Alert archive / Iowa / Severe Thunderstorm Warnings in 2012

Severe Thunderstorm Warning 113, NWS Des Moines, IA

June 16, 2012Decatur County, Ringgold County, Iowa

NWS Des Moines, IA issued this severe thunderstorm warning at Jun 16, 2012, 2:57 PM CDT for Decatur County, Ringgold County, Iowa. It was in force for 48 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
Jun 16, 2012, 2:57 PM CDT (19:57 UTC)
Expired
Jun 16, 2012, 3:45 PM CDT
In force
48 min
Issued by
NWS Des Moines, IA
Area
Storm-based polygon
Hail
1.0 in
Wind
60.0 mph

Counties Decatur County, IA, Ringgold County, IA

The radar

The Des Moines radar (KDMX), 122 km from the middle of the area, began a volume at 19:59 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

TimeReportWhereRemark
Jun 16, 3:11 PM CDTTSTM WND DMGSw Lamoni, IASEVERAL 3 TO 4 INCH BRANCHES DOWN ACROSS THE YARD.

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.

IssuedProductOfficeLasted
Jun 16, 12:35 PM CDTSevere Thunderstorm WatchSPC5 hr

The nearest sounding before it

Omaha, NE (KOAX), launched 12:00Z, 8.0 hours before the alert went out and 209 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.

Skew-T log-pSkew-T log-p diagram, Omaha, NE at 12:00Z on 2012-06-16Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 157 joules per kilogram.LCLLFCEL10008507005003002001001 km2 km3 km6 km9 km12 km15 km-30°-20°-10°0°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Omaha, NE at 12:00Z on 2012-06-16The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity -22 square meters per square second.193958Sfc1 km3 km6 km9 kmRMLM
The wind turning with height, colored by layer: ground to 1 km, 1 to 3 km, 3 to 6 km, 6 to 10 km.
Mixed-layer CAPE
157 J/kg
Mixed-layer CIN
-271 J/kg
Mixed-layer LCL
884 m above ground
0-6 km bulk shear
10 kt
0-1 km storm-relative helicity
-22 m²/s²
0-3 km storm-relative helicity
96 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.0

Open this sounding in Storm Lab

The text

As transmitted, in the capitals the NWS used until 2016.

552 
WUUS53 KDMX 161957
SVRDMX
IAC053-159-162045-
/O.NEW.KDMX.SV.W.0113.120616T1957Z-120616T2045Z/

BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE DES MOINES IA
257 PM CDT SAT JUN 16 2012

THE NATIONAL WEATHER SERVICE IN DES MOINES HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...
  WESTERN DECATUR COUNTY IN SOUTH CENTRAL IOWA...
  SOUTHEASTERN RINGGOLD COUNTY IN SOUTH CENTRAL IOWA...

* UNTIL 345 PM CDT

* AT 254 PM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
  SEVERE THUNDERSTORM CAPABLE OF PRODUCING QUARTER SIZE HAIL...AND
  DAMAGING WINDS IN EXCESS OF 60 MPH.  THIS STORM WAS LOCATED 7 MILES
  EAST OF MOUNT AYR...OR 10 MILES NORTHWEST OF LAMONI...AND MOVING
  EAST AT 30 MPH.

* LOCATIONS IMPACTED INCLUDE...
  LAMONI...LEON...KELLERTON...LAMONI AIRPORT...DAVIS CITY...DECATUR
  CITY AND PLEASANTON.

THIS INCLUDES INTERSTATE 35 BETWEEN MILE MARKERS 1 AND 18.

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.

TORRENTIAL RAINFALL IS ALSO OCCURRING WITH THIS STORM...AND MAY LEAD
TO FLASH FLOODING. DO NOT DRIVE YOUR VEHICLE THROUGH FLOODED
ROADWAYS. TURN AROUND DON/T DROWN.

&&

LAT...LON 4071 9429 4083 9377 4058 9368 4057 9401
      4057 9416
TIME...MOT...LOC 1957Z 252DEG 24KT 4071 9408
WIND...HAIL 60MPH 1.00IN

$$

DEITSCH
2 follow-up statements
847 
WWUS53 KDMX 162025
SVSDMX

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE DES MOINES IA
325 PM CDT SAT JUN 16 2012

IAC159-162035-
/O.CAN.KDMX.SV.W.0113.000000T0000Z-120616T2045Z/
RINGGOLD IA-
325 PM CDT SAT JUN 16 2012

...THE SEVERE THUNDERSTORM WARNING FOR SOUTHEASTERN RINGGOLD COUNTY
IS CANCELLED...

THE STORM WHICH PROMPTED THE WARNING HAS MOVED OUT OF THE WARNED 
AREA.

LAT...LON 4078 9399 4083 9377 4058 9368 4058 9388
      4057 9390 4057 9391
TIME...MOT...LOC 2025Z 258DEG 30KT 4070 9378

$$

IAC053-162045-
/O.CON.KDMX.SV.W.0113.000000T0000Z-120616T2045Z/
DECATUR IA-
325 PM CDT SAT JUN 16 2012

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT FOR CENTRAL
DECATUR COUNTY UNTIL 345 PM CDT...

AT 324 PM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
SEVERE THUNDERSTORM CAPABLE OF PRODUCING QUARTER SIZE HAIL...AND
DAMAGING WINDS IN EXCESS OF 60 MPH.  THIS STORM WAS LOCATED NEAR
LEON...OR 10 MILES NORTHEAST OF LAMONI...MOVING EAST AT 35 MPH.

LOCATIONS IMPACTED INCLUDE...
  LEON.

THIS INCLUDES INTERSTATE 35 BETWEEN MILE MARKERS 2 AND 18.

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.

TORRENTIAL RAINFALL IS ALSO OCCURRING WITH THIS STORM...AND MAY LEAD
TO FLASH FLOODING. DO NOT DRIVE YOUR VEHICLE THROUGH FLOODED
ROADWAYS. TURN AROUND DON/T DROWN.

&&

LAT...LON 4078 9399 4083 9377 4058 9368 4058 9388
      4057 9390 4057 9391
TIME...MOT...LOC 2025Z 258DEG 30KT 4070 9378
WIND...HAIL 60MPH 1.00IN

$$

DEITSCH
556 
WWUS53 KDMX 162039
SVSDMX

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE DES MOINES IA
339 PM CDT SAT JUN 16 2012

IAC053-162049-
/O.EXP.KDMX.SV.W.0113.000000T0000Z-120616T2045Z/
DECATUR IA-
339 PM CDT SAT JUN 16 2012

...THE SEVERE THUNDERSTORM WARNING FOR CENTRAL DECATUR COUNTY WILL
EXPIRE AT 345 PM CDT...

THE STORM WHICH PROMPTED THE WARNING HAS MOVED OUT OF THE WARNED
AREA.  HOWEVER HEAVY RAIN IS STILL POSSIBLE WITH THIS THUNDERSTORM.

IN ADDITION...STRONG THUNDERSTORMS MAY REDEVELOP...AND A SEVERE 
THUNDERSTORM WATCH REMAINS IN EFFECT UNTIL 7 PM.

LAT...LON 4078 9399 4083 9377 4058 9368 4058 9388
      4057 9390 4057 9391
TIME...MOT...LOC 2039Z 258DEG 30KT 4072 9363

$$

DEITSCH

The office that day

Everything else NWS Des Moines, IA issued on the same UTC day.

IssuedProductOfficeCountiesLasted
Jun 16, 1:40 PM CDTSevere Thunderstorm WarningDMXAdams, Ringgold, Taylor, Union50 min
Jun 16, 2:28 PM CDTSevere Thunderstorm WarningDMXClarke, Decatur, Ringgold, Union47 min
Jun 16, 2:44 PM CDTSevere Thunderstorm WarningDMXDecatur, Wayne46 min
Jun 16, 3:30 PM CDTSevere Thunderstorm WarningDMXDecatur, Wayne30 min
Jun 16, 3:44 PM CDTSevere Thunderstorm WarningDMXDavis31 min
Jun 16, 4:07 PM CDTSevere Thunderstorm WarningDMXDavis, Monroe, Wapello38 min
Jun 16, 4:41 PM CDTSevere Thunderstorm WarningDMXWapello26 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; local storm reports from the same archive; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.