Alert archive / Iowa / Severe Thunderstorm Warnings in 2014
Severe Thunderstorm Warning 13, NWS Des Moines, IA
NWS Des Moines, IA issued this severe thunderstorm warning at Apr 12, 2014, 5:30 PM CDT for 4 counties in Iowa. It was in force for 45 min. 5 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 12, 2014, 5:30 PM CDT (22:30 UTC)
- Expired
- Apr 12, 2014, 6:15 PM CDT
- In force
- 45 min
- Issued by
- NWS Des Moines, IA
- Area
- Storm-based polygon
- Hail
- 1.0 in
- Wind
- 60.0 mph
Counties Butler County, IA, Franklin County, IA, Grundy County, IA, Hardin County, IA
The radar
The Des Moines radar (KDMX), 111 km from the middle of the area, began a volume at 22:33 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 12, 5:47 PM CDT | HAIL 0.88 | Ackley, IA | PUBLIC REPORTED PEA TO NICKEL SIZED HAIL |
| Apr 12, 5:48 PM CDT | HAIL 1 | 1 Nw Parkersburg, IA | PUBLIC ESTIMATE OF NICKEL TO QUARTER SIZED HAIL JUST NORTHWEST OF PARKERSBURG. RECEIVED VIA TWITTER. TIME ESTIMATED FROM RADAR. |
| Apr 12, 6:06 PM CDT | HAIL 1.5 | Aplington, IA | REPORT RECEIVED VIA TWITTER. TIME ESTIMATED FROM RADAR. |
| Apr 12, 6:08 PM CDT | HAIL 1.75 | Aplington, IA | LAW ENFORCEMENT REPORTED NICKEL TO GOLF BALL SIZE HAIL |
| Apr 12, 6:15 PM CDT | HAIL 1.5 | 1 Nw Parkersburg, IA | REPORT RECEIVED VIA TWITTER. TIME ESTIMATED FROM RADAR. |
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 12, 3:15 PM CDT | Severe Thunderstorm Watch | SPC | 7 hr |
The nearest sounding before it
Davenport, (KDVN), launched 12:00Z, 10.5 hours before the alert went out and 229 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
- 2231 m above ground
- 0-6 km bulk shear
- 51 kt
- 0-1 km storm-relative helicity
- 176 m²/s²
- 0-3 km storm-relative helicity
- 360 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted, in the capitals the NWS used until 2016.
972
WUUS53 KDMX 122230
SVRDMX
IAC023-069-075-083-122315-
/O.NEW.KDMX.SV.W.0013.140412T2230Z-140412T2315Z/
BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE DES MOINES IA
530 PM CDT SAT APR 12 2014
THE NATIONAL WEATHER SERVICE IN DES MOINES HAS ISSUED A
* SEVERE THUNDERSTORM WARNING FOR...
SOUTHEASTERN FRANKLIN COUNTY IN NORTH CENTRAL IOWA...
SOUTHERN BUTLER COUNTY IN NORTH CENTRAL IOWA...
NORTHEASTERN HARDIN COUNTY IN CENTRAL IOWA...
NORTHERN GRUNDY COUNTY IN CENTRAL IOWA...
* UNTIL 615 PM CDT
* AT 529 PM CDT...A SEVERE THUNDERSTORM WAS LOCATED NEAR ACKLEY...OR
NEAR IOWA FALLS...MOVING EAST AT 35 MPH.
HAZARD...60 MPH WIND GUSTS AND QUARTER SIZE HAIL.
SOURCE...RADAR INDICATED.
IMPACT...HAIL DAMAGE TO VEHICLES IS EXPECTED. EXPECT WIND DAMAGE
TO ROOFS...SIDING AND TREES.
* LOCATIONS IMPACTED INCLUDE...
IOWA FALLS...ALLISON...PARKERSBURG...ACKLEY...CLARKSVILLE...SHELL
ROCK...APLINGTON...NEW HARTFORD...STOUT AND ACKLEY MUNICIPAL
AIRPORT.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
FOR YOUR PROTECTION MOVE TO AN INTERIOR ROOM ON THE LOWEST FLOOR OF A
BUILDING.
&&
LAT...LON 4246 9323 4258 9329 4284 9256 4248 9255
TIME...MOT...LOC 2229Z 249DEG 32KT 4253 9315
HAIL...1.00IN
WIND...60MPH
$$
BEERENDS3 follow-up statements
885
WWUS53 KDMX 122252
SVSDMX
SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE DES MOINES IA
552 PM CDT SAT APR 12 2014
IAC069-083-122302-
/O.CAN.KDMX.SV.W.0013.000000T0000Z-140412T2315Z/
FRANKLIN IA-HARDIN IA-
552 PM CDT SAT APR 12 2014
...THE SEVERE THUNDERSTORM WARNING FOR SOUTHEASTERN FRANKLIN AND
NORTHEASTERN HARDIN COUNTIES IS CANCELLED...
THE SEVERE THUNDERSTORM WHICH PROMPTED THE WARNING HAS MOVED OUT OF
THE WARNED AREA. THEREFORE THE WARNING HAS BEEN CANCELLED.
A SEVERE THUNDERSTORM WATCH REMAINS IN EFFECT UNTIL 1000 PM CDT
SATURDAY AFTERNOON FOR IOWA.
LAT...LON 4249 9303 4267 9302 4284 9256 4251 9255
TIME...MOT...LOC 2252Z 251DEG 31KT 4261 9282
$$
IAC023-075-122315-
/O.CON.KDMX.SV.W.0013.000000T0000Z-140412T2315Z/
BUTLER IA-GRUNDY IA-
552 PM CDT SAT APR 12 2014
...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 615 PM CDT
FOR SOUTHERN BUTLER AND NORTHERN GRUNDY COUNTIES...
AT 552 PM CDT...A SEVERE THUNDERSTORM WAS LOCATED NEAR
PARKERSBURG...OR 10 MILES SOUTH OF ALLISON...MOVING EAST AT 35 MPH.
NICKEL HAIL WAS REPORTED IN ACKLEY.
HAZARD...60 MPH WIND GUSTS AND QUARTER SIZE HAIL.
SOURCE...RADAR INDICATED.
IMPACT...HAIL DAMAGE TO VEHICLES IS EXPECTED. EXPECT WIND DAMAGE TO
ROOFS...SIDING AND TREES.
LOCATIONS IMPACTED INCLUDE...
ALLISON...PARKERSBURG...CLARKSVILLE...SHELL ROCK...APLINGTON...NEW
HARTFORD AND STOUT.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
FOR YOUR PROTECTION MOVE TO AN INTERIOR ROOM ON THE LOWEST FLOOR OF A
BUILDING.
&&
LAT...LON 4249 9303 4267 9302 4284 9256 4251 9255
TIME...MOT...LOC 2252Z 251DEG 31KT 4261 9282
HAIL...1.00IN
WIND...60MPH
$$
BEERENDS944
WWUS53 KDMX 122306
SVSDMX
SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE DES MOINES IA
606 PM CDT SAT APR 12 2014
IAC023-075-122315-
/O.CON.KDMX.SV.W.0013.000000T0000Z-140412T2315Z/
BUTLER IA-GRUNDY IA-
606 PM CDT SAT APR 12 2014
...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 615 PM CDT
FOR SOUTHERN BUTLER AND NORTHERN GRUNDY COUNTIES...
AT 605 PM CDT...A SEVERE THUNDERSTORM WAS LOCATED OVER SHELL ROCK...
OR NEAR WAVERLY...MOVING EAST AT 40 MPH. A SECOND SEVERE STORM WAS
LOCATED IN WESTERN BUTLER COUNTY JUST NORTH OF APLINGTON MOVING EAST
AT 40 MPH.
HAZARD...60 MPH WIND GUSTS AND QUARTER SIZE HAIL.
SOURCE...RADAR INDICATED. AT 548 PM NICKEL TO QUARTER SIZE HAIL WAS
REPORTED JUST NORTHWEST OF PARKERSBURG.
IMPACT...HAIL DAMAGE TO VEHICLES IS EXPECTED. EXPECT WIND DAMAGE TO
ROOFS...SIDING AND TREES.
LOCATIONS IMPACTED INCLUDE...
ALLISON...PARKERSBURG...CLARKSVILLE...SHELL ROCK...APLINGTON...NEW
HARTFORD AND STOUT.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
FOR YOUR PROTECTION MOVE TO AN INTERIOR ROOM ON THE LOWEST FLOOR OF A
BUILDING.
&&
LAT...LON 4249 9299 4268 9300 4284 9256 4251 9255
TIME...MOT...LOC 2305Z 249DEG 62KT 4268 9255
HAIL...1.00IN
WIND...60MPH
$$
BEERENDS911
WWUS53 KDMX 122316
SVSDMX
SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE DES MOINES IA
616 PM CDT SAT APR 12 2014
IAC023-075-122325-
/O.EXP.KDMX.SV.W.0013.000000T0000Z-140412T2315Z/
BUTLER IA-GRUNDY IA-
616 PM CDT SAT APR 12 2014
...THE SEVERE THUNDERSTORM WARNING FOR SOUTHERN BUTLER AND NORTHERN
GRUNDY COUNTIES HAS EXPIRED...
THE STORM WHICH PROMPTED THE WARNING HAS MOVED OUT OF GRUNDY
COUNTY...THEREFORE THE WARNING HAS BEEN ALLOWED TO EXPIRE FOR GRUNDY
COUNTY. A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT FOR BUTLER
COUNTY UNTIL 7 PM CDT.
A SEVERE THUNDERSTORM WATCH REMAINS IN EFFECT UNTIL 1000 PM CDT
SATURDAY AFTERNOON FOR IOWA.
LAT...LON 4249 9299 4268 9300 4284 9256 4251 9255
TIME...MOT...LOC 2310Z 249DEG 32KT 4268 9255
$$
BEERENDSThe office that day
Everything else NWS Des Moines, IA issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Apr 12, 4:44 PM CDT | Severe Thunderstorm Warning | DMX | Bremer | 31 min |
| Apr 12, 6:14 PM CDT | Severe Thunderstorm Warning | DMX | Black Hawk, Bremer, Butler | 46 min |
| Apr 12, 6:51 PM CDT | Severe Thunderstorm Warning | DMX | Bremer | 39 min |
Nearby
Severe Thunderstorm Warnings in Iowa, 2014Every severe thunderstorm warning in 2014
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.