Alert archive / Iowa / Severe Thunderstorm Warnings in 1986
Severe Thunderstorm Warning 114, NWS Des Moines, IA
NWS Des Moines, IA issued this severe thunderstorm warning at Jul 30, 1986, 11:15 PM CDT for Cass County, Iowa. It was in force for 37 min.
The area
The counties it named.
The facts
- Issued
- Jul 30, 1986, 11:15 PM CDT (04:15 UTC)
- Expired
- Jul 30, 1986, 11:52 PM CDT
- In force
- 37 min
- Issued by
- NWS Des Moines, IA
- Area
- Whole counties
County Cass 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 00:00Z, 4.3 hours before the alert went out and 120 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
- 3632 m above ground
- 0-6 km bulk shear
- 41 kt
- 0-1 km storm-relative helicity
- 20 m²/s²
- 0-3 km storm-relative helicity
- 118 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
The text of this product is not in the archive. The NWS text archive before 2002 is incomplete.
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, Jul 30, 5:41 PM CDT, 5 hours 34 minutes before
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</html>Special weather statement, Jul 30, 6:35 PM CDT, 4 hours 40 minutes before
SPECIAL WEATHER STATEMENT AND RADAR SUMMARY NATIONAL WEATHER SERVICE DES MOINES IA 635 PM CDT WED JUL 30 1986 ..SEVERE THUNDERSTORM WATCH FOR SOUTHERN IOWA UNTIL 10 PM CDT.. NO SEVERE WEATHER HAS BEEN REPORTED IN IOWA BETWEEN 530 AND 630 PM. AT 625 PM.. MOST OF THE SHOWERS AND THUNDERSHOWERS HAVE MOVED INTO NORTHEAST MISSOURI. ISOLATED SHOWERS REMAINED IN SOUTHEAST IOWA. THESE SHOWERS WERE LOCATED NEAR BLOOMFIELD AND JUST WEST OF BUhRLINGTON. THE SHOWERS WERE MOVING EAST AT 40 MILES AN HOUR. AN ISOLATED THUNDERSHOWER HAD JUST DEVELOPED OVER NORTHEAST IOWA.. NEAR DECORAH. THE MOVEMENT OF THIS THUNDERSHOWER HAS NOT BEEN DETERMINED. FERRY
Special weather statement, Jul 30, 7:38 PM CDT, 3 hours 37 minutes before
SPECIAL WEATHER STATEMENT AND RADAR SUMMARY NATIONAL WEATHER SERVICE DES MOINES IA 735 PM CDT WED JUL 30 1986 ..SEVERE THUNDERSTORM WATCH FOR SOUTHERN IOWA UNTIL 10 PM CDT.. NO SEVERE WEATHER HAS BEEN REPORTED IN IOWA BETWEEN 630 AND 730 PM. AT 725 PM.. ONLY AN ISOLATED SHOWER REMAINED IN SOUTHEAST IOWA..IT WAS JUST SOUTH OF KEOSAUQUA. THIS SHOWER WAS MOVING EAST AT 40 MILES AN HOUR. AN ISOLATED THUNDERSHOWER WAS INDICATED OVER NORTHEAST IOWA JUST EAST OF DECORAH. AN ISOLATED SHOWER WAS ALSO INDICATED IN THIS PART OF THE STATE SOUTH OF CHARLES CITY. THE SHOWER AND THUNDERSHOWER WERE MOVING EAST AT JUST 5 MILES AN HOUR. FERRY
Special weather statement, Jul 30, 8:00 PM CDT, 3 hours 15 minutes before
<PQ< SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE DES MOINES IA 800 PM CDT WED JUL 30 1986 THE NATIONAL WEATHER SERVICE HAS CANCELLED SEVERE THUNDERSTORM WATCH NUMBER 434 THAT WAS IN EFFECT FOR... PORTIONS OF EASTERN NEBRASKA SOUTHERN IOWA A SMALL PORTION OF NORTHEAST KANSAS PORTIONS OF NORTHERN AND EASTERN MISSOURI SCATTERED THUNDERSHOWERS COULD STILL OCCUR OVER PARTS OF SOUTHERN AND EASTERN IOWA BUT AT THE PRESENT TIME NONE ARE EXPECTED TO BE SEVERE. THE POTENTIAL FOR SEVERE WEATHER MAY STILL EXIST FOR PARTS OF EASTERN IOWA LATER TONIGHT. THE NATIONAL SEVERE STORMS FORECAST CENTER IN KANSAS CITY WILL DETERMINE THIS AFTER A LOOK AT THE NEW EVENING WEATHER INFORMATION. YOU SHOULD CONTINUE TO MONITOR THE LATEST FORECASTS DURING THE NIGHTTIME HOURS. ADAMS
The office that day
Everything else NWS Des Moines, IA issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jul 31, 12:05 AM CDT | Tornado Warning | DMX | Taylor | 40 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.