Alert archive / Iowa / Severe Thunderstorm Warnings in 2005

Severe Thunderstorm Warning 201, NWS Des Moines, IA

June 29, 2005Union County, Iowa

NWS Des Moines, IA issued this severe thunderstorm warning at Jun 29, 2005, 10:00 PM CDT for Union County, Iowa. It was in force for 31 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: Jun 29, 2005, 10:00 PM CDT (03:00 UTC)
Expired: Jun 29, 2005, 10:31 PM CDT
In force: 31 min
Issued by: NWS Des Moines, IA
Area: Counties, with a storm outline in the text

County Union County, IA

The radar

The Des Moines radar (KDMX), 89 km from the middle of the area, began a volume at 03:03 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.

Did it verify

Not verified. The Iowa Environmental Mesonet's Cow found no qualifying storm report inside this severe thunderstorm warning while it was in force. That is not proof nothing happened: reports are thin where few people live.

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, 3.0 hours before the alert went out and 175 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 300300
SVRDMX
IAC175-300345-
/O.NEW.KDMX.SV.W.0201.050630T0300Z-050630T0345Z/

BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE DES MOINES IA
1000 PM CDT WED JUN 29 2005

THE NATIONAL WEATHER SERVICE IN DES MOINES HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...
  UNION COUNTY IN SOUTH CENTRAL IOWA.

* UNTIL 1045 PM CDT.

* AT 955 PM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
  SEVERE THUNDERSTORM CAPABLE OF PRODUCING DAMAGING WINDS IN EXCESS
  OF 60 MPH.  THIS STORM WAS LOCATED NEAR CRESTON...OR 56 MILES
  SOUTHWEST OF DES MOINES...AND MOVING EAST AT 50 MPH.

* THE SEVERE THUNDERSTORM WILL BE...
  NEAR AFTON BY 1005 PM CDT.
  NEAR THAYER BY 1015 PM CDT.

THE LOCATIONS OF CRESTON MUNICIPAL AIRPORT...ARISPE AND LORIMOR ARE
ALSO IN THE PATH OF THIS SEVERE THUNDERSTORM.

MOVE TO AN INTERIOR ROOM AND STAY AWAY FROM WINDOWS. IF YOU LIVE IN A
MOBILE HOME...SEEK SHELTER IN A STURDY BUILDING.

LAT...LON 4115 9449 4091 9448 4091 9403 4116 9403

$$

JUNGBLUTH

2 follow-up statements

000 
WWUS53 KDMX 300319
SVSDMX

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE DES MOINES IA
1019 PM CDT WED JUN 29 2005

IAC175-300345-
/O.CON.KDMX.SV.W.0201.000000T0000Z-050630T0345Z/
UNION IA-
1019 PM CDT WED JUN 29 2005

...A SEVERE THUNDERSTORM WARNING CONTINUES FOR UNION COUNTY UNTIL
1045 PM CDT...

AT 1016 PM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
SEVERE THUNDERSTORM CAPABLE OF PRODUCING DAMAGING WINDS IN EXCESS OF
60 MPH.  THIS STORM WAS LOCATED 14 MILES EAST OF CRESTON...OR 44
MILES SOUTHWEST OF DES MOINES...AND MOVING EAST AT 40 MPH.

THIS SEVERE THUNDERSTORM WILL REMAIN OVER MAINLY RURAL AREAS OF UNION
COUNTY...INCLUDING THE LOCATIONS OF THAYER AND LORIMOR.


LAT...LON 4115 9449 4091 9448 4091 9403 4116 9403

$$

JUNGBLUTH

000 
WWUS53 KDMX 300331
SVSDMX

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE DES MOINES IA
1030 PM CDT WED JUN 29 2005

IAC175-300340-
/O.CAN.KDMX.SV.W.0201.000000T0000Z-050630T0345Z/
UNION IA-
1030 PM CDT WED JUN 29 2005

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

AT 1029 PM 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.

ADDITIONAL THUNDERSTORMS ARE HEADING TOWARD UNION COUNTY FROM THE 
SOUTHWEST AND MAY PRODUCE SMALL HAIL AS THEY MOVE TOWARD CRESTON BY 
1100 PM THIS EVENING. 

IF SEVERE WEATHER WAS OBSERVED...CONTACT THE NATIONAL WEATHER SERVICE
OFFICE IN DES MOINES AT 1-800-759-9276.


LAT...LON 4115 9449 4091 9448 4091 9403 4116 9403

$$

JUNGBLUTH

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, 6 hours 25 minutes earlier.

Area forecast discussion, Jun 29, 3:35 PM CDT, 6 hours 25 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, 5:55 PM CDT, 4 hours 5 minutes before

HAZARDOUS WEATHER OUTLOOK
NATIONAL WEATHER SERVICE DES MOINES IA
555 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-
555 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 OVERSPREAD THE REMAINDER OF THE AREA THIS
EVENING. SEVERE STORMS ARE LIKELY WITH THIS ACTIVITY. SUPERCELLS
WITH GOLFBALL SIZED HAIL...70 MPH WINDS AND AN ISOLATED TORNADO WILL
BE POSSIBLE INITIALLY WEST OF INTERSTATE 35. THESE STORMS MAY EVOLVE
INTO A DAMAGING WIND EVENT AS IT PROGRESSES TO THE EAST WITH THE
MAIN THREAT BECOMING STRAIGHT LINE WINDS UP TO 75 MPH.

.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 THIS EVENING THROUGH 11 PM. 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-
555 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

THUNDERSTORMS WILL OVERSPREAD THE REMAINDER OF THE AREA THIS
EVENING. SEVERE STORMS ARE POSSIBLE WITH QUARTER SIZED HAIL AND WIND
GUSTS TO 65 MPH BEING THE MAIN THREATS. AN ISOLATED TORNADO WILL BE
POSSIBLE EARLY THIS EVENING WEST OF INTERSTATE 35. DAMAGING WINDS
WILL BECOME THE PRIMARY THREAT AFTER 9 PM AS THE STORMS PROGRESS TO
THE EAST.

.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.

DONAVON/KINNEY/FAB

In the hours before

Local storm report, Jun 29, 9:07 PM CDT, 53 minutes before

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

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

0900 PM     TSTM WND GST     2 N BUCKEYE             42.45N 93.38W
06/29/2005  75 MPH           HARDIN             IA   STORM CHASER

0905 PM     TSTM WND DMG     4 SW PANORA             41.65N 94.42W
06/29/2005                   GUTHRIE            IA   LAW ENFORCEMENT

            HIGHWAY 25 AND MONTEITH RD.

&&

SMALL

Local storm report, Jun 29, 9:26 PM CDT, 34 minutes before

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

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

0902 PM     TSTM WND DMG     7 NW JEFFERSON          42.09N 94.47W
06/29/2005                   GREENE             IA   BROADCAST MEDIA

            TREES DOWN. FROM KCCI.

0812 PM     TSTM WND DMG     1 W PATON               42.16N 94.27W
06/29/2005                   GREENE             IA   BROADCAST MEDIA

            COUNTY ROAD E18 WEST OF PATON...STEEL BUILDING
            DEMOLISHED. FROM KCCI.

&&

SMALL

Local storm report, Jun 29, 9:28 PM CDT, 32 minutes before

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

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

0918 PM     TSTM WND DMG     HAMPTON                 42.74N 93.20W
06/29/2005                   FRANKLIN           IA   LAW ENFORCEMENT

            TREES DOWN OF UNKOWN SIZE IN HAMPTON.

&&

MR

Local storm report, Jun 29, 9:31 PM CDT, 29 minutes before

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

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

0918 PM     TSTM WND DMG     6 E POPEJOY             42.59N 93.31W
06/29/2005                   FRANKLIN           IA   LAW ENFORCEMENT

            TREES DOWN OF UNKOWN SIZE.

&&

MR

Local storm report, Jun 29, 9:35 PM CDT, 25 minutes before

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

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

0835 PM     TSTM WND DMG     5 SE DAKOTA CITY        42.67N 94.13W
06/29/2005                   HUMBOLDT           IA   TRAINED SPOTTER

            SEVERAL 6 INCH DIAMTER TREE BRANCHES DOWN. CORN
            FLATTENED.

&&

SMALL

Local storm report, Jun 29, 9:46 PM CDT, 14 minutes before

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

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

0910 PM     TSTM WND DMG     4 N IOWA FALLS          42.58N 93.27W
06/29/2005                   FRANKLIN           IA   TRAINED SPOTTER

            LARGE TREE DOWN ALONG HIGHWAY S41.

0945 PM     HAIL             4 ESE ATLANTIC MUNICIPA 41.39N 94.99W
06/29/2005  0.88 INCH        CASS               IA   TRAINED SPOTTER

            60 MPH WIND AS WELL.

&&

SMALL

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, 10:11 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, 11:41 PM CDT	Severe Thunderstorm Warning	DMX	Lucas, Warren	52 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; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.