Alert archive / Iowa / Severe Thunderstorm Warnings in 2005

Severe Thunderstorm Warning 187, NWS Des Moines, IA

June 29, 2005Boone County, Iowa

NWS Des Moines, IA issued this severe thunderstorm warning at Jun 29, 2005, 8:15 PM CDT for Boone County, Iowa. It was in force for 46 min. 3 reports 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, 8:15 PM CDT (01:15 UTC)
Expired: Jun 29, 2005, 9:01 PM CDT
In force: 46 min
Issued by: NWS Des Moines, IA
Area: Counties, with a storm outline in the text

County Boone County, IA

The radar

The Des Moines radar (KDMX), 46 km from the middle of the area, began a volume at 01:16 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, 8:24 PM CDT	TSTM WND GST 70	6 N Ogden, IA	TREE DAMAGE. SOME SMALL HAIL.
Jun 29, 8:32 PM CDT	TSTM WND DMG	9 Nw Ogden, IA	TREES DOWN ON HIGHWAY 169. REMOVED BY BUS LOAD OF PEOPLE.
Jun 29, 8:32 PM CDT	TSTM WND DMG	Boxholm, IA	CAMPER TRAILER OVERTURNED. TREES ON HIGHWAY 169. FROM KCCI.

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 3 storm reports to this severe thunderstorm warning; the first came 9 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, 4:50 PM CDT	Severe Thunderstorm Watch	SPC	6 hr

The nearest sounding before it

Omaha, NE (KOAX), launched 00:00Z, 1.3 hours before the alert went out and 215 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 300115
SVRDMX
IAC015-300215-
/O.NEW.KDMX.SV.W.0187.050630T0115Z-050630T0215Z/

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

THE NATIONAL WEATHER SERVICE IN DES MOINES HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...
  BOONE COUNTY IN CENTRAL IOWA.

* UNTIL 915 PM CDT.

* AT 812 PM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
  SEVERE THUNDERSTORM CAPABLE OF PRODUCING NICKEL SIZE HAIL...AND
  DESTRUCTIVE WINDS IN EXCESS OF 70 MPH.  THIS STORM WAS LOCATED 9
  MILES NORTHEAST OF JEFFERSON...OR 30 MILES SOUTH OF FORT DODGE...
  AND MOVING EAST AT 50 MPH.

* THE SEVERE THUNDERSTORM WILL BE...
  NEAR OGDEN BY 820 PM CDT.
  NEAR FRASER BY 825 PM CDT.
  NEAR BOONE BY 830 PM CDT.
  NEAR BOONE MUNICIPAL AIRPORT BY 835 PM CDT.

THE LOCATIONS OF BEAVER AND PILOT MOUND ARE ALSO IN THE PATH OF THIS
SEVERE THUNDERSTORM.

GO TO A BASEMENT OR SMALL INTERIOR ROOM. EXTENSIVE DAMAGE IS LIKELY.
EVACUATE MOBILE HOMES...AND SEEK SHELTER IN A STURDY BUILDING. SEVERE
STRAIGHT LINE WINDS CAN SOUND LIKE A TORNADO...AND PRODUCE SIMILAR
DAMAGE.

LAT...LON 4219 9418 4190 9416 4198 9374 4219 9373

$$

COGIL

2 follow-up statements

000 
WWUS53 KDMX 300137
SVSDMX

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

IAC015-300215-
/O.CON.KDMX.SV.W.0187.000000T0000Z-050630T0215Z/
BOONE IA-
836 PM CDT WED JUN 29 2005

...A SEVERE THUNDERSTORM WARNING CONTINUES FOR BOONE COUNTY UNTIL 915
PM CDT...

AT 833 PM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
SEVERE THUNDERSTORM CAPABLE OF PRODUCING NICKEL SIZE HAIL...AND
DESTRUCTIVE HURRICANE FORCE WINDS IN EXCESS OF 80 MPH. ACTIVATION OF
LOCAL WARNING SYSTEMS IS RECOMMENDED.  THIS STORM WAS LOCATED 6 MILES
NORTHWEST OF BOONE...OR 29 MILES SOUTHEAST OF FORT DODGE...AND MOVING
EAST AT 60 MPH.

THIS SEVERE THUNDERSTORM WILL REMAIN OVER MAINLY RURAL AREAS OF BOONE
COUNTY...INCLUDING THE LOCATION OF FRASER.

FOR YOUR PROTECTION MOVE TO AN INTERIOR ROOM ON THE LOWEST FLOOR OF
YOUR HOME OR BUSINESS. THIS STORM HAS THE POTENTIAL TO CAUSE SERIOUS
INJURY AND SIGNIFICANT DAMAGE TO PROPERTY.

THIS STORM HAS A HISTORY OF PRODUCING WIDESPREAD WIND DAMAGE ACROSS 
NORTHERN BOONE COUNTY. 70 MPH WINDS WITH TREE DAMAGE WAS REPORTED AT 
8:24 PM...6 MILES NORTH OF OGDEN. THIS IS AN EXTREMELY DANGEROUS 
SITUATION. SEEK SHELTER NOW INSIDE A STURDY STRUCTURE AND STAY AWAY 
FROM WINDOWS

LAT...LON 4219 9418 4190 9416 4198 9374 4219 9373

$$

COGIL

000 
WWUS53 KDMX 300201
SVSDMX

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

IAC015-300211-
/O.CAN.KDMX.SV.W.0187.000000T0000Z-050630T0215Z/
BOONE IA-
901 PM CDT WED JUN 29 2005

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

AT 859 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.

LAT...LON 4219 9418 4190 9416 4198 9374 4219 9373

$$

COGIL

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, 4 hours 40 minutes earlier.

Area forecast discussion, Jun 29, 3:35 PM CDT, 4 hours 40 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, 2 hours 20 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, 7:33 PM CDT, 42 minutes before

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

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

0726 PM     TSTM WND DMG     5 E MANILLA             41.88N 95.14W
06/29/2005                   CRAWFORD           IA   TRAINED SPOTTER

            TREES DOWN. WINDS ESTIMATTED 60 TO 70 MPH.

&&

RPK

Local storm report, Jun 29, 7:40 PM CDT, 35 minutes before

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

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

0734 PM     HAIL             3 S MANNING             41.87N 95.05W
06/29/2005  0.88 INCH        CARROLL            IA   TRAINED SPOTTER

&&

RPK

Local storm report, Jun 29, 7:52 PM CDT, 23 minutes before

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

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

0740 PM     TSTM WND DMG     CARROLL                 42.07N 94.86W
06/29/2005                   CARROLL            IA   LAW ENFORCEMENT

            NUMEROUS TREES DOWN. NICKEL HAIL AS WELL.

&&

SMALL

Local storm report, Jun 29, 8:03 PM CDT, 12 minutes before

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

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

0802 PM     TSTM WND GST     5 E MANILLA             41.89N 95.14W
06/29/2005  60 MPH           CRAWFORD           IA   TRAINED SPOTTER

&&

SMALL

Local storm report, Jun 29, 8:11 PM CDT, 4 minutes before

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

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

0758 PM     TSTM WND DMG     SCRANTON                42.02N 94.55W
06/29/2005                   GREENE             IA   AMATEUR RADIO

            SIDING BLOW OFF HOUSE. WINDS IN EXCESS OF 60 MPH.

&&

SMALL

Local storm report, Jun 29, 8:14 PM CDT, 1 minute before

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

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

0811 PM     TSTM WND GST     FARNHAMVILLE            42.28N 94.42W
06/29/2005  71 MPH           CALHOUN            IA   MESONET

            KCCI SCHOOLNET AND IOWA ENVIRONMENTAL MESONET.

0808 PM     HAIL             LOHRVILLE               42.27N 94.55W
06/29/2005  0.88 INCH        CALHOUN            IA   LAW ENFORCEMENT

&&

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, 8:24 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, 11:41 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; local storm reports from the same archive; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.