Alert archive / Iowa / Wind Advisories in 2012

Wind Advisory 8, NWS Des Moines, IA

April 13, 201211 counties in Iowa

NWS Des Moines, IA issued this wind advisory at Apr 13, 2012, 12:50 PM CDT for 11 counties in Iowa. It took effect at Apr 13, 2012, 1:00 PM CDT. It was in force for 5 hr.

The area

The counties it named.

The facts

Issued
Apr 13, 2012, 12:50 PM CDT (17:50 UTC)
In effect from
Apr 13, 2012, 1:00 PM CDT
Expired
Apr 13, 2012, 6:28 PM CDT
In force
5 hr
Issued by
NWS Des Moines, IA

Counties Bremer County, IA, Butler County, IA, Cerro Gordo County, IA, Emmet County, IA, Franklin County, IA, Hancock County, IA, Kossuth County, IA, Palo Alto County, IA, Winnebago County, IA, Worth County, IA, Wright County, IA

The radar

The Des Moines radar (KDMX), 147 km from the middle of the area, began a volume at 17:47 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

Minneapolis, MN (KMPX), launched 12:00Z, 5.8 hours before the alert went out and 200 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, Minneapolis, MN at 12:00Z on 2012-04-13Temperature 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, Minneapolis, MN at 12:00Z on 2012-04-13The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 175 square meters per square second.193958Sfc1 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
2224 m above ground
0-6 km bulk shear
14 kt
0-1 km storm-relative helicity
175 m²/s²
0-3 km storm-relative helicity
245 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.

353 
WWUS73 KDMX 131750
NPWDMX

URGENT - WEATHER MESSAGE
NATIONAL WEATHER SERVICE DES MOINES IA
1250 PM CDT FRI APR 13 2012

...STRONG WINDS ACROSS NORTHERN IOWA THIS AFTERNOON...

.A TIGHT PRESSURE GRADIENT ACROSS NORTHERN IOWA WILL RESULT IN
CONTINUED STRONG SOUTHEASTERLY WINDS ACROSS NORTHERN IOWA THIS
AFTERNOON. WINDS SHOULD TAPER OFF THIS EVENING.

IAZ004>007-015>017-025>028-140000-
/O.NEW.KDMX.WI.Y.0008.120413T1800Z-120414T0000Z/
EMMET-KOSSUTH-WINNEBAGO-WORTH-PALO ALTO-HANCOCK-CERRO GORDO-
WRIGHT-FRANKLIN-BUTLER-BREMER-
INCLUDING THE CITIES OF...ESTHERVILLE...ALGONA...FOREST CITY...
NORTHWOOD...EMMETSBURG...GARNER...MASON CITY...CLARION...
HAMPTON...ALLISON...WAVERLY
1250 PM CDT FRI APR 13 2012

...WIND ADVISORY IN EFFECT UNTIL 7 PM CDT THIS EVENING...

THE NATIONAL WEATHER SERVICE IN DES MOINES HAS ISSUED A WIND
ADVISORY...WHICH IS IN EFFECT UNTIL 7 PM CDT THIS EVENING.

* TIMING...THE STRONG WINDS WILL CONTINUE THROUGH THIS AFTERNOON
  AND DIMINISH THIS EVENING.

* WINDS...EXPECT SUSTAINED SOUTHEAST WINDS OF 30 TO 35 MPH WITH
  GUSTS APPROACHING 45 MPH.

* IMPACTS...STRONG WINDS WILL MAKE TRAVEL DIFFICULT FOR HIGH
  PROFILE VEHICLES...ESPECIALLY ON EAST WEST ORIENTED ROADS. ANY
  SMALL LOOSE OBJECTS MAY BE BLOWN AROUND IF NOT STORED OR TIED
  DOWN.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A WIND ADVISORY MEANS THAT WINDS OF 30 MPH ARE EXPECTED. WINDS
THIS STRONG CAN MAKE DRIVING DIFFICULT...ESPECIALLY FOR HIGH
PROFILE VEHICLES. USE EXTRA CAUTION.

&&

$$

KS
1 follow-up statement
681 
WWUS73 KDMX 132328
NPWDMX

URGENT - WEATHER MESSAGE
NATIONAL WEATHER SERVICE DES MOINES IA
628 PM CDT FRI APR 13 2012

...WINDS OVER NORTHERN IOWA HAVE DIMINISHED...

.THE STRONGER WINDS THAT HAD EARLIER EXISTED HAVE DIMINISHED. THE
WIND ADVISORY HAS BEEN CANCELLED. 

IAZ004>007-015>017-025>028-140030-
/O.CAN.KDMX.WI.Y.0008.000000T0000Z-120414T0000Z/
EMMET-KOSSUTH-WINNEBAGO-WORTH-PALO ALTO-HANCOCK-CERRO GORDO-
WRIGHT-FRANKLIN-BUTLER-BREMER-
INCLUDING THE CITIES OF...ESTHERVILLE...ALGONA...FOREST CITY...
NORTHWOOD...EMMETSBURG...GARNER...MASON CITY...CLARION...
HAMPTON...ALLISON...WAVERLY
628 PM CDT FRI APR 13 2012

...WIND ADVISORY IS CANCELLED...

THE NATIONAL WEATHER SERVICE IN DES MOINES HAS CANCELLED THE WIND
ADVISORY. 

SOUTHEAST WINDS WILL CONTINUE INTO THE EVENING HOURS AT 15 TO 25
MPH AT TIMES...BUT STRONGER WINDS ARE NO LONGER EXPECTED. 

$$

REV

Nearby

Wind Advisories in Iowa, 2012Every wind advisory in 2012

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.