Alert archive / Iowa / Severe Thunderstorm Warnings in 1990
Severe Thunderstorm Warning 42, NWS Des Moines, IA
NWS Des Moines, IA issued this severe thunderstorm warning at Jun 7, 1990, 12:01 PM CDT for Marshall County, Story County, Iowa. It was in force for 23 min.
The area
The counties it named.
The facts
- Issued
- Jun 7, 1990, 12:01 PM CDT (17:01 UTC)
- Expired
- Jun 7, 1990, 12:24 PM CDT
- In force
- 23 min
- Issued by
- NWS Des Moines, IA
- Area
- Whole counties
Counties Marshall County, IA, Story 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 12:00Z, 5.0 hours before the alert went out and 272 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
- 3632 m above ground
- 0-6 km bulk shear
- 42 kt
- 0-1 km storm-relative helicity
- 67 m²/s²
- 0-3 km storm-relative helicity
- 123 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 071701
SVRDSM
IAC127-169-071745-
BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE DES MOINES IA
1201 PM CDT THU JUN 7 1990
THE NATIONAL WEATHER SERVICE IN DES MOINES HAS ISSUED A
SEVERE THUNDERSTORM WARNING EFFECTIVE UNTIL 1245 PM CDT
FOR PEOPLE IN THE FOLLOWING COUNTIES...
IN CENTRAL IOWA
...WESTERN MARSHALL...SOUTHEASTERN STORY
AT 1156 AM...WEATHER RADAR AND LAW ENFORCEMENT OFFICIALS INDICATED A
SEVERE THUNDERSTORM OVER EXTREME NORTHERN POLK COUNTY OR ABOUT 20
MILES NORTH OF DES MOINES NEAR HUXLEY.
THE STORM WAS MOVING EAST NORTHEAST AT 40 MILES AN HOUR AND WILL
AFFECT THE TOWNS OF MAXWELL...COLLINS...IOWA
CENTER...RHOADES AND MELBOURNE.
THIS STORM WILL LIKELY PRODUCE WINDS IN EXCESS OF 60 MILES AN HOUR
WITH LOCALIZED TREE AND POWER LINE DAMAGE.
IF YOU ARE CAUGHT OUTSIDE...SEEK SHELTER FROM THE WEATHER IN A
STRONG BUILDING. DAMAGING WIND...LARGE HAIL...VERY HEAVY RAIN...Y
AND DEADLY LIGHTNING ARE ALL POSSIBLE IN SEVERE THUNDERSTORMS.
STAY INSIDE AWAY FROM WINDOWS UNTIL THE STORM HAS PASSED.
MYERSWhat 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, Jun 7, 10:44 AM CDT, 1 hour 17 minutes before
IAZ009-012-071630- SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE DES MOINES IA 1045 AM CDT THU JUN 7 1990 ...STRONG THUNDERSTORMS MOVING ACROSS SOUTHWEST IOWA... AT 1045 AM...A SMALL LINE OF STRONG THUNDERSTORMS WERE MOVING ACROSS SOUTHWEST IOWA. THE LINE OF STORMS STRETCHED FROM 25 MILES EAST OF COUNCIL BLUFFS TO JUST EAST OF SHENANDOAH...AND WAS MOVING EAST AT 25 MILES AN HOUR. AT THIS RATE OF MOVEMENT...THE STORMS WILL ENTER CASS...ADAMS...AND TAYLOR COUNTIES...AND THE CITIES OF ATLANTIC...CRESTON...AND BEDFORD... BETWEEN 1045 AM AND 1130 AM. RESIDENTS IN THESE COUNTIES SHOULD REMAIN ALERT FOR WINDS OF 40 TO 50 MILES AN HOUR...SOME HAIL...AND EXTREMELY HEAVY RAINS. THESE STORMS DID PRODUCE SEVERE WEATHER AS THEY MOVED THROUGH THE OMAHA-COUNCIL BLUFFS AREA AT AROUND 10 AM THIS MORNING. TRUETT
Local storm report, Jun 7, 11:15 AM CDT, 46 minutes before
LOCAL STORM REPORT NATIONAL WEATHER SERVICE DES MOINES IA 1115 AM CDT THU JUN 7 1990 1044 AM HARLAN AIRPORT /SHELBY COUNTY/ WIND GUST 50 MPH 1048 AM CLARINDA AIRPORT /PAGE COUNTY/ WIND GUST 50 MPH MYERS
Special weather statement, Jun 7, 11:41 AM CDT, 20 minutes before
IAZALL-071730- SPECIAL WEATHER STATEMENT AND RADAR SUMMARY NATIONAL WEATHER SERVICE DES MOINES IA 1140 AM CDT THU JUN 7 1990 ...STRONG THUNDERSTORMS CONTINUE MOVING ACROSS SOUTHWEST IOWA... AT 1125 AM...A LINE OF STRONG THUNDERSTORMS COTINUE TO MOVE ACROSS SOUTHWEST INTO CENTRAL IOWA. THE LINE OF STORMS STRETCHED FROM NEAR AUDUBON TO THE IOWA/MISSOURI BORDER NEAR BEDFORD...OR FROM 70 MILES WEST THROUGH 90 MILES SOUTHWEST OF DES MOINES. THESE STORMS WERE MOVING EAST AT 45 MILES AN HOUR. THESE STRONG THUNDERSTORMS...HAVE BEEN PRODUCING VERY HEAVY RAINFALL ...FREQUENT DANGEROUS LIGHTNING...AND COULD PRODUCE STRONG GUSTY WIND AND POSSIBLY SOME SMALL HAIL. RESIDENTS IN THESE AREAS SHOULD REMAIN ALERT FOR FOR RAPIDLY CHANGING WEATHER CONDITIONS...AND BE PREPARED TO SEEK SHELTER IMMEDIATELY SHOULD THREATENING WEATHER APPROACH. OVER THE REMAINDER OF WESTERN AND CENTRAL AREAS OF THE STATE... THERE WERE NUMEROUS SHOWERS AND THUNDERSTO2RMS...ALL MOVING EAST AT AROUND 45 MILES AN HOUR. WPM
The office that day
Everything else NWS Des Moines, IA issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jun 7, 11:45 AM CDT | Severe Thunderstorm Warning | DMX | Dallas | 20 min |
| Jun 7, 11:54 AM CDT | Severe Thunderstorm Warning | DMX | Polk | 18 min |
| Jun 7, 5:40 PM CDT | Severe Thunderstorm Warning | DMX | Davis | 25 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; the sounding from the Mesonet's radiosonde archive.