June 30th, 2014 Severe Storms

Photos Storm Reports Rainfall Reports Wind Reports

A cluster of showers and thunderstorms developed over eastern Nebraska and intensified as they marched east across Iowa, eventually organizing into a "bow echo." A bow echo is a line of storms (in the shape of a bow on radar) notorious for producing severe wind gusts and damage. The northern end of this bow crossed Fayette and Clayton counties in Iowa, as well as much of southern Wisconsin. Wind gusts as high as 80 mph were reported, along with numerous trees down. Very heavy rainfall also accompanied the bow, prompting flash flood warnings.

When the bow passed, winds picked up from the southeast around Preston and  La Crosse, which both saw wind gusts of 40 to 50 mph. These gusts were associated with a phenomenon called a "wake low," which forms in the wake of strong thunderstorm complexes. Basically, the atmosphere is trying to readjust from the high winds that the bow produced.

Radar Loop

Radar Loop from 1:37 pm to 7:36 pm 

(click for larger loop)


Photos:

Near Montfort WI (Grant County) 

Shelf cloud near Montfort, WI (Grant County)

 Sunset in Tomah in wake of storms

Sunset in Tomah, WI in the wake of the storms

 

 


Storm Reports:

graphic showing storm reports from June 30th

PRELIMINARY LOCAL STORM REPORT...SUMMARY
NATIONAL WEATHER SERVICE LA CROSSE WI
818 PM CDT MON JUN 30 2014

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

0235 PM     TSTM WND GST     OELWEIN                 42.68N 91.91W
06/30/2014  M58 MPH          FAYETTE            IA   AWOS

            KOLZ G50KTS


0240 PM     TSTM WND GST     OELWEIN                 42.68N 91.91W
06/30/2014  E60 MPH          FAYETTE            IA   TRAINED SPOTTER

            WIND GUSTS OF 50 TO 60 MPH.


0300 PM     TSTM WND GST     STRAWBERRY POINT        42.68N 91.54W
06/30/2014  E60 MPH          CLAYTON            IA   PUBLIC

            60+ MPH WIND GUSTS


0305 PM     TSTM WND DMG     VOLGA                   42.80N 91.54W
06/30/2014                   CLAYTON            IA   LAW ENFORCEMENT

            TREES AND POWERLINES DOWN


0307 PM     TSTM WND GST     VOLGA                   42.80N 91.54W
06/30/2014  E80 MPH          CLAYTON            IA   TRAINED SPOTTER



0315 PM     TSTM WND DMG     ELKADER                 42.86N 91.40W
06/30/2014                   CLAYTON            IA   LAW ENFORCEMENT

            TREES AND POWERLINES DOWN


0316 PM     NON-TSTM WND GST GARBER                  42.74N 91.26W
06/30/2014  E75 MPH          CLAYTON            IA   LAW ENFORCEMENT

            TREES AND POWER LINES DOWN


0335 PM     TSTM WND DMG     GUTTENBERG              42.79N 91.10W
06/30/2014                   CLAYTON            IA   LAW ENFORCEMENT

            A LOT OF TREES DOWN BEING CLEANED UP FROM
            GARBER TO OSTERDOCK AND GUTTENBERG. TIME
            ESTIMATED FROM RADAR WHEN THE SEVERE WIND
            GUSTS MOVED THROUGH.


0349 PM     TSTM WND DMG     PATCH GROVE             42.94N 90.97W
06/30/2014                   GRANT              WI   EMERGENCY MNGR

            TREES DOWN


0350 PM     TSTM WND DMG     3 WSW WERLEY            43.00N 90.82W
06/30/2014                   GRANT              WI   TRAINED SPOTTER

            60-70 MPH ESTIMATED WIND GUSTS. TREE
            BRANCHES AND LIMBS FLYING. SOME TREES DOWN
            NEARBY.


0400 PM     TSTM WND GST     2 N LANCASTER           42.88N 90.71W
06/30/2014  M78 MPH          GRANT              WI   LAW ENFORCEMENT



0403 PM     FLASH FLOOD      GUTTENBERG              42.79N 91.10W
06/30/2014                   CLAYTON            IA   LAW ENFORCEMENT

            WATER OVER HIGHWAY 52 FOR A TIME BUT HAS
            RECEDED SINCE


0410 PM     FLASH FLOOD      OSBORNE                 42.80N 91.44W
06/30/2014                   CLAYTON            IA   LAW ENFORCEMENT

            WATER WAS OVER HIGHWAY 13 FOR A TIME BUT HAS
            RECEDED


0411 PM     FUNNEL CLOUD     LIVINGSTON              42.90N 90.43W
06/30/2014                   GRANT              WI   EMERGENCY MNGR



0411 PM     TSTM WND GST     LIVINGSTON              42.90N 90.43W
06/30/2014  M70 MPH          GRANT              WI   EMERGENCY MNGR



0417 PM     NON-TSTM WND GST 1 N FRENCH ISLAND       43.87N 91.26W
06/30/2014  M48 MPH          LA CROSSE          WI   ASOS

            KLSE ASOS


0426 PM     NON-TSTM WND GST 2 ESE LA CROSSE         43.81N 91.19W
06/30/2014  E43 MPH          LA CROSSE          WI   OFFICIAL NWS OBS

            MEASURED WIND GUST ON OFFICE EQUIPMENT


0800 PM     FLASH FLOOD      3 W RANDALIA            42.86N 91.95W
06/30/2014                   FAYETTE            IA   LAW ENFORCEMENT

            T AVENUE...BETWEEN HIGHWAY 93 AND 160TH
            ST...IS CLOSED DUE TO FLOODING.

Rainfall Amounts:

Radar Estimated Precipitation

Radar Estimated Precipitation (click for larger image) 

LOCATION                       AMOUNT    TIME/DATE       LAT/LON

...IOWA...

...ALLAMAKEE...
4 ENE WATSON                   0.46 IN   0745 PM 06/30   43.11N/91.26W
3 SE WATERVILLE                0.38 IN   0707 PM 06/30   43.17N/91.24W
3 S DORCHESTER                 0.31 IN   0700 PM 06/30   43.42N/91.51W

...CHICKASAW...
IONIA 2W                       0.88 IN   0745 PM 06/30   43.03N/92.50W

...CLAYTON...
ELKADER                        1.48 IN   0745 PM 06/30   42.84N/91.40W
LITTLEPORT                     1.22 IN   0745 PM 06/30   42.75N/91.37W
GARBER                         0.93 IN   0715 PM 06/30   42.74N/91.26W
BLOODY RUN CREEK               0.25 IN   0700 PM 06/30   43.04N/91.21W

...FAYETTE...
FAYETTE                        1.69 IN   0755 PM 06/30
ELDORADO                       0.72 IN   0745 PM 06/30   43.05N/91.81W

...FLOYD...
CHARLES CITY                   0.25 IN   0730 PM 06/30   43.06N/92.67W

...HOWARD...
3 NE RICEVILLE                 0.33 IN   0755 PM 06/30   43.40N/92.50W

...MITCHELL...
SAINT ANSGAR                   0.28 IN   0745 PM 06/30   43.38N/92.92W

...WINNESHIEK...
DECORAH                        0.33 IN   0745 PM 06/30   43.30N/91.80W
BLUFFTON                       0.27 IN   0745 PM 06/30   43.41N/91.90W

...MINNESOTA...

...FILLMORE...
FILLMORE                       0.10 IN   0730 PM 06/30   43.76N/92.27W
SO.FORK ROOT RIVER             0.05 IN   0730 PM 06/30   43.72N/91.98W

...HOUSTON...
HOUSTON                        0.24 IN   0745 PM 06/30   43.77N/91.57W
MOUND PRAIRIE                  0.20 IN   0745 PM 06/30   43.78N/91.45W

...MOWER...
DOBBING CR                     0.15 IN   0730 PM 06/30   43.67N/92.95W
TURTLE CREEK                   0.13 IN   0730 PM 06/30   43.65N/92.98W
1 NNE VARCO                    0.13 IN   0700 PM 06/30   43.64N/92.97W
LANSING                        0.09 IN   0730 PM 06/30   43.75N/92.95W

...OLMSTED...
1 SSE STEWARTVILLE             0.08 IN   0750 PM 06/30   43.84N/92.48W
1 WSW ROCHESTER                0.05 IN   0757 PM 06/30   44.01N/92.49W
ORONOCO 1W                     0.05 IN   0730 PM 06/30   44.17N/92.55W
PINE ISLAND 1S                 0.04 IN   0700 PM 06/30   44.19N/92.65W
BELTLINE-BEAR CREEK            0.04 IN   0730 PM 06/30   44.01N/92.45W
2 ENE ROCHESTER                0.04 IN   0730 PM 06/30   44.03N/92.42W
ROCHESTER BELTLINE             0.03 IN   0730 PM 06/30   44.01N/92.47W
ROCHESTER 3W                   0.03 IN   0730 PM 06/30   44.02N/92.53W
4 ESE DOUGLAS                  0.03 IN   0755 PM 06/30   44.09N/92.49W
3 NE ROCHESTER                 0.03 IN   0752 PM 06/30   44.04N/92.44W
ORONOCO                        0.02 IN   0730 PM 06/30   44.16N/92.54W
OXBOW PARK ALERT GAGE          0.02 IN   0700 PM 06/30   44.09N/92.64W
3 ESE DOUGLAS                  0.02 IN   0805 PM 06/30   44.08N/92.51W
CASCADE CREEK                  0.02 IN   0730 PM 06/30   44.03N/92.47W
3 NE ROCHESTER                 0.02 IN   0800 PM 06/30   44.05N/92.45W

...WABASHA...
1 NE BEAR VALLEY               0.06 IN   0753 PM 06/30   44.32N/92.44W
1 E LAKE CITY                  0.05 IN   0750 PM 06/30   44.45N/92.27W
MAZEPPA 3ESE                   0.04 IN   0730 PM 06/30   44.26N/92.49W
ZUMBRO RIVER                   0.01 IN   0700 PM 06/30   44.32N/92.00W

...WINONA...
DAKOTA                         0.02 IN   0700 PM 06/30   43.91N/91.36W
WHITEWATER RIVER NEAR BEAVER   0.02 IN   0745 PM 06/30   44.15N/92.00W

...WISCONSIN...

...CLARK...
NEILLSVILLE 1W                 0.06 IN   0700 PM 06/30   44.56N/90.61W

...CRAWFORD...
STEUBEN                        0.53 IN   0745 PM 06/30   43.18N/90.86W
DE SOTO                        0.28 IN   0751 PM 06/30   43.42N/91.19W

...GRANT...
MUSCODA 6S                     1.05 IN   0730 PM 06/30
GRANT RIVER                    0.90 IN   0700 PM 06/30   42.72N/90.82W
1 ENE BOSCOBEL                 0.77 IN   0803 PM 06/30   43.15N/90.68W
MUSCODA                        0.36 IN   0745 PM 06/30   43.20N/90.44W

...JACKSON...
1 E BLACK RIVER FALLS          0.08 IN   0715 PM 06/30   44.30N/90.83W

...JUNEAU...
MAUSTON                        0.25 IN   0752 PM 06/30   43.80N/90.07W
NECEDAH                        0.18 IN   0748 PM 06/30   44.03N/90.08W

...LA CROSSE...
LA CROSSE RIVERSIDE PARK       0.32 IN   0700 PM 06/30   43.81N/91.26W
LA CROSSE NWS                  0.27 IN   0700 PM 06/30
2 SW LA CROSSE                 0.16 IN   0700 PM 06/30   43.80N/91.26W
1 SW LA CROSSE                 0.02 IN   0718 PM 06/30   43.81N/91.25W

...MONROE...
2 ESE MELVINA                  0.06 IN   0745 PM 06/30   43.79N/90.75W

...TAYLOR...
3 NE LUBLIN                    0.03 IN   0714 PM 06/30   45.11N/90.69W

...TREMPEALEAU...
2 WSW GALESVILLE               0.08 IN   0751 PM 06/30   44.07N/91.39W

...VERNON...
READSTOWN                      0.41 IN   0700 PM 06/30   43.45N/90.76W
LA FARGE                       0.34 IN   0700 PM 06/30   43.57N/90.64W
ONTARIO                        0.28 IN   0700 PM 06/30   43.72N/90.59W

OBSERVATIONS ARE COLLECTED FROM A VARIETY OF SOURCES WITH VARYING
EQUIPMENT AND EXPOSURE. NOT ALL DATA LISTED ARE CONSIDERED OFFICIAL.

Wind Reports:

LOCATION                       SPEED     TIME/DATE       LAT/LON             
OELWEIN MUNICIPAL AIRPORT      58 MPH    0235 PM 06/30   42.68N/91.97W        
PRESTON FILLMORE COUNTY AIRPOR 48 MPH    0332 PM 06/30   43.68N/92.18W       
LA CROSSE REGIONAL AIRPORT     48 MPH    0414 PM 06/30   43.88N/91.26W       
WFO LA CROSSE                  40 MPH    0500 PM 06/30   43.82N/91.19W       
2 ESE CANTON                   39 MPH    0405 PM 06/30   43.51N/91.88W       
PRAIRIE DU CHIEN  AIRPORT      39 MPH    0355 PM 06/30   43.02N/91.12W       
SPARTA/FORT MC COY AIRPORT     37 MPH    0455 PM 06/30   43.96N/90.74W       
3 NE RICEVILLE                 36 MPH    0325 PM 06/30   43.40N/92.50W       
PLATTEVILLE MUNICIPAL AIRPORT  36 MPH    0415 PM 06/30   42.69N/90.44W       
1 ENE DEXTER                   35 MPH    0305 PM 06/30   43.73N/92.68W       
2 N TOMAH                      32 MPH    0505 PM 06/30   44.02N/90.50W       
CHARLES CITY AIRPORT           32 MPH    0335 PM 06/30   43.07N/92.61W       
VOLK FIELD AIRPORT             32 MPH    0530 PM 06/30   43.94N/90.25W       
2 N IONIA                      30 MPH    0425 PM 06/30   43.07N/92.46W       
4 NNW RIDGEVILLE               30 MPH    0508 PM 06/30   43.94N/90.60W       
VIROQUA MUNICIPAL AIRPORT      29 MPH    0635 PM 06/30   43.58N/90.90W       
4 E NORDNESS                   29 MPH    0434 PM 06/30   43.25N/91.70W       
BLACK RIVER FALLS AREA AIRPORT 28 MPH    0435 PM 06/30   44.25N/90.86W       
2 S FAYETTE                    27 MPH    0310 PM 06/30   42.80N/91.80W       
SAINT ANSGAR                   25 MPH    0245 PM 06/30   43.37N/92.92W       
ROCKFORD                       25 MPH    0300 PM 06/30   43.05N/92.93W       
4 SSE ARLINGTON                25 MPH    0254 PM 06/30   42.69N/91.65W       
1 E MAUSTON                    25 MPH    0603 PM 06/30   43.80N/90.06W       
2 WSW GALESVILLE               25 MPH    0415 PM 06/30   44.07N/91.39W       
 
OBSERVATIONS ARE COLLECTED FROM A VARIETY OF SOURCES WITH VARYING
EQUIPMENT AND EXPOSURE. NOT ALL DATA LISTED ARE CONSIDERED OFFICIAL.

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