Alert archive / Iowa / Severe Thunderstorm Warnings in 1990
Severe Thunderstorm Warning 80, NWS Des Moines, IA
NWS Des Moines, IA issued this severe thunderstorm warning at Jun 16, 1990, 10:30 PM CDT for Webster County, Wright County, Iowa. It was in force for 45 min.
The area
The counties it named.
The facts
- Issued
- Jun 16, 1990, 10:30 PM CDT (03:30 UTC)
- Expired
- Jun 16, 1990, 11:15 PM CDT
- In force
- 45 min
- Issued by
- NWS Des Moines, IA
- Area
- Whole counties
Counties Webster County, IA, Wright 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 00:00Z, 3.5 hours before the alert went out and 254 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
- NaN m above ground
- 0-6 km bulk shear
- 47 kt
- 0-1 km storm-relative helicity
- 98 m²/s²
- 0-3 km storm-relative helicity
- 185 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 170330
SVRDSM
IAC187-197-170415-
BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE DES MOINES IA
1030 PM CDT SAT JUN 16 1990
THE NATIONAL WEATHER SERVICE IN DES MOINES HAS ISSUED A
SEVERE THUNDERSTORM WARNING EFFECTIVE UNTIL 1115 PM CDT
FOR PEOPLE IN THE FOLLOWING COUNTIES...
IN CENTRAL IOWA
...WEBSTER
IN NORTH CENTRAL IOWA
...WRIGHT
AT 1030 PM...RADAR CONTINUED TO INDICATE A LINE OF SEVERE
THUNDERSTORMS EXTENDING FROM SOUTHEAST KOSSUTH COUNTY...OR SOME 45 MILESNORTH OF FORT DODGE...TO JUST NORTHWEST OF FORT DODGE.
THE LINE OF STORMS CONTINUED RACING EAST AT 40 MILES AN HOUR...AND
WILL BE AFFECTING THE CITIES OF CLARION...AND FORT DODGE.
SIGNIFICANT WIND DAMAGE IS POSSIBLE WITH THIS LINE OF STORMS.
THIS IS A DANGEROUS STORM. IF YOU ARE IN ITS PATH YOU SHOULD
PREPARE FOR DAMAGING WIND IN EXCESS OF 70 MPH...LARGE HAIL...AND
DEADLY LIGHTNING. PEOPLE OUTSIDE SHOULD M#OVE TO A SHELTER...
PREFERABLY INSIDE A STRONG BUILDING BUT STAY AWAY FROM WINDOWS.
TRUETTWhat 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 16, 9:15 PM CDT, 1 hour 15 minutes before
IAZ001-005-009-170230- SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE DES MOINES IA 915 PM CDT SAT JUN 16 1990 ...STRONG THUNDERSTORMS MOVING ACROSS NORTHWEST AND WEST CENTRAL IOWA... AT 910 PM...WEATHER RADAR INDICATED A LINE OF STRONG THUNDERSTORMS OVER NORTHWEST AND WEST CENTRAL IOWA. THE LINE OF STORMS EXTENDED FROM THE SPIRIT LAKE...IOWA GREAT LAKES AREA...TO JUST NORTH OF COUNCIL BLUFFS. EXTREMELY HEAVY RAINS...WINDS OF UP TO 50 MILES AN HOUR...AND SOME SMALL HAIL HAS BEEN OCCURRING WITH THIS LINE OF STORMS. SOME OF THESE STORMS COULD POSSIBLY BECOME SEVERE AS WELL...WHICH MEANS WINDS OF 60 MILES AN HOUR AND GREATER...AND HAIL 3/4 INCH IN DIAMETER OR LARGER. REMEMBER...TORNADO WATCHES ARE IN EFFECT FOR NORTHWEST IOWA UNTIL 11 PM...AND WESTERN IOWA UNTIL 1 AM. PEOPLE IN NORTHWEST AND WEST CENTRAL IOWA SHOULD REMAIN ALERT. TRUETT
Special weather statement, Jun 16, 9:16 PM CDT, 1 hour 14 minutes before
IAZALL-170245- SPECIAL WEATHER STATEMENT AND RADAR SUMMARY NATIONAL WEATHER SERVICE DES MOINES IA 915 PM CDT SAT JUN 16 1990 ...FLASH FLOOD WATCH FOR ALL OF IOWA TONIGHT... ...TORNADO WATCH FOR EXTREME SOUTHEAST IOWA UNTIL 1 AM SUNDAY MORNING... ...TORNADO WATCH FOR WESTERN IOWA UNTIL 100 AM SUNDAY MORNING... ...TORNADO WATCH FOR EXTREME NORTHWEST IOWA UNTIL 11 PM TONIGHT... AT 910 PM...A LINE OF INTENSE THUNDERSTORMS...WITH VERY HEAVY RAINS EXTENDED FROM THE IOWA GREAT LAKES NEAR SPENCER AND JUST EAST OF SIOUX CITY IN NORTHWEST IOWA. STRONG GUSTY WINDS IN EXCESS OF 50 MPH...HAIL AND DANGEROUS LIGHTNING IS LIKELY WITH THESE STORMS. ANOTHER AREA OF INTENSE THUNDERSTORMS WERE OVER EXTREME SOUTH CENTRAL IOWA ...NEAR THE TOWNS OF CENTERVILLE...RATHBUN LAKE RECREATIONAL AREA AND WEST OF BLOOMFIELD. BOATERS AND CAMPERS ALONG THE RATHBUN LAKE AREA SHOULD SEEK SAFE HARBOR OR SHELTER IMMEDIATELY. / THE STORMS OVER NORTHWEST IOWA WERE MOVING EAST NORTHEAST 30 TO 35 MPH...WHILE THE STORMS OVER SOUTH CENTRAL IOWA WERE MOVING EAST SOUTHEAST AROUND 20 MILES AN HOUR. JM/BARLOW
Special weather statement, Jun 16, 9:37 PM CDT, 53 minutes before
IAZALL-170300- SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE DES MOINES IA 937 PM CDT SAT JUN 16 1990 ...FLASH FLOOD WATCH FOR ALL OF IOWA TONIGHT... ...TORNADO WATCH FOR EXTREME SOUTHEAST IOWA UNTIL 1 AM SUNDAY MORNING... ...TORNADO WATCH FOR WESTERN IOWA UNTIL 100 AM SUNDAY MORNING... ...TORNADO WATCH FOR EXTREME NORTHWEST IOWA UNTIL 11 PM TONIGHT... AT 930 PM...A LINE OF INTENSE THUNDERSTORMS WAS OCCURRING OVER NORTH- WEST IOWA. THE STRONGEST OF THESE STORMS WAS NEAR STORM LAKE. PEOPLE IN THE CITIES LAURENS...POCAHONTAS...EMMETSBURG...AND SPENCER AREA SHOULD BE ON THE LOOKOUT FOR THREATENING WEATHER. SEVERAL REPORTS OF 60 TO 70 MPH WINDS HAVE BEEN REPORTED IN THE SPENCER AREA. VERY HEAVY RAINS...HAIL AND WINDS IN EXCESS OF 60 MPH ARE LIKELY WITH THESE STORMS. JM THE STORMS OVER NORTHWEST IOWA WERE MOVING EAST NORTHEAST 30 TO 35 MPH...WHILE THE STORMS OVER SOUTH CENTRAL IOWA WERE MOVING EAST SOUTHEAST AROUND 20 MILES AN HOUR. JM/BARLOW
Special weather statement, Jun 16, 9:52 PM CDT, 38 minutes before
IAZALL-170300- SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE DES MOINES IA 950 PM CDT SAT JUN 16 1990 ...FLASH FLOOD WATCH FOR ALL OF IOWA TONIGHT... ...TORNADO WATCH FOR EXTREME SOUTHEAST IOWA UNTIL 1 AM SUNDAY MORNING... ...TORNADO WATCH FOR WESTERN IOWA UNTIL 100 AM SUNDAY MORNING... ...TORNADO WATCH FOR EXTREME NORTHWEST IOWA UNTIL 11 PM TONIGHT... AT 940 PM...A LINE OF INTENSE THUNDERSTORMS WAS OCCURRING OVER NORTH- WEST AND PARTS OF WEST CENTRAL IOWA. THESE STORMS WERE LOCATED IN A LINE THAT EXTENDED FROM SPENCER...POCOHANTAS...IDA GROVE...TO JUST WEST OF DENISON IN WEST CENTRAL IOWA. THESE STORMS WERE MOVING EAST NORTHEAST AT 25 MILES AN HOUR AND SHOULD BE AFFECTING THE TOWNS OF ALGONA...HUMBOLDT ROCKWELL CITY AND CARROLL BETWEEN 1030 AND 1100 PM THIS EVENING. THESE STORMS WILL PRODUCE VERY HEAVY RAINS...WINDS IN EXCESS OF 50 MILES AN HOUR...HAIL AND DANGEROUS LIGHTNING. / ANOTHER CLUSTER OF INTENSE THUNDERSTORMS WERE LOCATED OVER EXTREME SOUTH CENTRAL IOWA NEAR THE TOWNS OF CENTERVILLE AND MOULTON OR 35 MILES SOUTHWEST OF OTTUMWA. THE STORMS OVER NORTHWEST IOWA WERE MOVING EAST AT 30 TO 35 MPH ...WHILE THE STORMS OVER SOUTH CENTRAL IOWA WERE MOVING EAST 10 TO 15 MPH. JM/BARLOW
Special weather statement, Jun 16, 9:57 PM CDT, 33 minutes before
IAZALL-170400- SPECIAL WEATHER STATEMENT AND RADAR SUMMARY NATIONAL WEATHER SERVICE DES MOINES IA 950 PM CDT SAT JUN 16 1990 ...FLASH FLOOD WATCH FOR ALL OF IOWA TONIGHT... ...TORNADO WATCH FOR EXTREME SOUTHEAST IOWA UNTIL 1 AM SUNDAY MORNING... ...TORNADO WATCH FOR WESTERN IOWA UNTIL 100 AM SUNDAY MORNING... ...TORNADO WATCH FOR EXTREME NORTHWEST IOWA UNTIL 11 PM TONIGHT... AT 940 PM...A LINE OF INTENSE THUNDERSTORMS WAS OCCURRING OVER NORTH- WEST AND PARTS OF WEST CENTRAL IOWA. THESE STORMS WERE LOCATED IN A LINE THAT EXTENDED FROM SPENCER...POCOHANTAS...IDA GROVE...TO JUST WEST OF DENISON IN WEST CENTRAL IOWA. THESE STORMS WERE MOVING EAST NORTHEAST AT 25 MILES AN HOUR AND SHOULD BE AFFECTING THE TOWNS OF ALGONA...HUMBOLDT ROCKWELL CITY AND CARROLL BETWEEN 1030 AND 1100 PM THIS EVENING. THESE STORMS WILL PRODUCE VERY HEAVY RAINS...WINDS IN EXCESS OF 50 MILES AN HOUR...HAIL AND DANGEROUS LIGHTNING. / ANOTHER CLUSTER OF INTENSE THUNDERSTORMS WAS LOCATED OVER EXTREME SOUTH CENTRAL IOWA NEAR THE TOWNS OF CENTERVILLE AND MOULTON OR 35 MILES SOUTHWEST OF OTTUMWA. THE STORMS OVER NORTHWEST IOWA WERE MOVING EAST AT 20 TO 30 MPH ...WHILE THE STORMS OVER SOUTH CENTRAL IOWA WERE MOVING EAST 10 TO 15 MPH. JM/BARLOW
Special weather statement, Jun 16, 10:19 PM CDT, 11 minutes before
IAZALL-170430- SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE DES MOINES IA 1020 PM CDT SAT JUN 16 1990 ...FLASH FLOOD WATCH FOR ALL OF IOWA TONIGHT... ...TORNADO WATCH FOR EASTERN IOWA UNTIL 400 AM SUNDAY MORNING... ...TORNADO WATCH FOR WESTERN IOWA UNTIL 100 AM SUNDAY MORNING... AT 1015 PM...A LINE OF INTENSE THUNDERSTORMS WAS OCCURRING OVER PARTS OF NORTH CENTRAL INTO WEST CENTRAL IOWA. THESE STORMS HAVE PRODUCE VERY HEAVY RAINS...STRONG GUSTY WINDS IN EXCESS OF 60 MILES AN HOUR AND SMALL HAIL. PEOPLE IN THE TOWNS OF HUMBOLDT...ESTHERVILLE...EMMETSBURG... ALGONA...ROCKWELL CITY...AND CARROLL SHOULD BE ON THE LOOKOUT FOR THESE STORMS AND MOVE TO PLACE OF SAFETY IF SEVERE WEATHER THREATEN YOUR AREA. ANOTHER CLUSTER OF INTENSE THUNDERSTORMS ABOUT 20 MILES SOUTHWEST OF OTTUMWA AND JUST EAST OF LAKE RATHBUN IN EXTREME SOUTH CENTRAL IOWA. THIS STORM CONTINUED TO SHOW VERY LITTLE MOVEMENT. VERY HEAVY RAINS AND DAMAGING WINDS ARE LIKELY WITH THIS STORM. THE STORMS OVER NORTH CENTRAL AND WEST CENTRAL IOWA WERE MOVING EAST AT 30 MILES AN HOUR. JM/BARLOW
The office that day
Everything else NWS Des Moines, IA issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jun 16, 7:17 PM CDT | Tornado Warning | DMX | Lucas | 18 min |
| Jun 16, 7:33 PM CDT | Tornado Warning | DMX | Monroe | 27 min |
| Jun 16, 9:03 PM CDT | Tornado Warning | DMX | Appanoose | 27 min |
| Jun 16, 9:29 PM CDT | Tornado Warning | DMX | Buena Vista | 31 min |
| Jun 16, 9:33 PM CDT | Severe Thunderstorm Warning | DMX | Clay, Palo Alto, Pocahontas | 42 min |
| Jun 16, 9:45 PM CDT | Tornado Warning | DMX | Appanoose | 30 min |
| Jun 16, 9:50 PM CDT | Severe Thunderstorm Warning | DMX | Humboldt, Kossuth | 40 min |
| Jun 16, 9:57 PM CDT | Tornado Warning | DMX | Van Buren | 33 min |
| Jun 16, 9:57 PM CDT | Tornado Warning | DMX | Monroe | 33 min |
| Jun 16, 10:16 PM CDT | Tornado Warning | DMX | Appanoose, Davis, Monroe, Wapello | 29 min |
| Jun 16, 10:17 PM CDT | Severe Thunderstorm Warning | DMX | Emmet | 28 min |
| Jun 16, 10:53 PM CDT | Tornado Warning | DMX | Jones | 37 min |
| Jun 16, 10:53 PM CDT | Tornado Warning | DMX | Jefferson, Van Buren | 37 min |
| Jun 16, 11:11 PM CDT | Severe Thunderstorm Warning | DMX | Hamilton | 49 min |
| Jun 16, 11:34 PM CDT | Severe Thunderstorm Warning | DMX | Jefferson, Van Buren | 26 min |
| Jun 16, 11:47 PM CDT | Severe Thunderstorm Warning | DMX | Audubon | 28 min |
| Jun 17, 3:14 AM CDT | Flash Flood Warning | DMX | Crawford | 3 hr |
| Jun 17, 4:09 AM CDT | Flash Flood Warning | DMX | Washington | 3 hr |
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.