Alert archive / Iowa / Severe Thunderstorm Warnings in 2012
Severe Thunderstorm Warning 4, NWS Des Moines, IA
NWS Des Moines, IA issued this severe thunderstorm warning at Mar 29, 2012, 8:13 PM CDT for Adair County, Cass County, Iowa. It was in force for 47 min. No storm report in the archive falls inside the area while it was in force.
The area
The outline as issued.
The facts
- Issued
- Mar 29, 2012, 8:13 PM CDT (01:13 UTC)
- Expired
- Mar 29, 2012, 9:00 PM CDT
- In force
- 47 min
- Issued by
- NWS Des Moines, IA
- Area
- Storm-based polygon
- Hail
- 1.5 in
- Wind
- 60.0 mph
Counties Adair County, IA, Cass County, IA
The radar
The Des Moines radar (KDMX), 109 km from the middle of the area, began a volume at 01:14 UTC, the scan nearest the moment this went out.
Open the radar archive at this moment
The archived warnings, watches and discussions in force at that minute are drawn over the scan, this one among them.
The nearest sounding before it
Omaha, NE (KOAX), launched 00:00Z, 1.2 hours before the alert went out and 126 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
- 761 J/kg
- Mixed-layer CIN
- -64 J/kg
- Mixed-layer LCL
- 647 m above ground
- 0-6 km bulk shear
- 37 kt
- 0-1 km storm-relative helicity
- 76 m²/s²
- 0-3 km storm-relative helicity
- 99 m²/s²
- Significant tornado parameter
- 0.3
- Supercell composite
- 2.5
The text
As transmitted, in the capitals the NWS used until 2016.
038
WUUS53 KDMX 300113
SVRDMX
IAC001-029-300200-
/O.NEW.KDMX.SV.W.0004.120330T0113Z-120330T0200Z/
BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE DES MOINES IA
813 PM CDT THU MAR 29 2012
THE NATIONAL WEATHER SERVICE IN DES MOINES HAS ISSUED A
* SEVERE THUNDERSTORM WARNING FOR...
WESTERN ADAIR COUNTY IN SOUTHWEST IOWA...
SOUTHEASTERN CASS COUNTY IN SOUTHWEST IOWA...
* UNTIL 900 PM CDT
* AT 810 PM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
SEVERE THUNDERSTORM CAPABLE OF PRODUCING PING PONG BALL SIZE
HAIL...AND DAMAGING WINDS IN EXCESS OF 60 MPH. THIS STORM WAS
LOCATED 5 MILES SOUTHEAST OF GRISWOLD...OR 15 MILES SOUTH OF
ATLANTIC...AND MOVING EAST AT 35 MPH.
* LOCATIONS IMPACTED INCLUDE...
CUMBERLAND...MASSENA...BRIDGEWATER AND ANITA.
THIS INCLUDES INTERSTATE 80 BETWEEN MILE MARKERS 74 AND 75.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
MOVE TO AN INTERIOR ROOM AND STAY AWAY FROM WINDOWS. IF YOU ARE IN A
MOBILE HOME...GET OUT NOW...AND SEEK SHELTER IN A REINFORCED
BUILDING.
&&
LAT...LON 4150 9466 4118 9452 4116 9467 4115 9494
4115 9515 4116 9516 4126 9517
TIME...MOT...LOC 0113Z 249DEG 30KT 4120 9503
WIND...HAIL 60MPH 1.50IN
$$
SMALL2 follow-up statements
693
WWUS53 KDMX 300130
SVSDMX
SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE DES MOINES IA
830 PM CDT THU MAR 29 2012
IAC001-029-300200-
/O.CON.KDMX.SV.W.0004.000000T0000Z-120330T0200Z/
ADAIR IA-CASS IA-
830 PM CDT THU MAR 29 2012
...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT FOR SOUTHEASTERN
CASS AND WESTERN ADAIR COUNTIES UNTIL 900 PM CDT...
AT 828 PM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
SEVERE THUNDERSTORM CAPABLE OF PRODUCING PING PONG BALL SIZE HAIL...
AND DAMAGING WINDS IN EXCESS OF 60 MPH. THIS STORM WAS LOCATED 12
MILES SOUTHEAST OF ATLANTIC...MOVING EAST AT 35 MPH.
LOCATIONS IMPACTED INCLUDE...
MASSENA...BRIDGEWATER AND ANITA.
THIS INCLUDES INTERSTATE 80 BETWEEN MILE MARKERS 74 AND 75.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
PREPARE FOR LARGE HAIL...DAMAGING WINDS AND DEADLY CLOUD TO GROUND
LIGHTNING. PEOPLE OUTSIDE SHOULD MOVE TO A SHELTER...PREFERABLY
INSIDE A REINFORCED BUILDING AND AWAY FROM WINDOWS.
&&
LAT...LON 4150 9466 4118 9452 4116 9467 4115 9494
4115 9515 4116 9516 4126 9517
TIME...MOT...LOC 0130Z 248DEG 32KT 4127 9484
WIND...HAIL 60MPH 1.50IN
$$
SMALL419
WWUS53 KDMX 300155
SVSDMX
SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE DES MOINES IA
855 PM CDT THU MAR 29 2012
IAC001-029-300204-
/O.EXP.KDMX.SV.W.0004.000000T0000Z-120330T0200Z/
ADAIR IA-CASS IA-
855 PM CDT THU MAR 29 2012
...THE SEVERE THUNDERSTORM WARNING FOR SOUTHEASTERN CASS AND WESTERN
ADAIR COUNTIES WILL EXPIRE AT 900 PM CDT...
THE STORM WHICH PROMPTED THE WARNING HAS WEAKENED BELOW SEVERE
LIMITS...AND NO LONGER POSES AN IMMEDIATE THREAT TO LIFE OR PROPERTY.
HOWEVER GUSTY WINDS ARE STILL POSSIBLE WITH THIS THUNDERSTORM.
IN ADDITION...STRONG THUNDERSTORMS MAY REDEVELOP...AND A SEVERE
THUNDERSTORM WATCH REMAINS IN EFFECT UNTIL 2 AM.
LAT...LON 4150 9466 4118 9452 4116 9467 4115 9494
4115 9515 4116 9516 4126 9517
TIME...MOT...LOC 0154Z 248DEG 32KT 4124 9477
$$
SMALLThe office that day
Everything else NWS Des Moines, IA issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Mar 29, 7:25 PM CDT | Severe Thunderstorm Warning | DMX | Audubon, Cass | 50 min |
| Mar 29, 8:49 PM CDT | Severe Thunderstorm Warning | DMX | Taylor | 44 min |
| Mar 29, 9:49 PM CDT | Severe Thunderstorm Warning | DMX | Ringgold, Taylor | 41 min |
| Mar 29, 10:49 PM CDT | Severe Thunderstorm Warning | DMX | Decatur, Ringgold | 41 min |
| Mar 30, 6:00 PM CDT | Severe Thunderstorm Warning | DMX | Crawford | 17 min |
Nearby
Severe Thunderstorm Warnings in Iowa, 2012Every severe thunderstorm warning in 2012
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; radar from the NEXRAD Level II archive.