Severe Weather and Heavy Rain July 25-26

During the evening hours on Wednesday, July 25th, and through the pre-dawn hours on Thursday, July 26th, there was a period of thunderstorms that brought some severe weather to the area along with some flooding.

The event started out as a lone thunderstorm developed across East Central Wisconsin around 7 pm EDT on Wednesday the 25th. Below is a loop showing the initiation of the storms:

The storms exploded into a rather solid line fairly quickly. This occurred because a lot of heat and humidity was being moved into the area behind a warm front that was moving north through the area. Some locations saw temperatures sit in the 70s to lower 80s through mid afternoon, before temperatures shot up into the low to mid 90s early in the evening. Dew points also shot up into the 70s, which is very humid air. 

The storms fed off of all of the heat and humidity, and became organized. The most organized area of storms moved out of Wisconsin, and across Mason and Oceana counties. during the mid-evening hours. Below is a radar loop of this time period.

Weather equipment at Big Sable Point just north of Ludington recorded a wind gust of 74 mph as the line of storms moved through. A plexiglass window at Big Sable Lighthouse was blown in due to the winds. Some additional damage occurred through the late evening hours. Estimates of around 100 trees were blown down near the Clare/Roscommon county line.

Once the initial line of storms diminished a bit toward and after midnight on the 26th, additional storms developed and affected the area. Below is a radar loop of the storms for the remainder of the night.

In addition to the severe weather, heavy rainfall occurred up north along the U.S.-10 corridor as storms continued to affect the same areas with heavy downpours. The highest rainfall amounts occurred in Clare county. Below is an image of doppler radar rainfall estimates from Wednesaday night.

Below is a listing of all the heavy rainfall reports, and severe weather reports:

PRELIMINARY LOCAL STORM REPORT...SUMMARY  
NATIONAL WEATHER SERVICE GRAND RAPIDS MI  
1109 AM EDT THU JUL 26 2012  
   
.TIME... ...EVENT... ...CITY LOCATION... ...LAT.LON
 
   
.DATE... ....MAG.... ..COUNTY LOCATION..ST.. ...SOURCE.
 
 
..REMARKS..  
 
1000 PM TSTM WND DMG 10 W MEREDITH 44.13N 84.81W  
07/25/2012 CLARE MI COUNTY OFFICIAL  
 
DOZENS OF TREES DOWN IN AREA.  
 
1000 PM TSTM WND DMG 6 N HARRISON 44.11N 84.80W  
07/25/2012 CLARE MI LAW ENFORCEMENT  
 
TREES DOWN IN AREA.  
 
1010 PM TSTM WND GST LUDINGTON 43.96N 86.45W  
07/25/2012 M50.00 MPH MASON MI BROADCAST MEDIA  
 
1010 PM TSTM WND GST 6 WNW LUDINGTON 43.98N 86.56W  
07/25/2012 M54.00 MPH LMZ849 MI BUOY  
 
U GLOS STATION 45024  
 
1010 PM TSTM WND GST LUDINGTON 43.96N 86.45W  
07/25/2012 M66.00 MPH MASON MI BROADCAST MEDIA  
 
MEASURED BY VIEWER. MANY TREES DOWN AND WIRES.  
 
1014 PM TSTM WND GST 2 E LUDINGTON 43.96N 86.41W  
07/25/2012 M45.00 MPH MASON MI AWOS  
 
1015 PM TSTM WND DMG SE MARION 44.10N 85.14W  
07/25/2012 OSCEOLA MI LAW ENFORCEMENT  
 
NUMEROUS TREES AND WIRES DOWN.  
 
1040 PM TSTM WND DMG SHELBY 43.61N 86.36W  
07/25/2012 OCEANA MI BROADCAST MEDIA  
 
WIRES DOWN.  
 
1120 PM TSTM WND DMG FARWELL 43.84N 84.87W  
07/25/2012 CLARE MI TRAINED SPOTTER  
 
TREE ON WIRE. WIRE ON FIRE.  
 
1123 PM TSTM WND DMG LAKE GEORGE 43.96N 84.94W  
07/25/2012 CLARE MI TRAINED SPOTTER  
 
TREE DOWN ON HOUSE.  
 
1123 PM TSTM WND DMG 3 E BLANCHARD 43.52N 85.02W  
07/25/2012 ISABELLA MI TRAINED SPOTTER  
 
TREES DOWN IN YARD  
 
1130 PM TSTM WND DMG SW CLARE 43.82N 84.77W  
07/25/2012 CLARE MI TRAINED SPOTTER  
 
TREE DOWN ON HOUSE.  
 
1155 PM TSTM WND DMG MOUNT PLEASANT 43.60N 84.77W  
07/25/2012 ISABELLA MI 911 CALL CENTER  
 
ISABELLA COUNTY CENTRAL DISPATCH REPORTED A FEW TREES AND  
WIRES DOWN IN MT PLEASANT AND SHEPHERD. TIME ESTIMATED.  
 
1211 AM HAIL MOUNT PLEASANT 43.60N 84.77W  
07/26/2012 E0.75 INCH ISABELLA MI TRAINED SPOTTER  
 
1230 AM TSTM WND DMG BRECKENRIDGE 43.41N 84.48W  
07/26/2012 GRATIOT MI 911 CALL CENTER  
 
GRATIOT COUNTY CENTRAL DISPATCH HAD A COUPLE REPORTS OF  
POWER LINES DOWN AND TREES DOWN IN THE NORTHEAST PART OF  
THE COUNTY. TIME ESTIMATED.  
 
0640 AM HEAVY RAIN BRECKENRIDGE 43.41N 84.48W  
07/26/2012 M1.60 INCH GRATIOT MI TRAINED SPOTTER  
 
RAIN SINCE MIDNIGHT TONIGHT. PEAK GUST OF 33MPH RECORDED  
AT 1220 AM EDT.  
 
0724 AM HEAVY RAIN 3 SW MERRILL 43.38N 84.37W  
07/26/2012 M2.30 INCH GRATIOT MI TRAINED SPOTTER  
 
OVERNIGHT TOTAL RAINFALL.  
 
0754 AM HEAVY RAIN 1 W LONG LAKE HEIGHTS 44.10N 84.79W  
07/26/2012 M5.30 INCH CLARE MI PUBLIC  
 
GENERAL PUBLIC REPORTED 5.3 INCHES OF RAINFALL TO 9 AND  
10 BROADCAST MEDIA. OBSERVER LIVED ALONG LONG LAKE ROAD  
NEAR US-127 IN FROST TOWNSHIP.  
 
0858 AM HEAVY RAIN LUDINGTON STATE PARK 44.03N 86.50W  
07/26/2012 M2.50 INCH MASON MI EMERGENCY MNGR  
 
OVERNIGHT TOTAL RAINFALL REPORTED FROM THE LUDINGTON  
STATE PARK.  
 
0913 AM HEAVY RAIN 1 NW BANGOR 42.33N 86.13W  
07/26/2012 M1.23 INCH VAN BUREN MI PUBLIC  
 
TOTAL RAINFALL OVERNIGHT.  


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