Alert archive / Iowa / Severe Thunderstorm Warnings in 1996
Severe Thunderstorm Warning 41, NWS Des Moines, IA
NWS Des Moines, IA issued this severe thunderstorm warning at May 19, 1996, 2:40 AM CDT for Howard County, Iowa. It was in force for 35 min. No storm report in the archive falls inside the area while it was in force.
The area
The counties it named.
The facts
- Issued
- May 19, 1996, 2:40 AM CDT (07:40 UTC)
- Expired
- May 19, 1996, 3:15 AM CDT
- In force
- 35 min
- Issued by
- NWS Des Moines, IA
- Area
- Whole counties
County Howard County, IA
The nearest sounding before it
Minneapolis, MN (KMPX), launched 00:00Z, 7.7 hours before the alert went out and 195 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
- 9 J/kg
- Mixed-layer CIN
- -231 J/kg
- Mixed-layer LCL
- 2274 m above ground
- 0-6 km bulk shear
- 76 kt
- 0-1 km storm-relative helicity
- 86 m²/s²
- 0-3 km storm-relative helicity
- 150 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 KALO 190742 SVRALO IAC089-190815- BULLETIN - IMMEDIATE BROADCAST REQUESTED SEVERE THUNDERSTORM WARNING NATIONAL WEATHER SERVICE WATERLOO IA 240 AM CDT SUN MAY 19 1996 THE NATIONAL WEATHER SERVICE IN WATERLOO HAS ISSUED A SEVERE THUNDERSTORM WARNING EFFECTIVE UNTIL 315 AM CDT FOR PEOPLE IN THE FOLLOWING LOCATION... IN NORTHEAST IOWA ...HOWARD COUNTY AT 239 AM...RADAR INDICATED A LINE OF FAST MOVING SEVERE THUNDERSTORMS ENTERING HOWARD COUNTY 30 MILES WEST OF DECORAH. THE TOWNS OF LIME SPRING AND CRESCO ARE IN THE IMMEDIATE PATH OF THIS STORM. WINDS IN EXCESS OF 60 MPH ARE LIKELY. THIS IS A DANGEROUS STORM. IF YOU ARE OUTSIDE SEEK SHELTER AT ONCE INSIDE A REINFORCED BUILDING. PREPARE FOR DAMAGING WINDS IN EXCESS OF 55 MPH...LARGE HAIL...AND DEADLY LIGHTNING. DERNER
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 19, 2:31 AM CDT, 9 minutes before
IAZ004-005-015-023-190900- SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE DES MOINES IA 231 AM CDT SUN MAY 19 1996 THE TORNADO WATCH HAS BEEN CANCELLED FOR EMMET...PALO ALTO... POCAHONTAS...AND KOSS|UTH COUNTIES. HOWEVER...IT REMAINS IN EFFECT UNTIL 400 AM IN WINNEBAGO...HANCOCK AND WORTH COUNTIES. PYTLAK
The office that day
Everything else NWS Des Moines, IA issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| May 19, 1:23 AM CDT | Severe Thunderstorm Warning | DMX | Kossuth | 22 min |
| May 19, 3:13 AM CDT | Severe Thunderstorm Warning | DMX | Winneshiek | 32 min |
| May 19, 5:32 PM CDT | Severe Thunderstorm Warning | DMX | Bremer | 33 min |
| May 19, 5:54 PM CDT | Severe Thunderstorm Warning | DMX | Fayette | 51 min |
| May 19, 6:03 PM CDT | Severe Thunderstorm Warning | DMX | Marshall | 32 min |
| May 19, 6:12 PM CDT | Severe Thunderstorm Warning | DMX | Black Hawk | 33 min |
| May 19, 6:24 PM CDT | Severe Thunderstorm Warning | DMX | Marshall | 31 min |
| May 19, 6:58 PM CDT | Severe Thunderstorm Warning | DMX | Tama | 32 min |
Nearby
Severe Thunderstorm Warnings in Iowa, 1996Every severe thunderstorm warning in 1996
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.