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Storm Moving through the South; Pacific Storm to Impact the West this Weekend

A storm is expected to develop over the southern High Plains today and track to the Mid-Atlantic through Friday with showers and thunderstorms. On the northern edge, snow, ice, and/or a wintry mix is possible over the central Plains. A significant storm is expected to arrive late Friday through the weekend with rain, heavy mountain snow, and gusty winds for much of the West. Read More >

Overview

A strong upper level storm system overspread the region during the afternoon of July 20th resulting in rapid scattered thunderstorm development across northwest Indiana and southwest Lower Michigan. These storms increased in coverage as they moved across the remainder of northern Indiana during the afternoon and early evening. Pockets of damaging wind gusts were observed with the stronger storms, along with localized flooding. The thunderstorms eventually weakened across northwest Ohio where earlier day storms resulted in more stable conditions.

Tornadoes:             Page will be updated as new information becomes available

Tornado - LaFontaine

Wabash County, IN

Date July 20th, 2018
Time (Local) 3:14 - 3:15 PM ET
EF Rating 0
Est. Peak Winds 70 mph
Path Length 0.8 mile
Max Width 25 yards
Injuries/Deaths 0

Summary:

A tornado touched down north of the intersection of E CR 700 S and S CR 390 E where three trees were uprooted, several tree branches were broken and a roof was removed from an outbuilding. The tornado continued northeast, cross S America Road where trees were uprooted and tree limbs broken at a residence where it lifted. Public Information Statement

Track Map

Track Map EF-Scale

Downloadable KMZ File

 

Tornado - Bremen
Marshall County, IN

Date July 20th, 2018
Time (Local) 1:53-1:55 PM ET
EF Rating 0
Est. Peak Winds 70 mph
Path Length 0.5 mile
Max Width 50 yards
Injuries/Deaths 0

Summary:

Drone pictures indicate that a disorganized tornado touched down southwest of the intersection of County Road 6B and Ironwood Road. The NW corner of a barn suffered damage to a cinder block wall. Corn was observed laid down in a semi convergent pattern as the tornado moved northeast across 6B and eventually Ironwood Road where some tree branches were broken along Issac Sells Ditch. The tornado lifted at this point with no further damage noted. Public Information Statement

Track Map

Track Map EF-Scale

Downloadable KMZ File

 

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
ef-scale

Photos & Video:

Damage Photos

Photo Photo Photo Photo
Barn Damage in Nappanee, IN
Picture from Emily Kennedy (ABC 57)
Tree Damage in Silver Lake, IN
Picture from David Sloan (Times-Union)
Large tree uprooted in Silver Lake, IN
Picture from Heather Black (WSBT)
Shelf cloud near Defiance, OH
Picture from Shelly Bowers

Photo Photo Photo Photo
Drone image of the track of the tornado in the Bremen area. Notice the converging striations. From DeWayne Weaver. Drone image of the track of the tornado in the Bremen area from DeWayne Weaver. Tree damage near an shed building on America Road in the Wabash area from Keith Walters. Tree damage near 6809 S 390 E in the Wabash Area from Keith Walters.

Radar:

Header

Radar Image Radar Image Radar Image Radar Image
Reflectivity/Velocity Loop 1 - 3 pm EDT Reflectivity/Velocity Loop  3 - 5 pm EDT Caption Caption

Storm Reports

PRELIMINARY LOCAL STORM REPORT...SUMMARY
NATIONAL WEATHER SERVICE NORTHERN INDIANA
541 PM EDT FRI JUL 20 2018

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

0420 PM     TSTM WND DMG     HARTFORD CITY           40.45N 85.37W
07/20/2018                   BLACKFORD          IN   TRAINED SPOTTER

            TREE DOWN. TREE DID NOT APPEAR HEALTHY.

0406 PM     HEAVY RAIN       1 N HUNTINGTON          40.89N 85.50W
07/20/2018  M2.00 INCH       HUNTINGTON         IN   PUBLIC

            STORM TOTAL. FROM SOCIAL MEDIA.

0400 PM     TSTM WND DMG     1 NW CRAIGVILLE         40.79N 85.11W
07/20/2018                   WELLS              IN   TRAINED SPOTTER

            13" TREE DOWN, SEVERAL TREE LIMBS SNAPPED.

0339 PM     TSTM WND DMG     HUNTINGTON              40.88N 85.51W
07/20/2018                   HUNTINGTON         IN   TRAINED SPOTTER

            1"-1.25 " TREE BRANCHES DOWN. MINOR STREET
            FLOODING.

0335 PM     TSTM WND DMG     KENDALLVILLE            41.44N 85.26W
07/20/2018                   NOBLE              IN   EMERGENCY MNGR

            LARGE LIMB CAME DOWN ON POWER LINES AT NOBLE
            CTY FAIRGROUNDS.

0322 PM     HAIL             LINCOLNVILLE            40.75N 85.68W
07/20/2018  M1.00 INCH       WABASH             IN   EMERGENCY MNGR

            LASTED FOR 30 SECONDS.

0236 PM     TSTM WND DMG     BEAVER DAM LAKE         41.09N 85.97W
07/20/2018                   KOSCIUSKO          IN   TRAINED SPOTTER

            SEVERAL TREES DOWN. TIME ESTIMATED FROM
            RADAR.

0235 PM     TSTM WND DMG     2 SSW CLUNETTE          41.30N 85.93W
07/20/2018                   KOSCIUSKO          IN   PUBLIC

            3 POWER POLES SNAPPED AND TRANSFORMER DOWN
            IN ROAD. TIME ESTIMATED VIA RADAR.

0215 PM     TSTM WND DMG     1 NW NAPPANEE           41.45N 86.00W
07/20/2018                   ELKHART            IN   BROADCAST MEDIA

            BARN AND ROOF DAMAGE. TIME ESTIMATED FROM
            RADAR.

0206 PM     TSTM WND DMG     ETNA GREEN              41.28N 86.05W
07/20/2018                   KOSCIUSKO          IN   PUBLIC

            TREE LIMBS DOWN, BARN DAMAGE, GRAIN BIN
            DAMAGED AND CORN FLATTENED DOWN. TIME
            ESTIMATED FROM RADAR.

0205 PM     TSTM WND DMG     BOURBON                 41.30N 86.12W
07/20/2018                   MARSHALL           IN   BROADCAST MEDIA

            TREE DOWN ACROSS THE ROAD. TIME ESTIMATED
            VIA RADAR.

1240 PM     TSTM WND DMG     MICHIGAN CITY           41.71N 86.88W
07/20/2018                   LA PORTE           IN   BROADCAST MEDIA

            *** 1 INJ ***
            TREE DOWN ON CAR. AT LEAST 1 INJURED. TIME
            ESTIMATED FROM RADAR.

0715 AM     TSTM WND DMG     1 ENE ANGOLA            41.65N 84.98W
07/20/2018                   STEUBEN            IN   EMERGENCY MNGR

            DAMAGE TO SEVERAL LARGE TREES. SOME TREES
            SNAPPED AT CENTER.


&&

$$


Rain Reports

A map of storm total rainfall coming soon.

Environment Environment Environment
Figure 1: AHPS 24 hr precipitation estimate ending 7AM on July 21 so it includes the overnight rain after the event. Figure 8: Caption Figure 9: Caption

 


Environment

 

Environment Environment Environment
Figure 1:  16Z 850 mb analysis Figure 2: 16Z 500 mb analysis Figure 3: 16Z 300 mb analysis


 

Environment Environment Environment
Figure 4: 16Z (12 pm EDT) MUCAPE and Effective Bulk Shear. Note the best shear was still south of the area Figure 5: 16Z DCAPE (Values above 1000 J/KG indicate increased threat for damaging winds) Figure 6: 16Z EHI (Values above 1 indicate increased threat for severe weather, including supercells)


Additional environmental data.

Environment Environment Environment
Figure 7: 1635Z Visible Satellite Image-Note clearing prior to rapid development Figure 8: Caption Figure 9: Caption

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