Alert archive / Iowa / Severe Thunderstorm Warnings in 1990
Severe Thunderstorm Warning 78, NWS Des Moines, IA
NWS Des Moines, IA issued this severe thunderstorm warning at Jun 16, 1990, 9:50 PM CDT for Humboldt County, Kossuth County, Iowa. It was in force for 40 min.
The area
The counties it named.
The facts
- Issued
- Jun 16, 1990, 9:50 PM CDT (02:50 UTC)
- Expired
- Jun 16, 1990, 10:30 PM CDT
- In force
- 40 min
- Issued by
- NWS Des Moines, IA
- Area
- Whole counties
Counties Humboldt County, IA, Kossuth 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, 2.8 hours before the alert went out and 212 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 170248
SVRDSM
IAC091-109-170330-
BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE DES MOINES IA
950 PM CDT SAT JUN 16 1990
THE NATIONAL WEATHER SERVICE IN DES MOINES HAS ISSUED A
SEVERE THUNDERSTORM WARNING EFFECTIVE UNTIL 1030 PM CDT
FOR PEOPLE IN THE FOLLOWING COUNTIES...
IN NORTH CENTRAL IOWA
...HUMBOLDT...SOUTHERN KOSSUTH
AT 950 PM...WEATHER RADAR CONTINUED TO INDICATE A LINE OF SEVERE
THUNDERSTORMS EXTENDING FROM EASTERN PALO-ALTO COUNTY TO EASTERN
POCAHONTAS COUNTY...OR FROM 30 MILES EAST OF SPENCER TO 25 MILES
NORTHWEST OF FORT DODGE.
THIS LINE OF STORMS WAS MOVING EAST AT 30 TO 40 MILES AN HOUR...AND
WILL BE AFFECTING THE CITIES OF ALGONA...OTTOSEN...BRADGATE...
AND HUMBOLDT. SIGNIFICANT WIND DAMAGE IS VERY POSSIBLE WITH THE
PASSAGE OF THESE STORMS. REMEMBER...STRAIGHT LINE WINDS FROM A SEVERE
THUNDERSTORM CAN PRODUCE DAMAGE SIMILAR TO THAT OF A TORNADO.
WINDS OF OVER 70 MILES AN HOUR WERE REPORTED WITH THE PASSAGE OF
THESE STORMS IN THE SPENCER AREA.
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 MOVE 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, 8:17 PM CDT, 1 hour 33 minutes before
IAZALL-170145- SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE DES MOINES IA 816 PM CDT SAT JUN 16 1990 ...FLASH FLOOD WATCH FOR ALL OF IOWA TONIGHT... ...SEVERE THUNDERSTORM WATCH FOR EXTREME SOUTHEAST IOWA UNTIL 7PM... ...TORNADO WATCH FOR WESTERN IOWA UNTIL 100 AM SUNDAY MORNING... ...TORNADO WATCH FOR EXTREME NORTHWEST IOWA UNTIL 11 PM TONIGHT... AT 810 PM...AN AREA OF STRONG THUNDERSTORMS CONTINUED OVER NORTHWEST IOWA. THESE STORMS WERE LOCATED FROM SIOUX CITY...NORTHEAST TO IOWA GREAT LAKES NEAR SPRIT LAKE. VERY HEAVY RAINS...SMALL HAIL AND DANGEROUS LIGHTNING ARE POSSIBLE WITH THESE STORMS. ANOTHER AREA OF STRONG THUNDERSTORMS WERE OCCURRING OVER SOUTH CENTRAL IOWA. THESE STORMS WERE LOCATED BETWEEN EDDYVILLE...OTTUMWA AND SOUTH TO CENTERVILLE. THE STORM NEAR ALBIA HAD DECREASE IN INTENISITY SINCE 745 PM. THE STORMS OVER NORTHWEST IOWA WERE MOVING NORTHEAST AT 30 MILES AN HOUR... WHILE STORMS OVER SOUTH CENTRAL IOWPA WERE MOVING EAST AT 15 TO 20 MILES AN HOUR. JM/BARLOW
Special weather statement, Jun 16, 8:31 PM CDT, 1 hour 19 minutes before
IAZALL-170145- SPECIAL WEATHER STATEMENT...CORRECTION TO 2ND LINE OF HEADLINES NATIONAL WEATHER SERVICE DES MOINES IA 830 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 810 PM...AN AREA OF STRONG THUNDERSTORMS CONTINUED OVER NORTHWEST IOWA. THESE STORMS WERE LOCATED FROM SIOUX CITY...NORTHEAST TO IOWA GREAT LAKES NEAR SPRIT LAKE. VERY HEAVY RAINS...SMALL HAIL AND DANGEROUS LIGHTNING ARE POSSIBLE WITH THESE STORMS. ANOTHER AREA OF STRONG THUNDERSTORMS WERE OCCURRING OVER SOUTH CENTRAL IOWA. THESE STORMS WERE LOCATED BETWEEN EDDYVILLE...OTTUMWA AND SOUTH TO CENTERVILLE. THE STORM NEAR ALBIA HAD DECREASE IN INTENISITY SINCE 745 PM. THE STORMS OVER NORTHWEST IOWA WERE MOVING NORTHEAST AT 30 MILES ApN HOUR... WHILE STORMS OVER SOUTH CENTRAL IOWA WERE MOVING EAST AT 15 TO 20 MILES AN HOUR. JM/BARLOW
Special weather statement, Jun 16, 8:52 PM CDT, 58 minutes before
IAZALL-170245- SPECIAL WEATHER STATEMENT AND RADAR SUMMARY NATIONAL WEATHER SERVICE DES MOINES IA 850 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 835 PM...AN AREA OF INTENSE THUNDERSTORMS...WITH VERY HEAVY RAINS WERE OVER NORTHWEST IOWA. THESE STORMS EXTENDED FROM SIOUX CITY AND SOUTH TO ONAWA OR 50 MILES NORTH OF COUNCIL BLUFFS. SCATTERED STRONG THUNDERSTORMS WERE ALSO OCCURRING BETWEEN ORANGE CITY AND SPRIT LAKE JUST WEST OF SPENCER. ANOTHER AREA OF STRONG THUNDERSTORMS CONTINUED OVER SOUTH CENTRAL IOWA. THESE STORMS WERE LOCATED ABOUT 5 MILES EAST OF EDDYVILLE...SOUTHWEST TO IOWA/MISSOURI BORDER NEAR CENTERVILLE. THE STORMS OVER NORTHWEST IOWA WERE MOVING NORTHEAST AT 30 MILES AN HOUR... WHILE STORMS OVER SOUTH CENTRAL IOWA WERE MOVING EAST AT 15 TO 20 MILES AN HOUR. JM/BARLOW
Special weather statement, Jun 16, 9:15 PM CDT, 35 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, 34 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, 13 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
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, 9:57 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, 10:30 PM CDT | Severe Thunderstorm Warning | DMX | Webster, Wright | 45 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.