Alert archive / Iowa / Severe Thunderstorm Warnings in 1986
Severe Thunderstorm Warning 37, NWS Des Moines, IA
NWS Des Moines, IA issued this severe thunderstorm warning at May 9, 1986, 10:08 PM CDT for Ringgold County, Taylor County, Iowa. It was in force for 22 min.
The area
The counties it named.
The facts
- Issued
- May 9, 1986, 10:08 PM CDT (03:08 UTC)
- Expired
- May 9, 1986, 10:30 PM CDT
- In force
- 22 min
- Issued by
- NWS Des Moines, IA
- Area
- Whole counties
Counties Ringgold County, IA, Taylor 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, 3.1 hours before the alert went out and 172 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
- 3570 m above ground
- 0-6 km bulk shear
- 48 kt
- 0-1 km storm-relative helicity
- 72 m²/s²
- 0-3 km storm-relative helicity
- 110 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 100311 SVRDSM IAC159-173-100340- BULLETIN - IMMEDIATE BROADCAST REQUESTED SEVERE THUNDERSTORM WARNING NATIONAL WEATHER SERVICE DES MOINES IA 1008 PM CDT FRI MAY 9 1986 THE NATIONAL WEATHER SERVICE HAS ISSUED A SEVERE THUNDERSTORM WARNING EFFECTIVE UNTIL 1040 PM CDT FOR PEOPLE IN THE FOLLOWING COUNTIES OF SOUTH CENTRAL IOWA...WESTERN RINGGOLD AND EASTERN TAYLOR AT 1008 PM..DES MOINES WEATHER RADAR INDICATED SEVERAL SEVERE THUNDERSTORMS IN EXTREME SOUTHERN IOWA..ABOUT 30 MILES WEST OF LAMONI OR ABOUT 80 MILES SOUTHWEST OF DES MOINES. THE STORMS WERE MOVING NORTH AT 20 MILES AN HOUR. TOWNS IN THE PATH OF THIS STORM INCLUDE BEDFORD..BLOCKTON..BENTON.. DIAGONAL..AND LENOX. < 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. KS/TRUETT
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, May 9, 6:47 PM CDT, 3 hours 21 minutes before
SPECIAL WEATHER STATEMENT AND RADAR SUMMARY NATIONAL WEATHER SERVICE DES MOINES IA 647 PM CDT FRI MAY 9 1986 ...A SEVERE THUNDERSTORMS WATCH IS IN EFFECT FOR A LARGE PART OF IOWA UNTIL MIDNIGHT... NO SEVERE WEATHER WAS REPORTED IN THE STATE BETWEEN 545 AND 645 PM CDT AT 631 PM CDT... VERY STRONG THUNDERSTORMS WERE SCATTERED OVER CENTRAL IOWA. THE MOST INTENSE STORMS WERE LOCATED ABOUT 15 MILES NORTHEAST AND 10 MILES EAST OF DES MOINES. THESE STORMS WERE PRODUCING PEA TO MARBLE SIZE HAIL AND VERY HEAVY RAIN. MEANWHILE..STRONG THUNDERSTORMS WERE MOVING INTO IOWAS SOUTH CENTRAL COUNTIES BETWEEN LAMONI AND CENTERVILLE. IN ADDITION..WIDELY SCATTERED SHOWERS AND THUNDERSHOWERS DOT THE NORTH CENTRAL AND NORTHEAST COUNTIES OF THE STATE. \ ALL OF THE RAIN WAS MOVING NORTH AT 25 MILES AN HOUR. SCHUMACHER/SIECZYNSKI
Special weather statement, May 9, 9:53 PM CDT, 15 minutes before
SPECIAL WEATHER STATEMENT AND RADAR SUMMARY NATIONAL WEATHER SERVICE DES MOINES IA 947 PM CDT FRI MAY 9 1986 ...A SEVERE THUNDERSTORMS WATCH IS IN EFFECT FOR A LARGE PART OF IOWA UNTIL MIDNIGHT... NO SEVERE WEATHER WAS REPORTED IN IOWA BETWEEN 845 AND 945 PM CDT AT 935 PM CDT... NUMEROUS VERY STRONG THUNDERSTORMS CONTINUED OVER CENTRAL IOWA. THE MOST INTENSE STORMS WERE LOCATED IN AN 20 MILE WIDE AREA EXTENDING FROM 25 MILES NORTHEAST TO 35 MILES NORTHWEST OF DES MOINES. OTHER VERY STRONG STORMS WERE LOCATED JUST WEST OF DES MOINES..AND NEAR GUTHRIE CENTER..ABOUT 40 MILES WEST OF DES MOINES. THESE STORMS WILL PRODUCE CONSIDERABLE HAIL AND VERY HEAVY RAIN. THE VERY STRONG STORMS WERE PART OF A LARGER AREA OF WIDLEY SCATTERED THUNDERSTORMS THAT CONTINUED OVER NORTH CENTRAL AND SOUTH CENTRAL IOWA. THE STRONGEST OF THESE WERE WEST AND SOUTHWEST OF FORT DODGE..AND ABOUT 25 MILES WEST OF LAMONI. THESE STORMS WILL LIKELY PRODUCE SOME SMALL HAIL. THE STORMS WERE ALL MOVING NORTH AT 15 TO 20 MILES AN HOUR. SCHUMACHER/SIECZYNSKI
The office that day
Everything else NWS Des Moines, IA issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| May 9, 7:09 PM CDT | Severe Thunderstorm Warning | DMX | Dallas, Polk | 21 min |
| May 9, 7:15 PM CDT | Tornado Warning | DMX | Dallas, Polk | 30 min |
| May 9, 7:45 PM CDT | Tornado Warning | DMX | Dallas, Polk | 30 min |
| May 9, 7:53 PM CDT | Severe Thunderstorm Warning | DMX | Webster | 37 min |
| May 9, 7:58 PM CDT | Tornado Warning | DMX | Webster | 32 min |
| May 9, 8:16 PM CDT | Tornado Warning | DMX | Dallas, Polk | 44 min |
| May 9, 8:29 PM CDT | Flash Flood Warning | DMX | Dallas, Polk | 3 hr |
| May 9, 8:47 PM CDT | Tornado Warning | DMX | Boone | 43 min |
| May 9, 9:02 PM CDT | Tornado Warning | DMX | Dallas, Polk | 28 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.