Alert archive / Iowa / Severe Thunderstorm Warnings in 1990
Severe Thunderstorm Warning 11, NWS Des Moines, IA
NWS Des Moines, IA issued this severe thunderstorm warning at Mar 13, 1990, 1:55 PM CST for Carroll County, Iowa. It was in force for 35 min.
The area
The counties it named.
The facts
- Issued
- Mar 13, 1990, 1:55 PM CST (19:55 UTC)
- Expired
- Mar 13, 1990, 2:30 PM CST
- In force
- 35 min
- Issued by
- NWS Des Moines, IA
- Area
- Whole counties
County Carroll 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, 7.9 hours before the alert went out and 148 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
- 3580 m above ground
- 0-6 km bulk shear
- 59 kt
- 0-1 km storm-relative helicity
- 361 m²/s²
- 0-3 km storm-relative helicity
- 336 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 131955
SVRDSM
IAC027-132030-
BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE DES MOINES IA
155 PM CST TUE MAR 13 1990
THE NATIONAL WEATHER SERVICE IN DES MOINES HAS ISSUED A
SEVERE THUNDERSTORM WARNING EFFECTIVE UNTIL 230 PM CST
FOR PEOPLE IN THE FOLLOWING COUNTY...
IN WEST CENTRAL IOWA
...NORTHWEST HALF OF CARROLL
AT 153 PM...WEATHER RADAR INDICATED A SEVERE THUNDERSTORM OVER
SOUTHWEST CARROLL COUNTY NEAR MANNING...OR ABOUT 60 MILES NORTHEAST OF
OMAHA.
THE STORM WAS MOVING NORTHEAST AT 40 MILES AN HOUR...AND WILL BE
AFFECTING THE CITIES OF CARROLL...MOUNT CARMEL...AND ARCADIA.
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. REMAIN CALM BUT BE ALERT TO
RAPIDLY CHANGING WEATHER CONDITIONS.
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.
KS/TRUETwTWhat 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, Mar 13, 12:13 PM CST, 1 hour 42 minutes before
IAZALL-131900- SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE DES MOINES IA 1210 PM CST TUE MAR 13 1990 ...TORNADO WATCH FOR A LARGE PART OF NORTHERN AND WESTERN IOWA UNTIL 6 PM... ...FLASH FLOOD WATCH FOR THE SOUTH HALF OF IOWA TODAY... AT 1205 PM...SHOWERS AND THUNDERSTORMS CONTINUED FROM WEST CENTRAL INTO NORTHWEST AND NORTH CENTRAL IOWA. THE STRONGEST STORMS WERE LOCATED PRIMARILY BETWEEN STORM LAKE...LAKE CITY...WEBSTER CITY AND HUMBOLDT...OR WITHIN A 45 MILE RADIUS OF FORT DODGE. THESE STORMS HAVE WEAKENED CONSIDERABLY SINCE 1130 AM...HOWEVER BRIEF HEAVY RAIN...SMALL HAIL AND 30 TO 40 MILE AN HOUR WINDS CAN BE EXPECTED WITH THE PASSAGE OF THESE STORMS. THESE STORMS WERE PART OF A LARGER AREA OF SHOWERS AND STORMS IN AN AREA BOUNDED BY THE CITIES OF OMAHA/COUNCIL BLUFFS NORTHEAST TO SPENCER THEN SOUTHWEST TO IOWA FALLS. IOWA FALLS OR ABOUT 35 TO 40 MILES WEST OF WATERLOO. ISOLATED SHOWERS WERE LOCATED OVER SOUTHWESPT IOWA...NEAR BEDFORD... 70 MILES SOUTHWEST OF DES MOINES. THE SHOWERS AND STORMS WEERE MOVING NORTHEAST AT 40 MILES AN HOUR. CAB/KAS
Special weather statement, Mar 13, 12:54 PM CST, 1 hour 1 minute before
IAZALL-131930- SPECIAL WEATHER STATEMENT AND RADAR SUMMARY NATIONAL WEATHER SERVICE DES MOINES IA 1253 PM CST TUE MAR 13 1990 ...TORNADO WATCH FOR A LARGE PART OF NORTHERN AND WESTERN IOWA UNTIL 6 PM... ...FLASH FLOOD WATCH FOR THE SOUTH HALF OF IOWA TODAY... AT 1235 AM...A INTENSE THUNDERSTORM WAS LOCATED 70 MILES NORTH OF DES MOINES OR JUST NORTHWEST OF CLARION. LARGE HAIL...VERY HEAVY RAIN AND 35 TO 45 MILE AN HOURS WINDS ARE POSSIBLE WITH THIS STORM. THIS STORM WAS PART OF A LARGE AREA OF SHOWERS AND STORMS MOVING FROM NORTHWEST AND CENTRAL INTO NORTH CENTRAL IOWA. THE AREA WAS 70 MILES WIDE AND IT EXTENDED FROM AMES...25 MILES NORTH OF DES MOINES NORTH TO THE IOWA/MINNESOTA BORDER...40 MILES NKORTHWEST OF MASON CITY. ELSEWHERE SHOWERS AND ISOLATED THUNDERSTORMS WERE BECOMING MORE NUMEROUS OVER PARTS OF SOUTHWEST...SOUTH CENTRAL...EAST CENTRAL AND NORTHEAST IOWA. THE SHOWERS AND STORMS WERE MOVING NORTHEAST AT 40 MILES AN HOUR... AS AREAL COVERAGE OVER IOWA WAS INCREASING RAPIDLY. CAB/KS
Special weather statement, Mar 13, 12:58 PM CST, 57 minutes before
IAZALL-131930- SPECIAL WEATHER STATEMENT AND RADAR SUMMARY...CORRECTED NATIONAL WEATHER SERVICE DES MOINES IA 1253 PM CST TUE MAR 13 1990 ...TORNADO WATCH FOR A LARGE PART OF NORTHERN AND WESTERN IOWA UNTIL 6 PM... ...FLASH FLOOD WATCH FOR THE SOUTH HALF OF IOWA TODAY... AT 1235 PM...A INTENSE THUNDERSTORM WAS LOCATED 70 MILES NORTH OF DES MOINES OR JUST NORTHWEST OF CLARION. LARGE HAIL...VERY HEAVY RAIN AND 35 TO 45 MILE AN HOURS WINDS ARE POSSIBLE WITH THIS STORM. THIS STORM WAS PART OF A LARGE AREA OF SHOWERS AND STORMS MOVING FROM NORTHWEST AND CENTRAL INTO NORTH CENTRAL IOWA. THE AREA WAS 70 MILES WIDE AND IT EXTENDED FROM AMES...25 MILES NORTH OF DES MOINES NORTH TO THE IOWA/MINNESOTA BORDER...40 MILES NORTHWEST OF MASON CITY. ELSEWHERE SHOWERS AND ISOLATED THUNDERSTORMS WERE BECOMING MORE NUMEROUS OVER PARTS OF SOUTHWEST...SOUTH CENTRAL...EAST CENTRAL AND NORTHEAST IOWA. THE SHOWERS AND STORMS WERE MOVING NORTHEAST AT 40 MILES AN HOUR... AS AREAL COVERAGE OVER IOWA WAS INCREASING RAPIDLY. CAB/KS
Special weather statement, Mar 13, 1:15 PM CST, 40 minutes before
IAZALL-132000- SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE DES MOINES IA 112 PM CST TUE MAR 13 1990 ...TORNADO WATCH FOR A LARGE PART OF NORTHERN AND WESTERN IOWA UNTIL 6 PM... ...FLASH FLOOD WATCH FOR THE SOUTH HALF OF IOWA TODAY... AT 105 PM...SCATTERED SHOWERS AND THUNDERSTORMS WERE LOCATED OVER ALL BUT THE FAR NORTHWEST...FAR NORTHEAST AND FAR SOUTHEAST COUNTIES OF IOWA. THE STRONGEST THUNDERSTORMS WERE LOCATED JUST NORTH OF ELDORA AND BETWEEN IOWA FALLS AND CLARION. ELDORA IS ABOUT 30 MILES SOUTHWEST OF WATERLOO...WHILE CLARION AND IOWA FALLS ARE SOME 35 TO 40 MILES SOUTHWEST THROUGH SOUTH OF MASON CITY. BRIEF VERY HEAVY RAIN...SMALL HAIL AND 30 TO 40 MILE AN HOURS WINDS I.S LIKELY WITH THESE STORMS. THE SHOWERS AND STORMS WERE MOVING NORTHEAST AT 40 MILES AN HOUR...WITH A CONTINUED INCREASE IN AREAL COVERAGE OVER IOWA. CAB/KS
Special weather statement, Mar 13, 1:35 PM CST, 20 minutes before
SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE DES MOINES IA 135 PM CST TUE MAR 13 1990 VERY INTENSE THUNDERSTORMS HAVE CONTINUED TO DEVELOP OVER PARTS OF EAST CENTRAL IOWA. AT 130 PM RADAR INDICATED SEVERAL INTENSE THUNDERSTORMS EXTENDING ACROSS NORTHERN IOWA INTO NORTHERN JOHNSON COUNTIES OF EAST CENTRAL IOWA. THIS IS FROM ABOUT 30 MILES SOUTHWEST OF CEDAR RAPIDS TO THE CORALVILLE RESERVOIR AREA...WHICH IS ABOUT 10 TO 15 MILES SOUTH OF CEDAR RAPIDS. THESE STORMS HAVE THE POTENTIAL TO PRODUCE 1/2 TO 3/4 INCH HAIL AND LOCALLY HEAVY RAINS. THESE STORMS HAVE BEEN MOVING TO THE NORTHEAST AROUND 40 MILES AN HOUR AND WILL ENTER THE SOUTHERN PARTS OF BENTON AND LINN COUNTIES DURING THE NEXBT 1/2 HOUR. ADAMS
Special weather statement, Mar 13, 1:55 PM CST, 0 minutes before
IAZALL-132030- SPECIAL WEATHER STATEMENT AND RADAR SUMMARY NATIONAL WEATHER SERVICE DES MOINES IA 153 PM CST TUE MAR 13 1990 ...TORNADO WATCH FOR A LARGE PART OF NORTHERN AND WESTERN IOWA UNTIL 6 PM... ...FLASH FLOOD WATCH FOR THE SOUTH HALF OF IOWA TODAY... AT 135 PM...INTENSE THUNDERSTORMS WERE LOCATED OVER WEST CENTRAL... CENTRAL...EAST CENTRAL AND NORTH CENTRAL IOWA. THE STORMS WERE LOCATED NEAR MANILLA...35 MILES NORTHEAST OF OMAHA/COUNCIL BLUFFS...20 MILES SOUTH OF MASON CITY OR JUST WEST OF BELMOND...55 MILES NORTHEAST OF DES MOINES OR JUST WEST OF TAMA/TOLEDO AND ABOUT 10 MILES WEST OF CEDAR RAPIDS. LARGE HAIL...EXTREMELY HEAVY RAIN AND WINDS OF 30 TO 40 MILES AN HOUR IS LIKELY WITH ANY OF THESE STORMS. THESE STORMS WERE PART OF A LARGE AREA OF SCATTERED SHOWERS AND WIDELY SCATTERED THUNDERSTORMS LOCATED OVER ALL BUT THE FAR NORTHWEST... FAR NORTHEAST AND FAR SOUTHEAST COUNTIES OF IOWA. THESE STORMS HAVE SHOWN A TENuDENCY TO DEVELOP RAPIDLY...PRODUCE LARGE HAIL AND THEN DECREASE RAPIDLY IN INTENSITY. THE SHOWERS AND STORMS WERE MOVING NORTH NORTHEAST AT 45 MILES AN HOUR. CAB/KS
The office that day
Everything else NWS Des Moines, IA issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Mar 12, 8:55 PM CST | Severe Thunderstorm Warning | DMX | Madison, Polk | 50 min |
| Mar 12, 11:17 PM CST | Severe Thunderstorm Warning | DMX | Appanoose, Monroe | 33 min |
| Mar 12, 11:28 PM CST | Severe Thunderstorm Warning | DMX | Lucas, Wayne | 20 min |
| Mar 12, 11:53 PM CST | Severe Thunderstorm Warning | DMX | Clarke, Decatur, Lucas | 52 min |
| Mar 13, 12:38 PM CST | Severe Thunderstorm Warning | DMX | Wright | 17 min |
| Mar 13, 1:33 PM CST | Severe Thunderstorm Warning | DMX | Poweshiek | 27 min |
| Mar 13, 1:51 PM CST | Severe Thunderstorm Warning | DMX | Tama | 39 min |
| Mar 13, 2:28 PM CST | Severe Thunderstorm Warning | DMX | Calhoun | 42 min |
| Mar 13, 2:31 PM CST | Severe Thunderstorm Warning | DMX | Black Hawk | 49 min |
| Mar 13, 3:24 PM CST | Severe Thunderstorm Warning | DMX | Davis | 36 min |
| Mar 13, 3:42 PM CST | Tornado Warning | DMX | Davis | 18 min |
| Mar 13, 3:57 PM CST | Tornado Warning | DMX | Jefferson, Van Buren | 33 min |
| Mar 13, 4:18 PM CST | Severe Thunderstorm Warning | DMX | Bremer | 22 min |
| Mar 13, 4:18 PM CST | Severe Thunderstorm Warning | DMX | Chickasaw | 47 min |
| Mar 13, 5:11 PM CST | Severe Thunderstorm Warning | DMX | Washington | 49 min |
| Mar 13, 5:16 PM CST | Severe Thunderstorm Warning | DMX | Johnson | 29 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.