Northern Indiana

Weather Forecast Office

Flash flooding across portions of northwestern Indiana August 15 2016

Overview

A tropical air mass worked north out of the Gulf states as weak low pressure deepened and moved into the western Great Lakes. The high moisture content, combined with very efficient rainfall processes allowed for a period of widespread rain across the forecast area. As the main area moved north, additional stronger showers developed and moved over the same area, across northwestern Marshall county into much of St. Joseph County Indiana. Localized rain amounts exceeded 8 inches. In addition to the flooding, a low topped supercell raised havoc mainly across portions of central Indiana. The supercell moved into portions of Grant, Wabash and Huntington counties were numerous funnel clouds sighting were reported and recorded. More detail on all of these events can be found throughout the web page.

Flooding
Funnel Clouds
Photos & Video
Radar
Storm Reports
Rainfall
Environment

Flooding

Rainfall rates of 1 to 2 inches per hour over several hours caused rapid runoff into low areas, rivers and streams. Stormwater systems in South Bend and surrounding areas were quickly overwhelmed with widespread flooding and even occurrences of flash flooding as water levels quickly rose and sending several feet of water into some city streets, forcing at least a dozen water rescues.

Hydrographs


Kankakee River At Davis, IN	Dowagiac River at Sumnerville, MI

Rainfall Images


Area Map of 24 Hour Rainfall Totals	Zoomed in Map of Heaviest Rainfall	Percent of Normal

Low Topped Supercell and Funnel Clouds

NUMEROUS REPORTS...INCLUDING PICTURE AND VIDEO FOOTAGE...HAVE BEEN SHARED OF A WELL DEVELOPED FUNNEL CLOUD NEAR
THE GRANT/HOWARD/MIAMI COUNTY LINE...NORTHWEST OF SWAYZEE. STAFF FROM GRANT AND MIAMI COUNTY EMA AS WELL AS THE 
NWS DID A ROADSIDE SURVEY IN THE AREA BETWEEN SWAYZEE...CONVERSE AND JALAPA. A BARN ON EAST COUNTY ROAD 300 N 
IN HOWARD COUNTY...NEAR THE GRANT/HOWARD COUNTY LINE...SUFFERED MINOR DAMAGE. AREAL FOOTAGE FROM WTHR SHOWED A 
BEAN FIELD SUFFERING DAMAGE AS WELL TO THE NORTHEAST OF THE BARN. INFORMATION FROM THE PILOT...EMA OFFICIALS 
AND THE NWS SUGGESTS THAT THE DAMAGE ENDED NEAR THE COUNTY LINE. WHILE THE FUNNEL WAS IN CLOSE PROXIMITY TO THE 
GROUND...CURRENT INDICATIONS ARE THAT THERE WAS NO TOUCHDOWN IN GRANT COUNTY.

THE CELL CONTINUED NORTHEAST AND RAPIDLY INTENSIFIED AS IT APPROACHED ANDREWS IN HUNTINGTON COUNTY. EMERGENCY 
MANAGEMENT OFFICIALS...SPOTTERS AND A OFF DUTY NWS METEOROLOGIST WERE IN THE AREA. WHILE FUNNEL WERE STILL 
OBSERVED...THERE HAS BEEN NO REPORTS OF DAMAGE.

Photos & Video:

Flooding: South Bend


Sink Hole near Residence Source: St. Joseph County EMA	Severe Street Flooding Source: St. Joseph County EMA	Partial Washout Source: St. Joseph County EMA

Flooding: Starke County


Bass Lake Source: Christine Zaremba	Bass Lake Source: Christine Zaremba

Radar:

Header

Radar Loop

Storm Reports

PRELIMINARY LOCAL STORM REPORT...SUMMARY

NATIONAL WEATHER SERVICE NORTHERN INDIANA

327 PM EDT TUE AUG 16 2016

..TIME... ...EVENT... ...CITY LOCATION... ...LAT.LON...

..DATE... ....MAG.... ..COUNTY LOCATION..ST.. ...SOURCE....

..REMARKS..

1004 AM FLOOD 2 NNE INWOOD 41.34N 86.19W

08/16/2016 MARSHALL IN EMERGENCY MNGR

REPORTS OF SEVERAL ROAD CLOSURES ACROSS

MARSHALL COUNTY. SPECIFICALLY TAMARACK RD

NORTH OF US 6, 6TH RD WEST OF QUEEN RD, 5TH

RD BETWEEN HAWTHORN RD AND GRAPE RD, 1B RD

AT OAK RD.

0100 AM FLASH FLOOD SOUTH BEND 41.68N 86.27W

08/16/2016 ST. JOSEPH IN BROADCAST MEDIA

NUMEROUS ROADS IMPACTED BY HIGH WATER WITH

AT LEAST 12 CLOSED. VEHICLES STRANDED WITH

SOME RESCUES NEEDED DURING THE EVENT. AT

LEAST 2 HOMES SUFFERED FOUNDATION DAMAGE. .

1255 AM NON-TSTM WND DMG 1 ENE MILFORD 41.41N 85.83W

08/16/2016 KOSCIUSKO IN NWS EMPLOYEE

2-3 FT DIAMETER HEALTHY OAK TREE SNAPPED

OFF. .

1205 AM FLASH FLOOD 1 NW ROSELAND 41.72N 86.26W

08/16/2016 ST. JOSEPH IN BROADCAST MEDIA

MULTIPLE REPORTS OF ROAD CLOSURES AND

STRANDED VEHICLES/VEHICLE RESCUES IN THE

SOUTH BEND VICINITY.

1015 PM FLOOD 2 SW LA PORTE 41.59N 86.73W

08/15/2016 LA PORTE IN COCORAHS

SOME LOW WATER CROSSINGS FLOODED.

Rain Reports

NATIONAL WEATHER SERVICE NORTHERN INDIANA  
320 PM EDT TUE AUG 16 2016  
   
..RAINFALL REPORTS  
  
LOCATION                     AMOUNT    TIME/DATE       LAT/LON                
   
INDIANA  
  
   
..ADAMS COUNTY  
  
DECATUR 1N                   0.51 IN   0700 AM 08/16   40.85N/84.93W          
   
..ALLEN COUNTY  
  
2 NE FORT WAYNE              0.68 IN   0654 AM 08/16   41.10N/85.11W          
FORT WAYNE 1.3 NNW           0.65 IN   0608 AM 08/16   41.09N/85.15W          
1 N ROLLING HILLS            0.59 IN   0800 AM 08/16   41.05N/85.27W          
2 ESE HUNTERTOWN             0.58 IN   0800 AM 08/16   41.21N/85.12W          
4 N NEW HAVEN                0.55 IN   0700 AM 08/16   41.13N/85.03W          
2 WNW LEO-CEDARVILLE         0.52 IN   0755 AM 08/16   41.22N/85.06W          
   
..BLACKFORD COUNTY  
  
HARTFORD CITY 4ESE           0.98 IN   0800 AM 08/16   40.44N/85.29W          
HARTFORD CITY                0.84 IN   0700 AM 08/16   40.45N/85.37W                
3 SW ROLL                    0.62 IN   0700 AM 08/16   40.51N/85.43W          
   
..CASS COUNTY  
  
2 NE DUNKIRK                 1.15 IN   0800 AM 08/16   40.78N/86.37W          
YOUNG AMERICA                1.12 IN   0800 AM 08/16   40.57N/86.33W          
(WA9TTB)GALVESTON 1.0 ESE    1.04 IN   0700 AM 08/16   40.57N/86.17W          
   
..DE KALB COUNTY  
  
GARRETT                      1.51 IN   0810 AM 08/16   41.34N/85.13W          
1 S GARRETT                  1.20 IN   0611 AM 08/16   41.33N/85.13W          
BUTLER 1SE                   0.81 IN   0855 AM 08/16   41.41N/84.85W          
   
..ELKHART COUNTY  
  
1 SE JIMTOWN                 3.98 IN   0800 AM 08/16   41.62N/86.01W          
2 WSW MIDDLEBURY             3.91 IN   0700 AM 08/16   41.65N/85.75W          
2 WNW GOSHEN                 3.85 IN   1017 AM 08/16   41.60N/85.88W          
2 NNE WAKARUSA               3.64 IN   0700 AM 08/16   41.57N/85.99W          
WAKARUSA                     3.59 IN   0700 AM 08/16   41.53N/86.02W          
1 ENE GOSHEN                 3.58 IN   0800 AM 08/16   41.58N/85.81W          
2 WSW GOSHEN                 3.54 IN   0700 AM 08/16   41.56N/85.88W          
1 WNW JIMTOWN                3.43 IN   0600 AM 08/16   41.64N/86.04W          
1 WSW GOSHEN                 3.39 IN   0700 AM 08/16   41.57N/85.85W          
1 ENE ELKHART                3.36 IN   0243 PM 08/16   41.69N/85.94W          
4 SSW BRISTOL                3.35 IN   0448 AM 08/16   41.67N/85.85W          
1 N WATERFORD MILLS          3.00 IN   0500 AM 08/16   41.56N/85.83W          
1 SW NEW PARIS               2.87 IN   0700 AM 08/16   41.49N/85.84W          
3 NE OSCEOLA                 2.76 IN   0250 PM 08/16   41.71N/86.04W          
MILLERSBURG                  2.12 IN   0700 AM 08/16   41.52N/85.70W          
SYRACUSE 4.4 NNW             2.02 IN   0700 AM 08/16   41.48N/85.77W          
GOSHEN MUNICIPAL AIRPORT     1.96 IN   0753 AM 08/16   41.53N/85.79W          
   
..FULTON COUNTY  
  
ROCHESTER                    1.50 IN   0700 AM 08/16   41.07N/86.21W          
2 NW ROCHESTER               1.24 IN   0700 AM 08/16   41.09N/86.23W          
   
..GRANT COUNTY  
  
2 E JALAPA                   0.85 IN   0800 AM 08/16   40.62N/85.71W          
FAIRMOUNT                    0.76 IN   0700 AM 08/16   40.42N/85.64W          
3 NW SHAMROCK LAKES          0.74 IN   0700 AM 08/16   40.45N/85.45W          
(KB9CRA)GAS CITY 0.3 N       0.72 IN   0700 AM 08/16   40.49N/85.61W          
MARION 2N                    0.67 IN   0718 AM 08/16   40.58N/85.66W          
1 SE VAN BUREN               0.56 IN   0656 AM 08/16   40.60N/85.49W          
GRANT COUNTY MUNICIPAL APT   0.54 IN   0755 AM 08/16   40.48N/85.68W          
HANFIELD                     0.54 IN   0600 AM 08/16   40.60N/85.59W          
   
..HUNTINGTON COUNTY  
  
HUNTINGTON                   0.75 IN   0700 AM 08/16   40.88N/85.51W          
(WA9QGL)ANDREWS 3.2 ESE      0.75 IN   0700 AM 08/16   40.84N/85.55W          
1 ENE WARREN                 0.55 IN   0700 AM 08/16   40.70N/85.40W          
   
..JAY COUNTY  
  
1 W BOUNDARY CITY            0.87 IN   0700 AM 08/16   40.35N/84.95W          
COLLEGE CORNER               0.73 IN   0700 AM 08/16   40.40N/84.98W          
1 SSW BLAINE                 0.71 IN   0700 AM 08/16   40.39N/85.06W          
   
..KOSCIUSKO COUNTY  
  
LAKE WAWASEE                 2.23 IN   0800 AM 08/16   41.41N/85.70W          
MILFORD                      2.01 IN   0700 AM 08/16   41.42N/85.85W          
SYRACUSE                     1.70 IN   0700 AM 08/16   41.41N/85.76W          
2 N NORTH WEBSTER            1.57 IN   0800 AM 08/16   41.35N/85.70W          
JAMES LAKE                   1.50 IN   0700 AM 08/16   41.31N/85.72W          
LEESBURG                     1.48 IN   0600 AM 08/16   41.33N/85.85W          
1 NNW WARSAW                 1.36 IN   0745 AM 08/16   41.25N/85.86W          
2 WSW SYRACUSE               1.20 IN   0247 PM 08/16   41.41N/85.79W          
WINONA LAKE                  1.18 IN   0730 AM 08/16   41.21N/85.80W          
1 E WINONA LAKE              1.14 IN   0600 AM 08/16   41.22N/85.79W          
TIPPECANOE LAKE              1.01 IN   0250 PM 08/16   41.33N/85.77W          
2 SW WARSAW                  1.00 IN   0226 PM 08/16   41.21N/85.87W          
1 E CLAYPOOL                 0.94 IN   0700 AM 08/16   41.13N/85.86W                       
   
..LA PORTE COUNTY  
  
FISH LAKE                    6.23 IN   1100 AM 08/16   41.57N/86.55W          
1 W HANNA                    5.48 IN   0900 AM 08/16   41.41N/86.81W          
KINGSBURY                    5.35 IN   0800 AM 08/16   41.53N/86.70W          
KINGSBURY 1N                 5.35 IN   0730 AM 08/16   41.54N/86.70W          
HANNA                        5.32 IN   0900 AM 08/16   41.41N/86.78W          
2 ESE LA PORTE               5.27 IN   0700 AM 08/16   41.59N/86.68W          
WESTVILLE 4.7 ESE            5.05 IN   1034 AM 08/16   41.51N/86.83W          
1 SW LA PORTE                4.97 IN   0710 AM 08/16   41.59N/86.73W          
2 SW LA PORTE                4.92 IN   0900 AM 08/16   41.59N/86.74W          
LA PORTE                     4.86 IN   0755 AM 08/16   41.57N/86.73W          
1 E HANNA                    4.71 IN   0800 AM 08/16   41.41N/86.76W          
(KA9WNQ)LA PORTE 1.7 SW      4.70 IN   0715 AM 08/16   41.59N/86.74W          
WANATAH 2 WNW (PPAC)         4.63 IN   0800 AM 08/16   41.44N/86.93W          
3 NW LA CROSSE               4.53 IN   0800 AM 08/16   41.35N/86.93W          
1 W LA CROSSE                4.20 IN   0800 AM 08/16   41.32N/86.92W          
2 ENE WANATAH                3.71 IN   0800 AM 08/16   41.44N/86.83W          
1 NW LA PORTE                3.50 IN   0700 AM 08/16   41.62N/86.73W          
1 ESE HESSTON                3.50 IN   0400 AM 08/16   41.75N/86.64W          
2 WSW SPRINGVILLE            3.42 IN   0730 AM 08/16   41.67N/86.78W          
1 E WATERFORD                3.24 IN   0800 AM 08/16   41.67N/86.81W          
   
..LAGRANGE COUNTY  
  
2 E BRUSHY PRAIRIE           2.40 IN   0710 AM 08/16   41.64N/85.20W          
1 ENE LAGRANGE               2.28 IN   0500 AM 08/16   41.65N/85.40W          
2 WNW ELMIRA                 1.93 IN   0700 AM 08/16   41.60N/85.24W          
BRUSHY PRAIRIE               1.77 IN   0600 AM 08/16   41.65N/85.23W          
   
..MARSHALL COUNTY  
  
PLYMOUTH                     3.58 IN   0540 AM 08/16   41.34N/86.34W          
1 N TWIN LAKES               3.18 IN   0500 AM 08/16   41.33N/86.36W          
BURR OAK                     3.00 IN   0800 AM 08/16   41.26N/86.42W          
LAKE OF THE WOODS            2.90 IN   1000 AM 08/16   41.43N/86.23W                     
BOURBON 0.4 S                2.31 IN   0600 AM 08/16   41.29N/86.12W          
2 W MENTONE                  1.23 IN   0253 PM 08/16   41.18N/86.08W          
   
..MIAMI COUNTY  
  
1 WNW DEEDSVILLE             1.06 IN   0700 AM 08/16   40.92N/86.12W          
1 SSW GRISSOM AFB            0.90 IN   0758 AM 08/16   40.65N/86.15W          
PERU                         0.87 IN   0615 AM 08/16   40.76N/86.07W          
1 ENE DENVER                 0.86 IN   0700 AM 08/16   40.88N/86.06W          
   
..NOBLE COUNTY  
  
3 N KENDALLVILLE             2.28 IN   0700 AM 08/16   41.49N/85.26W          
2 E ROME CITY                1.51 IN   0700 AM 08/16   41.50N/85.31W          
3 NE AVILLA                  1.48 IN   0239 PM 08/16   41.40N/85.20W          
KENDALLVILLE                 1.48 IN   0700 AM 08/16   41.44N/85.26W          
2 SW CROMWELL                1.41 IN   1128 AM 08/16   41.38N/85.65W          
2 E ALBION                   1.24 IN   0830 AM 08/16   41.40N/85.37W          
ALBION 3.7 S                 1.13 IN   0930 AM 08/16   41.34N/85.42W          
1 E BIG LAKE                 1.01 IN   0700 AM 08/16   41.28N/85.47W                 
   
..PULASKI COUNTY  
  
FRANCESVILLE                 5.72 IN   0900 AM 08/16   40.98N/86.89W          
MEDARYVILLE 5N               5.33 IN   0400 AM 08/16   41.16N/86.90W          
4 NW PULASKI                 3.58 IN   0800 AM 08/16   41.03N/86.70W          
   
..ST. JOSEPH COUNTY  
  
WALKERTON                    10.45 IN  0800 AM 08/16   41.46N/86.48W          
3 SW SOUTH BEND              10.00 IN  0900 AM 08/16   41.64N/86.31W    
2 WNW GULIVOIRE PARK         9.95 IN   0800 AM 08/16   41.63N/86.29W          
3 NE CHAIN-O-LAKES           9.10 IN   0320 AM 08/16   41.73N/86.34W          
2 NW TEEGARDEN               8.95 IN   0630 AM 08/16   41.49N/86.41W          
2 N TEEGARDEN                8.82 IN   0700 AM 08/16   41.50N/86.39W          
GEORGETOWN                   8.81 IN   1100 AM 08/16   41.73N/86.23W          
1 E INDIAN VILLAGE           8.78 IN   1100 AM 08/16   41.71N/86.20W          
SOUTH BEND INTERNATIONAL AP  8.49 IN   0754 AM 08/16   41.71N/86.32W          
GRANGER                      8.48 IN   0813 AM 08/16   41.74N/86.14W          
1 ENE GULIVOIRE PARK         8.04 IN   0600 AM 08/16   41.62N/86.22W          
SOUTH BEND 5.9 W             7.91 IN   0700 AM 08/16   41.67N/86.38W          
2 ESE MISHAWAKA              7.74 IN   0800 AM 08/16   41.65N/86.13W                 
SOUTH BEND WWTP              7.32 IN   0600 AM 08/16   41.72N/86.27W          
1 NW OSCEOLA                 7.01 IN   0800 AM 08/16   41.68N/86.10W                      
2 SW BERTRAND                6.23 IN   0248 PM 08/16   41.75N/86.30W                    
2 S NEW CARLISLE             4.18 IN   0251 PM 08/16   41.66N/86.51W                
   
..STARKE COUNTY  
  
NORTH JUDSON 3S              10.24 IN  0800 AM 08/16   41.17N/86.76W        
KNOX WWTP                    8.23 IN   0800 AM 08/16   41.31N/86.63W          
2 NE DENHAM                  7.45 IN   0800 AM 08/16   41.18N/86.68W          
OBER                         6.40 IN   0652 AM 08/16   41.27N/86.52W          
3 ESE SAN PIERRE             6.05 IN   0725 AM 08/16   41.18N/86.83W          
SAN PIERRE 4.1 NNE           4.20 IN   0800 AM 08/16   41.25N/86.85W          
     
..STEUBEN COUNTY  
  
2 ENE CROOKED LAKE           2.74 IN   0545 AM 08/16   41.70N/84.99W          
ANGOLA                       2.44 IN   0700 AM 08/16   41.64N/84.99W          
1 S ANGOLA                   2.30 IN   0600 AM 08/16   41.62N/85.00W          
HUDSON                       2.21 IN   0716 AM 08/16   41.53N/85.08W                
1 W GOLDEN LAKE              2.03 IN   0700 AM 08/16   41.60N/85.09W          
METZ                         1.56 IN   0700 AM 08/16   41.61N/84.84W          
1 E HAMILTON                 1.24 IN   0700 AM 08/16   41.53N/84.89W          
   
..WABASH COUNTY  
  
WABASH                       0.95 IN   0600 AM 08/16   40.80N/85.83W          
LA FONTAINE 1.1 NW           0.92 IN   0600 AM 08/16   40.68N/85.74W          
WABASH 1.5 SW                0.90 IN   0700 AM 08/16   40.78N/85.84W          
SOMERSET                     0.60 IN   0245 PM 08/16   40.66N/85.81W          
   
..WELLS COUNTY  
  
1 NNE BLUFFTON               0.77 IN   0700 AM 08/16   40.76N/85.16W          
CRAIGVILLE 2.7 NW            0.71 IN   0800 AM 08/16   40.80N/85.13W          
1 E MURRAY                   0.71 IN   0700 AM 08/16   40.79N/85.17W          
BLUFFTON--MAIN ST. BRIDGE    0.59 IN   0712 AM 08/16   40.74N/85.17W          
   
..WHITE COUNTY  
  
MONON                        4.42 IN   0245 PM 08/16   40.86N/86.88W          
CHALMERS 5W                  3.93 IN   0600 AM 08/16   40.67N/86.95W          
1 WNW INDIANA BEACH          3.54 IN   0240 PM 08/16   40.80N/86.79W          
1 WSW INDIANA BEACH          2.96 IN   0720 AM 08/16   40.79N/86.79W          
MONTICELLO 5.5 NNW           2.90 IN   0700 AM 08/16   40.82N/86.79W          
NORWAY                       2.85 IN   0245 PM 08/16   40.78N/86.76W          
MONTICELLO                   2.76 IN   0600 AM 08/16   40.76N/86.76W          
   
..WHITLEY COUNTY  
  
1 ENE PEABODY                1.27 IN   0600 AM 08/16   41.09N/85.47W          
CHURUBUSCO                   1.10 IN   0144 PM 08/16   41.23N/85.32W          
1 NNW TRI-LAKES              1.09 IN   0700 AM 08/16   41.24N/85.49W                  
   
MICHIGAN  
  
   
..BERRIEN COUNTY  
  
NILES                        7.90 IN   0730 AM 08/16   41.83N/86.25W          
2 W NILES                    6.67 IN   0800 AM 08/16   41.84N/86.30W          
BERTRAND                     6.25 IN   0759 AM 08/16   41.77N/86.26W          
1 ESE BUCHANAN               5.37 IN   0700 AM 08/16   41.82N/86.34W          
1 WNW BUCHANAN               5.17 IN   0700 AM 08/16   41.84N/86.39W          
NEW BUFFALO 0.4 WNW          2.79 IN   0700 AM 08/16   41.79N/86.75W          
STEVENSVILLE 0.9 S           2.72 IN   0700 AM 08/16   42.00N/86.52W          
THREE OAKS                   2.70 IN   1000 AM 08/16   41.80N/86.61W          
WATERVLIET                   2.40 IN   0700 AM 08/16   42.20N/86.25W          
1 W FAIR PLAIN               2.39 IN   0700 AM 08/16   42.08N/86.48W          
FAIR PLAIN                   2.20 IN   0700 AM 08/16   42.08N/86.46W          
SAINT JOSEPH                 2.15 IN   0245 PM 08/16   42.10N/86.49W          
SAINT JOSEPH                 2.00 IN   0720 AM 08/16   42.10N/86.49W          
BENTON HARBOR AIRPORT        2.00 IN   0753 AM 08/16   42.13N/86.43W          
MILLBURG                     0.77 IN   0249 PM 08/16   42.12N/86.33W          
   
..BRANCH COUNTY  
  
3 WSW UNION CITY             5.00 IN   1149 AM 08/16   42.06N/85.19W          
1 SSW KINDERHOOK             4.40 IN   0700 AM 08/16   41.78N/85.01W          
QUINCY 0.1 SSW               3.32 IN   0700 AM 08/16   41.94N/84.88W          
   
..CASS COUNTY  
  
BARRON LAKE                  7.01 IN   0900 AM 08/16   41.84N/86.18W          
2 NW GRANGER                 6.14 IN   0246 PM 08/16   41.77N/86.17W          
1 ESE MAGICIAN LAKE          4.18 IN   0708 AM 08/16   42.06N/86.14W          
   
..HILLSDALE COUNTY  
  
LITCHFIELD                   3.95 IN   0700 AM 08/16   42.05N/84.75W          
3 NW NORTH ADAMS             3.33 IN   0700 AM 08/16   42.01N/84.56W          
MOSCOW 1.0 NE                3.10 IN   0600 AM 08/16   42.06N/84.50W          
HILLSDALE                    3.08 IN   0800 AM 08/16   41.94N/84.64W          
HILLSDALE MUNICIPAL AIRPORT  2.01 IN   0755 AM 08/16   41.92N/84.59W          
JEROME                       1.81 IN   0232 PM 08/16   42.02N/84.46W          
   
..ST. JOSEPH COUNTY  
  
1 E CONSTANTINE              3.90 IN   0745 AM 08/16   41.84N/85.63W          
2 SSW KLINGER LAKE           3.90 IN   0700 AM 08/16   41.77N/85.55W          
STURGIS                      2.10 IN   0755 AM 08/16   41.81N/85.44W          
   
OHIO  
  
   
..ALLEN COUNTY  
  
LIMA                         1.34 IN   0220 PM 08/16   40.73N/84.12W          
ELIDA                        0.62 IN   0700 AM 08/16   40.77N/84.20W          
1 WSW SLABTOWN               0.61 IN   0700 AM 08/16   40.77N/84.08W          
LIMA ALLEN COUNTY AIRPORT    0.53 IN   0749 AM 08/16   40.71N/84.02W          
2 SSW RUSHMORE               0.53 IN   0253 PM 08/16   40.83N/84.26W          
   
..DEFIANCE COUNTY  
  
DEFIANCE 9.4 NE              0.70 IN   0600 AM 08/16   41.38N/84.24W          
   
..FULTON COUNTY  
  
4 NW TEDROW                  0.64 IN   0700 AM 08/16   41.65N/84.25W          
   
..HENRY COUNTY  
  
GALLUP                       0.89 IN   0700 AM 08/16   41.46N/84.15W          
NAPOLEON 1NE                 0.82 IN   0900 AM 08/16   41.40N/84.11W          
NAPOLEON                     0.74 IN   0800 AM 08/16   41.39N/84.14W          
3 SE MCCLURE                 0.60 IN   0700 AM 08/16   41.33N/83.91W          
3 S NAPOLEON                 0.50 IN   0740 AM 08/16   41.34N/84.12W          
   
..PAULDING COUNTY  
  
1 NW OAKWOOD                 0.97 IN   0237 PM 08/16   41.11N/84.40W          
GROVER HILL                  0.92 IN   0700 AM 08/16   41.02N/84.48W          
   
..WILLIAMS COUNTY  
  
1 E LAKE SENECA              1.25 IN   0800 AM 08/16   41.69N/84.64W          
2 S PIONEER                  0.92 IN   0700 AM 08/16   41.64N/84.55W          
ALVORDTON                    0.87 IN   0700 AM 08/16   41.67N/84.42W          
  
OBSERVATIONS ARE COLLECTED FROM A VARIETY OF SOURCES WITH VARYING  
EQUIPMENT AND EXPOSURES. NOT ALL DATA LISTED ARE CONSIDERED OFFICIAL.

Environment

ALL MAPS ARE FROM 8 PM EDT 8/15 UNLESS OTHERWISE NOTED

Deepening low pressure was located over SW Illinois. Extremely high, tropical based moisture was in place across the forecast area. Precipitable waters, a measure of the total water content of the atmosphere, were in excess of 2 inches as shown in Figure 4. Figure 5 shows the strong and deep moisture transport straight out of the Gulf coast. Surface Based CAPE (Figure 6) was relatively low over the forecast area in comparison to where the supercell initiated and produced the most tornadoes. Lifted Condensation Levels (LCLs) were extremely low as shown in Figure 7 with near ground cloud bases and the lowest 1 km of the atmosphere was characterized by Storm relative Helicity of over 200. This allowed for persistent mesocyclones and weak tornadic production.


Figure 1: Surface Map	Figure 2: 850 mb Map	Figure 3: 500 mb Map


Figure 4: Precipitable Water	Figure 5: 850 mb Moisture Transport	Figure 6: Surface Based CAPE


Figure 7: Lifted Condensation Levels	Figure 8: 0-1 km Storm Relative Helicity	Figure 9: Rotational Track

SPC and WPC Products


SPC Day 1 Outlook at 4 pm EDT	Mesoscale Precip Discussion #1	Mesoscale Precip Discussion #2

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