Alert archive / Iowa / Severe Thunderstorm Warnings in 2013

Severe Thunderstorm Warning 252, NWS Des Moines, IA

October 30, 2013Adair County, Guthrie County, Iowa

NWS Des Moines, IA issued this severe thunderstorm warning at Oct 30, 2013, 9:39 AM CDT for Adair County, Guthrie County, Iowa. It was in force for 36 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
Oct 30, 2013, 9:39 AM CDT (14:39 UTC)
Expired
Oct 30, 2013, 10:15 AM CDT
In force
36 min
Issued by
NWS Des Moines, IA
Area
Storm-based polygon
Hail
1.0 in
Wind
60.0 mph

Counties Adair County, IA, Guthrie County, IA

The radar

The Des Moines radar (KDMX), 61 km from the middle of the area, began a volume at 14:41 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 12:00Z, 2.7 hours before the alert went out and 165 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 2013-10-30Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 0 joules per kilogram.LCL10008507005003002001001 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 2013-10-30The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 229 square meters per square second.1939587897117Sfc1 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
0 J/kg
Mixed-layer CIN
No buoyant parcel
Mixed-layer LCL
508 m above ground
0-6 km bulk shear
62 kt
0-1 km storm-relative helicity
229 m²/s²
0-3 km storm-relative helicity
278 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.

868 
WUUS53 KDMX 301439
SVRDMX
IAC001-077-301515-
/O.NEW.KDMX.SV.W.0252.131030T1439Z-131030T1515Z/

BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE DES MOINES IA
939 AM CDT WED OCT 30 2013

THE NATIONAL WEATHER SERVICE IN DES MOINES HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...
  NORTHERN ADAIR COUNTY IN SOUTHWEST IOWA...
  SOUTHEASTERN GUTHRIE COUNTY IN WEST CENTRAL IOWA...

* UNTIL 1015 AM CDT

* AT 937 AM CDT...A SEVERE THUNDERSTORM WAS LOCATED 11 MILES
  NORTHWEST OF GREENFIELD...AND MOVING NORTHEAST AT 45 MPH.

  HAZARD...QUARTER SIZE HAIL AND 60 MPH WIND GUSTS.

  SOURCE...RADAR INDICATED.

  IMPACT...HAIL DAMAGE TO VEHICLES IS EXPECTED. EXPECT WIND DAMAGE TO
           ROOFS...SIDING AND TREES.

* LOCATIONS IMPACTED INCLUDE...
  STUART...ADAIR...CASEY AND MENLO.

THIS INCLUDES INTERSTATE 80 BETWEEN MILE MARKERS 75 AND 96.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

FOR YOUR PROTECTION MOVE TO AN INTERIOR ROOM ON THE LOWEST FLOOR OF A
BUILDING.

&&

LAT...LON 4161 9451 4166 9429 4164 9428 4160 9428
      4160 9425 4147 9425 4130 9466 4146 9470
TIME...MOT...LOC 1439Z 225DEG 37KT 4138 9463

HAIL...1.00IN
WIND...60MPH

$$

PODRAZIK
2 follow-up statements
810 
WWUS53 KDMX 301453
SVSDMX

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE DES MOINES IA
953 AM CDT WED OCT 30 2013

IAC001-077-301515-
/O.CON.KDMX.SV.W.0252.000000T0000Z-131030T1515Z/
GUTHRIE IA-ADAIR IA-
953 AM CDT WED OCT 30 2013

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT FOR NORTHERN ADAIR
AND SOUTHEASTERN GUTHRIE COUNTIES UNTIL 1015 AM CDT...

AT 951 AM CDT...A SEVERE THUNDERSTORM WAS LOCATED 10 MILES NORTH OF
GREENFIELD...AND MOVING NORTHEAST AT 40 MPH.

HAZARD...QUARTER SIZE HAIL.

SOURCE...RADAR INDICATED.

IMPACT...DAMAGE TO VEHICLES IS EXPECTED.

LOCATIONS IMPACTED INCLUDE...
STUART...CASEY AND MENLO.

THIS INCLUDES INTERSTATE 80 BETWEEN MILE MARKERS 78 AND 96.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

FOR YOUR PROTECTION MOVE TO AN INTERIOR ROOM ON THE LOWEST FLOOR OF A
BUILDING.

&&

LAT...LON 4134 9457 4152 9463 4161 9451 4166 9429
      4164 9428 4160 9428 4160 9425 4147 9425
TIME...MOT...LOC 1453Z 236DEG 33KT 4146 9450

HAIL...1.00IN
WIND...<50MPH

$$

PODRAZIK
976 
WWUS53 KDMX 301504
SVSDMX

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE DES MOINES IA
1004 AM CDT WED OCT 30 2013

IAC001-077-301514-
/O.CAN.KDMX.SV.W.0252.000000T0000Z-131030T1515Z/
GUTHRIE IA-ADAIR IA-
1004 AM CDT WED OCT 30 2013

...THE SEVERE THUNDERSTORM WARNING FOR NORTHERN ADAIR AND
SOUTHEASTERN GUTHRIE COUNTIES IS CANCELLED...

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

LAT...LON 4134 9457 4152 9463 4161 9451 4166 9429
      4164 9428 4160 9428 4160 9425 4147 9425
TIME...MOT...LOC 1504Z 236DEG 33KT 4152 9439

$$

PODRAZIK

The office that day

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

IssuedProductOfficeCountiesLasted
Oct 30, 3:56 AM CDTDense Fog AdvisoryDMXAdair, Adams, Appanoose, Audubon, Black Hawk, Boone and 45 more10 hr

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; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.