Alert archive / Iowa / High Wind Warnings in 2007

High Wind Warning 3, NWS Des Moines, IA

September 30, 200714 counties in Iowa

NWS Des Moines, IA issued this high wind warning at Sep 30, 2007, 4:43 PM CDT for 14 counties in Iowa. It was in force for 3 hr. No storm report in the archive falls inside the area while it was in force.

The area

The counties it named.

The facts

Issued
Sep 30, 2007, 4:43 PM CDT (21:43 UTC)
Expired
Sep 30, 2007, 7:15 PM CDT
In force
3 hr
Issued by
NWS Des Moines, IA

Counties Adair County, IA, Adams County, IA, Audubon County, IA, Carroll County, IA, Cass County, IA, Clarke County, IA, Crawford County, IA, Decatur County, IA, Greene County, IA, Guthrie County, IA, Madison County, IA, Ringgold County, IA, Taylor County, IA, Union County, IA

The radar

The Des Moines radar (KDMX), 77 km from the middle of the area, began a volume at 21:45 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, 9.7 hours before the alert went out and 157 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 2007-09-30Temperature 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°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Omaha, NE at 12:00Z on 2007-09-30The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 450 square meters per square second.1939587897Sfc1 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
1296 m above ground
0-6 km bulk shear
54 kt
0-1 km storm-relative helicity
450 m²/s²
0-3 km storm-relative helicity
472 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.

000 
WWUS73 KDMX 302143
NPWDMX

URGENT - WEATHER MESSAGE
NATIONAL WEATHER SERVICE DES MOINES IA
443 PM CDT SUN SEP 30 2007

...STRONG NON-THUNDERSTORM WINDS ARE HEADING FOR SOUTHWEST IOWA...

.A STRONG SURFACE LOW OVER THE IOWA/NEBRASKA BORDER HAS CAUSED
WINDS TO INCREASE SUBSTANTIALLY. THE POTENTIAL FOR DAMAGING WIND
GUSTS IN THE ABSENCE OF THUNDERSTORMS HAS ALSO INCREASED. AS A
RESULT A HIGH WIND WARNING HAS BEEN ISSUED.

IAZ044>046-057-058-070>072-081>083-092>094-010100-
/O.NEW.KDMX.HW.W.0003.070930T2143Z-071001T0100Z/
CRAWFORD-CARROLL-GREENE-AUDUBON-GUTHRIE-CASS-ADAIR-MADISON-ADAMS-
UNION-CLARKE-TAYLOR-RINGGOLD-DECATUR-
INCLUDING THE CITIES OF...DENISON...CARROLL...JEFFERSON...
AUDUBON...GUTHRIE CENTER...ATLANTIC...GREENFIELD...WINTERSET...
CORNING...CRESTON...OSCEOLA...BEDFORD...MOUNT AYR...LEON
443 PM CDT SUN SEP 30 2007

...HIGH WIND WARNING IN EFFECT UNTIL 8 PM CDT THIS EVENING...

THE NATIONAL WEATHER SERVICE IN DES MOINES HAS ISSUED A HIGH WIND
WARNING...WHICH IS IN EFFECT UNTIL 8 PM CDT THIS EVENING. 

A STRONG SURFACE LOW HAS DEVELOPED OVER THE IOWA/NEBRASKA BORDER.
SUSTAINED WIND SPEEDS OF 36 MPH WITH GUSTS IN EXCESS OF 50 MPH
HAVE BEEN REPORTED IN SOUTHEAST NEBRASKA. THESE WIND SPEEDS WILL
MAKE THEIR WAY INTO SOUTHWEST IOWA. HIGH WINDS WILL LIKELY REMAIN
IN THE AREA UNTIL THE LOW PULLS OUT DURING THE EARLY EVENING.

A HIGH WIND WARNING MEANS A HAZARDOUS HIGH WIND EVENT IS EXPECTED
OR OCCURRING. SUSTAINED WIND SPEEDS OF AT LEAST 40 MPH OR GUSTS
OF 58 MPH OR MORE CAN LEAD TO PROPERTY DAMAGE.

$$

FAB
1 follow-up statement
000 
WWUS73 KDMX 010015
NPWDMX

URGENT - WEATHER MESSAGE
NATIONAL WEATHER SERVICE DES MOINES IA
715 PM CDT SUN SEP 30 2007

.THE STRONG LOW PRESSURE SYSTEM RESPONSIBLE FOR HIGH WINDS IN
SOUTHEAST NEBRASKA AND FAR SOUTHWEST IOWA IS MOVING OFF AND THE
WINDS ARE DIMINISHING TO BELOW WARNING CRITERIA.

IAZ044>046-057-058-070>072-081>083-092>094-010115-
/O.CAN.KDMX.HW.W.0003.000000T0000Z-071001T0100Z/
CRAWFORD-CARROLL-GREENE-AUDUBON-GUTHRIE-CASS-ADAIR-MADISON-ADAMS-
UNION-CLARKE-TAYLOR-RINGGOLD-DECATUR-
INCLUDING THE CITIES OF...DENISON...CARROLL...JEFFERSON...
AUDUBON...GUTHRIE CENTER...ATLANTIC...GREENFIELD...WINTERSET...
CORNING...CRESTON...OSCEOLA...BEDFORD...MOUNT AYR...LEON
715 PM CDT SUN SEP 30 2007

...HIGH WIND WARNING IS CANCELLED...

THE NATIONAL WEATHER SERVICE IN DES MOINES HAS CANCELED THE HIGH
WIND WARNING. 

WIND SPEEDS OVER THE WARNING AREA ARE BETWEEN 25 AND 35 MPH WHICH
IS BELOW WARNING CRITERIA. THE LOW PRESSURE SYSTEM RESPONSIBLE FOR
THE STRONG WIND EARLIER IS LIFTING OFF TO THE NORTHEAST AND WIND
SPEEDS ARE NO LONGER MEETING HIGH WIND CRITERIA. AS A RESULT THE
HIGH WIND WARNING IS CANCELED.

$$

FAB

The office that day

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

IssuedProductOfficeCountiesLasted
Sep 30, 4:29 PM CDTSevere Thunderstorm WarningDMXRinggold31 min
Sep 30, 4:38 PM CDTSevere Thunderstorm WarningDMXUnion27 min
Sep 30, 4:49 PM CDTSevere Thunderstorm WarningDMXClarke, Madison, Warren56 min
Sep 30, 5:21 PM CDTSevere Thunderstorm WarningDMXClarke, Lucas24 min
Sep 30, 5:23 PM CDTTornado WarningDMXClarke, Lucas24 min
Sep 30, 5:25 PM CDTSevere Thunderstorm WarningDMXSac50 min
Sep 30, 5:33 PM CDTTornado WarningDMXMarion, Warren42 min
Sep 30, 6:03 PM CDTSevere Thunderstorm WarningDMXJasper57 min
Sep 30, 6:03 PM CDTTornado WarningDMXSac15 min
Sep 30, 6:17 PM CDTSevere Thunderstorm WarningDMXCalhoun, Pocahontas, Sac43 min
Sep 30, 6:18 PM CDTSevere Thunderstorm WarningDMXMahaska, Marion, Poweshiek42 min
Sep 30, 6:21 PM CDTTornado WarningDMXCalhoun, Pocahontas, Sac24 min
Sep 30, 6:21 PM CDTTornado WarningDMXJasper, Mahaska, Marion, Poweshiek39 min
Sep 30, 6:37 PM CDTTornado WarningDMXPoweshiek38 min
Sep 30, 6:47 PM CDTTornado WarningDMXCalhoun, Pocahontas15 min
Sep 30, 6:54 PM CDTTornado WarningDMXJasper, Mahaska, Marion, Poweshiek26 min

Nearby

High Wind Warnings in Iowa, 2007Every high wind warning in 2007

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.