Alert archive / Wisconsin / Special Weather Statements in 2016

Special Weather Statement, NWS La Crosse, WI

July 17, 20164 counties in Wisconsin; 4 counties in Iowa

NWS La Crosse, WI issued this special weather statement at Jul 17, 2016, 4:25 AM CDT for 4 counties in Wisconsin; 4 counties in Iowa. It was in force for 80 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: Jul 17, 2016, 4:25 AM CDT (09:25 UTC)
Expired: Jul 17, 2016, 5:45 AM CDT
In force: 80 min
Issued by: NWS La Crosse, WI

Counties Allamakee County, IA, Clayton County, IA, Fayette County, IA, Winneshiek County, IA, Crawford County, WI, Grant County, WI, Richland County, WI, Vernon County, WI

The radar

The La Crosse radar (KARX), 79 km from the middle of the area, began a volume at 09:25 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

Davenport, (KDVN), launched 00:00Z, 9.4 hours before the alert went out and 176 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: 0 J/kg
Mixed-layer CIN: No buoyant parcel
Mixed-layer LCL: 1263 m above ground
0-6 km bulk shear: 45 kt
0-1 km storm-relative helicity: 71 m²/s²
0-3 km storm-relative helicity: 182 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.0

Open this sounding in Storm Lab

The text

As transmitted.

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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 Jul 17, 3:34 AM CDT, 51 minutes earlier.

Area forecast discussion, Jul 17, 3:34 AM CDT, 51 minutes before

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Hazardous weather outlook, Jul 16, 3:20 PM CDT, 13 hours 5 minutes before

HAZARDOUS WEATHER OUTLOOK
NATIONAL WEATHER SERVICE LA CROSSE WI
320 PM CDT SAT JUL 16 2016

IAZ010-011-029-030-MNZ079-088-096-WIZ017-029-032>034-041>044-
053>055-061-171300-
WINNESHIEK-ALLAMAKEE-FAYETTE-CLAYTON-WABASHA-WINONA-HOUSTON-
TAYLOR-CLARK-BUFFALO-TREMPEALEAU-JACKSON-LA CROSSE-MONROE-JUNEAU-
ADAMS-VERNON-CRAWFORD-RICHLAND-GRANT-
320 PM CDT SAT JUL 16 2016

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

.DAY ONE...TONIGHT

THUNDERSTORMS ARE EXPECTED TO MOVE ACROSS THE AREA AFTER 1 AM.
THE MAIN HAZARDS FROM THESE STORMS INCLUDE STRONG GUSTY
WINDS...BRIEF HEAVY RAINFALL AND FREQUENT LIGHTNING.

.DAYS TWO THROUGH SEVEN...SUNDAY THROUGH FRIDAY

THUNDERSTORMS ARE EXPECTED SUNDAY MORNING WITH BRIEF HEAVY RAIN
AND LIGHTNING THE MAIN CONCERN. ADDITIONAL STORMS ARE POSSIBLE
SUNDAY AFTERNOON AND EVENING. A FEW OF THESE COULD PRODUCE
DAMAGING WINDS AND LARGE HAIL...MAINLY ACROSS PORTIONS OF
NORTHEAST IOWA AND SOUTHWEST WISCONSIN.

THUNDERSTORMS ARE POSSIBLE TUESDAY NIGHT INTO FRIDAY. AT THIS
TIME IT IS TOO EARLY TO DISCERN WHETHER THERE WILL BE ANY SEVERE
RISK WITH THESE STORMS.

HEAT INDEX VALUES OF 100 T0 110 ARE POSSIBLE THURSDAY AFTERNOON.

.SPOTTER INFORMATION STATEMENT...

SPOTTER ACTIVATION IS NOT ANTICIPATED THROUGH SUNDAY MORNING...
THOUGH ANY WIND OR HEAVY RAIN REPORTS WOULD BE GREATLY
APPRECIATED. A FEW SPOTTER GROUPS MAY BE NEEDED SUNDAY AFTERNOON
AND EVENING.

.EMERGENCY MANAGEMENT COORDINATION...

NO WEBINAR IS SCHEDULED.

IAZ008-009-018-019-MNZ086-087-094-095-171300-
MITCHELL-HOWARD-FLOYD-CHICKASAW-DODGE-OLMSTED-MOWER-FILLMORE-
320 PM CDT SAT JUL 16 2016

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

.DAY ONE...TONIGHT

THUNDERSTORMS ARE EXPECTED TO MOVE ACROSS THE AREA AFTER 1 AM. A
FEW STORMS COULD PRODUCE DAMAGING WIND GUSTS. OTHERWISE THE MAIN
HAZARDS FROM THESE STORMS INCLUDE STRONG GUSTY WINDS...BRIEF HEAVY
RAINFALL AND FREQUENT LIGHTNING.

.DAYS TWO THROUGH SEVEN...SUNDAY THROUGH FRIDAY

THUNDERSTORMS ARE EXPECTED SUNDAY MORNING WITH BRIEF HEAVY RAIN
AND LIGHTNING THE MAIN CONCERN. ADDITIONAL STORMS ARE POSSIBLE
SUNDAY AFTERNOON AND EVENING. A FEW OF THESE COULD PRODUCE
DAMAGING WINDS AND LARGE HAIL...MAINLY ACROSS NORTHEAST IOWA.

THUNDERSTORMS ARE POSSIBLE TUESDAY NIGHT INTO FRIDAY. AT THIS
TIME IT IS TOO EARLY TO DISCERN WHETHER THERE WILL BE ANY SEVERE
RISK WITH THESE STORMS.

HEAT INDEX VALUES OF 100 T0 110 ARE POSSIBLE THURSDAY AFTERNOON.

.SPOTTER INFORMATION STATEMENT...

SPOTTER ACTIVATION IS NOT ANTICIPATED THROUGH SUNDAY MORNING DUE
TO THE TIME OF DAY AND ISOLATED NATURE OF THE SEVERE POTENTIAL.
HOWEVER...ANY WIND OR HEAVY RAIN REPORTS WOULD BE GREATLY
APPRECIATED. A FEW SPOTTER GROUPS MAY BE NEEDED SUNDAY AFTERNOON
AND EVENING.

.EMERGENCY MANAGEMENT COORDINATION...

NO WEBINAR IS SCHEDULED.

AJ

In the hours before

Special weather statement, Jul 17, 12:00 AM CDT, 4 hours 25 minutes before

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE LA CROSSE WI
1200 AM CDT SUN JUL 17 2016

IAZ008-MNZ086-087-094-170530-
MITCHELL-DODGE-MOWER-OLMSTED-
1200 AM CDT SUN JUL 17 2016

...A LINE OF STRONG TO SEVERE THUNDERSTORMS WILL AFFECT NORTHERN
MITCHELL...MOWER...SOUTHERN DODGE AND SOUTHWESTERN OLMSTED
COUNTIES...

AT 1200 AM CDT...RADAR INDICATED STRONG THUNDERSTORMS WERE LOCATED
ALONG A LINE EXTENDING FROM 6 MILES WEST OF BLOOMING PRAIRIE TO NEAR
ALBERT LEA. MOVEMENT WAS EAST AT 35 MPH.

WIND GUSTS OF 50 TO 55 MPH AND NICKEL SIZE HAIL ARE POSSIBLE WITH
THESE STRONG TO SEVERE THUNDERSTORMS.

LOCATIONS IMPACTED INCLUDE...
AUSTIN...RAMSEY...STEWARTVILLE...HAYFIELD...GRAND MEADOW...ADAMS...
BROWNSDALE...LYLE...ROSE CREEK...HIGH FOREST...LANSING...RACINE...
MAYVILLE...DEXTER...MAPLEVIEW...WALTHAM...ELKTON...SARGEANT...
TAOPI AND I 90 EXIT 175.

THESE STRONG TO SEVERE THUNDERSTORMS MAY INTENSIFY...SO BE CERTAIN TO
MONITOR LOCAL RADIO STATIONS AND AVAILABLE TELEVISION STATIONS FOR
ADDITIONAL INFORMATION AND POSSIBLE WARNINGS FROM THE NATIONAL
WEATHER SERVICE.

LAT...LON 4391 9304 4384 9246 4345 9258 4347 9303
      4350 9303 4350 9305
TIME...MOT...LOC 0500Z 281DEG 29KT 4389 9317 4362 9342

WETENKAMP

Special weather statement, Jul 17, 12:58 AM CDT, 3 hours 27 minutes before

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Special weather statement, Jul 17, 2:06 AM CDT, 2 hours 19 minutes before

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Local storm report, Jul 17, 4:18 AM CDT, 7 minutes before

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Local storm report, Jul 17, 4:25 AM CDT, 0 minutes before

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Special weather statement, Jul 17, 4:25 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
Jul 17, 12:16 AM CDT	Severe Thunderstorm Warning	ARX	Mitchell	59 min
Jul 17, 12:51 AM CDT	Flash Flood Watch	ARX	Allamakee, Chickasaw, Clayton, Fayette, Floyd, Howard and 2 more	6 hr
Jul 17, 12:58 AM CDT	Special Weather Statement	ARX	Howard	32 min
Jul 17, 1:47 AM CDT	Flash Flood Warning	ARX	Mitchell	3 hr
Jul 17, 2:06 AM CDT	Special Weather Statement	ARX	Chickasaw, Floyd, Howard, Winneshiek	39 min
Jul 17, 2:44 AM CDT	Flash Flood Warning	ARX	Chickasaw, Floyd, Howard	4 hr
Jul 17, 11:36 AM CDT	Special Weather Statement	ARX	Allamakee, Chickasaw, Clayton, Fayette, Floyd, Howard and 2 more	54 min
Jul 16, 11:27 PM CDT	Special Weather Statement	ARX	Dodge, Mower, Olmsted, Wabasha	93 min
Jul 17, 12:00 AM CDT	Special Weather Statement	ARX	Mower	30 min
Jul 17, 2:13 AM CDT	Areal Flood Advisory	ARX	Dodge	3 hr

Nearby

Special Weather Statements in Wisconsin, 2016 Special Weather Statements in Iowa, 2016 Every special weather statement in 2016

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.