Alert archive / Iowa / Tornado Warnings in 2012
Tornado Warning 2, NWS Des Moines, IA
NWS Des Moines, IA issued this tornado warning at Apr 14, 2012, 3:47 PM CDT for 4 counties in Iowa. It was in force for 28 min. 2 reports came from inside the area while it was in force.
The area
The outline as issued, with what was reported inside it.
The facts
- Issued
- Apr 14, 2012, 3:47 PM CDT (20:47 UTC)
- Expired
- Apr 14, 2012, 4:15 PM CDT
- In force
- 28 min
- Issued by
- NWS Des Moines, IA
- Area
- Storm-based polygon
Counties Adair County, IA, Adams County, IA, Madison County, IA, Union County, IA
The radar
The Des Moines radar (KDMX), 74 km from the middle of the area, began a volume at 20:47 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.
What was reported inside it
| Time | Report | Where | Remark |
|---|---|---|---|
| Apr 14, 3:51 PM CDT | TORNADO | 9 Nw Creston, IA | RAIN-WRAPPED TORNADO. RETRANSMISSION OF REPORT FROM 352PM. |
| Apr 14, 4:24 PM CDT | HAIL 1 | 8 W Winterset, IA | AT HIGHWAY 92 AND PITZER ROAD |
Local storm reports filed while the alert was in force, from inside its polygon or its counties.
The watch it was issued in
The SPC watch in force over the same counties when this warning went out.
| Issued | Product | Office | Lasted |
|---|---|---|---|
| Apr 14, 2:56 PM CDT | Tornado Watch | SPC | 2 hr |
The nearest sounding before it
Omaha, NE (KOAX), launched 12:00Z, 8.8 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
- 1847 m above ground
- 0-6 km bulk shear
- 38 kt
- 0-1 km storm-relative helicity
- 2 m²/s²
- 0-3 km storm-relative helicity
- 89 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted, in the capitals the NWS used until 2016.
946 WFUS53 KDMX 142047 TORDMX IAC001-003-121-175-142115- /O.NEW.KDMX.TO.W.0002.120414T2047Z-120414T2115Z/ BULLETIN - EAS ACTIVATION REQUESTED TORNADO WARNING NATIONAL WEATHER SERVICE DES MOINES IA 347 PM CDT SAT APR 14 2012 THE NATIONAL WEATHER SERVICE IN DES MOINES HAS ISSUED A * TORNADO WARNING FOR... SOUTHEASTERN ADAIR COUNTY IN SOUTHWEST IOWA... NORTHEASTERN ADAMS COUNTY IN SOUTHWEST IOWA... SOUTHWESTERN MADISON COUNTY IN SOUTH CENTRAL IOWA... NORTHWESTERN UNION COUNTY IN SOUTH CENTRAL IOWA... * UNTIL 415 PM CDT * AT 342 PM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A SEVERE THUNDERSTORM CAPABLE OF PRODUCING A TORNADO. THIS DANGEROUS STORM WAS LOCATED 10 MILES SOUTH OF GREENFIELD...OR 11 MILES NORTHWEST OF CRESTON...AND MOVING EAST AT 45 MPH. * LOCATIONS IMPACTED INCLUDE... ORIENT AND MACKSBURG. PRECAUTIONARY/PREPAREDNESS ACTIONS... THIS IS A DANGEROUS STORM. IMMEDIATELY SEEK SHELTER IN A BASEMENT... OR IN AN INTERIOR ROOM OF A REINFORCED BUILDING. STAY AWAY FROM WINDOWS. IF YOU ARE OUTSIDE...IN A MOBILE HOME...OR IN A VEHICLE...SEEK SHELTER IN A NEARBY REINFORCED BUILDING. AS A LAST RESORT...FIND THE LOWEST SPOT AVAILABLE AND COVER YOUR HEAD. && LAT...LON 4135 9418 4118 9409 4110 9455 4121 9461 TIME...MOT...LOC 2047Z 253DEG 40KT 4119 9446 $$ SKOW
2 follow-up statements
235 WWUS53 KDMX 142051 SVSDMX SEVERE WEATHER STATEMENT NATIONAL WEATHER SERVICE DES MOINES IA 351 PM CDT SAT APR 14 2012 IAC001-003-121-175-142115- /O.CON.KDMX.TO.W.0002.000000T0000Z-120414T2115Z/ UNION IA-MADISON IA-ADAIR IA-ADAMS IA- 351 PM CDT SAT APR 14 2012 ...A TORNADO WARNING REMAINS IN EFFECT FOR NORTHEASTERN ADAMS... SOUTHEASTERN ADAIR...SOUTHWESTERN MADISON AND NORTHWESTERN UNION COUNTIES UNTIL 415 PM CDT... AT 347 PM CDT...LOCAL LAW ENFORCEMENT REPORTED A TORNADO. THIS TORNADO WAS LOCATED 9 MILES SOUTH OF GREENFIELD...OR 10 MILES NORTHWEST OF CRESTON...MOVING EAST AT 45 MPH. LOCATIONS IMPACTED INCLUDE... MACKSBURG. PRECAUTIONARY/PREPAREDNESS ACTIONS... THIS IS A DANGEROUS STORM. IMMEDIATELY SEEK SHELTER IN A BASEMENT... OR IN AN INTERIOR ROOM OF A REINFORCED BUILDING. STAY AWAY FROM WINDOWS. IF YOU ARE OUTSIDE...IN A MOBILE HOME...OR IN A VEHICLE...SEEK SHELTER IN A NEARBY REINFORCED BUILDING. AS A LAST RESORT...FIND THE LOWEST SPOT AVAILABLE AND COVER YOUR HEAD. HEAVY RAINFALL MAY HIDE THIS TORNADO. TAKE COVER NOW. IF YOU WAIT TO SEE OR HEAR IT COMING...IT WILL BE TOO LATE TO GET TO A SAFE PLACE. && LAT...LON 4135 9418 4118 9409 4110 9455 4121 9461 TIME...MOT...LOC 2051Z 253DEG 40KT 4119 9440 $$ SKOW
615 WWUS53 KDMX 142117 SVSDMX SEVERE WEATHER STATEMENT NATIONAL WEATHER SERVICE DES MOINES IA 417 PM CDT SAT APR 14 2012 IAC001-003-121-175-142126- /O.EXP.KDMX.TO.W.0002.000000T0000Z-120414T2115Z/ UNION IA-MADISON IA-ADAIR IA-ADAMS IA- 417 PM CDT SAT APR 14 2012 ...THE TORNADO WARNING FOR NORTHEASTERN ADAMS...SOUTHEASTERN ADAIR... SOUTHWESTERN MADISON AND NORTHWESTERN UNION COUNTIES HAS EXPIRED... THE STORM WHICH PROMPTED THE WARNING HAS WEAKENED BELOW SEVERE LIMITS...AND NO LONGER POSES AN IMMEDIATE THREAT TO LIFE OR PROPERTY. HOWEVER QUARTER SIZED HAIL IS STILL POSSIBLE WITH THIS THUNDERSTORM. IN ADDITION...STRONG THUNDERSTORMS MAY REDEVELOP...AND A TORNADO WATCH REMAINS IN EFFECT UNTIL 9 PM. LAT...LON 4135 9418 4118 9409 4110 9455 4121 9461 TIME...MOT...LOC 2051Z 253DEG 40KT 4119 9440 $$ LEE
The office that day
Everything else NWS Des Moines, IA issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Apr 14, 3:53 AM CDT | Dense Fog Advisory | DMX | Adair, Adams, Audubon, Boone, Calhoun, Carroll and 22 more | 5 hr |
| Apr 14, 2:41 PM CDT | Severe Thunderstorm Warning | DMX | Adair, Adams, Cass | 49 min |
| Apr 14, 3:54 PM CDT | Severe Thunderstorm Warning | DMX | Adair, Madison | 36 min |
| Apr 14, 4:27 PM CDT | Severe Thunderstorm Warning | DMX | Madison, Warren | 48 min |
| Apr 14, 5:07 PM CDT | Severe Thunderstorm Warning | DMX | Polk, Warren | 38 min |
| Apr 14, 5:45 PM CDT | Severe Thunderstorm Warning | DMX | Jasper, Polk | 45 min |
| Apr 14, 6:12 PM CDT | Severe Thunderstorm Warning | DMX | Adair, Adams, Cass | 48 min |
| Apr 14, 6:26 PM CDT | Severe Thunderstorm Warning | DMX | Clarke, Decatur, Ringgold, Union | 34 min |
| Apr 14, 6:27 PM CDT | Severe Thunderstorm Warning | DMX | Taylor | 33 min |
| Apr 14, 6:48 PM CDT | Severe Thunderstorm Warning | DMX | Adams, Clarke, Decatur, Madison, Ringgold, Taylor and 1 more | 42 min |
| Apr 14, 6:50 PM CDT | Severe Thunderstorm Warning | DMX | Polk, Warren | 34 min |
| Apr 14, 6:59 PM CDT | Flash Flood Warning | DMX | Cass | 3 hr |
Nearby
Tornado Warnings in Iowa, 2012Every tornado warning in 2012Tornadoes 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; local storm reports from the same archive; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.