Alert archive / Iowa / Severe Thunderstorm Warnings in 1986
Severe Thunderstorm Warning 2, NWS Des Moines, IA
NWS Des Moines, IA issued this severe thunderstorm warning at Apr 4, 1986, 6:42 PM CST for Greene County, Guthrie County, Iowa. It was in force for 48 min.
The area
The counties it named.
The facts
- Issued
- Apr 4, 1986, 6:42 PM CST (00:42 UTC)
- Expired
- Apr 4, 1986, 7:30 PM CST
- In force
- 48 min
- Issued by
- NWS Des Moines, IA
- Area
- Whole counties
Counties Greene County, IA, Guthrie 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, 0.7 hours before the alert went out and 171 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
- 3507 m above ground
- 0-6 km bulk shear
- 35 kt
- 0-1 km storm-relative helicity
- 43 m²/s²
- 0-3 km storm-relative helicity
- 73 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 050043 SVRDSM IAC077-073-050130- BULLETIN - IMMEDIATE BROADCAST REQUESTED SEVERE THUNDERSTORM WARNING NATIONAL WEATHER SERVICE DES MOINES IA 642 PM CST FRI APR 4 1986 THE NATIONAL WEATHER SERVICE HAS ISSUED A SEVERE THUNDERSTORM WARNING EFFECTIVE UNTIL 730 PM CST FOR PEOPLE IN THE FOLLOWING COUNTIES OF WEST CENTRAL IOWA...NORTHERN GUTHRIE AND SOUTHERN GREENE CITES OF BAYARD AND BAGLEY WHICH ARE 50 MILES NORTHWEST OF DES MOINES. AT 635 PM..RADAR SHOWED AN INTENSE THUNDERSTORM OVER NORTHERN GUTHRIE COUNTY. THE STORM WAS MOVING NORTHEAST AT 35 MILES AN HOUR. REMEMBER..A SEVERE THUNDERSTORM CAN PRODUCE DAMAGING WINDS IN EXCESS OF 60 MPH..LARGE HAIL..DEADLY LIGHTNING..AND HEAVY RAINS THAT ,CAN QUICKLY FLOOD LOW LYING AREAS. THESE STORMS CAN AND OCCASIONALLY DO PRODUCE TORNADOES WITH LITTLE OR NO ADVANCE WARNING..SO BE ON THE LOOKOUT AND BE PREPARED TO MOVE TO A PLACE OF SAFETY IF ONE IS SPOTTED. MCQUIRTER
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, Apr 4, 2:34 PM CST, 4 hours 8 minutes before
SPECIAL WEATHER STATEMENT AND RADAR SUMMARY NATIONAL WEATHER SERVICE DES MOINES IA 235 PM CST FRI APR 4 1986 ...TORNADO WATCH FOR PARTS OF CENTRAL AND WESTERN IOWA UNTIL 8PM... AT 230 PM...NO SEVERE THUNDERSTORMS WERE INDICATED IN IOWA. THERE WERE A FEW SHOWERS AND THUNDERSHOWERS IN THE WEST-CENTRAL PART OF THE STATE..FROM 30 MILES EAST OF SIOUX CITY..TO 35 MILES NORTHEAST OF COUNCIL BLUFFS. THE HEAVIEST THUNDERSHOWER WAS LOCATED IN SHELBY COUNTY NEAR HARLAN. THE SHOWERS AND THUNDERSHOWERS WERE MOVING NORTH AT 35 MILES AN HOUR. BINGHAM
Special weather statement, Apr 4, 3:43 PM CST, 2 hours 59 minutes before
SPECIAL WEATHER STATEMENT AND RADAR SUMMARY NATIONAL WEATHER SERVICE DES MOINES IA 340 PM CST FRI APR 4 1986 ...TORNADO WATCH FOR PARTS OF CENTRAL AND WESTERN IOWA UNTIL 8PM... AT 330 PM...NO SEVERE THUNDERSTORMS WERE INDICATED IN IOWA. SHOWERS AND ISOLATED THUNDERSHOWERS..SOME WITH HEAVY RAINS..WERE DEVELOPING OVER THE WEST 1/3RD OF IOWA. THE HEAVIEST THUNDERSHOWERS WERE IN WEST CENTRAL IOWA..IN THE CARROLL AND DENNISON AREAS. THEe SHOWERS AND THUNDERSHOWERS WERE MOVING NORTH AT 35 MILES AN HOUR. COVERAGE AND INTENSITY HAD SHOWN SOME INCREASE. BINGHAM/BARLOW
Special weather statement, Apr 4, 5:45 PM CST, 57 minutes before
SPECIAL WEATHER STATEMENT AND RADAR SUMMARY NATIONAL WEATHER SERVICE DES MOINES IA 545 PM CST FRI APR 4 1986 ...TORNADO WATCH FOR PARTS OF CENTRAL AND WESTERN IOWA UNTIL 8PM... AT 535 PM...NO SEVERE THUNDERSTORMS WERE INDICATED IN IOWA. HOWEVER.. SCATTERED SHOWERS AND ISOLATED THUNDERSTORMS CONTINUED OVER PARTS OF NORTHWEST..CENTRAL..AND SOUTH-CENTRAL IOWA. HEAVIEST THUNDERSHOWERS WERE LOCATED IN NORTHWEST IOWA ABOUT 40 MILES WEST OF FORT DODGE NEAR SAC CITY. ADDITIONAL THUNDERSTORMS WERE LOCATED IN NORTHEAST MISSOURI. THESE STORMS WILL ENTER SOUTHEAST IOWA BY 6PM. MOVEMENT OF ALL SHOWERS AND STORMS WAS NORTH AT 35 MILES AN HOUR. COVERAGE AND INTENSITY WAS DECREASING ACROSS WESTERN IOWA. BINGHAM
Special weather statement, Apr 4, 6:17 PM CST, 25 minutes before
SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE DES MOINES IA 617 PM CST FRI APR 4 1986 AT 602 PM..GOLFBALL SIZE HAIL WAS REPORTED SOUTHWEST OF LIBERTYVILLE IN JEFFERSON COUNTY ABOUT 20 MILES SOUTHEAST OF OTTUMWA BY CITIZEN. AT 610 PM CST..RADAR SHOWED RAPID DECREASE INTENSITY. THE STORM HAD WEAKEN CONSIDERABLY SINCE 6PM. PERSON IN JEFFERSON COUNTY CAN EXPECTED SMALL HAIL..BRIEF HEAVY RAIN AND GUSTY WINDS. MCQUIRTER
The office that day
Everything else NWS Des Moines, IA issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Apr 4, 7:19 PM CST | Severe Thunderstorm Warning | DMX | Calhoun, Greene | 41 min |
| Apr 4, 7:40 PM CST | Severe Thunderstorm Warning | DMX | Webster | 25 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.