Damaging Wind in Iowa, August 3, 2004

Name: Damaging Wind in Iowa, August 3, 2004
Start: 2004-08-03T21:07
End: 2004-08-03T21:07
Location: Iowa

August 3, 2004 · NWS OAX · 1 event in 1 county or zone

1 thunderstorm wind, as filed by the National Weather Service.

Where it happened

Every event with a place to put it. Tap one for its entry below.

Tornadoes
Tropical storms and surge
Floods
Wind
Hail
Winter weather
Heat and drought
Cold
Fire, smoke and dust
Marine and coastal
Other

Open the live radar over this ground

The toll

Deaths: 0
Injuries: 0
Property damage: None recorded
Crop damage: None recorded
Events: 1

Deaths and injuries are direct and indirect together, as the offices filed them. Damage is property and crops in the dollars of the year, not adjusted for inflation, and only where an office estimated it.

What forecasters said that day

The local office's own words before the first event, as it sent them, from the Iowa Environmental Mesonet's archive of National Weather Service text.

NWS Omaha, NE wrote its last area forecast discussion before the first event at Aug 3, 2:15 PM CST, 6 hours 52 minutes earlier.

Area forecast discussion, Aug 3, 2:15 PM CST, 6 hours 52 minutes before

AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE OMAHA/VALLEY NE
315 PM CDT WED AUG 3 2004

.DISCUSSION...
THE PRIMARY FORECAST CHALLENGES WILL BE TEMPERATURES...ALONG WITH
TIMING OF FRONTS AND POPS.

THERE IS STILL SOME QUESTION ABOUT WHETHER FOG SHOULD BE MENTIONED
IN FCST TONIGHT.  MODELS INSIST ON LOW LEVEL DRY ADVECTION...BUT DEW
POINTS HAVE REMAINED STUBBORNLY HIGH ALL DAY...AND IT WILL NOT TAKE
MUCH RADIATION TO DROP BELOW CURRENT DEW POINTS.  DECIDED TO MENTION
PATCHY FOG TOWARD MORNING FOR ALL BUT DRIER AREA IN NORTHEAST NEB.

THU WILL BE COOL AND DRY.  FIRST CHC OF PRECIP COMES WITH RETURN
FLOW IN NORTHEAST NEB LATE THU NIGHT.  MID LEVEL MOISTURE IS PROGGED
TO INCREASE ON FRIDAY...AND DID NOT MUCH CHANGE LOW POPS ALREADY IN
THE FORECAST.

A SOMEWHAT BETTER CHANCE FOR PRECIP DURING THE WEEKEND...AS RETURN
FLOW MOISTURE INCREASES AHEAD OF A COLD FRONT.  MODELS HAVE SOME
TIMING DIFFERENCES...SO EXACT TIMING IS UNCERTAIN.  POPS WILL DEPEND
ON HOW WELL FRONT CORRESPONDS WITH DAYTIME HEATING.  TEMPS LIKELY
WARMEST IN PREFRONTAL REGIME FRI NIGHT AND SAT...THEN BEGIN DROPPING
LATER IN THE WEEKEND AS FRONT MOVES THOUGH.

MODELS DO NOT AGREE ON THE TIMING OR INTENSITY OF THE WAVE DROPPING
OUT OF THE NORTHERN PLAINS INTO THE UPPER MIDWEST EARLY NEXT WEEK.
ACCEPT HPC IDEA THAT THIS WILL BRING ANOTHER PUSH OF UNSEASONABLY
COOL AIR AND GENERALLY DRY CONDITIONS...ALTHOUGH DETAILS ARE UP FOR
GRABS THIS FAR OUT.

&&

.OAX WATCHES/WARNINGS/ADVISORIES...
NE...NONE.
IA...NONE.

&&

POLLACK

Hazardous weather outlook, Aug 3, 4:16 PM CST, 4 hours 51 minutes before

HAZARDOUS WEATHER OUTLOOK
NATIONAL WEATHER SERVICE OMAHA/VALLEY NE
516 PM CDT TUE AUG 3 2004

IAZ043-055-056-069-079-080-090-091-NEZ015-031>034-042>045-050>053-
065>068-041100-
BURT-BUTLER-CASS-COLFAX-CUMING-DODGE-DOUGLAS-FREMONT IA-HARRISON IA-
LANCASTER-MADISON-MILLS IA-MONONA IA-MONTGOMERY IA-OTOE-PAGE IA-
PLATTE-POTTAWATTAMIE IA-SARPY-SAUNDERS-SEWARD-SHELBY IA-STANTON-
THURSTON-WASHINGTON-
516 PM CDT TUE AUG 3 2004

THIS HAZARDOUS WEATHER OUTLOOK IS FOR PARTS OF EASTERN NEBRASKA AND
SOUTHWEST IOWA.

.DAY ONE...TONIGHT AND WEDNESDAY

TORNADO WATCH...# 700...IS IN EFFECT UNTIL 10PM CDT.

SCATTERED THUNDERSTORMS WILL RAPIDLY DEVELOP ACROSS THE OUTLOOK AREA
THIS EVENING. STORMS ARE EXPECTED TO BECOME SEVERE WITH TORNADOES...
HAIL TO 2.5 INCHES IN DIAMETER...THUNDERSTORM WIND GUSTS TO 80 MPH...
AND DANGEROUS LIGHTNING THE MAIN HAZARDS.

THERE IS A SLIGHT CHANCE FOR THUNDERSTORMS AGAIN ON WEDNESDAY...BUT
NO SEVERE WEATHER IS EXPECTED.

.DAYS TWO THROUGH SEVEN...WEDNESDAY NIGHT THROUGH TUESDAY

CHANCES FOR THU8NDERSTORMS CONTINUE FRIDAY THROUGH TUESDAY. SOME OF
THESE STORMS MAY BE SEVERE WITH DAMAGING WINDS AND LARGE HAIL THE
PRIMARY HAZARDS. HOWEVER...WIDESPREAD HAZARDOUS WEATHER IS NOT
EXPECTED AT THIS TIME.

.SPOTTER INFORMATION STATEMENT...

STORM SPOTTERS ACTIVATION WILL BE NEEDED TONIGHT.

NEZ011-012-016>018-030-078-088>093-041100-
ANTELOPE-BOONE-CEDAR-GAGE-JEFFERSON-JOHNSON-KNOX-NEMAHA-PAWNEE-
PIERCE-RICHARDSON-SALINE-WAYNE-
516 PM CDT TUE AUG 3 2004

THIS HAZARDOUS WEATHER OUTLOOK IS FOR PARTS OF EASTERN NEBRASKA AND
SOUTHWEST IOWA.

.DAY ONE...TONIGHT AND WEDNESDAY

SCATTERED THUNDERSTORMS WILL BE POSSIBLE ACROSS THE OUTLOOK AREA
TONIGHT. SOME STORMS MAY BECOME SEVERE WITH LARGE HAIL AND DAMAGING
WINDS THE PRIMARY HAZARDS.

.DAYS TWO THROUGH SEVEN...WEDNESDAY NIGHT THROUGH TUESDAY

CHANCES FOR THUNDERSTORMS CONTINUE FRIDAY THROUGH TUESDAY. SOME OF
THESE STORMS MAY BE SEVERE WITH DAMAGING WINDS AND LARGE HAIL THE
PRIMARY HAZARDS. HOWEVER...WIDESPREAD HAZARDOUS WEATHER IS NOT
EXPECTED AT THIS TIME.

.SPOTTER INFORMATION STATEMENT...

STORM SPOTTERS ACTIVATION MAY BE NEEDED TONIGHT.

DEE

In the hours before

Local storm report, Aug 3, 7:09 PM CST, 1 hour 58 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE OMAHA NE
809 PM CDT TUE AUG 03 2004

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

0745 PM     TSTM WND DMG     GLENWOOD                41.05N 95.74W
08/03/2004                   MILLS              IA   LAW ENFORCEMENT

            WINDOWS BROKEN AT GLENWOOD POLICE DEPT. POWER LINES DOWN.
            APPROXIMATELY 200 RESIDENTS WITHOUT POWER ACROSS MILLS
            COUNTY.

&&

MEB

Local storm report, Aug 3, 7:35 PM CST, 1 hour 32 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE OMAHA NE
835 PM CDT TUE AUG 03 2004

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

0825 PM     TSTM WND DMG     MISSOURI VALLEY         41.56N 95.90W
08/03/2004                   HARRISON           IA   TRAINED SPOTTER

            LARGE TREE LIMBS BLOWN DOWN. WIND SPEEDS ESTIMATED 60
            MPH.

&&

MEB

Local storm report, Aug 3, 7:38 PM CST, 1 hour 29 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE OMAHA NE
838 PM CDT TUE AUG 03 2004

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

0530 PM     TSTM WND DMG     1 S FREMONT             41.43N 96.49W
08/03/2004                   DODGE              NE   TRAINED SPOTTER

            NUMEROUS LARGE TREES DOWN ALONG PLATTE RIVER SOUTH OF
            FREMONT

&&

BG

Local storm report, Aug 3, 8:33 PM CST, 34 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE OMAHA NE
933 PM CDT TUE AUG 03 2004

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

0643 PM     HAIL             ELKHORN                 41.28N 96.24W
08/03/2004  0.75 INCH        DOUGLAS            NE   NWS EMPLOYEE

&&

BG

Local storm report, Aug 3, 8:50 PM CST, 17 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE OMAHA NE
950 PM CDT TUE AUG 03 2004

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

0846 PM     FUNNEL CLOUD     7 SE HENDERSON          41.07N 95.34W
08/03/2004                   MONTGOMERY         IA   PUBLIC

0850 PM     TSTM WND DMG     1 W RED OAK             41.01N 95.24W
08/03/2004                   MONTGOMERY         IA   LAW ENFORCEMENT

            LARGE TREES DOWN

0930 PM     TSTM WND GST     1 W RED OAK             41.01N 95.24W
08/03/2004  60 MPH           MONTGOMERY         IA   AMATEUR RADIO

&&

BG

Local storm report, Aug 3, 8:59 PM CST, 8 minutes before

PRELIMINARY LOCAL STORM REPORT ... SUMMARY
NATIONAL WEATHER SERVICE OMAHA NE
959 PM CDT TUE AUG 03 2004

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

0530 PM     TSTM WND DMG     1 S FREMONT             41.43N 96.49W
08/03/2004                   DODGE              NE   TRAINED SPOTTER

            NUMEROUS LARGE TREES DOWN ALONG PLATTE RIVER SOUTH OF
            FREMONT

0555 PM     HAIL             CEDAR BLUFFS            41.40N 96.61W
08/03/2004  0.75 INCH        SAUNDERS           NE   TRAINED SPOTTER

0600 PM     HAIL             FREMONT                 41.44N 96.49W
08/03/2004  2.00 INCH        DODGE              NE   LAW ENFORCEMENT

0613 PM     TSTM WND GST     5 W MEAD                41.23N 96.59W
08/03/2004  75 MPH           SAUNDERS           NE   LAW ENFORCEMENT

            BETWEEN MEAD AND WAHOO

0615 PM     TSTM WND GST     1 S LESHARA             41.32N 96.43W
08/03/2004  75 MPH           SAUNDERS           NE   AMATEUR RADIO

0615 PM     TSTM WND GST     1 W VALLEY              41.31N 96.37W
08/03/2004  58 MPH           DOUGLAS            NE   NWS EMPLOYEE

            VALLEY WEATHER FORECAST OFFICE

0620 PM     TSTM WND DMG     4 W LESHARA             41.33N 96.51W
08/03/2004                   SAUNDERS           NE   LAW ENFORCEMENT

            7-8 LARGE TREES DOWN

0622 PM     HAIL             4 W LESHARA             41.33N 96.51W
08/03/2004  1.75 INCH        SAUNDERS           NE   AMATEUR RADIO

0628 PM     HAIL             1 W VALLEY              41.31N 96.37W
08/03/2004  0.75 INCH        DOUGLAS            NE   OFFICIAL NWS OBS

            WEATHER SERVICE FORECAST OFFICE

0643 PM     HAIL             ELKHORN                 41.28N 96.24W
08/03/2004  0.75 INCH        DOUGLAS            NE   NWS EMPLOYEE

0650 PM     TSTM WND GST     OMAHA                   41.26N 96.01W
08/03/2004  65 MPH           DOUGLAS            NE   LAW ENFORCEMENT

            156TH AND DODGE STREET ESTIMATED 60 TO 70 MPH

0655 PM     DOWNBURST        OMAHA                   41.26N 96.01W
08/03/2004                   DOUGLAS            NE   NWS EMPLOYEE

            NUMEROUS LARGE BRANCHES...AND SEVERAL MAPLE TREES DOWN IN
            CENTRAL OMAHA. WIND SPEEDS ESTIMATED AROUND 70 MPH.

0706 PM     HAIL             1 N ELKHORN             41.30N 96.24W
08/03/2004  1.25 INCH        DOUGLAS            NE   OFFICIAL NWS OBS

0730 PM     TSTM WND DMG     OMAHA                   41.26N 96.01W
08/03/2004                   DOUGLAS            NE   TRAINED SPOTTER

            DOWNED TREES COVERING 180TH ST SOUTH OF IDA

0730 PM     TSTM WND DMG     OMAHA                   41.26N 96.01W
08/03/2004                   DOUGLAS            NE   TRAINED SPOTTER

            LARGE TREE BLOCKING ROAD ON 180TH ST BETWEEN MAPLE AND
            BLONDO.

0745 PM     TSTM WND DMG     GLENWOOD                41.05N 95.74W
08/03/2004                   MILLS              IA   LAW ENFORCEMENT

            WINDOWS BROKEN AT GLENWOOD POLICE DEPT. POWER LINES DOWN.
            APPROXIMATELY 200 RESIDENTS WITHOUT POWER ACROSS MILLS
            COUNTY.

0750 PM     HAIL             BELLEVUE                41.16N 95.92W
08/03/2004  1.25 INCH        SARPY              NE   PUBLIC

0756 PM     HAIL             5 NW SILVER CITY        41.16N 95.71W
08/03/2004  1.00 INCH        MILLS              IA   LAW ENFORCEMENT

            OCCURRED IN MINEOLA

0825 PM     TSTM WND DMG     MISSOURI VALLEY         41.56N 95.90W
08/03/2004                   HARRISON           IA   TRAINED SPOTTER

            LARGE TREE LIMBS BLOWN DOWN. WIND SPEEDS ESTIMATED 60
            MPH.

0846 PM     FUNNEL CLOUD     7 SE HENDERSON          41.07N 95.34W
08/03/2004                   MONTGOMERY         IA   PUBLIC

0850 PM     TSTM WND DMG     1 W RED OAK             41.01N 95.24W
08/03/2004                   MONTGOMERY         IA   LAW ENFORCEMENT

            LARGE TREES DOWN

0930 PM     TSTM WND GST     1 W RED OAK             41.01N 95.24W
08/03/2004  60 MPH           MONTGOMERY         IA   AMATEUR RADIO

&&

BG

The radar

The Omaha radar (KOAX), 130 km away, was scanning. The volume nearest the first event began at 03:07 UTC.

Open the radar archive at this moment

Event by event

1 thunderstorm wind. Local standard time, as filed.

Thunderstorm Wind, Page

When: August 3, 9:07 PM CST
Where: Page County, Clarinda
Measured: 60 kt (69 mph) estimated gust
Reported by: LAW ENFORCEMENT
Coordinates: 40.733, -95.033

Thunderstorm wind gusts estimated at 70 mph downed several trees in town.

What these are

Thunderstorm Wind: Winds from a thunderstorm of 50 knots (58 mph) or more, or lower winds that caused damage or casualties. Measured gusts are marked MG, estimated EG.

After NWS Directive 10-1605, the rules offices file Storm Data by.

The same day elsewhere

Every storm in Iowa in 2004 Every state in 2004 This day in weather history Warnings in Iowa, August 2004

Sources

NOAA National Centers for Environmental Information, Storm Events Database, compiled from the National Weather Service’s monthly Storm Data. Complete through 2026-06; NCEI adds each month about 75 days after it ends and revises past years a few times a year. Rebuilt 2026-09-24. Each event’s entry at NCEI: 5422127.