A lightning strike from an early morning thunderstorm on April 9th, struck the Monroe County law enforcement building in Sparta. The strike damaged some of the communication equipment inside the building.
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Deaths and injuries are direct and indirect together, as the offices filed them. Damage is property and crops in the dollars of the year, not adjusted for inflation, and only where an office estimated it.
The episode as NWS ARX wrote it up.
A lightning strike from an early morning thunderstorm on April 9th, struck the Monroe County law enforcement building in Sparta. The strike damaged some of the communication equipment inside the building.
The local office's own words before the first event, 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 the first event at Apr 8, 10:00 PM CST, 2 hours 36 minutes earlier.
AREA FORECAST DISCUSSION NATIONAL WEATHER SERVICE LA CROSSE WI 1100 PM CDT WED APR 8 2015 .SHORT TERM...(TONIGHT THRU THU NIGHT) ISSUED AT 235 PM CDT WED APR 8 2015 MAIN FCST CONCERNS THIS PERIOD...SHRA/TSRA CHANCES/RAIN AMOUNTS TONIGHT INTO THU NIGHT...SEVERE THREAT IN/NEAR SOUTHWEST WI THU AFTERNOON...SNOW POTENTIAL THU NIGHT...TEMPERATURES. 18Z DATA ANALYSIS HAD A BROAD AREA OF LOW PRESSURE CENTERED OVER EASTERN CO WITH A WARM FRONT EASTWARD THRU MO/CENTRAL IL. COOL CAN HIGH PRESSURE/RIDGING EXTENDED ACROSS LK SUPERIOR TO ND/SOUTHERN SASKAT. MUCH OF THE UPPER MIDWEST CAUGHT IN THE COOL EASTERLY FLOW BETWEEN THE HIGH/WARM FRONT...WITH PLENTY OF LOW LEVEL MOISTURE/ CLOUDS STUCK UNDER A RATHER STRONG INVERSION NEAR 850MB HELPING HOLD DOWN TEMPS AGAIN TODAY. MOST EARLY AFTERNOON TEMPS ACROSS MN/WI/IA ONLY IN THE MID 30S TO MID 40S. CONVECTION SO FAR TODAY LIMITED TO THE SOUTH 1/2 OF IA WHERE SOME MOISTURE WAS BEING PUSHED NORTHWARD OVER THE WARM FRONTAL BOUNDARY. NO PROBLEMS NOTED WITH 08.12Z MODEL INITIALIZATIONS. MODELS IN GOOD AGREEMENT AS THE SHORTWAVE ENERGY OVER THE CENTRAL ROCKIES MOVES INTO THE CENTRAL PLAINS BY 12Z THEN LIFTS TOWARD THE FCST AREA BY 00Z FRI. GOOD CONSENSUS FOR THE WAVE TO QUICKLY MOVE ACROSS/EAST OF THE FCST AREA THU EVENING WITH SECONDARY NORTHERN STREAM ENERGY TO DROP INTO THE REGION BEHIND IT LATER THU NIGHT. TREND IS A BIT FASTER AND WEAKER/MORE OPEN WAVE WITH THE FEATURE AS IT APPROACHES/ PASSES THU/THU NIGHT. GIVEN THE RATHER TIGHT CONSENSUS...SHORT TERM FCST CONFIDENCE IS GOOD THIS CYCLE. FOR THE SHORT TERM...LOWER LEVEL THERMO-DYNAMIC FORCING/LIFT AND 850- 700MB MOISTURE TRANSPORT/THETA-E CONVERGENCE QUICKLY INCREASE/ SPREAD NORTHEAST ACROSS THE FCST AREA LATE THIS AFTERNOON/EVENING. THIS WITH PW VALUES IN THE INFLOW AIRMASS OF 1 TO 1.25 INCHES. THIS WITH FALLING HGTS AHEAD OF THE SHORTWAVE TROUGH ADVANCING INTO THE CENTRAL PLAINS AND SOME ELEVATED MUCAPE OF 250-750 J/KG COMING NORTH WITH THE INFLOW AIRMASS. ALL INDICATIONS ARE SHRA/TSRA TO SPREAD RATHER QUICKLY NORTH/NORTHEAST ACROSS THE FCST AREA THIS EVENING AS THE LEAD ROUND OF STRONGER LOW LEVEL FORCING LIFTS ACROSS THE AREA. TRENDED THE EVENING PRECIP CHANCES TOWARD 80-100 PERCENT FROM SOUTHWEST TO NORTHEAST ACROSS THE FCST AREA THRU THE EVENING. SFC LOW MOVES INT SOUTHWEST IA/NORTHWEST MO BY 12Z THU WITH THE WARM FRONT AHEAD OF IT JUST SOUTH OF THE WI/IL BORDER. DEEP LAYERED FORCING/LIFT INCREASE AGAIN LATE TONIGHT AND FOR THU WITH APPROACH OF THE MID LEVEL SHORTWAVE/TROUGH...WITH A STRONG FN CONVERGENCE SIGNAL AND DEVELOPMENT/TRANSITION TO A DEFORMATION BAND OF PRECIP ACROSS THE AREA NORTH OF THE LOW/WARM FRONT FOR THU INTO THU NIGHT. CAPE POOL IS JUST SOUTH OF THE FCST AREA THU...WITH SOME OF THIS COMING NORTH INTO THE FCST AREA WITH THE INFLOW AIR. WILL TREND TOWARD HIGHEST TSRA CHANCES ACROSS THE CENTRAL/SOUTH PARTS OF THE FCST AREA CLOSE TO THE SFC LOW/CAPE POOL. WITH 07.12Z NAM HAVING DONE A VERY GOOD JOB WITH PRECIP/QPF TUE AFTERNOON/EVENING...WILL LEAN TOWARD ITS PRECIP FCST FOR TONIGHT/THU WITH RAIN AMOUNTS OF 0.75 TO 1.25 INCHES LIKELY ACROSS MUCH OF THE FCST AREA. SFC LOW TRACK WILL HAVE AN IMPACT ON THE SVR CHANCES ACROSS THE SOUTHEAST END OF THE FCST AREA THU AFTERNOON. LATEST MODEL CONSENSUS IS FURTHER SOUTH WITH THE SFC LOW TRACK...CROSSING THE GRANT CO/IL BORDER AREA AROUND MID AFTERNOON THU. THIS WOULD EFFECTIVELY KEEP THE WARM SECTOR AND MUCH OF ANY SVR STORM RISK OUT OF THE FCST AREA. WILL LEAVE THE SVR RISK FOR THE SOUTHEAST END OF THE FCST FOR THU AFTERNOON AS IS FOR NOW...SEE SWODY2 FOR MORE DETAILS. THE LAST MAIN PROBLEM IS POTENTIAL PRECIP TYPE THU NIGHT BEFORE THE DEFORMATION BAND WEAKENS/MOVES OUT OF THE FCST AREA. MODEL SOUNDINGS SHOWING STRONG COOLING THE LOWER LEVELS THU EVENING WITH PASSAGE OF THE 850-500MB TROUGH AXIS...ENOUGH SO FOR PRECIP TO MIX WITH/CHANGE TO SNOW BEFORE ENDING OVER THE NORTHWEST HALF OF THE FCST AREA. THIS BEFORE THE DEEPER MOISTURE/ICE IN THE CLOUD TOPS WOULD MOVE OUT. TOUGH CALL BUT HAVE TO ENTERTAIN THE POSSIBILITY OF SOME WET SNOW ACCUMULATIONS ON GRASSY AREAS ACROSS SOUTHEAST MN INTO NORTH-CENTRAL WI THRU THE MID/LATE EVENING HOURS OF THU NIGHT AND ADDED THIS TO THE FCST GRIDS. USED A BLEND OF THE GUIDANCE LOWS/HIGHS FOR TONIGHT THRU THU NIGHT. .LONG TERM...(FRIDAY THROUGH WEDNESDAY) ISSUED AT 235 PM CDT WED APR 8 2015 MAIN FCST CONCERNS FOR FRIDAY THRU SATURDAY NIGHT...LINGERING -SHRA UNDER THE COLD POOL/MID LEVEL TROUGH FRI...RETURNING MOISTURE SMALL SHRA/TSRA CHANCE LATE SAT NIGHT...TEMPERATURES THRU THE PERIOD. 08.12Z MODELS IN GOOD AGREEMENT FOR THE NORTHERN STREAM SHORTWAVE/ TOUGH AXIS TO SWING SOUTHEAST ACROSS THE REGION FRI. TREND IS A BIT STRONGER WITH THIS FEATURE. GOOD CONSENSUS FOR THIS TROUGH TO EXIT QUICKLY WITH A SHORTWAVE RIDGE AXIS ALREADY OVER THE REGION BY 18Z SAT. THIS FEATURE ALSO RATHER TRANSIENT...PUSHED QUICKLY EAST BY STRONGER SHORTWAVE ENERGY MOVING EAST ALONG THE US/CAN BORDER AND INTO THE NORTHERN PLAINS BY 12Z SUN. TREND IS FASTER WITH THE US/CAN BORDER SHORTWAVE AT 12Z SUN. OVERALL FCST CONFIDENCE IN THE FRI THRU SAT NIGHT PERIOD IS AVERAGE TO GOOD THIS CYCLE. THIS PERIOD STARTS WITH THE STRONGER SFC-700MB LOW/TROUGH EXITING QUICKLY EAST. NORTHERN STREAM SHORTWAVE DROPPING IN BRINGS A RATHER COLD 925-700MB AIRMASS ACROSS THE AREA FRI AFTERNOON. THIS WITH 700MB TEMPS IN THE -8C TO -14C RANGE. MODEL SOUNDINGS SHOWING STEEP LOW LEVEL LAPSE RATES/MIXING TO 700/650MB DURING THE FRI AFTERNOON HOURS WITH SOME MOISTURE IN THE 900-850MB LAYER. CHANCE OF -SHRA/- SHSN FRI MORNING/-SHRA FRI AFTERNOON OVER THE NORTHEAST 1/3 TO 1/2 OF THE FCST AREA LOOKS QUITE REASONABLE. THIS QUICKLY PASSES WITH RISING HGTS/HIGH PRESSURE RIDGING BUILDING ACROSS THE AREA FRI NIGHT/SAT. SFC RIDGE AXIS IS NEAR/OVER THE AREA FRI NIGHT. WITH CLEAR/CLEARING SKIES AND LIGHT WINDS...STRONGER RADIATIONAL COOLING AND A COLDER NIGHT EXPECTED. SOUTHERLY FLOW/LOW LEVEL WARM ADVECTION RETURN SAT WITH 925MB TEMPS IN THE +8C TO +12C RANGE BY 00Z SUN AND MODEL SOUNDINGS SHOWING MIXING TO NEAR 850MB. THESE 925MB TEMPS SUPPORTING HIGHS ON SAT IN THE UPPER 50S TO MID 60S. LOW LEVEL WARM ADVECTION CONTINUES SAT NIGHT WITH A SLOW INCREASE OF MOISTURE. SOUTH GRADIENT WINDS 8-15KTS SAT NIGHT KEEP THE BOUNDARY LAYER STIRRED/MIXED AND LOWS LOOKING TO BE SOME 12F TO 20F WARMER THAN THOSE OF FRI NIGHT/SAT MORNING. MAIN AXIS OF MOISTURE TRANSPORT/ INCREASE/WEAK INSTABILITY REMAINS WEST OF THE FCST AREA UNTIL LATER SAT NIGHT AND LIMITED SMALL -SHRA/-TSRA CHANCE ACROSS THE WEST END OF THE FCST AREA TO AFTER 06Z SUN. USED A BLEND OF THE MODEL/ ENSEMBLE HIGHS/LOWS FOR FRI THRU SAT NIGHT. FOR SUN THRU WED...DAYS 4 TO 7... MAIN FCST CONCERNS THIS PERIOD...SHRA/TSRA CHANCES MUCH OF THE PERIOD...ABOVE NORMAL TEMPERATURES. 08.00Z/08.12Z MEDIUM RANGE MODELS IN GOOD AGREEMENT SUN FOR THE SHORTWAVE RIDGING FROM SAT TO BE FLATTENED/PUSHED EAST OF THE REGION BY A STRONGER SHORTWAVE MOVING EAST ALONG THE US/CAN BORDER. TREND IS TOWARD QUASI-ZONAL FLOW ACROSS THE NORTHERN CONUS SUN NIGHT/ MON...AS SHIFT FROM A MORE AMPLIFIED NOAM PATTERN IN THE MAR 06/07 MODEL RUNS. REASONABLE AGREEMENT AMONG MODELS THAT THIS ZONAL FLOW WILL NOT LAST LONG AS STRONG ENERGY/TROUGHING MOVES INTO THE WESTERN CONUS...WITH SOUTHWEST FLOW ALOFT OVER MUCH OF THE CENTRAL CONUS BY LATER TUE AND FOR WED AS DEEP TROUGHING/MID LEVEL LOW DEVELOPS OVER THE ROCKIES. REASONABLE AGREEMENT FOR A SHORTWAVE AHEAD OF THE MAIN ROCKIES TROUGH TO LIFT TOWARD/ACROSS THE UPPER MIDWEST TUE/TUE NIGHT. GIVEN THE REASONABLE CONSISTENCY BETWEEN THE MODELS OUT TO WED...DAY 4-7 FCST CONFIDENCE IS AVERAGE THIS CYCLE. LOWER LEVEL WARM/MOISTURE ADVECTION AHEAD OF THE NEXT TROUGH/FRONT CROSSING THE PLAINS CONTINUES INTO THE UPPER MIDWEST SUN. PW VALUES IN THE 1+ INCH RANGE AHEAD OF THE TROUGH/FRONT PROGGED TO PUSH ACROSS THE AREA LATER SUN/SUN EVENING...ALONG WITH MUCAPE IN THE 500- 1000 J/KG RANGE. MODEST 850-700MB FN CONVERGENCE WITH THE TROUGH/ FRONT ALONG WITH SOME LIFT/DIVERGENCE ALOFT AHEAD OF THE SHORTWAVE. CONSENSUS 25-40 PERCENT SHRA/TSRA CHANCES SUN/SUN NIGHT APPEAR WELL TRENDED. DRIER CAN/NORTHERN PLAINS HIGH PRESSURE TO BUILD IN BEHIND THE FRONT FOR MON...WITH MON/MON EVENING NOW TRENDING DRY. AS STRONGER TROUGHING DIGS INTO THE WESTERN CONUS MON NIGHT INTO WED... TROUGHING DEVELOPS IN THE CENTRAL PLAINS. STRENGTHENING SOUTHERLY FLOW AHEAD OF THIS LOW/TROUGH LOOKS TO QUICKLY RETURN MOISTURE NORTHWARD INTO THE UPPER MIDWEST BY LATER MON NIGHT AND THRU WED. PW VALUES IN THIS MOISTURE PLUME INTO THE AREA PROGGED INTO THE 1 TO 1.5 INCH RANGE BY LATER TUE. CAPE INCREASES INTO THE AREA AS WELL BY LATER TUE INTO WED. DEEPER LAYERED FORCING/LIFT ACROSS THE REGION AS WELL TUE/WED AHEAD OF THE SFC LOW/MID LEVEL TROUGHING ADVANCING SLOWLY EAST ACROSS/INTO THE CENTRAL CONUS. 30-40 PERCENT SHRA/TSRA CHANCES FOR TUE INTO WED LOOK GOOD AT THIS TIME. 850MB TEMPS PROGGED IN THE +7C TO +11C MUCH OF THE SUN-WED PERIOD WITH NAEFS SHOWING THIS TO BE 1 TO 1.5 STANDARDIZED ANOMALIES ABOVE NORMAL. WARMER MODEL/ENSEMBLE CONSENSUS HIGHS IN THE UPPER 50S/60S FOR SUN-WED APPEAR WELL TRENDED. && .AVIATION...(FOR THE 06Z TAFS THROUGH 06Z THURSDAY NIGHT) ISSUED AT 1100 PM CDT WED APR 8 2015 CIGS... NOT A LOT OF CHANGE EXPECTED THROUGH THU NIGHT WITH MOST CIGS HOVERING AROUND OR BELOW 1 KFT. VARIOUS BOUTS OF SHRA/TS WILL KEEP CIGS LOWS...AS WILL POOLED MOISTURE UNDER A STRONG LOW LEVEL INVERSION. WINDS... WINDS WILL GO FROM EAST TO NORTH NORTH/NORTHWEST THU AFTERNOON AS AN AREA OF LOW PRESSURE SLIDES JUST SOUTH OF THE TAF SITES. INCREASING PRESSURE GRADIENT ON THE NORTHWEST SIDE OF THE LOW SHOULD RESULT IN AN INCREASE IN SUSTAINED WINDS - ALONG WITH THE POTENTIAL FOR HIGHER GUSTS - THU NIGHT. WX/VSBY... BANDS OF SHOWERS WILL SWEEP ACROSS THE REGION TONIGHT INTO THU NIGHT. THERE WILL LIKELY BE SEVERAL HOUR BREAKS BETWEEN THEM...BUT TRYING TO FERRET OUT EXACT TIMING IS PROBLEMATIC...SO WON/T GET THAT REFINED IN THE FORECAST. FOR THUNDER CHANCES...BUFKIT SOUNDINGS SHOW MEAGER INSTABILITY A LOFT...AND INTERESTINGLY MOST OF IT IS ABOVE THE SATURATED LAYER. THAT SAID...A FEW STORMS HAVE DEVELOPED AND APPROACHED KRST/KLSE. HAD TO UPDATE PREVIOUS TAFS TO INCLUDE MENTION FOR A FEW HOURS PAST 06Z. RUC GRADUALLY SINKS THE ELEVATED INSTABILITY SOUTHWARD OVERNIGHT. COULD BE ISOLATED THUNDER THU INTO THU NIGHT...BUT CONFIDENCE TOO LOW TO INCLUDE IN FORECAST AT THIS TIME. ALSO OF NOTE IN THE BUFKIT SOUNDINGS IS THE SOMEWHAT SHALLOW NATURE OF A LOT OF THE SATURATION. IN MANY WAYS ITS MORE SUGGESTIVE OF A HEAVY DRIZZLE RATHER THAN SHRA/RA TYPE EVENT. HAVE NOTED DRIZZLE ALREADY THIS EVENING...BEFORE SHOWERS MOVED IN. THU AFTERNOON SEEMS TO FAVOR DRIZZLE TOO. VSBYS WILL BE RESTRICTED IN THE HEAVIER PCPN...ESPECIALLY IF HEAVY DRIZZLE MANIFESTS. SOME FOG SHOULD HELP LOWER VSBYS OVERNIGHT INTO THU MORNING. && .HYDROLOGY...FOR TONIGHT/THURSDAY ISSUED AT 235 PM CDT WED APR 8 2015 PORTIONS OF THE FCST AREA RECEIVED 1 TO 2 INCHES OF RAIN LATE TUE/TUE EVENING. THESE RAINS PRODUCED MINOR WITHIN BANK RISES ON SOME OF THE RIVERS/STREAMS OF THE AREA. ANOTHER 0.5 TO 1.5 INCHES OF RAIN ARE EXPECTED TONIGHT INTO THU EVENING. IF THIS RAIN WERE TO FALL IN AN HOUR...MORE PRONOUNCED RISES MIGHT OCCUR ON SOME RIVERS AND STREAMS. HOWEVER...THIS RAIN IS EXPECTED TO FALL OVER A 24 TO 36 HR PERIOD. LITTLE MORE THAN ADDITIONAL MINOR WITHIN BANK RISES ARE ANTICIPATED TONIGHT THRU THU NIGHT...WITH THE DRIER SUB-SOILS ALLOWING MUCH OF THIS NEEDED MOISTURE TO SOAK INTO THE GROUND. && .ARX WATCHES/WARNINGS/ADVISORIES... WI...NONE. MN...NONE. IA...NONE. && SHORT TERM...RRS LONG TERM....RRS AVIATION.....RIECK HYDROLOGY....RRS
HAZARDOUS WEATHER OUTLOOK NATIONAL WEATHER SERVICE LA CROSSE WI 346 PM CDT WED APR 8 2015 WIZ017-029-091200- TAYLOR-CLARK- 346 PM CDT WED APR 8 2015 THIS HAZARDOUS WEATHER OUTLOOK IS FOR PORTIONS NORTH CENTRAL WISCONSIN. .DAY ONE...TONIGHT THERE WILL BE A CHANCE OF THUNDERSTORMS LATE TONIGHT. LIGHTNING WILL BE THE MAIN HAZARD WITH ANY OF THESE THUNDERSTORMS. .DAYS TWO THROUGH SEVEN...THURSDAY THROUGH TUESDAY THUNDERSTORMS WILL BE POSSIBLE ON THURSDAY. LIGHTNING WILL BE THE MAIN THREAT WITH ANY THUNDERSTORMS. RAIN MAY MIX WITH AND CHANGE TO SNOW THURSDAY NIGHT. A SLUSHY INCH OR TWO OF SNOWFALL IS POSSIBLE...MAINLY ON GRASSY SURFACES AND ALONG AND NORTH OF HIGHWAY 29. THUNDERSTORMS ARE POSSIBLE AGAIN SUNDAY AND SUNDAY NIGHT. IT IS TOO EARLY TO DETERMINE IF THERE IS A SEVERE THREAT WITH ANY OF THESE POTENTIAL THUNDERSTORMS. .SPOTTER INFORMATION STATEMENT... RAINFALL AND OR SNOW REPORTS WOULD GREATLY APPRECIATED THURSDAY AND THURSDAY NIGHT. .EMERGENCY MANAGEMENT COORDINATION... NO WEBINAR IS SCHEDULED. IAZ008>011-018-019-029-MNZ079-086>088-094>096-WIZ032>034-041>044- 053-091200- MITCHELL-HOWARD-WINNESHIEK-ALLAMAKEE-FLOYD-CHICKASAW-FAYETTE- WABASHA-DODGE-OLMSTED-WINONA-MOWER-FILLMORE-HOUSTON-BUFFALO- TREMPEALEAU-JACKSON-LA CROSSE-MONROE-JUNEAU-ADAMS-VERNON- 346 PM CDT WED APR 8 2015 THIS HAZARDOUS WEATHER OUTLOOK IS FOR PORTIONS NORTHEAST IOWA... SOUTHEAST MINNESOTA AND WEST CENTRAL INTO CENTRAL WISCONSIN. .DAY ONE...TONIGHT SCATTERED THUNDERSTORMS ARE EXPECTED TO SPREAD NORTH ACROSS THE AREA TONIGHT. LIGHTNING WILL BE THE MAIN HAZARD WITH ANY OF THESE THUNDERSTORMS. .DAYS TWO THROUGH SEVEN...THURSDAY THROUGH TUESDAY THUNDERSTORMS WILL BE POSSIBLE ON THURSDAY. LIGHTNING WILL BE THE MAIN THREAT WITH ANY THUNDERSTORMS. ANY STORMS SOUTH OF INTERSTATE 90 MAY PRODUCE SOME HAIL. RAIN MAY MIX WITH AND CHANGE TO SNOW THURSDAY NIGHT...MAINLY ALONG AND NORTH OF INTERSTATE 90. MINOR SLUSHY ACCUMULATIONS ARE POSSIBLE ON GRASSY SURFACES. THUNDERSTORMS ARE POSSIBLE AGAIN SUNDAY AND SUNDAY NIGHT. IT IS TOO EARLY TO DETERMINE IF THERE IS A SEVERE THREAT WITH ANY OF THESE POTENTIAL THUNDERSTORMS. .SPOTTER INFORMATION STATEMENT... RAINFALL AND OR SNOW REPORTS WOULD GREATLY APPRECIATED THURSDAY AND THURSDAY NIGHT. .EMERGENCY MANAGEMENT COORDINATION... NO WEBINAR IS SCHEDULED. IAZ030-WIZ054-055-061-091200- CLAYTON-CRAWFORD-RICHLAND-GRANT- 346 PM CDT WED APR 8 2015 THIS HAZARDOUS WEATHER OUTLOOK IS FOR PORTIONS OF NORTHEAST IOWA AND SOUTHWEST WISCONSIN. .DAY ONE...TONIGHT SCATTERED THUNDERSTORMS ARE EXPECTED TO SPREAD NORTH ACROSS THE AREA TONIGHT. LIGHTNING WILL BE THE MAIN HAZARD WITH ANY OF THESE THUNDERSTORMS. .DAYS TWO THROUGH SEVEN...THURSDAY THROUGH TUESDAY THUNDERSTORMS WILL BE POSSIBLE ON THURSDAY. A FEW OF THESE COULD BE SEVERE LATER THURSDAY MORNING INTO THURSDAY AFTERNOON...WITH LARGE HAIL THE MAIN THREAT. THUNDERSTORMS ARE POSSIBLE AGAIN SUNDAY AND SUNDAY NIGHT. IT IS TOO EARLY TO DETERMINE IF THERE IS A SEVERE THREAT WITH ANY OF THESE POTENTIAL THUNDERSTORMS. .SPOTTER INFORMATION STATEMENT... SPOTTERS MAY BE NEEDED LATER THURSDAY MORNING INTO THURSDAY AFTERNOON. .EMERGENCY MANAGEMENT COORDINATION... NO WEBINAR IS SCHEDULED. BOYNE/RRS
SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE LA CROSSE WI 1100 PM CDT WED APR 8 2015 IAZ008>011-018-019-029-030-MNZ079-086>088-094>096-WIZ032>034- 041>044-053>055-061-090700- MITCHELL-HOWARD-WINNESHIEK-ALLAMAKEE-FLOYD-CHICKASAW-FAYETTE- CLAYTON-WABASHA-DODGE-OLMSTED-WINONA-MOWER-FILLMORE-HOUSTON- BUFFALO-TREMPEALEAU-JACKSON-LA CROSSE-MONROE-JUNEAU-ADAMS-VERNON- CRAWFORD-RICHLAND-GRANT- INCLUDING THE CITIES OF...DECORAH...WAUKON...CHARLES CITY... OELWEIN...ROCHESTER...WINONA...AUSTIN...BLACK RIVER FALLS... LA CROSSE...SPARTA/TOMAH...MAUSTON...VIROQUA...PRAIRIE DU CHIEN... RICHLAND CENTER...PLATTEVILLE 1100 PM CDT WED APR 8 2015 ...SHOWERS AND SCATTERED THUNDERSTORMS TONIGHT... AREAS OF SHOWERS WITH A FEW THUNDERSTORMS WILL TRACK NORTHEAST ACROSS THE REGION TONIGHT. THROUGH 2 AM...A FEW OF THE STORMS COULD BE STRONG ENOUGH TO PRODUCE PEA SIZED HAIL. EXPECT BRIEF DOWNPOURS AND AN OCCASIONAL LIGHTNING STRIKE. RIECK
PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE LA CROSSE WI
1229 AM CDT THU APR 9 2015
...TIME... ...EVENT... ...CITY LOCATION... ...LAT.LON...
...DATE... ....MAG.... ..COUNTY LOCATION..ST.. ...SOURCE....
..REMARKS..
1225 AM HAIL DECORAH 43.31N 91.79W
04/09/2015 E0.25 INCH WINNESHIEK IA PUBLIC
&&
JSBSPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE LA CROSSE WI 1241 AM CDT THU APR 9 2015 IAZ009>011-019-029-030-MNZ079-087-088-095-096-WIZ032>034-041>044- 053>055-061-090700- HOWARD-WINNESHIEK-ALLAMAKEE-CHICKASAW-FAYETTE-CLAYTON-WABASHA- OLMSTED-WINONA-FILLMORE-HOUSTON-BUFFALO-TREMPEALEAU-JACKSON- LA CROSSE-MONROE-JUNEAU-ADAMS-VERNON-CRAWFORD-RICHLAND-GRANT- INCLUDING THE CITIES OF...DECORAH...WAUKON...OELWEIN... ROCHESTER...WINONA...BLACK RIVER FALLS...LA CROSSE... SPARTA/TOMAH...MAUSTON...VIROQUA...PRAIRIE DU CHIEN... RICHLAND CENTER...PLATTEVILLE 1241 AM CDT THU APR 9 2015 ...SCATTERED THUNDERSTORMS MOVING THROUGH THE AREA... THROUGH 2 AM...SCATTERED THUNDERSTORMS WILL MOVE NORTHEAST AT 40 MPH ACROSS PARTS OF SOUTHEAST MINNESOTA...NORTHEAST IOWA...AND WESTERN WISCONSIN. A FEW OF THESE STORMS WILL BE CAPABLE OF PRODUCING UP TO DIME SIZE HAIL. BOYNE
The La Crosse radar (KARX), 32 km away, was scanning. The volume nearest the first event began at 06:34 UTC.
1 lightning. Local standard time, as filed.
Lightning hit the Monroe County law enforcement building damaging some of the communication equipment inside the building.
After NWS Directive 10-1605, the rules offices file Storm Data by.
Every storm in Wisconsin in 2015Every state in 2015This day in weather historyWarnings in Wisconsin, April 2015
NOAA National Centers for Environmental Information, Storm Events Database, compiled from the National Weather Service’s monthly Storm Data. Complete through 2026-06; NCEI adds each month about 75 days after it ends and revises past years a few times a year. Rebuilt 2026-09-24. Each event’s entry at NCEI: 566887.