Alert archive / Wisconsin / Special Weather Statements in 2015

Special Weather Statement, NWS La Crosse, WI

July 18, 2015Adams County, Juneau County, Wisconsin

NWS La Crosse, WI issued this special weather statement at Jul 18, 2015, 3:21 AM CDT for Adams County, Juneau County, Wisconsin. It was in force for 114 min. 1 report came from inside the area while it was in force.

The area

The outline as issued, with what was reported inside it.

The facts

Issued
Jul 18, 2015, 3:21 AM CDT (08:21 UTC)
Expired
Jul 18, 2015, 5:15 AM CDT
In force
114 min
Issued by
NWS La Crosse, WI

Counties Adams County, WI, Juneau County, WI

The radar

The La Crosse radar (KARX), 94 km from the middle of the area, began a volume at 08:20 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.

What was reported inside it

TimeReportWhereRemark
Jul 18, 4:03 AM CDTTSTM WND GST 49Volk Field, WI

Local storm reports filed while the alert was in force, from inside its polygon or its counties.

The nearest sounding before it

Green Bay/Straub, WI (KGRB), launched 00:00Z, 8.4 hours before the alert went out and 167 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, Green Bay/Straub, WI at 00:00Z on 2015-07-18Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 752 joules per kilogram.LCLLFCEL10008507005003002001001 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, Green Bay/Straub, WI at 00:00Z on 2015-07-18The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 50 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
752 J/kg
Mixed-layer CIN
-29 J/kg
Mixed-layer LCL
1510 m above ground
0-6 km bulk shear
30 kt
0-1 km storm-relative helicity
50 m²/s²
0-3 km storm-relative helicity
80 m²/s²
Significant tornado parameter
0.1
Supercell composite
2.2

Open this sounding in Storm Lab

The text

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

677 
WWUS83 KARX 180821
SPSARX

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE LA CROSSE WI
321 AM CDT SAT JUL 18 2015
 
WIZ043-044-181015-
JUNEAU-ADAMS-
321 AM CDT SAT JUL 18 2015

...A LINE OF STRONG TO SEVERE THUNDERSTORMS WILL AFFECT JUNEAU AND 
ADAMS COUNTIES BY 515 AM...

AT 319 AM CDT...A LINE OF STRONG TO SEVERE THUNDERSTORMS EXTENDED  
FROM 6 MILES SOUTH OF HATFIELD TO 6 MILES WEST OF NEW ALBIN...AND 
MOVING EAST AT 40 MPH.

WIND GUSTS OF 45 TO 60 MPH ARE POSSIBLE WITH THESE STORMS. THESE 
WIND GUSTS COULD CAUSE DAMAGE. IF THE STORMS HOLD TOGETHER SEVERE 
THUNDERSTORM WARNINGS WILL BE ISSUED.

LOCATIONS IMPACTED INCLUDE... 

MAUSTON...FRIENDSHIP...NEW LISBON...ADAMS...ELROY...NECEDAH...NEW 
ROME...LEMONWEIR...STRONGS PRAIRIE...BIG FLATS...LINDINA...CAMP 
DOUGLAS AND LYNDON STATION.

BE CERTAIN TO MONITOR LOCAL RADIO AND TV STATIONS...AS WELL AS LOCAL 
CABLE TV OUTLETS...FOR ADDITIONAL INFORMATION AND POSSIBLE WARNINGS 
FROM THE NATIONAL WEATHER SERVICE.

LAT...LON 4364 9031 4425 9031 4425 8960 4364 8960
TIME...MOT...LOC 0819Z 271DEG 37KT 4433 9070 4352 9142 
$$

AJ

The office that day

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

IssuedProductOfficeCountiesLasted
Jul 18, 1:23 AM CDTSevere Thunderstorm WarningARXBuffalo67 min
Jul 18, 1:36 AM CDTSpecial Weather StatementARXTrempealeau84 min
Jul 18, 2:06 AM CDTSevere Thunderstorm WarningARXBuffalo, Trempealeau54 min
Jul 18, 2:24 AM CDTSpecial Weather StatementARXClark, Jackson, La Crosse, Monroe, Taylor66 min
Jul 18, 2:32 AM CDTSevere Thunderstorm WarningARXClark, Taylor73 min
Jul 18, 2:43 AM CDTSevere Thunderstorm WarningARXJackson, La Crosse, Monroe, Trempealeau77 min
Jul 18, 3:09 AM CDTSpecial Weather StatementARXVernon66 min
Jul 18, 3:36 AM CDTAreal Flood AdvisoryARXLa Crosse114 min
Jul 18, 3:37 AM CDTSevere Thunderstorm WarningARXAdams, Juneau68 min
Jul 18, 4:02 AM CDTSpecial Weather StatementARXCrawford, Grant, Richland73 min
Jul 18, 10:38 AM CDTSpecial Weather StatementARXGrant37 min
Jul 18, 11:26 AM CDTSpecial Weather StatementARXGrant49 min
Jul 18, 12:03 PM CDTTornado WarningARXGrant27 min
Jul 18, 12:31 PM CDTTornado WarningARXGrant44 min
Jul 18, 1:14 PM CDTTornado WarningARXGrant16 min
Jul 18, 2:14 AM CDTSpecial Weather StatementARXMitchell61 min
Jul 18, 2:57 AM CDTSevere Thunderstorm WarningARXHoward, Mitchell27 min
Jul 18, 12:45 AM CDTSpecial Weather StatementARXDodge, Olmsted, Wabasha2 hr
Jul 18, 1:08 AM CDTSevere Thunderstorm WarningARXDodge52 min
Jul 18, 1:57 AM CDTTornado WarningARXWabasha22 min
Jul 18, 2:31 AM CDTAreal Flood AdvisoryARXMower119 min

Nearby

Special Weather Statements in Wisconsin, 2015Every special weather statement 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; local storm reports from the same archive; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.