Alert archive / Iowa / Severe Thunderstorm Warnings in 1986
Severe Thunderstorm Warning 11, NWS Quad Cities, IA
NWS Quad Cities, IA issued this severe thunderstorm warning at Jul 19, 1986, 5:35 PM CDT for Louisa County, Iowa. It was in force for 40 min.
The area
The counties it named.
The facts
- Issued
- Jul 19, 1986, 5:35 PM CDT (22:35 UTC)
- Expired
- Jul 19, 1986, 6:15 PM CDT
- In force
- 40 min
- Issued by
- NWS Quad Cities, IA
- Area
- Whole counties
County Louisa 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
Peoria Regional, IL (KPIA), launched 12:00Z, 10.6 hours before the alert went out and 152 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
- 754 J/kg
- Mixed-layer CIN
- -146 J/kg
- Mixed-layer LCL
- 1522 m above ground
- 0-6 km bulk shear
- 10 kt
- 0-1 km storm-relative helicity
- 108 m²/s²
- 0-3 km storm-relative helicity
- 68 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 19, 4:06 PM CDT, 1 hour 29 minutes before
SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE MOLINE IL 405 PM CDT SAT JUL 19 1986 ...TORNADO WATCH UNTIL 10 PM FOR EXTREME EAST CENTRAL AND SOUTHEAST IOWA AND NORTHWEST ILLINOIS... AT 4PM A LINE OF INTENSE THUNDERSTORMS WAS BEGINNING TO DEVELOP OVER EAST CENTRAL IOWA EXTENDING FROM JUST SOUTH OF DUBUQUE TO 15 MILES SOUTHWEST OF IOWA CITY. PERSONS IN EAST CENTRAL IOWA ESPECIALLY THOSE ATTENDING OUTDOOR ACTIVES SHOULD GIVE THEMSELVES PLENTY OF TIME TO SEEK SHELTER BEFORE THREATENING WEATHER OCCURS AND LISTEN FOR FURTHER STATEMENTS AND POSSIBLE WARNINGS. THESE STORMS WILL BE MOVING ACROSS PARTS OF CLINTON..CEDAR AND MUSCATINE COUNTIES OF EAST CENTRAL IOWA BETWEEN 4 AND 5PM. FOBERT
Special weather statement, Jul 19, 5:09 PM CDT, 26 minutes before
SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE MOLINE IL 405 PM CDT SAT JUL 19 1986 ...TORNADO WATCH UNTIL 10 PM FOR EXTREME EAST CENTRAL AND SOUTHEAST IOWA AND NORTHWEST ILLINOIS... AT 5PM A LINE OF INTENSE THUNDERSTORMS WERE OCCURRING OVER EASTERN IOWA. THE LEADING EDGE EXTENDED FROM 15 MILES WEST OF FREEPORT TO NEAR BRIGHTON IN WASHINGTON COUNTY IN EASTERN IOWA. THE MOST SEVERE STORMS WERE OCCURRING JUST NORTHWEST OF SAVANNA ILLINOIS WERE PEA SIZE HAIL WAS REPORTED..WHILE ANOTHER SERVERE STORM WAS OCCURRING 15 MILES WEST OF COUMBUS JUNCTION. PERSONS IN EAST CENTRAL IOWA ESPECIALLY THOSE ATTENDING OUTDOOR ACTIVES SHOULD GIVE THEMSELVES PLENTY OF TIME TO SEEK SHELTER BEFORE THREATEENING WEATHER OCCURS AND LISTEN FOR FURTHER STATEMENTS AND POSSIBLE WARNINGS. THESE STORMS WILL BE MOVING ACROSS PARTS OF CLINTON..SCOTT..
Special weather statement, Jul 19, 5:14 PM CDT, 21 minutes before
SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE MOLINE IL 405 PM CDT SAT JUL 19 1986 ...TORNADO WATCH UNTIL 10 PM FOR EXTREME EAST CENTRAL AND SOUTHEAST IOWA AND NORTHWEST ILLINOIS... AT 5PM A LINE OF INTENSE THUNDERSTORMS WERE OCCURRING OVER EASTERN IOWA. THE LEADING EDGE EXTENDED FROM 15 MILES WEST OF FREEPORT TO NEAR BRIGHTON IN WASHINGTON COUNTY IN EASTERN IOWA. THE MOST SEVERE STORMS WERE OCCURRING JUST NORTHWEST OF SAVANNA ILLINOIS WERE PEA SIZE HAIL WAS REPORTED..WHILE ANOTHER SERVERE STORM WAS OCCURRING 15 MILES WEST OF COLMBUS JUNCTION. PERSONS IN EAST CENTRAL IOWA ESPECIALLY THOSE ATTENDING OUTDOOR ACTIVES SHOULD GIVE THEMSELVES PLENTY OF TIME TO SEEK SHELTER. THESE SEVEMRE STORMS ARE MOVING TO THE SOUTHEAST AT AROUND 20 MPH AND SHOULD BE ENTERING EASTERN CLINTON..SCOTT EASTERN MUSCATINE AND LOUISA COUNTIES AMBRIDGE
The office that day
Everything else NWS Quad Cities, IA issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jul 19, 5:57 PM CDT | Tornado Warning | DVN | Des Moines, Henry | 43 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.