A broad low pressure system touched off periods of rain with scattered thunderstorms on Monday. Many locations did not receive significant rainfall, but storms with over 1-inch-per-hour rainfall rates persisted near Rockford and Lansing, which led to higher totals. Areas near Rockford received over 2 inches of rain, and areas between Portland and Lansing received 2.5 to 4.5 inches. Moderate street flooding and ponding of water was common in Lansing. Roads in some low spots had water levels approaching the roofs of cars. US-127 near Saginaw St was shut down for hours due to deep floodwaters and clogged storm drains.
A total of 3.77 inches was measured at Capital Region International Airport, which breaks the record for the most rainfall received in a calendar day in August. The old August record was 3.39 inches set on August 27, 2013. This was also the 6th most rain received on any calendar day at Lansing. The record for rainiest calendar day is 5.47 inches on June 6, 1905.
Radar animation from 10 AM to 2 PM August 10:
Radar-estimated rainfall totals:
Below is a list of rainfall and flood reports received on August 10:
PRELIMINARY LOCAL STORM REPORT...SUMMARY
NATIONAL WEATHER SERVICE GRAND RAPIDS MI
933 PM EDT MON AUG 10 2015
...TIME... ...EVENT... ...CITY LOCATION... ...LAT.LON...
...DATE... ....MAG.... ..COUNTY LOCATION..ST.. ...SOURCE....
..REMARKS..
1213 PM FLOOD 2 N LANSING 42.74N 84.55W
08/10/2015 INGHAM MI COUNTY OFFICIAL
3 VEHICLES STUCK IN WATER AT SHIAWASSEE AND
GRAND AVE.
1215 PM FLOOD 1 WNW EAST LANSING 42.74N 84.51W
08/10/2015 INGHAM MI COUNTY OFFICIAL
US 127 CLOSED DUE TO FLOODING NEAR SAGINAW
HWY.
1222 PM FLOOD 1 NW WAVERLY 42.75N 84.63W
08/10/2015 EATON MI TRAINED SPOTTER
FLOODED INTERSECTION AT STONEY POINT DRIVE
AND RILEY RIDGE DR. 6-12 INCHES OF STANDING
WATER.
1225 PM HEAVY RAIN 1 S WAVERLY 42.73N 84.62W
08/10/2015 M2.94 INCH EATON MI COCORAHS
RAINFALL DURATION 1 HOUR, 15 MINUTES. MINOR
FLOODING.
1230 PM FLOOD 1 NE LANSING 42.72N 84.54W
08/10/2015 INGHAM MI BROADCAST MEDIA
PENNSYLVANIA AVENUE IS FLOODED IN FRONT OF
POTTER PARK ZOO.
1230 PM HAIL 1 S OKEMOS 42.69N 84.41W
08/10/2015 M0.25 INCH INGHAM MI PUBLIC
MOST HAIL LESS THAN PEA SIZE.
1253 PM HEAVY RAIN 2 N EDGEMONT PARK 42.78N 84.59W
08/10/2015 M2.82 INCH CLINTON MI ASOS
2.82 INCHES IN 2 HOURS AT CAPITAL CITY
AIRPORT.
1257 PM FLOOD 2 N LANSING 42.74N 84.55W
08/10/2015 INGHAM MI PUBLIC
2 CARS PARTIALLY SUBMERGED NEAR SAGINAW HWY
AND CEDAR NEAR DOWNTOWN LANSING.
0137 PM HEAVY RAIN 1 W WAVERLY 42.74N 84.65W
08/10/2015 M4.00 INCH EATON MI CO-OP OBSERVER
0200 PM HEAVY RAIN 2 N EDGEMONT PARK 42.78N 84.59W
08/10/2015 M3.77 INCH CLINTON MI ASOS
TOTAL DAILY RAINFALL SO FAR AT CAPITAL CITY
AIRPORT (KLAN).
0200 PM HEAVY RAIN 1 SSW WAVERLY 42.72N 84.63W
08/10/2015 M3.27 INCH EATON MI COCORAHS
RAINFALL BETWEEN 7 AM AND 1:45 PM.
RESIDENTIAL ROAD PONDED WATER TO TOP OF CURB
DURING MOST INTENSE RAINFALL. COCORAHS
OBSERVER LANSING 3.9 WNW /MI-ET-3/
0200 PM HEAVY RAIN 3 ENE KENTWOOD 42.89N 85.54W
08/10/2015 M1.22 INCH KENT MI OFFICIAL NWS OBS
RAINFALL TOTAL SO FAR TODAY
0212 PM HEAVY RAIN 1 NE LANSING 42.73N 84.54W
08/10/2015 M2.52 INCH INGHAM MI AMATEUR RADIO
0230 PM HEAVY RAIN 4 NNW DANSVILLE 42.61N 84.34W
08/10/2015 M1.84 INCH INGHAM MI COCORAHS
2 HOUR TOTAL. COCORAHS OBSERVER MASON 5.8
ENE /MI-IH-34/
0230 PM HEAVY RAIN OKEMOS 42.71N 84.41W
08/10/2015 M3.07 INCH INGHAM MI PUBLIC
STORM TOTAL TODAY. 0.60 INCHES ALSO FELL
YESTERDAY FROM AN ISOLATED THUNDERSTORM.
0400 PM HEAVY RAIN SUNFIELD 42.76N 84.99W
08/10/2015 M4.10 INCH EATON MI TRAINED SPOTTER
STORM TOTAL
0500 PM HEAVY RAIN 2 NW GRAND LEDGE 42.77N 84.77W
08/10/2015 M4.58 INCH CLINTON MI BROADCAST MEDIA
STORM TOTAL
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