEON...50 MILES SOUTH OF DES MOINES. CONFIRMED FUNNEL CLOUDS WERE REPORTED NEAR THE TOWN OF KELLERON IN EXTREME EASTERN RINGGOLD COUNTY AROUND 610 PM...60 MILES SOUTH SOUTHWEST OF DES MOINES. THESE STORMS ARE CAPABLE OF PRODUCING HEAVY RAINS...LARGE HAIL...WIND OVER 50 MILES AN HOUR...AND DANGEROUS LIGHTNING. TORNADOES ARE ALSO POSSIBLE WITH THESE STORMS. PERSONS IN THE PATH OF THESE STORMS ARE URGED TO SEEK IMMEDIATE SHELTER. THESE STORMS WERE MOVING NORTH AT 10 TO 15 MILES AN HOUR. ALSO...ISOLATED THUNDERSTORMS AND SHOWERS WERE OVER NORTHWEST AND NORTH CENTRAL IOWA...FROM EAST OF SIOUX CITY TO THE STORY CITY AREA. THESE STORMS ARE MOVING EAST AT 25 MILES AN HOUR. DM
Special weather statement, Jul 9, 7:20 PM CDT, 3 minutes before
IAZALL-100135- SPECIAL WEATHER STATEMENT AND WEATHER UPDATE FOR IOWA NATIONAL WEATHER SERVICE DES MOINES IA 715 PM CDT MON JUL 9 1990 AT 706 PM...ISOLATED INTENSE THUNDERSTORMS CONTINUED OVER SOUTH CENTRAL IOWA. THE STORMS WERE LOCATED IN THE RATHBUN LAKE...CORYDON AND ALLERTON AREAS...ABOUT MIDWAY BETWEEN LAMONI AND OTTUMWA. ALONG WITH THE EXTREMELY HEAVY RAINS...WINDS OVER 50 MILES AN HOUR ARE LIKELY. THE STORMS WERE MOVING NORTHEAST AT 20 MILES AN HOUR AND WILL BE IN THE RATHBUN LAKE AND ALLERTON AREAS FOR THE NEXT HOUR. ALSO...SCATTERED SHOWERS AND STORMS EXTENDED FROM SOUTHWEST INTO SOUTHEAST IOWA...ALONG OR SOUTH OF AN OMAHA/COUNCIL BLUFFS...OTTUMWA LINE. THE TORNADO WARNING FOR PARTS OF RINGGOLD AND DECATUR COUNTIES HAD EXPIRED. AND -NO TORNADO WATCHES- ARE IN EFFECT AT THIS TIME. / KS
The office that day
Everything else NWS Des Moines, IA issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jul 9, 7:51 PM CDT | Severe Thunderstorm Warning | DMX | Davis, Van Buren | 54 min |
| Jul 9, 8:14 PM CDT | Severe Thunderstorm Warning | DMX | Jefferson, Wapello | 61 min |
Nearby
Severe Thunderstorm Warnings in Iowa, 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; verification from NCEI's Storm Data; the sounding from the Mesonet's radiosonde archive.