Tornado Warning 47, NWS Des Moines, IA

Issued

Aug 29, 1990, 1:18 AM CDT (06:18 UTC)

Expired

Aug 29, 1990, 2:00 AM CDT

In force

42 min

Issued by

NWS Des Moines, IA

Area

Whole counties

County Wapello County, IA

The WSR-88D network and its archive begin in 1991, so there is no radar volume for this alert.

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.

000 
TTAA00 KDSM 290620
TORDSM
IAC179-290700-
 
BULLETIN - EBS ACTIVATION REQUESTED
TORNADO WARNING
NATIONAL WEATHER SERVICE DES MOINES IA
118 AM CDT WED AUG 29 1990
 
THE NATIONAL WEATHER SERVICE IN DES MOINES HAS ISSUED A
TORNADO WARNING EFFECTIVE UNTIL  200 AM CDT
FOR PEOPLE IN THE FOLLOWING COUNTY...
 
IN SOUTHEAST IOWA
          ...SOUTHERN WAPELLO
 
AT 118 AM...WEATHER RADAR CONTINUED TO INDICATE A TORNADIC
THUNDERSTORM ABOUT 5 MILES NORTHWEST OF OTTUWMA NEAR HIGHWAY 23.
 
THE STORM WAS MOVING SOUTHEAST AT 25 MILES AN HOUR AND WILL AFFECT THE
COMMUNITIES OF OTTUMWA AND RURAL AREAS SOUTH OF HIGHWAY 34.
 
THIS WARNING IS AN EXPANSION OF THE PREVIOUS WARNING FOR NORTHERN
WAPELLO.
 
IF YOU ARE CAUGHT OUTSIDE...SEEK SHELTER IN A NEARBY REINFORCED
BUILDING.  AS A LAST RESORT...SEEK SHELTER IN A CULVERT...DITCH
OR LOW SPOT AND COVER YOUR HEAD WITH YOUR HANDS.
 
MYERS

In the hours before

IAZ011-290450-

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE DES MOINES IA
1120 PM CDT TUE AUG 28 1990

THUNDERSTORMS WITH INTENSE RAIN AND LIGHTNING HAVE ERUPTED IN A VERY
SHORT PERIOD OF TIME OVER EASTERN IOWA.  THE STORMS EXTENDED FROM THE
MUSCATINE AREA...50 MILES SOUTHEAST OF CEDAR RAPIDS...WEST THROUGH
PARTS OF WASHINGTON...KEOKUK AND SOUTHERN IOWA COUNTIES.

MOST INTENSE OF THESE STORMS WERE JUST NORTHWEST OF MUSCATINE AND JUST
NORTH OF KEOTA...WHICH IS 35 MILES NORTHEAST OF OTTUMWA.

THESE STORMS WILL LAY DOWN INTENSE RAIN...DANGEROUS LIGHTNING AND
MARBLE-SIZED HAIL WITH WIND GUSTS OF 40 TO 50 MILES AN HOUR.  THE
STORMS WERE MOVING EAST SOUTHEAST AT 15 MILES AN HOUR...AS MOREm
STORMS BUILT BACK WESTWARD.

MYERS

IAZALL-290530-

SPECIAL WEATHER STATEMENT AND RADAR SUMMARY
NATIONAL WEATHER SERVICE DES MOINES IA
1143 PM CDT TUE AUG 28 1990

AT 1135 PM...A 30 MILE WIDE BAND OF SCATTERED SHOWERS AND INTENSE
THUNDERSTORMS HAD DEVELOPED RAPIDLY FROM 30 MILE SOUTHEAST OF
DES MOINES NEAR PELLA EAST TO ABOUT 5 MILES SOUTHWEST OF THE
QUAD CITIES.

THE STRONGEST STORMS WERE LOCATED 35 MILES SOUTHWEST OF THE QUAD CITIES
...NEAR WAPELLO AND 30 MILES NORTHEAST OF OTTUMWA...NEAR WASHINGTON.

THESE STORMS WILL PRODUCE MARBLE SIZED HAIL...VERY HEAVY RAIN AND NEARLY
CONTINUOUS DEADLY LIGHTNING.

EXACT MOVEMENT OF THE STORMS HAD NOT YET BEEN DETERMINED.

BARLOW

Tornado Warnings in Iowa, 1990Every tornado warning in 1990Tornadoes in 1990

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.