Alert archive / Iowa / Severe Thunderstorm Warnings in 1986
Severe Thunderstorm Warning 55, NWS Des Moines, IA
NWS Des Moines, IA issued this severe thunderstorm warning at Jun 28, 1986, 9:01 AM CDT for Hancock County, Iowa. It was in force for 59 min.
The area
The counties it named.
The facts
- Issued
- Jun 28, 1986, 9:01 AM CDT (14:01 UTC)
- Expired
- Jun 28, 1986, 10:00 AM CDT
- In force
- 59 min
- Issued by
- NWS Des Moines, IA
- Area
- Whole counties
County Hancock 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, 2.0 hours before the alert went out and 197 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
- 2062 m above ground
- 0-6 km bulk shear
- 43 kt
- 0-1 km storm-relative helicity
- -25 m²/s²
- 0-3 km storm-relative helicity
- 104 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 KALO 281401 SVRALO IAC081-281500- BULLETIN - IMMEDIATE BROADCAST REQUESTED SEVERE THUNDERSTORM WARNING NATIONAL WEATHER SERVICE WATERLOO IA 901 AM CDT SAT JUN 28 1986 THE NATIONAL WEATHER SERVICE HAS ISSUED A SEVERE THUNDERSTORM WARNING EFFECTIVE UNTIL 1000 AM CDT FOR PEOPLE IN THE FOLLOWING COUNTY OF NORTH CENTRAL IOWA...HANCOCK AT 900 AM CDT RADAR INDICATED A SEVERE THUNDERSTORM 30 MILES WEST OF MASON CITY ALONG THE KOSSUTH/HANCOCK COUNTY LINE. IT WAS MOVING SOUTHEAST AT 40 MPH. THIS THUNDERSTORM WILL LIKELY PRODUCE WINDS IN EXCESS OF 60 MPH AND HAIL 3/4 INCH OR LARGER IN DIAMETER. GOLF BALL SIZE HAIL HAS BEEN REPORTED WITH THIS THUNDERSTORM IN KOSSUTH COUNTY.
What 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 28, 3:38 AM CDT, 5 hours 23 minutes before
SPECIAL WEATHER STATEMENT AND RADAR SUMMARY NATIONAL WEATHER SERVICE DES MOINES IA 334 AM CDT SAT JUN 28 1986 AT 330 AM CDT... A VERY STRONG THUNDERSTORM WAS LOCATED OVER NORTH CENTRAL IOWA..ABOUT
Special weather statement, Jun 28, 4:08 AM CDT, 4 hours 53 minutes before
SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE DES MOINES IA 407 AM CDT SAT JUN 28 1986 A VERY STRONG THUNDERSTORM WAS LOCATED OVER NORTH CENTRAL IOWA. IT WAS LOCATED OVER SOUTHERN KOSSUTH COUNTY..EXTENDING INTO NORTHERN HUMBOLDT COUNTY. THE STORM WAS MOVING SOUTHEAST AT 35 MILES AN HOUR AND WILL MOVE INTO THE EAGLE GROVE AND CLARION AREAS BETWEEN 415 AND 515 AM THIS MORNING. PEOPLE IN THE PATH OF THE STORM CAN EXPECT VERY HEAVY RAIN..GUSTY WINDS TO AROUND 40 MILES AN HOUR AND DANGEROUS LIGHTNING. SCHUMACHER
Special weather statement, Jun 28, 5:20 AM CDT, 3 hours 41 minutes before
SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE DES MOINES IA 515 AM CDT SAT JUN 28 1986 AT 515 AM STRONG THUNDERSTORMS WERE LOCATED OVER EXTREME NORTHWEST AND NORTH CENTRAL IOWA..MAINLY OVER DICKINSON..EMMET..AND KOSSUTH COUNTIES. THESE STORMS WERE MOVING SOUTHEAST AT 35 MILES AN HOUR. NO SEVERE WEATHER HAD BEEN REPORTED THROUGH 515AM..HOWEVER..THEY WERE PRODUCING BRIEF VERY HEAVY RAINS..SMALL HAIL..AND WIND GUSTS TO 30 TO 40 MILES AND HOUR IN SOME PLACES. ELLINGSON
Special weather statement, Jun 28, 5:45 AM CDT, 3 hours 16 minutes before
SPECIAL WEATHER STATEMENT AND RADAR SUMMARY NATIONAL WEATHER SERVICE DES MOINES IA 540 AM CDT SAT JUN 28 1986 AT 534 AM CDT... INTENSE THUNDERSTORMS HAD MOVED INTO THE NORTHWEST COUNTIES OF IOWA. THEY WERE IN A 30 MILE WIDE AREA EXTENDING FROM NEAR EMMETSBURG TO ROCK RAPIDS. THE STORMS WERE MOVING SOUTHEAST AT 40 MILES AN HOUR AND WILL MOVE INTO THE ALGONA..SPEMCER AND MILFORD AREAS BETWEEN 540 AND 640 AM THIS MORNING. STRONG GUSTY 5WINDS OF UP TO 60 MILES AN HOUR..VERY HEAVY RAIN..AND HAIL CAN BE EXPECTED WITH THE PASSAGE OF THESE STORMS. PEOPLE SHOULD SEEK A PLACE OF SAFETY IF THREATENING CONDITIONS APPROACH. SCHUMACHER
Special weather statement, Jun 28, 6:39 AM CDT, 2 hours 22 minutes before
SPECIAL WEATHER STATEMENT AND RADAR SUMMARY NATIONAL WEATHER SERVICE DES MOINES IA 636 AM CDT SAT JUN 28 1986 AT 631 AM CDT... VERY STRONG THUNDERSTORMS CONTINUED OVER PARTS OF NORTH CENTRAL IOWA. THEY WRE IN A 20 MILE WIDE AREA EXTENDING FROM 30 MILES SOUTHWEST OF MASON CITY TO ABOUT 15 MILES SOUTHEAST OF SPENCER. THESE STORMS HAVE PRODUCED VERY HEAVY RAIN..SOME HAIL..AND WIND GUSTS OF 30 TO 40 MILES AN HOUR. THEY WERE WEAKENING AS THEY CONTINUED THEIR SOUTHEAST MOVEMENT. THE STRONGEST STORM WAS THE ONE SOUTHEAST OF SPENCER. THIS STORM SHOULD BE NEAR HUMBOLDT BY 745 AM THIS MORNING. ELSEWHERE..SHOWERS AND THUNDERSTORMS WERE SCATTERED OVER MUCH OF THE REST OF NORTH CENTRiAL AND NORTHWEST IOWA. THEY WERE NORTH OF AN IOWA FALLS..FORT DODGE..TO HAWARDEN LINE. ALL OF THE RAIN WAS MOVING SOUTHEAST AT 40 MILES AN HOUR. \ SCHUMACHER
Special weather statement, Jun 28, 7:50 AM CDT, 1 hour 11 minutes before
SPECIAL WEATHER STATEMENT AND RADAR SUMMARY NATIONAL WEATHER SERVICE DES MOINES IA 747 AM CDT SAT JUN 28 1986 ..A SEVERE THUNDERSTORM WATCH IS IN EFFECT FOR THE NORTHEAST TWO THIRDS OF IOWA UNTIL 2 PM.. AT 735 AM CDT... A VERY STRONG THUNDERSTORM CAPABLE OF PRODUCING VERY HEAVY RAIN..HAIL AND WIND GUSTS OF 30 TO 40 MILES AN HOUR ALONG FREQUENT LIGHTNING WAS LOCATED JUST NORTH OF FORT DODGE. THERE HAS BEEN NO INDICATION OF SEVERE WEATHER ASSOCIATED WITH STORM..HOWEVER PEOPLE IN THE PATH OF THIS STORM SHOULD MONITOR CONDITIONS CLOSELY AND BE PREPARED TO TAKE SHELTER. THIS STORMS WAS PART OF AN AREA OF SHOWERS AND STORMS THAT CONTINUED TO MOVE INTO NORTHWEST AND NORTH CENTRAL IOWA FROM SOUTHWEST MINNESOTA. IN ADDITION LIGHT SHOWERS WERE ALSO OCCURRING IN THE SIOUX CITY AREA. THE SHOWERS AND STORMS WERE MOVING SOUTHEAST AT 40 MILES AN HOUR. BARLOW
The office that day
Everything else NWS Des Moines, IA issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jun 28, 5:33 AM CDT | Severe Thunderstorm Warning | DMX | Dickinson | 37 min |
| Jun 28, 8:36 AM CDT | Severe Thunderstorm Warning | DMX | Kossuth | 49 min |
| Jun 28, 12:38 PM CDT | Severe Thunderstorm Warning | DMX | Marion | 22 min |
| Jun 28, 12:53 PM CDT | Severe Thunderstorm Warning | DMX | Mahaska | 47 min |
| Jun 28, 1:12 PM CDT | Severe Thunderstorm Warning | DMX | Monroe, Wapello | 33 min |
Nearby
Severe Thunderstorm Warnings in Iowa, 1986Every severe thunderstorm warning in 1986
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.