Alert archive / Iowa / Severe Thunderstorm Warnings in 2013
Severe Thunderstorm Warning 13, NWS Des Moines, IA
NWS Des Moines, IA issued this severe thunderstorm warning at Apr 29, 2013, 7:43 AM CDT for Grundy County, Hardin County, Iowa. It was in force for 47 min. 1 report 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 29, 2013, 7:43 AM CDT (12:43 UTC)
- Expired
- Apr 29, 2013, 8:30 AM CDT
- In force
- 47 min
- Issued by
- NWS Des Moines, IA
- Area
- Storm-based polygon
- Hail
- 1.0 in
- Wind
- 50.0 mph
Counties Grundy County, IA, Hardin County, IA
The radar
The Des Moines radar (KDMX), 117 km from the middle of the area, began a volume at 12:46 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 29, 7:48 AM CDT | HAIL 0.88 | 4 N Wellsburg, IA | DIME TO NICKEL SIZED HAIL COVERING A 2 MILE STRETCH OF T-19 NORTH OF WELLSBURG. HAIL WAS ONE TO TWO INCHES DEEP. |
Local storm reports filed while the alert was in force, from inside its polygon or its counties.
The nearest sounding before it
Davenport, (KDVN), launched 12:00Z, 0.7 hours before the alert went out and 204 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
- 1389 m above ground
- 0-6 km bulk shear
- 26 kt
- 0-1 km storm-relative helicity
- 89 m²/s²
- 0-3 km storm-relative helicity
- 49 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted, in the capitals the NWS used until 2016.
614
WUUS53 KDMX 291243
SVRDMX
IAC075-083-291330-
/O.NEW.KDMX.SV.W.0013.130429T1243Z-130429T1330Z/
BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE DES MOINES IA
743 AM CDT MON APR 29 2013
THE NATIONAL WEATHER SERVICE IN DES MOINES HAS ISSUED A
* SEVERE THUNDERSTORM WARNING FOR...
NORTHERN GRUNDY COUNTY IN CENTRAL IOWA...
NORTHEASTERN HARDIN COUNTY IN CENTRAL IOWA...
* UNTIL 830 AM CDT
* AT 743 AM CDT...A SEVERE THUNDERSTORM WAS LOCATED 9 MILES NORTHEAST
OF ELDORA...AND MOVING EAST AT 30 MPH.
HAZARD...QUARTER SIZE HAIL.
SOURCE...LAW ENFORCEMENT.
IMPACT...DAMAGE TO VEHICLES AND CROPS IS EXPECTED.
* LOCATIONS IMPACTED INCLUDE...
WELLSBURG...HOLLAND...STOUT AND DIKE.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
FOR YOUR PROTECTION MOVE TO AN INTERIOR ROOM ON THE LOWEST FLOOR OF A
BUILDING.
PREPARE IMMEDIATELY FOR LARGE HAIL AND DEADLY CLOUD TO GROUND
LIGHTNING. SEEK SHELTER INSIDE A WELL-BUILT STRUCTURE. STAY AWAY FROM
WINDOWS.
&&
LAT...LON 4236 9253 4242 9309 4255 9306 4256 9256
4247 9256 4247 9254
TIME...MOT...LOC 1243Z 270DEG 27KT 4246 9299
HAIL...1.00IN
WIND...<50MPH
$$
COGIL2 follow-up statements
811
WWUS53 KDMX 291253
SVSDMX
SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE DES MOINES IA
753 AM CDT MON APR 29 2013
IAC083-291304-
/O.CAN.KDMX.SV.W.0013.000000T0000Z-130429T1330Z/
HARDIN IA-
753 AM CDT MON APR 29 2013
...THE SEVERE THUNDERSTORM WARNING FOR NORTHEASTERN HARDIN COUNTY IS
CANCELLED...
THE STORM WHICH PROMPTED THE WARNING HAS MOVED OUT OF THE WARNED
AREA.
LAT...LON 4236 9253 4241 9295 4255 9296 4255 9256
4247 9256 4247 9254
TIME...MOT...LOC 1254Z 264DEG 31KT 4248 9285
$$
IAC075-291330-
/O.CON.KDMX.SV.W.0013.000000T0000Z-130429T1330Z/
GRUNDY IA-
753 AM CDT MON APR 29 2013
...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT FOR NORTHERN
GRUNDY COUNTY UNTIL 830 AM CDT...
AT 750 AM CDT...A SEVERE THUNDERSTORM WAS LOCATED 7 MILES SOUTH OF
APLINGTON...AND MOVING EAST AT 35 MPH.
HAZARD...PING PONG BALL SIZE HAIL.
SOURCE...RADAR INDICATED.
IMPACT...PEOPLE AND ANIMALS OUTDOORS WILL BE INJURED. EXPECT DAMAGE
TO ROOFS...SIDING...WINDOWS...VEHICLES AND CROPS.
LOCATIONS IMPACTED INCLUDE...
HOLLAND...STOUT AND DIKE.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
PREPARE IMMEDIATELY FOR LARGE HAIL AND DEADLY CLOUD TO GROUND
LIGHTNING. SEEK SHELTER INSIDE A WELL-BUILT STRUCTURE. STAY AWAY FROM
WINDOWS.
&&
LAT...LON 4236 9253 4241 9295 4255 9296 4255 9256
4247 9256 4247 9254
TIME...MOT...LOC 1254Z 264DEG 31KT 4248 9285
HAIL...1.50IN
WIND...<50MPH
$$
COGIL001
WWUS53 KDMX 291309
SVSDMX
SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE DES MOINES IA
809 AM CDT MON APR 29 2013
IAC075-291330-
/O.CON.KDMX.SV.W.0013.000000T0000Z-130429T1330Z/
GRUNDY IA-
809 AM CDT MON APR 29 2013
...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT FOR NORTHERN
GRUNDY COUNTY UNTIL 830 AM CDT...
AT 805 AM CDT...A LINE OF SEVERE THUNDERSTORMS WAS LOCATED ALONG A
LINE EXTENDING FROM 7 MILES SOUTHEAST OF PARKERSBURG TO 7 MILES
SOUTHWEST OF APLINGTON...AND MOVING EAST AT 35 MPH.
HAZARD...QUARTER SIZE HAIL.
SOURCE...RADAR INDICATED.
IMPACT...DAMAGE TO VEHICLES AND CROPS IS EXPECTED.
LOCATIONS IMPACTED INCLUDE...
DIKE.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
PREPARE IMMEDIATELY FOR LARGE HAIL AND DEADLY CLOUD TO GROUND
LIGHTNING. SEEK SHELTER INSIDE A WELL-BUILT STRUCTURE. STAY AWAY FROM
WINDOWS.
&&
LAT...LON 4236 9253 4241 9295 4255 9296 4255 9256
4247 9256 4247 9254
TIME...MOT...LOC 1308Z 264DEG 31KT 4251 9263 4249 9291
HAIL...1.00IN
WIND...<50MPH
$$
SKOWThe office that day
Everything else NWS Des Moines, IA issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Apr 29, 5:25 AM CDT | Severe Thunderstorm Warning | DMX | Hamilton, Webster, Wright | 65 min |
| Apr 29, 6:11 AM CDT | Severe Thunderstorm Warning | DMX | Hamilton, Hardin | 34 min |
| Apr 29, 7:01 AM CDT | Severe Thunderstorm Warning | DMX | Grundy, Hardin | 44 min |
| Apr 29, 8:29 AM CDT | Severe Thunderstorm Warning | DMX | Black Hawk, Butler, Grundy | 46 min |
| Apr 29, 9:16 AM CDT | Severe Thunderstorm Warning | DMX | Black Hawk, Butler, Grundy | 44 min |
Nearby
Severe Thunderstorm Warnings in Iowa, 2013Every severe thunderstorm warning in 2013
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.