Severe Weather Summary from August 28th, 2016

Tornadoes:

Tornado - Hammond Township Polk County Date August 28. 2016 Time (Local) 8:00 - 8:03 PM CDT EF Rating EF-0 Est. Peak Winds 70 mph Path Length 0.75 miles Max Width 100 yards Injuries/Deaths 0 Summary:   This tornado was viewed from multiple directions touching down in open country of Hammond township. The tornado lasted 2 to 3 minutes over an area of open fields west of highway 9.   Track Map             Photo taken near Thompson, ND looking east southeast toward Beltrami, MN Credit: Jeff Makowski

Tornado - Northwest of Gary, MN Norman County Date August 28. 2016 Time (Local) 9:04 - 10:08 PM CDT EF Rating EF-2 Est. Peak Winds 115 mph Path Length 10 miles Max Width 400 yards Injuries/Deaths 0 Summary: The Norman County tornado developed near the Polk/Norman Countyline in northern Spring Creek township. It intermittently traveled south- southeastward to just northwest of Gary, MN, exhibiting multiple vortices, at times, based upon eyewitness reports. Hundreds of trees were uprooted, snapped, or damaged along the track. A barn was completely destroyed at one farmstead with a power pole snapped. A second uninhabited residence showed damage to portions of exterior walls in addition to significant tree damage across the property. In addition to the tornadic winds, numerous trees were downed as a result of outflow winds, especially east and south of the tornadic damage path. A roof of an old house in Gary was removed. Intermittent tree damage was observed south of Gary. Track Map   Picture multi-vortex tornado from Brandon Copic Northwest Gary, MN

The Enhanced Fujita (EF) Scale classifies tornadoes into the following categories:

EF0 Weak 65-85 mph	EF1 Moderate 86-110 mph	EF2 Significant 111-135 mph	EF3 Severe 136-165 mph	EF4 Extreme 166-200 mph	EF5 Catastrophic 200+ mph

Radar:

Close up radar imagery of the Polk/Norman county supercell from Sunday evening August 28th.

Approximately a one hour radar loop of the slow moving supercell which produced at least two tornadoes in Polk and Norman Counties Sunday evening.	4 Panel display showing the Classic Supercellular characteristics with a hook in the reflectivity image (top left), tight velocity couplet (top right) Bottom right shows the decreased values in the CC (correlation coefficient).

Storm Reports:

PRELIMINARY LOCAL STORM REPORT...SUMMARY
NATIONAL WEATHER SERVICE EASTERN ND/GRAND FORKS ND
234 PM CDT TUE AUG 30 2016

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

0625 PM     HAIL             3 NE HALMA              48.69N 96.55W
08/28/2016  E1.00 INCH       KITTSON            MN   PUBLIC

0802 PM     TORNADO          2 WSW GREENVIEW         47.61N 96.60W
08/28/2016  F0               POLK               MN   PUBLIC

            TOUCHDOWN. OBSERVED 6E OF NIELSVILLE MN...LOOKING
            NORTHEAST. ROPE TORNADO OCCURRED OVER OPEN COUNTRY IN
            HAMMOND TOWNSHIP FROM 800PM TO 803PM WITH A PATH LENGTH
            NEAR 0.75 MILES AND MAX WIDTH OF 100YDS.

0810 PM     TORNADO          4 E BELTRAMI            47.54N 96.44W
08/28/2016                   POLK               MN   TRAINED SPOTTER

            BRIEF TOUCHDOWN

0904 PM     TORNADO          6 NW GARY               47.43N 96.36W
08/28/2016  F2               NORMAN             MN   LAW ENFORCEMENT

            THIS TORNADO DEVELOPED NEAR THE POLK/NORMAN COUNTY LINE
            IN NORTHERN SPRING CREEK TOWNSHIP. IT INTERMITTENTLY
            TRAVELED SOUTH SOUTHEASTWARD TO JUST NORTHWEST OF GARY
            MN, EXHIBITING MULTIPLE VORTICES AT TIMES BASED ON
            EYEWITNESS REPORTS. HUNDREDS OF TREES WERE UPROOTED,
            SNAPPED, OR DAMAGED ALONG THE TRACK. A BARN WAS
            COMPLETELY DESTROYED AT ONE FARMSTEAD.

0911 PM     TORNADO          3 W FLAMING             47.46N 96.33W
08/28/2016                   NORMAN             MN   PUBLIC

            OBSERVED BETWEEN GARY AND FERTILE LOOKING NORTHWEST.

0937 PM     HAIL             FERTILE                 47.53N 96.29W
08/28/2016  M1.00 INCH       POLK               MN   911 CALL CENTER

0953 PM     HAIL             FERTILE                 47.53N 96.29W
08/28/2016  M1.00 INCH       POLK               MN   TRAINED SPOTTER

            ALSO 60 MPH WIND

0340 AM     HAIL             PARKERS PRAIRIE         46.15N 95.33W
08/29/2016  E1.75 INCH       OTTER TAIL         MN   TRAINED SPOTTER

            HAIL MOSTLY PEA AND DIME SIZE, BUT A FEW GOLFBALLS THROWN
            IN.

Rain Reports:

Below is a 24-hour radar rainfall estimate of the event ending at 12 PM on Monday, August 29th. The following graphic is zoomed into the Polk, Norman, and Mahnomen county areas where radar estimated up to six inches of rainfall was received.  These amounts are in addition to the rainfall received on Saturday, August 27th.  The graphics are then followed by actual rain gauge reports from across the area in text format.

Public Information Statement
National Weather Service Grand Forks ND
337 PM CDT Mon Aug 29 2016

...Rainfall Reports...

Location                     Amount    Time/Date       Lat/Lon              
Fertile MN 3 WSW  (Sandhill  5.85 in   0245 PM 08/29   47.51N/96.34W        
Fertile MN                   5.25 in   0505 AM 08/29   47.53N/96.28W        
Twin Valley MN               3.95 in   0800 AM 08/29   47.26N/96.26W        
Westbury MN 3 ESE            3.27 in   0700 AM 08/29   46.89N/95.84W        
Mahnomen MN 1 SE (Wild Rice  2.13 in   0245 PM 08/29   47.31N/95.95W        
Baudette MN 3 S (DNR)        2.07 in   0306 PM 08/29   48.67N/94.62W        
Waskish MN 4 NE (Tamarac R)  1.96 in   0230 PM 08/29   48.18N/94.51W        
Kelliher MN (DNR)            1.95 in   0307 PM 08/29   47.94N/94.45W        
Laporte MN 2 WNW             1.86 in   0700 AM 08/29   47.24N/94.81W        
Detroit Lakes MN (DNR)       1.83 in   0320 PM 08/29   46.85N/95.85W        
Deer Creek MN 1 W            1.76 in   0641 AM 08/29   46.38N/95.36W        
Deer Creek MN 0.0 SW         1.60 in   0800 AM 08/29   46.39N/95.32W        
Waskish MN (AP)              1.58 in   0652 AM 08/29   48.15N/94.53W        
Hoffman MN 3 S               1.47 in   0700 AM 08/29   45.78N/95.78W        
New York Mills MN            1.44 in   0730 AM 08/29   46.51N/95.38W        
Sebeka MN                    1.40 in   0736 AM 08/29   46.63N/95.08W        
Baudette MN (AP)             1.29 in   0653 AM 08/29   48.72N/94.61W        
Maple Bay MN 5 ESE           1.27 in   0700 AM 08/29   47.59N/96.13W        
Clementson MN (Rapid R)      1.26 in   0300 PM 08/29   48.69N/94.43W        
Wadena MN 13 E (Leaf R)      1.18 in   0300 PM 08/29   46.46N/94.84W        
Pennington MN 2 S (Knutson D 1.17 in   0300 PM 08/29   47.45N/94.48W        
Ada MN                       1.15 in   0705 AM 08/29   47.30N/96.52W        
Itasca MN (DNR)              1.12 in   0307 PM 08/29   47.24N/95.19W        
Bagley MN 23 S (Long Lost Lk 1.08 in   0700 AM 08/29   47.20N/95.42W        
Menahga MN                   1.01 in   0600 AM 08/29   46.76N/95.10W        
Ponsford MN 10 N             1.00 in   0318 PM 08/29   47.11N/95.41W        
Menahga MN 1 W               1.00 in   0700 AM 08/29   46.75N/95.14W        

Observations are collected from a variety of sources with varying
equipment and exposures. Not all data listed are considered official.