Alert archive / Wisconsin / Special Weather Statements in 2015

Special Weather Statement, NWS La Crosse, WI

August 2, 2015Clark County, Wisconsin

NWS La Crosse, WI issued this special weather statement at Aug 2, 2015, 7:27 AM CDT for Clark County, Wisconsin. It was in force for 33 min. No storm report in the archive falls inside the area while it was in force.

The area

The outline as issued.

The facts

Issued: Aug 2, 2015, 7:27 AM CDT (12:27 UTC)
Expired: Aug 2, 2015, 8:00 AM CDT
In force: 33 min
Issued by: NWS La Crosse, WI

County Clark County, WI

The radar

The La Crosse radar (KARX), 130 km from the middle of the area, began a volume at 12:31 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

Green Bay/Straub, WI (KGRB), launched 12:00Z, 0.5 hours before the alert went out and 190 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-p

Temperature in red, dew point in green, the mixed-layer parcel dashed.

Hodograph

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: 1667 J/kg
Mixed-layer CIN: -90 J/kg
Mixed-layer LCL: 1134 m above ground
0-6 km bulk shear: 52 kt
0-1 km storm-relative helicity: 166 m²/s²
0-3 km storm-relative helicity: 291 m²/s²
Significant tornado parameter: 1.2
Supercell composite: 10.4

Open this sounding in Storm Lab

The text

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

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What forecasters said that day

The local office's own words before this special weather statement went out, as it sent them, from the Iowa Environmental Mesonet's archive of National Weather Service text.

NWS La Crosse, WI wrote its last area forecast discussion before this special weather statement went out at Aug 2, 6:12 AM CDT, 1 hour 15 minutes earlier.

Area forecast discussion, Aug 2, 6:12 AM CDT, 1 hour 15 minutes before

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Hazardous weather outlook, Aug 2, 3:51 AM CDT, 3 hours 36 minutes before

HAZARDOUS WEATHER OUTLOOK
NATIONAL WEATHER SERVICE LA CROSSE WI
351 AM CDT SUN AUG 2 2015

IAZ011-030-MNZ088-096-WIZ017-029-032>034-041>044-053>055-061-
031100-
ALLAMAKEE-CLAYTON-WINONA-HOUSTON-TAYLOR-CLARK-BUFFALO-TREMPEALEAU-
JACKSON-LA CROSSE-MONROE-JUNEAU-ADAMS-VERNON-CRAWFORD-RICHLAND-
GRANT-
351 AM CDT SUN AUG 2 2015

THIS HAZARDOUS WEATHER OUTLOOK IS FOR PARTS OF NORTHEAST IOWA...
SOUTHEAST MINNESOTA...AND SOUTHWEST INTO CENTRAL WISCONSIN.

.DAY ONE...TODAY AND TONIGHT

ISOLATED THUNDERSTORMS ARE POSSIBLE THIS MORNING. WHILE THE RISK
AND COVERAGE SHOULD REMAIN LOW...A STRONGER STORM COULD PRODUCE
HAIL AND LIGHTNING.

THERE IS A CHANCE ADDITIONAL STRONG TO SEVERE THUNDERSTORMS COULD
DEVELOP THIS AFTERNOON...AFTER 3PM...MAINLY ACROSS WISCONSIN.
THERE IS A HIGHER RISK OF SEVERE WEATHER EAST OF THE AREA...BUT
IF STRONGER STORMS DEVELOP BACK TO THE WEST...DAMAGING WIND OR
HAIL COULD BE SEEN. THE STORM THREAT SHOULD QUICKLY END THIS
EVENING.

.DAYS TWO THROUGH SEVEN...MONDAY THROUGH SATURDAY

THERE IS A CHANCE FOR THUNDERSTORMS FROM WEDNESDAY NIGHT INTO NEXT
WEEKEND...BUT IT IS TOO EARLY TO DISCERN ANY SEVERE WEATHER
THREAT.

.SPOTTER INFORMATION STATEMENT...

A FEW SPOTTER GROUPS MIGHT BE NEEDED...MAINLY IN WISCONSIN LATER
THIS AFTERNOON.

.EMERGENCY MANAGEMENT COORDINATION...

NO WEBINAR IS SCHEDULED.

IAZ008>010-018-019-029-MNZ079-086-087-094-095-031100-
MITCHELL-HOWARD-WINNESHIEK-FLOYD-CHICKASAW-FAYETTE-WABASHA-DODGE-
OLMSTED-MOWER-FILLMORE-
351 AM CDT SUN AUG 2 2015

THIS HAZARDOUS WEATHER OUTLOOK IS FOR PARTS OF NORTHEAST IOWA AND
SOUTHEAST MINNESOTA.

.DAY ONE...TODAY AND TONIGHT

ISOLATED THUNDERSTORMS ARE POSSIBLE THIS MORNING. WHILE THE RISK
AND COVERAGE SHOULD REMAIN LOW...A STRONGER STORM COULD PRODUCE
HAIL AND LIGHTNING.

THERE IS A CHANCE ADDITIONAL THUNDERSTORMS COULD DEVELOP THIS
AFTERNOON...BUT THE RISK OF ANY SEVERE WEATHER IS HIGHEST EAST OF
THE AREA...MAINLY IN WISCONSIN. IF A STRONGER STORM DOES
DEVELOP...HAIL AND GUSTY WINDS WOULD BE THE MAIN THREAT.

.DAYS TWO THROUGH SEVEN...MONDAY THROUGH SATURDAY

THERE IS A CHANCE FOR THUNDERSTORMS FROM WEDNESDAY NIGHT INTO NEXT
WEEKEND...BUT IT IS TOO EARLY TO DISCERN ANY SEVERE WEATHER
THREAT.

.SPOTTER INFORMATION STATEMENT...

SPOTTER ACTIVATION IS NOT ANTICIPATED.

.EMERGENCY MANAGEMENT COORDINATION...

NO WEBINAR IS SCHEDULED.

SHEA

In the hours before

Local storm report, Aug 2, 3:15 AM CDT, 4 hours 12 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE LA CROSSE WI
315 AM CDT SUN AUG 02 2015

..TIME...   ...EVENT...      ...CITY LOCATION...     ...LAT.LON...
..DATE...   ....MAG....      ..COUNTY LOCATION..ST.. ...SOURCE....
            ..REMARKS..

1240 AM     HAIL             7 S RIB LAKE            45.22N 90.20W
08/02/2015  E1.25 INCH       TAYLOR             WI   PUBLIC

            PICTURE AND REPORT RECEIVED VIA SOCIAL MEDIA

&&

SHEA

Special weather statement, Aug 2, 4:49 AM CDT, 2 hours 38 minutes before

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE LA CROSSE WI
449 AM CDT SUN AUG 2 2015

MNZ095-021015-
FILLMORE-
449 AM CDT SUN AUG 2 2015

...A STRONG THUNDERSTORM WILL AFFECT SOUTHEASTERN FILLMORE COUNTY...

AT 449 AM CDT...A STRONG THUNDERSTORM WAS NEAR PRESTON...MOVING EAST
AT 40 MPH.

WINDS IN EXCESS OF 30 MPH AND PEA SIZE HAIL ARE POSSIBLE WITH THIS
STORM.

LOCATIONS IMPACTED INCLUDE...
PRESTON...HARMONY...MABEL...CANTON...BRISTOL...NEWBURG...AMHERST...
YORK...CARIMONA...LENORA...HUTTON...TAWNEY...FORESTVILLE STATE
PARK...GREENLEAFTON...GRANGER AND HENRYTOWN.

FREQUENT CLOUD TO GROUND LIGHTNING IS OCCURRING WITH THIS STORM.
LIGHTNING CAN STRIKE 15 MILES AWAY FROM A THUNDERSTORM. SEEK A SAFE
SHELTER INSIDE A BUILDING OR VEHICLE.

LAT...LON 4369 9222 4362 9173 4350 9173 4350 9223
      4352 9230
TIME...MOT...LOC 0949Z 287DEG 33KT 4359 9216

DAS

Special weather statement, Aug 2, 7:27 AM CDT, 0 minutes before

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The office that day

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

Issued	Product	Office	Counties	Lasted
Aug 2, 12:23 AM CDT	Special Weather Statement	ARX	Taylor	37 min
Aug 2, 12:30 AM CDT	Severe Thunderstorm Warning	ARX	Taylor	30 min
Aug 2, 4:49 AM CDT	Special Weather Statement	ARX	Fillmore	26 min

Nearby

Special Weather Statements in Wisconsin, 2015 Every 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; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.