Alert archive / Iowa / Severe Thunderstorm Warnings in 1986
Severe Thunderstorm Warning 85, NWS Des Moines, IA
NWS Des Moines, IA issued this severe thunderstorm warning at Jul 19, 1986, 5:04 AM CDT for Buena Vista County, Iowa. It was in force for 41 min.
The area
The counties it named.
The facts
- Issued
- Jul 19, 1986, 5:04 AM CDT (10:04 UTC)
- Expired
- Jul 19, 1986, 5:45 AM CDT
- In force
- 41 min
- Issued by
- NWS Des Moines, IA
- Area
- Whole counties
County Buena Vista 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, 10.1 hours before the alert went out and 187 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
- 3622 m above ground
- 0-6 km bulk shear
- 16 kt
- 0-1 km storm-relative helicity
- 75 m²/s²
- 0-3 km storm-relative helicity
- 131 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 191006 SVRDSM IAC021-191045- BULLETIN - IMMEDIATE BROADCAST REQUESTED SEVERE THUNDERSTORM WARNING NATIONAL WEATHER SERVICE DES MOINES IA 504 AM CDT SAT JUL 19 1986 THE NATIONAL WEATHER SERVICE HAS ISSUED A SEVERE THUNDERSTORM WARNING EFFECTIVE UNTIL 545 AM CDT FOR PEOPLE IN THE FOLLOWING COUNTY OF NORTHWEST IOWA...BUENA VISTA AT 500 AM CDT RADAR INDICATED A SEVERE THUNDERSTORM ENTERING WESTERN BUENA VISTA COUNTY..MOVING EAST AT AROUND 40 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 A;DVANCE WARNING..SO BE ON THE LOOKOUT AND BE PREPARED TO MOVE TO A PLACE OF SAFETY IF ONE IS SPOTTED. FORSTER/KS
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, 3:43 AM CDT, 1 hour 21 minutes before
SPECIAL WEATHER STATEMENT AND RADAR SUMMARY NATIONAL WEATHER SERVICE DES MOINES IA 340 AM CDT SAT JUL 19 1986 AT 335 AM CDT...WIDELY SCATTERED SHOWERS AND ISOLATED THUNDERSHOWERS CONTINUED OVER THE FAR NORTHWEST CORNER OF IOWA. THE RAINFALL WAS NORTH AND WEST OF A IOWA GREAT LAKES/SIOUX CITY LINE. ISOLATED STRONG STORMS IN EXTREME SOUTHEAST SOUTH DAKOTA WILL BE ENTERING NORTHWEST IOWA NEAR AKRON AND HAWARDEN..35 MILES NORTH OF SIOUX CITY BY 400 AM. VERY HEAVY RAINS..BRIEF GUSTY WINDS AND DANGEROUS LIGHTNING CAN BE EXPECTED WITH THE PASSAGE OF THESE STORMS. THE SHOWERS AND STORMS WERE MOVING EAST AT 40 MILES AN HOUR. SIECZYNSKI
Special weather statement, Jul 19, 4:44 AM CDT, 20 minutes before
SPECIAL WEATHER STATEMENT AND RADAR SUMMARY NATIONAL WEATHER SERVICE DES MOINES IA 440 AM CDT SAT JUL 19 1986 AT 430 AM CDT...AN ISOLATED STRONG THUNDERSTORM WAS IN NORTHWEST IOWA. THE STORM WAS SOUTH OF LEMARS..25 MILES NORTHEAST OF SIOUX CITY. VERY HEAVY RAINS..GUSTY WINDS..SMALL HAIL AND DEADLY LIGHTNING CAN BE EXPECTED WITH THIS STORM. NUMEROUS SHOWERS AND ISOLATED THUNDERSHOWERS CONTINUED OVER THE NORTHWEST COUNTIES..NORTH AND W EST OF A SPIRIT LAKE/SIOUX CITY LINE. IN ADDITION..SHOWERS HAD ENTERED THE NORTHEAST PART OF THE STATE NEAR CRESCO..60 MILES NORTH OF WATERLOO. THE SHOWERS AND STORMS WERE MOVING EAST AT 35 MILES AN HOUR. SIECZYNSKI
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.