Alert archive / Iowa / Wind Advisories in 2012

Wind Advisory 22, NWS Sioux Falls, SD

May 23, 20125 counties in Iowa

NWS Sioux Falls, SD issued this wind advisory at May 23, 2012, 10:24 AM CDT for 5 counties in Iowa. It was in force for 6 hr.

The area

The counties it named.

The facts

Issued
May 23, 2012, 10:24 AM CDT (15:24 UTC)
Expired
May 23, 2012, 3:54 PM CDT
In force
6 hr
Issued by
NWS Sioux Falls, SD

Counties Buena Vista County, IA, Cherokee County, IA, Clay County, IA, Dickinson County, IA, Ida County, IA

The radar

The Sioux Falls radar (KFSD), 140 km from the middle of the area, began a volume at 15:25 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, 3.4 hours before the alert went out and 192 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 2012-05-23Temperature 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 2012-05-23The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 271 square meters per square second.19395878Sfc1 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
1627 m above ground
0-6 km bulk shear
19 kt
0-1 km storm-relative helicity
271 m²/s²
0-3 km storm-relative helicity
363 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.1

Open this sounding in Storm Lab

The text

As transmitted, in the capitals the NWS used until 2016.

367 
WWUS73 KFSD 231524
NPWFSD

URGENT - WEATHER MESSAGE
NATIONAL WEATHER SERVICE SIOUX FALLS SD
1024 AM CDT WED MAY 23 2012

.STRONG SOUTHERLY WINDS ARE EXPECTED TO CONTINUE ACROSS NORTHWEST
IOWA TODAY AHEAD OF A COLD FRONT APPROACHING FROM THE WEST. THE
STRONGEST WINDS ARE EXPECTED IN THE LATE MORNING INTO THE EARLY
AFTERNOON...WHERE WIND GUSTS COULD APPROACH 45 MPH. 

IAZ003-014-021-022-032-232100-
/O.NEW.KFSD.WI.Y.0022.120523T1524Z-120523T2100Z/
DICKINSON-CLAY-CHEROKEE-BUENA VISTA-IDA-
INCLUDING THE CITIES OF...SPIRIT LAKE...MILFORD...ARNOLDS PARK...
SPENCER...CHEROKEE...STORM LAKE...IDA GROVE...HOLSTEIN...
BATTLE CREEK
1024 AM CDT WED MAY 23 2012

...WIND ADVISORY IN EFFECT UNTIL 4 PM CDT THIS AFTERNOON...

THE NATIONAL WEATHER SERVICE IN SIOUX FALLS HAS ISSUED A WIND
ADVISORY...WHICH IS IN EFFECT UNTIL 4 PM CDT THIS AFTERNOON. 

* TIMING...SOUTH WINDS WILL REMAIN STRONG THROUGH EARLY AFTERNOON
  AND WILL SLOWLY DECREASE LATE THIS AFTERNOON AS A COLD FRONT
  APPROACHES FROM THE WEST. 

* WEATHER CONDITIONS...SOUTH WINDS OF 25 TO 35 MPH WITH GUSTS NEAR
  45 MPH CAN BE EXPECTED THROUGH LATE THIS AFTERNOON. 

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A WIND ADVISORY IS ISSUED WHEN SUSTAINED WINDS ARE FORECAST TO BE
31 TO 39 MPH OR GUSTS WILL RANGE BETWEEN 46 AND 57 MPH.  WINDS OF
THESE MAGNITUDES MAY CAUSE MINOR PROPERTY DAMAGE WITHOUT EXTRA
PRECAUTIONS. MOTORISTS IN HIGH PROFILE VEHICLES SHOULD USE
CAUTION UNTIL THE WINDS SUBSIDE.

&&

$$

BT
1 follow-up statement
019 
WWUS73 KFSD 232054
NPWFSD

URGENT - WEATHER MESSAGE
NATIONAL WEATHER SERVICE SIOUX FALLS SD
354 PM CDT WED MAY 23 2012

IAZ003-014-021-022-032-232200-
/O.CAN.KFSD.WI.Y.0022.000000T0000Z-120523T2100Z/
DICKINSON-CLAY-CHEROKEE-BUENA VISTA-IDA-
INCLUDING THE CITIES OF...SPIRIT LAKE...MILFORD...ARNOLDS PARK...
SPENCER...CHEROKEE...STORM LAKE...IDA GROVE...HOLSTEIN...
BATTLE CREEK
354 PM CDT WED MAY 23 2012

...WIND ADVISORY IS CANCELLED...

THE NATIONAL WEATHER SERVICE IN SIOUX FALLS HAS CANCELLED THE
WIND ADVISORY. 

THE GUSTY SOUTH WINDS WILL CONTINUE TO DECREASE THROUGH THE EARLY
EVENING HOURS.

$$

The office that day

Everything else NWS Sioux Falls, SD issued on the same UTC day.

IssuedProductOfficeCountiesLasted
May 23, 3:50 AM CDTFlash Flood WatchFSDBuena Vista, Cherokee, Clay, Dickinson, Ida, Lyon and 5 more29 hr

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.