Alert archive / Iowa / Severe Thunderstorm Warnings in 2005

Severe Thunderstorm Warning 207, NWS Des Moines, IA

June 29, 2005Lucas County, Warren County, Iowa

NWS Des Moines, IA issued this severe thunderstorm warning at Jun 29, 2005, 11:41 PM CDT for Lucas County, Warren County, Iowa. It was in force for 52 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 29, 2005, 11:41 PM CDT (04:41 UTC)
Expired: Jun 30, 2005, 12:33 AM CDT
In force: 52 min
Issued by: NWS Des Moines, IA
Area: Counties, with a storm outline in the text

Counties Lucas County, IA, Warren County, IA

The radar

The Des Moines radar (KDMX), 66 km from the middle of the area, began a volume at 04:43 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
Jun 29, 11:55 PM CDT	TSTM WND DMG	Chariton, IA	POWER POLES DOWN IN CHARITON. REPORTED BY EMERGENCY MANAGER.

Local storm reports filed while the alert was in force, from inside its polygon or its counties.

Did it verify

Verified. The Iowa Environmental Mesonet's Cow matched one storm report to this severe thunderstorm warning; the first came 14 minutes after it went out.

Cow counts a report within 15 km of the polygon while the warning was in force: a tornado for a tornado warning; hail of 1 inch or more, a gust of 58 mph or more or wind damage for a severe thunderstorm warning; a flash flood report for a flash flood warning.

The watch it was issued in

The SPC watch in force over the same counties when this warning went out.

Issued	Product	Office	Lasted
Jun 29, 9:15 PM CDT	Severe Thunderstorm Watch	SPC	6 hr

The nearest sounding before it

Omaha, NE (KOAX), launched 00:00Z, 4.7 hours before the alert went out and 241 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-p

Temperature in red, dew point in green, the mixed-layer parcel dashed.

Hodograph

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: 1390 J/kg
Mixed-layer CIN: -46 J/kg
Mixed-layer LCL: 2195 m above ground
0-6 km bulk shear: 35 kt
0-1 km storm-relative helicity: -16 m²/s²
0-3 km storm-relative helicity: 129 m²/s²
Significant tornado parameter: 0.0
Supercell composite: -0.3

Open this sounding in Storm Lab

The text

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

000 
WUUS53 KDMX 300441
SVRDMX
IAC117-181-300530-
/O.NEW.KDMX.SV.W.0207.050630T0441Z-050630T0530Z/

BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE DES MOINES IA
1141 PM CDT WED JUN 29 2005

THE NATIONAL WEATHER SERVICE IN DES MOINES HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...
  LUCAS COUNTY IN SOUTH CENTRAL IOWA.
  SOUTHERN WARREN COUNTY IN SOUTH CENTRAL IOWA.

* UNTIL 1230 AM CDT.

* AT 1138 PM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
  LINE OF SEVERE THUNDERSTORMS CAPABLE OF PRODUCING QUARTER SIZE
  HAIL...AND DESTRUCTIVE WINDS IN EXCESS OF 70 MPH.  THESE STORMS
  WERE LOCATED ALONG A LINE EXTENDING FROM 9 MILES SOUTH OF INDIANOLA
  TO 10 MILES EAST OF OSCEOLA...OR ALONG A LINE EXTENDING FROM 24
  MILES SOUTH OF DES MOINES TO 36 MILES SOUTH OF DES MOINES...AND
  MOVING EAST AT 45 MPH.

* SEVERE THUNDERSTORMS WILL BE...
  NEAR CHARITON MUNICIPAL AIRPORT BY 1150 PM CDT.
  NEAR CHARITON BY 1155 PM CDT.
  NEAR WILLIAMSON BY MIDNIGHT CDT.
  NEAR RUSSELL BY 1205 AM CDT.

THE LOCATIONS OF LUCAS...MILO AND LACONA ARE ALSO IN THE PATH OF
THESE SEVERE THUNDERSTORMS.

LARGE HAIL CAN CAUSE SERIOUS INJURY AND EXTENSIVE PROPERTY DAMAGE.
SEEK SAFETY IN A STURDY BUILDING...AND STAY AWAY FROM WINDOWS.

LAT...LON 4118 9379 4114 9354 4095 9355 4095 9313
      4115 9312 4115 9335 4139 9335 4139 9379

$$

DONAVON

2 follow-up statements

000 
WWUS53 KDMX 300526
SVSDMX

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE DES MOINES IA
1225 AM CDT THU JUN 30 2005

IAC181-300535-
/O.CAN.KDMX.SV.W.0207.000000T0000Z-050630T0530Z/
WARREN IA-
1225 AM CDT THU JUN 30 2005

...THE SEVERE THUNDERSTORM WARNING FOR WARREN COUNTY HAS BEEN
CANCELLED...

AT 1221 AM CDT...WEATHER SERVICE DOPPLER RADAR INDICATED THAT THE
THUNDERSTORMS WHICH PROMPTED THE WARNING HAVE EITHER WEAKENED OR
MOVED OUT OF THE AREA...AND NO LONGER POSE AN IMMEDIATE THREAT TO
LIFE OR PROPERTY. THEREFORE...THE SEVERE THUNDERSTORM WARNING HAS
BEEN CANCELLED.

LAT...LON 4114 9354 4114 9354 4095 9356 4095 9313
      4115 9313 4115 9335 4115 9336 4113 9353

$$

IAC117-300530-
/O.CON.KDMX.SV.W.0207.000000T0000Z-050630T0530Z/
LUCAS IA-
1225 AM CDT THU JUN 30 2005

...A SEVERE THUNDERSTORM WARNING CONTINUES FOR LUCAS COUNTY UNTIL
1230 AM CDT...

AT 1221 AM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
SEVERE THUNDERSTORM CAPABLE OF PRODUCING PENNY SIZE HAIL...AND
DAMAGING WINDS IN EXCESS OF 60 MPH.  THIS STORM WAS LOCATED 9 MILES
WEST OF CHARITON...OR 38 MILES SOUTH OF DES MOINES...AND MOVING EAST
AT 45 MPH.

THE SEVERE THUNDERSTORM WILL BE...
  NEAR CHARITON BY 1230 AM CDT.

THE LOCATIONS OF LUCAS...CHARITON MUNICIPAL AIRPORT AND WILLIAMSON
ARE ALSO IN THE PATH OF THIS SEVERE THUNDERSTORM.

IF YOU ARE IN THE PATH OF THIS STORM...PREPARE IMMEDIATELY FOR LARGE
HAIL...DAMAGING WINDS AND DEADLY CLOUD TO GROUND LIGHTNING. PEOPLE
OUTSIDE SHOULD MOVE TO A SHELTER...PREFERABLY INSIDE A STRONG
BUILDING BUT AWAY FROM WINDOWS.

LAT...LON 4114 9354 4114 9354 4095 9356 4095 9313
      4115 9313 4115 9335 4115 9336 4113 9353

$$

DONAVON

000 
WWUS53 KDMX 300533
SVSDMX

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE DES MOINES IA
1233 AM CDT THU JUN 30 2005

IAC117-300543-
/O.EXP.KDMX.SV.W.0207.000000T0000Z-050630T0530Z/
LUCAS IA-
1233 AM CDT THU JUN 30 2005

...THE SEVERE THUNDERSTORM WARNING FOR LUCAS COUNTY HAS BEEN ALLOWED
TO EXPIRE...

AT 1230 AM CDT...WEATHER SERVICE DOPPLER RADAR INDICATED THAT THE
THUNDERSTORMS WHICH PROMPTED THE WARNING HAVE MOVED OUT OF THE AREA.
THEREFORE...THE SEVERE THUNDERSTORM WARNING HAS BEEN ALLOWED TO
EXPIRE.

LAT...LON 4114 9354 4114 9354 4095 9356 4095 9313
      4115 9313 4115 9335 4115 9336 4113 9353

$$

DONAVON

What forecasters said that day

The local office's own words before this severe thunderstorm warning went out, as it sent them, from the Iowa Environmental Mesonet's archive of National Weather Service text.

NWS Des Moines, IA wrote its last area forecast discussion before this severe thunderstorm warning went out at Jun 29, 3:35 PM CDT, 8 hours 6 minutes earlier.

Area forecast discussion, Jun 29, 3:35 PM CDT, 8 hours 6 minutes before

AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE DES MOINES IA
335 PM CDT WED JUN 29 2005

.DISCUSSION...
MOST OF WX ACTION OVR FOR THE FCST PD WL BE IN THE FIRST PD WITH
VIGOROUS SYS MOVG THRU TNGT.  XPCT TSRA INIT SHORTLY AFTER ZN
RELEASE OVR NWRN IA WITH A SIG EVENT TAKING PLACE TNGT AS STG JET
AND STEEP LAPSE RATES ARE IN PLACE OVR THE CWA.  MAIN THREAT WL BE N
OF U.S. HWY 30 WITH TIMING BEING FRM LATE THIS AFTN THRU MIDN.
COOLER AND DRIER WX ON TAP POST FROPA WITH BUBBLE HIGH MOVG THRU
CNTRL U.S. THU THROUGH SAT.  NXT ROUND WL COME IN THE SAT NGT THRU
SUN NGT WITH THTE 4TH LOOKING TO BE ALRIGHT ATTM.  STILL RECOVERING
FM LIGHTNING STRIKE EARLIER TDA SO ANAL LMTD TO 1ST PD FOR THE MOST
PART.

&&

.DMX WATCHES/WARNINGS/ADVISORIES...NONE.

&&

Hazardous weather outlook, Jun 29, 11:15 PM CDT, 26 minutes before

HAZARDOUS WEATHER OUTLOOK
NATIONAL WEATHER SERVICE DES MOINES IA
1115 PM CDT WED JUN 29 2005

IAZ004>007-015>017-023>028-033>039-044>050-301030-
EMMET-KOSSUTH-WINNEBAGO-WORTH-PALO ALTO-HANCOCK-CERRO GORDO-
POCAHONTAS-HUMBOLDT-WRIGHT-FRANKLIN-BUTLER-BREMER-SAC-CALHOUN-
WEBSTER-HAMILTON-HARDIN-GRUNDY-BLACK HAWK-CRAWFORD-CARROLL-GREENE-
BOONE-STORY-MARSHALL-TAMA-
1115 PM CDT WED JUN 29 2005

THIS HAZARDOUS WEATHER OUTLOOK IS FOR PORTIONS OF NORTH CENTRAL
AND CENTRAL IOWA NORTH OF HIGHWAY 30.

.DAY ONE...TONIGHT

THUNDERSTORMS WILL MOVE ACROSS THE AREA...MAINLY ALONG AND SOUTH OF
HIGHWAY 30 THROUGH MIDNIGHT.  DAMAGING WIND GUSTS TO 60 MPH AND
NICKEL HAIL ARE THE MAIN THREATS.

.DAYS TWO THROUGH SEVEN...THURSDAY THROUGH TUESDAY

THUNDERSTORMS WILL BE POSSIBLE ACROSS THE AREA SATURDAY NIGHT
THROUGH SUNDAY NIGHT. A FEW SEVERE STORMS AND LOCALLY HEAVY
RAINFALL WILL BE POSSIBLE.

.SPOTTER INFORMATION STATEMENT...

SPOTTER ACTIVATION IS LIKELY THROUGH MIDNIGHT.  ACTIVATION MAY
ALSO BE POSSIBLE SATURDAY NIGHT THROUGH SUNDAY NIGHT.

IAZ057>062-070>075-081>086-092>097-301030-
AUDUBON-GUTHRIE-DALLAS-POLK-JASPER-POWESHIEK-CASS-ADAIR-MADISON-
WARREN-MARION-MAHASKA-ADAMS-UNION-CLARKE-LUCAS-MONROE-WAPELLO-
TAYLOR-RINGGOLD-DECATUR-WAYNE-APPANOOSE-DAVIS-
1115 PM CDT WED JUN 29 2005

THIS HAZARDOUS WEATHER OUTLOOK IS FOR PORTIONS OF SOUTH CENTRAL
AND CENTRAL IOWA MAINLY SOUTH OF HIGHWAY 30.

.DAY ONE...TONIGHT

CLUSTERS OF THUNDERSTORMS WILL CONTINUE TO MOVE EAST ACROSS CENTRAL
IOWA...MAINLY SOUTH OF INTERSTATE 80.  THE MAIN THREAT WILL BE
DAMAGING WIND AND NICKEL HAIL.  THE BEST TIME FOR SEVERE WEATHER IS
THROUGH 1 AM.

.DAYS TWO THROUGH SEVEN...THURSDAY THROUGH TUESDAY

THUNDERSTORMS WILL BE POSSIBLE ACROSS THE AREA SUNDAY AND SUNDAY
NIGHT. A FEW SEVERE STORMS AND LOCALLY HEAVY RAINFALL WILL BE
POSSIBLE.

.SPOTTER INFORMATION STATEMENT...

SPOTTER ACTIVATION IS LIKELY TONIGHT THROUGH 1 AM. ADDITIONAL
SPOTTER ACTIVATION MAY BE NEEDED ON SUNDAY.

FAB

In the hours before

Local storm report, Jun 29, 10:32 PM CDT, 1 hour 9 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE DES MOINES IA
1032 PM CDT WED JUN 29 2005

..TIME...   ...EVENT...      ...CITY LOCATION...     ...LAT.LON...
..DATE...   ....MAG....      ..COUNTY LOCATION..ST.. ...SOURCE....
            ..REMARKS..

0730 PM     TSTM WND DMG     7 NW MANNING            41.98N 95.16W
06/29/2005                   CRAWFORD           IA   BROADCAST MEDIA

            DELAYED REPORT. 40X80 FOOT STORAGE BUILDING DESTROYED.
            FROM KCCI.

&&

SMALL

Local storm report, Jun 29, 10:50 PM CDT, 51 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE DES MOINES IA
1050 PM CDT WED JUN 29 2005

..TIME...   ...EVENT...      ...CITY LOCATION...     ...LAT.LON...
..DATE...   ....MAG....      ..COUNTY LOCATION..ST.. ...SOURCE....
            ..REMARKS..

1040 PM     TSTM WND DMG     2 N LAUREL              41.91N 92.92W
06/29/2005                   MARSHALL           IA   AMATEUR RADIO

            TREES AND POWER LINES DOWN OVER HIGHWAY 14.

1047 PM     HAIL             CRESTON                 41.06N 94.36W
06/29/2005  0.75 INCH        UNION              IA   AMATEUR RADIO

0958 PM     TSTM WND DMG     ANKENY                  41.72N 93.61W
06/29/2005                   POLK               IA   AMATEUR RADIO

            18 TO 24 INCH TREES DOWN NORTHERN ANKNEY ALONG HIGHWAY
            69.

1046 PM     HAIL             CRESTON                 41.06N 94.36W
06/29/2005  0.75 INCH        UNION              IA   BROADCAST MEDIA

            FROM KCCI.

&&

SMALL

Local storm report, Jun 29, 11:03 PM CDT, 38 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE DES MOINES IA
1103 PM CDT WED JUN 29 2005

..TIME...   ...EVENT...      ...CITY LOCATION...     ...LAT.LON...
..DATE...   ....MAG....      ..COUNTY LOCATION..ST.. ...SOURCE....
            ..REMARKS..

1036 PM     TSTM WND GST     2 N LAUREL              41.91N 92.92W
06/29/2005  65 MPH           MARSHALL           IA   AMATEUR RADIO

1050 PM     TSTM WND DMG     TAMA                    41.96N 92.57W
06/29/2005                   TAMA               IA   LAW ENFORCEMENT

            NUMEROUS TREES AND POWER LINES DOWN.

&&

SMALL

Local storm report, Jun 29, 11:13 PM CDT, 28 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE DES MOINES IA
1113 PM CDT WED JUN 29 2005

..TIME...   ...EVENT...      ...CITY LOCATION...     ...LAT.LON...
..DATE...   ....MAG....      ..COUNTY LOCATION..ST.. ...SOURCE....
            ..REMARKS..

0845 PM     TSTM WND DMG     STANHOPE                42.29N 93.79W
06/29/2005                   HAMILTON           IA   LAW ENFORCEMENT

            SEMI TRUCK BLOWN OVER NEAR THE FLYING J TRUCK STOP.
            DELAYED REPORT.

&&

SMALL

Local storm report, Jun 29, 11:21 PM CDT, 20 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE DES MOINES IA
1121 PM CDT WED JUN 29 2005

..TIME...   ...EVENT...      ...CITY LOCATION...     ...LAT.LON...
..DATE...   ....MAG....      ..COUNTY LOCATION..ST.. ...SOURCE....
            ..REMARKS..

1116 PM     TSTM WND DMG     TAMA                    41.96N 92.57W
06/29/2005                   TAMA               IA   AMATEUR RADIO

            6 INCH TREE LIMBS DOWN.

&&

SMALL

Local storm report, Jun 29, 11:32 PM CDT, 9 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE DES MOINES IA
1132 PM CDT WED JUN 29 2005

..TIME...   ...EVENT...      ...CITY LOCATION...     ...LAT.LON...
..DATE...   ....MAG....      ..COUNTY LOCATION..ST.. ...SOURCE....
            ..REMARKS..

1128 PM     HAIL             8 NW OSCEOLA            41.11N 93.88W
06/29/2005  0.75 INCH        CLARKE             IA   TRAINED SPOTTER

            45 TO 50 MPH WINDS.

&&

RVACHALE

The office that day

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

Issued	Product	Office	Counties	Lasted
Jun 29, 7:20 PM CDT	Severe Thunderstorm Warning	DMX	Audubon	42 min
Jun 29, 7:22 PM CDT	Severe Thunderstorm Warning	DMX	Carroll, Crawford	38 min
Jun 29, 7:46 PM CDT	Severe Thunderstorm Warning	DMX	Greene	45 min
Jun 29, 7:53 PM CDT	Severe Thunderstorm Warning	DMX	Calhoun	52 min
Jun 29, 7:53 PM CDT	Tornado Warning	DMX	Emmet	37 min
Jun 29, 8:05 PM CDT	Severe Thunderstorm Warning	DMX	Carroll	29 min
Jun 29, 8:10 PM CDT	Severe Thunderstorm Warning	DMX	Webster	70 min
Jun 29, 8:15 PM CDT	Severe Thunderstorm Warning	DMX	Boone	46 min
Jun 29, 8:24 PM CDT	Severe Thunderstorm Warning	DMX	Cass	51 min
Jun 29, 8:29 PM CDT	Severe Thunderstorm Warning	DMX	Hamilton	54 min
Jun 29, 8:36 PM CDT	Severe Thunderstorm Warning	DMX	Audubon, Guthrie	39 min
Jun 29, 8:41 PM CDT	Severe Thunderstorm Warning	DMX	Adair	34 min
Jun 29, 8:45 PM CDT	Severe Thunderstorm Warning	DMX	Story	27 min
Jun 29, 8:50 PM CDT	Severe Thunderstorm Warning	DMX	Wright	31 min
Jun 29, 8:52 PM CDT	Severe Thunderstorm Warning	DMX	Hardin	58 min
Jun 29, 8:54 PM CDT	Severe Thunderstorm Warning	DMX	Franklin	64 min
Jun 29, 9:06 PM CDT	Severe Thunderstorm Warning	DMX	Dallas	42 min
Jun 29, 9:19 PM CDT	Severe Thunderstorm Warning	DMX	Butler, Grundy	59 min
Jun 29, 9:27 PM CDT	Severe Thunderstorm Warning	DMX	Cerro Gordo	28 min
Jun 29, 9:33 PM CDT	Severe Thunderstorm Warning	DMX	Cass	42 min
Jun 29, 9:49 PM CDT	Severe Thunderstorm Warning	DMX	Bremer	60 min
Jun 29, 10:00 PM CDT	Severe Thunderstorm Warning	DMX	Union	31 min
Jun 29, 10:11 PM CDT	Severe Thunderstorm Warning	DMX	Jasper	49 min
Jun 29, 10:22 PM CDT	Severe Thunderstorm Warning	DMX	Marshall	41 min
Jun 29, 10:41 PM CDT	Severe Thunderstorm Warning	DMX	Poweshiek, Tama	49 min
Jun 29, 11:04 PM CDT	Severe Thunderstorm Warning	DMX	Clarke, Union	63 min
Jun 29, 11:14 PM CDT	Severe Thunderstorm Warning	DMX	Ringgold, Taylor	67 min
Jun 29, 11:55 PM CDT	Severe Thunderstorm Warning	DMX	Marion	53 min
Jun 30, 12:05 AM CDT	Severe Thunderstorm Warning	DMX	Monroe	42 min
Jun 30, 12:18 AM CDT	Severe Thunderstorm Warning	DMX	Decatur, Ringgold	59 min
Jun 30, 12:22 AM CDT	Severe Thunderstorm Warning	DMX	Mahaska	54 min

Nearby

Severe Thunderstorm Warnings in Iowa, 2005 Every severe thunderstorm warning in 2005

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.