Alert archive / Iowa / Wind Advisories in 2015

Wind Advisory 3, NWS La Crosse, WI

April 21, 20157 counties in Iowa; 4 counties in Minnesota

NWS La Crosse, WI issued this wind advisory at Apr 21, 2015, 3:44 AM CDT for 7 counties in Iowa; 4 counties in Minnesota. It took effect at Apr 21, 2015, 12:00 PM CDT. It was in force for 6 hr.

The area

The counties it named.

The facts

Issued
Apr 21, 2015, 3:44 AM CDT (08:44 UTC)
In effect from
Apr 21, 2015, 12:00 PM CDT
Expired
Apr 21, 2015, 6:00 PM CDT
In force
6 hr
Issued by
NWS La Crosse, WI

Counties Chickasaw County, IA, Clayton County, IA, Fayette County, IA, Floyd County, IA, Howard County, IA, Mitchell County, IA, Winneshiek County, IA, Dodge County, MN, Fillmore County, MN, Mower County, MN, Olmsted County, MN

The radar

The La Crosse radar (KARX), 102 km from the middle of the area, began a volume at 08:43 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 00:00Z, 8.7 hours before the alert went out and 193 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 00:00Z on 2015-04-21Temperature 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 00:00Z on 2015-04-21The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 9 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
1197 m above ground
0-6 km bulk shear
12 kt
0-1 km storm-relative helicity
9 m²/s²
0-3 km storm-relative helicity
38 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.

554 
WWUS73 KARX 210844
NPWARX

URGENT - WEATHER MESSAGE
NATIONAL WEATHER SERVICE LA CROSSE WI
344 AM CDT TUE APR 21 2015

...STRONG NORTHWEST WINDS TODAY...

.NORTHWEST WINDS WILL INCREASE TO 25 TO 30 MPH WITH GUSTS OF 40
TO 45 MPH FOR THIS AFTERNOON. LOOK FOR THE WINDS TO SUBSIDE TO 20
TO 30 MPH LATE THIS AFTERNOON.

IAZ008>010-018-019-029-030-MNZ086-087-094-095-211645-
/O.NEW.KARX.WI.Y.0003.150421T1700Z-150421T2300Z/
MITCHELL-HOWARD-WINNESHIEK-FLOYD-CHICKASAW-FAYETTE-CLAYTON-DODGE-
OLMSTED-MOWER-FILLMORE-
INCLUDING THE CITIES OF...DECORAH...CHARLES CITY...OELWEIN...
ROCHESTER...AUSTIN
344 AM CDT TUE APR 21 2015

...WIND ADVISORY IN EFFECT FROM NOON TODAY TO 6 PM CDT THIS
EVENING...

THE NATIONAL WEATHER SERVICE IN LA CROSSE HAS ISSUED A WIND
ADVISORY...WHICH IS IN EFFECT FROM NOON TODAY TO 6 PM CDT THIS
EVENING. 

* NORTHWEST WINDS WILL INCREASE TO 25 TO 30 MPH BY EARLY THIS
  AFTERNOON. GUSTS OF 40 TO 45 MPH ARE EXPECTED. LOOK FOR THE
  WINDS TO SUBSIDE TO 20 TO 30 MPH LATE THIS AFTERNOON.

* STRONG WINDS CAN MAKE DRIVING DIFFICULT...ESPECIALLY FOR HIGH
  PROFILE VEHICLES.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A WIND ADVISORY MEANS THAT SUSTAINED WINDS OF 30 MPH OR HIGHER...
OR GUSTS OVER 45 MPH...ARE EXPECTED. USE EXTRA CAUTION IF YOU ARE
DRIVING A HIGH PROFILE VEHICLE. 

&&

$$

WETENKAMP
3 follow-up statements
525 
WWUS73 KARX 211514
NPWARX

URGENT - WEATHER MESSAGE
NATIONAL WEATHER SERVICE LA CROSSE WI
1014 AM CDT TUE APR 21 2015

...STRONG NORTHWEST WINDS TODAY...

.NORTHWEST WINDS WILL INCREASE TO 25 TO 30 MPH WITH GUSTS OF
40 TO 45 MPH FOR THIS AFTERNOON. STRONG GUSTS HAVE ALREADY BEEN
REPORTED THIS MORNING INCLUDING 41 MPH AT ROCHESTER...40 MPH AT
OELWEIN AND 39 MPH AT CHARLES CITY. LOOK FOR THE WINDS TO SUBSIDE
TO 15 TO 25 MPH THIS EVENING.

IAZ008>010-018-019-029-030-MNZ086-087-094-095-212300-
/O.CON.KARX.WI.Y.0003.150421T1700Z-150421T2300Z/
MITCHELL-HOWARD-WINNESHIEK-FLOYD-CHICKASAW-FAYETTE-CLAYTON-DODGE-
OLMSTED-MOWER-FILLMORE-
INCLUDING THE CITIES OF...DECORAH...CHARLES CITY...OELWEIN...
ROCHESTER...AUSTIN
1014 AM CDT TUE APR 21 2015

...WIND ADVISORY REMAINS IN EFFECT UNTIL 6 PM CDT THIS EVENING...

* NORTHWEST WINDS WILL INCREASE TO 25 TO 30 MPH BY EARLY THIS
  AFTERNOON. GUSTS OF 40 TO 45 MPH ARE EXPECTED. LOOK FOR THE
  WINDS TO SUBSIDE TO 15 TO 25 MPH THIS EVENING.

* STRONG WINDS CAN MAKE DRIVING DIFFICULT...ESPECIALLY FOR HIGH 
  PROFILE VEHICLES. 

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A WIND ADVISORY MEANS THAT SUSTAINED WINDS OF 30 MPH OR HIGHER...
OR GUSTS OVER 45 MPH...ARE EXPECTED. USE EXTRA CAUTION IF YOU ARE
DRIVING A HIGH PROFILE VEHICLE.

&&

$$

CC
872 
WWUS73 KARX 211954
NPWARX

URGENT - WEATHER MESSAGE
NATIONAL WEATHER SERVICE LA CROSSE WI
254 PM CDT TUE APR 21 2015

...STRONG NORTHWEST WINDS CONTINUE THIS AFTERNOON...

.NORTHWEST WINDS HAVE INCREASED THIS AFTERNOON. WINDS OF 33 MPH
HAVE BEEN REPORTED AT OELWEIN SO FAR THIS AFTERNOON. GUSTS
GREATER THAN 40 MPH HAVE ALSO BEEN REPORTED AT OELWEIN...DODGE
CENTER AND ROCHESTER. STRONG NORTHWEST WINDS FROM 25 TO 35 MPH
WILL CONTINUE THIS AFTERNOON BEFORE DECREASING THIS EVENING.

IAZ008>010-018-019-029-030-MNZ086-087-094-095-212300-
/O.CON.KARX.WI.Y.0003.000000T0000Z-150421T2300Z/
MITCHELL-HOWARD-WINNESHIEK-FLOYD-CHICKASAW-FAYETTE-CLAYTON-DODGE-
OLMSTED-MOWER-FILLMORE-
INCLUDING THE CITIES OF...DECORAH...CHARLES CITY...OELWEIN...
ROCHESTER...AUSTIN
254 PM CDT TUE APR 21 2015

...WIND ADVISORY REMAINS IN EFFECT UNTIL 6 PM CDT THIS EVENING...

* NORTHWEST WINDS WILL INCREASE TO 25 TO 30 MPH BY EARLY THIS 
  AFTERNOON. GUSTS OF 40 TO 45 MPH ARE EXPECTED. LOOK FOR THE 
  WINDS TO SUBSIDE TO 15 TO 25 MPH THIS EVENING. 

* STRONG WINDS CAN MAKE DRIVING DIFFICULT...ESPECIALLY FOR HIGH 
  PROFILE VEHICLES. 

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A WIND ADVISORY MEANS THAT SUSTAINED WINDS OF 30 MPH OR HIGHER...
OR GUSTS OVER 45 MPH...ARE EXPECTED. USE EXTRA CAUTION IF YOU ARE
DRIVING A HIGH PROFILE VEHICLE.

&&

$$
691 
WWUS73 KARX 212303
NPWARX

URGENT - WEATHER MESSAGE
NATIONAL WEATHER SERVICE LA CROSSE WI
603 PM CDT TUE APR 21 2015

...STRONG WINDS WILL QUICKLY DIMINISH THIS EVENING...

.THE STRONG WEST NORTHWEST WINDS WILL QUICKLY DIMINISH THIS
EVENING. SUSTAINED WINDS WILL DECREASE FROM 20 TO 30 MPH TO
10 TO 20 MPH BY 9 PM THIS EVENING. THE WIND GUSTS WILL DIMINISH
FROM NEAR 40 MPH TO 25 MPH DURING THE AFOREMENTIONED TIME. DUE TO
THIS...THE WIND ADVISORY HAS BEEN ALLOWED TO EXPIRE.

IAZ008>010-018-019-029-030-MNZ086-087-094-095-220015-
/O.EXP.KARX.WI.Y.0003.000000T0000Z-150421T2300Z/
MITCHELL-HOWARD-WINNESHIEK-FLOYD-CHICKASAW-FAYETTE-CLAYTON-DODGE-
OLMSTED-MOWER-FILLMORE-
INCLUDING THE CITIES OF...DECORAH...CHARLES CITY...OELWEIN...
ROCHESTER...AUSTIN
603 PM CDT TUE APR 21 2015

...WIND ADVISORY HAS EXPIRED...

THE STRONG WEST NORTHWEST WINDS WILL QUICKLY DIMINISH THIS
EVENING. SUSTAINED WINDS WILL DECREASE FROM 20 TO 30 MPH TO
10 TO 20 MPH BY 9 PM THIS EVENING. THE WIND GUSTS WILL DIMINISH
FROM NEAR 40 MPH TO 25 MPH DURING THE AFOREMENTIONED TIME.
DUE TO THIS...THE WIND ADVISORY HAS BEEN ALLOWED TO EXPIRE.

$$

BOYNE

Nearby

Wind Advisories in Iowa, 2015Wind Advisories in Minnesota, 2015Every wind advisory in 2015

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.