Alert archive / Iowa / Wind Advisories in 2018

Wind Advisory 3, NWS La Crosse, WI

April 14, 2018Grant County, Wisconsin; 4 counties in Iowa

NWS La Crosse, WI issued this wind advisory at Apr 14, 2018, 2:56 AM CDT for Grant County, Wisconsin; 4 counties in Iowa. It was in force for 10 hr.

The area

The counties it named.

The facts

Issued
Apr 14, 2018, 2:56 AM CDT (07:56 UTC)
Expired
Apr 14, 2018, 1:00 PM CDT
In force
10 hr
Issued by
NWS La Crosse, WI

Counties Chickasaw County, IA, Clayton County, IA, Fayette County, IA, Floyd County, IA, Grant County, WI

The radar

The La Crosse radar (KARX), 110 km from the middle of the area, began a volume at 07:59 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

Davenport, (KDVN), launched 00:00Z, 7.9 hours before the alert went out and 182 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, Davenport, at 00:00Z on 2018-04-14Temperature 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, Davenport, at 00:00Z on 2018-04-14The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 524 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
834 m above ground
0-6 km bulk shear
52 kt
0-1 km storm-relative helicity
524 m²/s²
0-3 km storm-relative helicity
713 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.1

Open this sounding in Storm Lab

The text

As transmitted.

486 
WWUS73 KARX 140756
NPWARX

URGENT - WEATHER MESSAGE
National Weather Service La Crosse WI
256 AM CDT Sat Apr 14 2018

...Strong Northeast Winds Across the Area Through This Morning...

.Northeast to east winds of 15 to 25 mph gusting 30 to 40 mph were
common across the area early this morning. In some of the more
open areas, winds were 30 to 35 mph gusting to around 45 mph. 
These winds are going to continue through this morning, and may 
strengthen a bit before beginning to diminish this afternoon.

These winds can blow loose yard items around, break weak branches
off trees and create control problems for those driving light-
weight or high-profile vehicles. 

IAZ018-019-029-030-WIZ061-141600-
/O.NEW.KARX.WI.Y.0003.180414T0800Z-180414T1800Z/
Floyd-Chickasaw-Fayette-Clayton-Grant-
Including the cities of Charles City, New Hampton, Oelwein, 
Elkader, and Platteville
256 AM CDT Sat Apr 14 2018

...WIND ADVISORY IN EFFECT UNTIL 1 PM CDT THIS AFTERNOON...

The National Weather Service in La Crosse has issued a Wind
Advisory, which is in effect until 1 PM CDT this afternoon. 

* TIMING...3 am to noon today. 

* WINDS...northeast to east winds 25 to 35 mph gusting 35 to 
  around 45 mph. 

* IMPACTS...Loose objects may blow around, weak branches may break
  from trees, driving light-weight or high-profile vehicles can 
  be difficult. 

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A Wind Advisory means that sustained winds of 30 mph or wind
gusts of 45 mph or stronger are expected. Winds this strong can
make driving difficult...especially for high profile vehicles.
Use extra caution.

&&

$$
RRS
1 follow-up statement
678 
WWUS73 KARX 141142
NPWARX

URGENT - WEATHER MESSAGE
National Weather Service La Crosse WI
642 AM CDT Sat Apr 14 2018

...Strong Northeast Winds Across the Area Through This Morning...

.Northeast to east winds of 20 to 30 mph gusting 30 to 40 mph 
were common across the area early this morning. In some of the 
more open areas, winds were 30 to 35 mph gusting to around 45 mph.
These winds are going to continue through this morning, and may 
strengthen a bit before beginning to diminish this afternoon.

These winds can blow loose yard items around, break weak branches
off trees and create control problems for those driving light-
weight or high-profile vehicles.

IAZ018-019-029-030-WIZ061-141800-
/O.CON.KARX.WI.Y.0003.000000T0000Z-180414T1800Z/
Floyd-Chickasaw-Fayette-Clayton-Grant-
Including the cities of Charles City, New Hampton, Oelwein, 
Elkader, and Platteville
642 AM CDT Sat Apr 14 2018

...WIND ADVISORY REMAINS IN EFFECT UNTIL 1 PM CDT THIS
AFTERNOON...

* TIMING...Until 1 pm this afternoon.

* WINDS...northeast to east winds 25 to 35 mph gusting 35 to 
  around 45 mph. 

* IMPACTS...Loose objects may blow around, weak branches may break
  from trees and driving light-weight or high-profile vehicles 
  can be difficult. 

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A Wind Advisory means that sustained winds of 30 mph or wind
gusts of 45 mph or stronger are expected. Winds this strong can
make driving difficult...especially for high profile vehicles.
Use extra caution.

&&

$$
RRS

The office that day

Everything else NWS La Crosse, WI issued on the same UTC day.

IssuedProductOfficeCountiesLasted
Apr 14, 7:21 AM CDTRiver Flood WarningARXRichland, Vernon69 hr
Apr 14, 7:21 AM CDTRiver Flood WarningARXVernon69 hr
Apr 14, 1:18 PM CDTRiver Flood WarningARXCrawford69 hr
Apr 13, 8:00 PM CDTSevere Thunderstorm WarningARXFloyd, Mitchell18 min
Apr 13, 8:25 PM CDTSevere Thunderstorm WarningARXChickasaw35 min
Apr 13, 8:46 PM CDTSevere Thunderstorm WarningARXHoward29 min

Nearby

Wind Advisories in Iowa, 2018Wind Advisories in Wisconsin, 2018Every wind advisory in 2018

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.