Alert archive / Iowa / Severe Thunderstorm Warnings in 1990
Severe Thunderstorm Warning 110, NWS Des Moines, IA
NWS Des Moines, IA issued this severe thunderstorm warning at Jun 27, 1990, 3:43 PM CDT for Johnson County, Linn County, Iowa. It was in force for 32 min.
The area
The counties it named.
The facts
- Issued
- Jun 27, 1990, 3:43 PM CDT (20:43 UTC)
- Expired
- Jun 27, 1990, 4:15 PM CDT
- In force
- 32 min
- Issued by
- NWS Des Moines, IA
- Area
- Whole counties
Counties Johnson County, IA, Linn 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
Minneapolis, MN (KSTC), launched 12:00Z, 8.7 hours before the alert went out and 368 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
- 2 J/kg
- Mixed-layer CIN
- -429 J/kg
- Mixed-layer LCL
- 1514 m above ground
- 0-6 km bulk shear
- 27 kt
- 0-1 km storm-relative helicity
- 135 m²/s²
- 0-3 km storm-relative helicity
- 210 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.3
The text
As transmitted, in the capitals the NWS used until 2016.
000
TTAA00 KDSM 272044
SVRDSM
IAC103-113-272130-
BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE DES MOINES IA
343 PM CDT WED JUN 27 1990
THE NATIONAL WEATHER SERVICE IN DES MOINES HAS ISSUED A
SEVERE THUNDERSTORM WARNING EFFECTIVE UNTIL 430 PM CDT
FOR PEOPLE IN THE FOLLOWING COUNTIES...
IN EAST CENTRAL IOWA
...NORTHERN JOHNSON...SOUTHERN LINN
AT 345 PM...DES MOINES WEATHER RADAR CONTINUED TO INDICATE A SEVERE
THUNDERSTORM OVER DOWNTOWN CEDAR RAPIDS.
THE STORM WAS MOVING SLOWLY SOUTH AT 15 MILES AN HOUR. THIS STORM
WILL EFFECT CEDAR RAPIDS...LAKE MACBRIDE AND THAT AREA OF JOHNSON
COUNTY NORTH OF INTERSTATE 80.
THE STORM HAS PRODUCED GOLFBALL HAIL AND TREE DAMAGE IN NORTHERN
SECTIONS OF CEDAR RAPIDS AND IN THE PALO AREA.
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.
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 27, 1:39 PM CDT, 2 hours 4 minutes before
IAZALL-271930- SPECIAL WEATHER STATEMENT AND RADAR SUMMARY NATIONAL WEATHER SERVICE DES MOINES IOWA 140 PM CDT WED JUN 27 1990 ...A SEVERE THUNDERSTORM WATCH IS IN EFFECT FOR A LARGE PART OF NORTH CENTRAL AND NORTHEAST IOWA UNTIL 8 PM CDT THIS EVENING... AT 130 PM...A STRONG THUNDERSTORM HAD MOVED INTO THE MINNESOTA/IOWA BORDER AREA 30 MILES NORTHEAST OF MASON CITY. THIS STORM IS CAPABLE OF PRODUCING HEAVY RAINFALL...SMALL HAIL...AND GUSTY WINDS TO 40 MILES AN HOUR. THIS STORM WAS MOVING SOUTHEAST AT 25 MILES AN HOUR. DM
Special weather statement, Jun 27, 2:15 PM CDT, 1 hour 28 minutes before
IAZ002-003-007-272000- SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE WATERLOO IA 210 PM CDT WED JUN 27 1990 AT 210 PM CDT...SHOWERS AND STRONG THUNDERSTORMS WERE MOVING INTO IOWA ALONG THE MINNESOTA BORDER...JUST NORTH OF MASON CITY...THEN EAST TO THE MISSISSIPPI RIVER. ELSEWHERE IT WAS HOT AND HUMID FROM DECORAH TO MASON CITY TO HAMPTON TO THE WATERLOO AREA. THE TEMPERATURES WERE IN THE LOWER 90S UNDER A CLOUD/SUN MIX. THE WINDS WERE SOUTHERLY AROUND 10 MILES AN HOUR. THE SHOWERS AND THUNDERSTORMS ARE MOVING SOUTHEAST AT AROUND 30 MILES AN HOUR AND SHOULD AFFECT THE OSAGE AND CRESCO AREAS BY 310 PM. AS THESE STORMS MOVE SOUTH THE TEMPERATURES ASSOCIATED WITH THE THUNDERSTORMS WILL DROP RAPIDLY ABOUT 15 TO 20 DEGREES. SOUTH OF HIGHWAY 18 WE WILL HAVE A CLOUD/SUN WITH TEMPERATURES IN THE 90S AND SOUTHERLY WINDS 5 TO 15 MILES AN HOUR.
Special weather statement, Jun 27, 2:15 PM CDT, 1 hour 28 minutes before
IAZALL-272000- SPECIAL WEATHER STATEMENT AND WEATHER UPDATE FOR IOWA NATIONAL WEATHER SERVICE DES MOINES IOWA 215 PM CDT WED JUN 27 1990 ...A SEVERE THUNDERSTORM WATCH IS IN EFFECT FOR A LARGE PART OF NORTH CENTRAL AND NORTHEAST IOWA UNTIL 8 PM CDT THIS EVENING... AT 205 PM...A COUPLE OF STRONG THUNDERSTORMS HAD MOVED INTO EXTREME NORTHEAST IOWA ALONG THE MINNESOTA BORDER. THE STORMS WERE LOCATED 15 TO 30 MILES NORTHEAST OF MASON CITY NEAR THE COMMUNITIES OF NORTHWOOD AND OSAGE. THESE STORMS ARE CAPABLE OF PRODUCING HEAVY RAINFALL...SMALL HAIL...AND GUSTY WIND TO 40 MILES AN HOUR. THE STORMS WERE MOVING SOUTHEAST AT 25 MILES AN HOUR. THE REMAINDER OF THE STATE WAS GENERALLY PARTLY SUNNY WITH TEMPERATURES IN THE 90S OVER MUCH OF THE STATE. / THE ONE TO TWO HOUR OUTLOOK IS FOR THE STORMS NORTHEAST OF MASON CITY TO CONTINUE MOVING SOUTHEAST INTO FAR NORTHEAST IOWA. DM
Special weather statement, Jun 27, 2:42 PM CDT, 1 hour 1 minute before
IAZALL-272030- SPECIAL WEATHER STATEMENT AND RADAR SUMMARY NATIONAL WEATHER SERVICE DES MOINES IOWA 242 PM CDT WED JUN 27 1990 ...A SEVERE THUNDERSTORM WATCH IS IN EFFECT FOR A LARGE PART OF NORTH CENTRAL AND NORTHEAST IOWA UNTIL 8 PM CDT THIS EVENING... AT 232 PM...SCATTERED VERY STRONG THUNDERSTORMS WERE OCCURRING OVER THE FAR NORTHEAST COUNTIES OF IOWA. THE STRONGEST STORMS WERE LOCATED 20 TO 30 MILES NORTHEAST OF MASON CITY...APPROACHING THE COMMUNITY OF OSAGE. THE STORMS AND SHOWERS SPREAD NORTH INTO MINNESOTA. THESE STORMS ARE CAPABLE OF PRODUCING VERY HEAVY RAINFALL...SMALL HAIL ...AND GUSTY WIND TO 40 MILES AN HOUR. THE STORMS WERE MOVING SOUTHEAST AT 25 MILES AN HOUR. IN3 ADDITION...AN ISOLATED THUNDERSTORM HAD DEVELOPED OVER EAST CENTRAL IOWA...JUST A FEW MILES NORTH OF CEDAR RAPIDS. / DM
Special weather statement, Jun 27, 3:13 PM CDT, 30 minutes before
IAZALL-272100- SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE DES MOINES IOWA 310 PM CDT WED JUN 27 1990 ...A SEVERE THUNDERSTORM WATCH IS IN EFFECT FOR A LARGE PART OF NORTH CENTRAL AND NORTHEAST IOWA UNTIL 8 PM CDT THIS EVENING... AT 308 PM...VERY INTENSE THUNDERSTORMS WERE OCCURRING AND DEVELOPING RAPIDLY OVER PARTS OF NORTHEAST AND EAST CENTRAL IOWA. THESE STORMS ARE CAPABLE OF PRODUCING VERY HEAVY RAINFALL...HAIL... AND GUSTY WINDS OiVER 50 MILES AN HOUR. THESE STORMS WERE LOCATED IN THE CHARLES CITY...WAVERLY...AND CEDAR RAPIDS VICINITIES. THE STORMS WERE MOVING SOUTHEAST AT 30 MILES AN HOUR. JM / DM
Special weather statement, Jun 27, 3:43 PM CDT, 0 minutes before
IAZALL-272130- SPECIAL WEATHER STATEMENT AND RADAR SUMMARY NATIONAL WEATHER SERVICE DES MOINES IOWA 340 PM CDT WED JUN 27 1990 ...A SEVERE THUNDERSTORM WATCH IS IN EFFECT FOR A LARGE PART OF NORTH CENTRAL AND NORTHEAST IOWA UNTIL 8 PM CDT THIS EVENING... ...A SEVERE THUNDERSTORM WATCH IS IN EFFECT FOR A LARGE PART OF SOUTH CENTRAL AND SOUTHEAST IOWA UNTIL 10 PM THIS EVENING... AT 315 PM CDT...GOLF BALL SIZE HAIL AND 4 TREES BLOWN DOWN IN NORTHEAST CEDAR RAPIDS. AT 334 PM CDT...GOLF BALL SIZE HAIL WAS REPORTED IN THE PALO AREA... NORTHWEST OF CEDAR RAPIDS AT 328 PM CDT...INSTENSE THUNDERSTORMS CONTINUED OVER NORTHEAST IOWA. THESE STORMS...ALONG WITH VERY LARGE AMOUNTS OF RAINFALL...FREQUENT DANGEROUS LIGHTNING...HAVE ALSO PRODUCED STRONG DAMAGING WIND AND GOLF BALL SIZE HAIL AS THEY MOVE SLOWLY SOUTHEAST AT AROUND 10 MILES AN HOUR. THE STRONGEST STORMS WERE LOCATED NEAR CEDAR RAPIDS...NEAR WATERLOO... AND BETWEEN CHARLES CITY AND MASON CITY...CHARLES CITY IS 35 MILES EAST SOUTHEAST OF MASON CITY. PEOPLE IN THE PATH OF THESE STORMS SHOULD BE PREPARED TO SEEK SHELTER IMMEDIATELY SHOULD THREATENING WEATHER APPROACH. WPM/DM
The office that day
Everything else NWS Des Moines, IA issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jun 26, 7:15 PM CDT | Severe Thunderstorm Warning | DMX | Dallas, Guthrie | 30 min |
| Jun 26, 8:18 PM CDT | Severe Thunderstorm Warning | DMX | Adair | 27 min |
| Jun 26, 8:48 PM CDT | Severe Thunderstorm Warning | DMX | Adair, Adams, Union | 27 min |
| Jun 26, 9:00 PM CDT | Severe Thunderstorm Warning | DMX | Butler, Grundy | 35 min |
| Jun 27, 2:22 PM CDT | Severe Thunderstorm Warning | DMX | Mitchell | 53 min |
| Jun 27, 2:52 PM CDT | Severe Thunderstorm Warning | DMX | Floyd | 68 min |
| Jun 27, 3:09 PM CDT | Severe Thunderstorm Warning | DMX | Johnson, Linn | 36 min |
| Jun 27, 3:44 PM CDT | Severe Thunderstorm Warning | DMX | Bremer, Butler | 61 min |
| Jun 27, 4:09 PM CDT | Severe Thunderstorm Warning | DMX | Black Hawk | 66 min |
| Jun 27, 5:08 PM CDT | Severe Thunderstorm Warning | DMX | Benton, Tama | 52 min |
| Jun 27, 5:48 PM CDT | Severe Thunderstorm Warning | DMX | Benton | 30 min |
| Jun 27, 6:12 PM CDT | Severe Thunderstorm Warning | DMX | Johnson, Linn | 33 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.