Special Weather Statement, NWS Northern Indiana

Area Forecast Discussion
National Weather Service Northern Indiana
216 PM EDT Mon Aug 6 2018

.SYNOPSIS...
Issued at 215 PM EDT Mon Aug 6 2018

Showers and thunderstorms will develop later today into tonight. A
few strong to severe thunderstorms will be possible. Chances for
showers will remain in the forecast into Tuesday and Tuesday
night. Lows tonight will drop to near 70 degrees, with highs on
Tuesday ranging between the upper 70s and mid 80s. Drier and less
humid conditions are expected into Wednesday and Thursday. This
will be followed by periodic chances for showers Friday into next
weekend.

&&

.SHORT TERM...(This Afternoon through Tuesday)
Issued at 215 PM EDT Mon Aug 6 2018

The main focus will remain on convective/severe trends into tonight
and Tuesday.

Convective outflow boundary trailing a Michigan MCV will force a broken
line of convection through far ne IN/sc Lower MI/far nw OH
through 5-6 pm. MLCAPE values now pushing 2000 j/kg with 35 knots
of effective shear may help produce an isolated severe cell in
these areas, though so far activity is primarily outflow dominant
as stronger flow lags the boundary. Mainly dry/humid otherwise
through the late afternoon.

Shot of deeper moisture and mid level vorticity advection with an
approaching mid level jet/shortwave now over IA should allow convection
to blossom near leftover frontal boundary across nw IN/lower MI
btw 23-02z. MLCAPE values likely exceeding 2000 j/kg and some
increase in LLJ (0-3 kt bulk shear magnitudes up to near 30 knots)
with incoming height falls suggest eventual organization.
Development into bands/bowing clusters appears possible given more
unidirectional look to the wind profile (isolated damaging winds
the main threat), though later diurnal timing/marginal deep layer
shear/meager mid level lapse rates suggest an isolated wind threat
at best. There is also a non-zero weak tornado threat with any
surges or storm scale outflow interactions given relatively low
LCL's and increasing low level flow...though lack of backed
surface flow keeps point chances low (SPC 2% risk).

Round of rain/storms is the expected to evolve east through eastern
portions of the forecast area later this evening into the early
overnight. The severe threat should wane with eastward
progression as leading line likely becomes outflow dominate
removed from better mid level flow. Boundary layer will also
cool/decouple limiting the wind threat. Some areas may see an inch
or more of rainfall otherwise given high moisture content and
potential for some backbuilding (small MBE velocities). Brief
urban/advisory level flooding will be the main threat.

Latest CAMs solutions have trended more aggressive with shunting the
composite outflow off to the south later tonight and Tuesday in wake
of this evening's convective complex. Lowered PoPs/QPF as a result
during this periods, though could still see a more widespread area
of rain/thunder impact the local area sometime Tuesday afternoon or
evening as the main mid-upper level trough axis pivots through.
Cooler/mainly cloudy the story otherwise on Tuesday.

&&

.LONG TERM...(Wednesday through Monday)
Issued at 215 PM EDT Mon Aug 6 2018

Wednesday and Thursday will feature quieter/less humid wx, though a
stray late day shower cannot be ruled out either day given cyclonic
flow and weak diurnal instability. An upper trough then digs in nw
flow over the Great Lakes region Friday, eventually cutting off over
the lower Lakes/Ohio Valley this weekend as a closed low per last
several models cycles. This process will send a cold front through on
Friday with low pressure lingering in the vicinity over the weekend.
The result will be periodic shower chances and temps generally near
to below normal.

&&

.AVIATION...(For the 18Z TAFS through 18Z Tuesday Afternoon)
Issued at 148 PM EDT Mon Aug 6 2018

An outflow boundary pushed through this morning allowing for some
marine air to come into the northwest with some MVFR CIGs and that
has helped to hamper, to an extent, some of the early afternoon
convection across the region. With a low level jet just to the
north and a moist atmospheric column, we'll be watching for some
showers with damaging winds, frequent lightning and heavy rain as
the main threats. The main time frame being watched for
thunderstorms is between 22z and 01z and there is a chance for
MVFR to possibly IFR flight condition reductions within storms
with heavy rain. Thereafter, there is a chance for MVFR flight
restrictions forming early Tues, but it depends on where the rain
falls this afternoon so have left it out of this issuance.

&&

.IWX WATCHES/WARNINGS/ADVISORIES...
IN...NONE.
MI...NONE.
OH...NONE.
LM...NONE.
&&

SYNOPSIS...Steinwedel
SHORT TERM...Steinwedel
LONG TERM...Steinwedel
AVIATION...Roller

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Hazardous Weather Outlook...UPDATED
National Weather Service Northern Indiana
225 PM EDT Mon Aug 6 2018

INZ003>005-012>018-020-022>027-032>034-MIZ077>079-OHZ004-005-015-016-
024-025-071830-
La Porte-St. Joseph IN-Elkhart-Starke-Pulaski-Marshall-Fulton IN-
Kosciusko-Whitley-Allen IN-White-Cass IN-Miami-Wabash-Huntington-
Wells-Adams-Grant-Blackford-Jay-Berrien-Cass MI-St. Joseph MI-
Defiance-Henry-Paulding-Putnam-Van Wert-Allen OH-
225 PM EDT Mon Aug 6 2018 /125 PM CDT Mon Aug 6 2018/

This Hazardous Weather Outlook is for northern Indiana, southwest
Michigan and northwest Ohio.

.DAY ONE...This afternoon and tonight.

Severe thunderstorms are possible late this afternoon and evening.
Damaging straight-line winds and heavy rain are the primary threats.

Heat indices will be in the mid 90s today.

.DAYS TWO THROUGH SEVEN...Tuesday through Sunday.

There is a chance for thunderstorms Tuesday afternoon and Friday
afternoon.

.SPOTTER INFORMATION STATEMENT...

Spotter activation may be needed.

INZ006>009-MIZ080-081-OHZ001-002-071830-
Lagrange-Steuben-Noble-De Kalb-Branch-Hillsdale-Williams-Fulton OH-
225 PM EDT Mon Aug 6 2018

This Hazardous Weather Outlook is for northern Indiana, southwest
Michigan and northwest Ohio.

.DAY ONE...This afternoon and tonight.

Severe thunderstorms are possible this afternoon and evening.
Damaging straight-line winds and heavy rain are the primary threats.

.DAYS TWO THROUGH SEVEN...Tuesday through Sunday.

There is a chance for thunderstorms Tuesday afternoon and Friday
afternoon.

.SPOTTER INFORMATION STATEMENT...

Spotter activation may be needed.

LMZ043-046-071830-
New Buffalo MI to St Joseph MI-Michigan City IN to New Buffalo MI-
225 PM EDT Mon Aug 6 2018

This Hazardous Weather Outlook is for The Nearshore Waters of
Southeastern Lake Michigan.

.DAY ONE...This afternoon and tonight.

Thunderstorms are likely this evening. Strong to severe storms will
be possible.

.DAYS TWO THROUGH SEVEN...Tuesday through Sunday.

There is a chance for thunderstorms Tuesday afternoon and Friday
afternoon.

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE NORTHERN INDIANA
622 PM EDT MON AUG 6 2018

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

0430 PM     TSTM WND DMG     1 N FAYETTE             41.68N 84.33W
08/06/2018                   FULTON             OH   EMERGENCY MNGR

            DAMAGE TO SHIPPING CONTAINERS AND TRUCKS.
            TIME ESTIMATED BY RADAR.

&&

CR

Special Weather Statement
National Weather Service Northern Indiana
622 PM EDT MON AUG 6 2018

INZ007-MIZ080-081-062300-
Steuben-Branch-Hillsdale-
622 PM EDT MON AUG 6 2018

...A STRONG THUNDERSTORM WILL AFFECT NORTHERN STEUBEN...SOUTHERN
BRANCH AND SOUTHWESTERN HILLSDALE COUNTIES...

At 622 PM EDT, a strong thunderstorm was located over Bronson, or 11
miles southwest of Coldwater, moving southeast at 35 mph.

Wind gusts up to 50 mph and half inch hail are possible with this
storm.

Locations impacted include...
Angola, Bronson, Fremont, Ray, Kinderhook, California, Gilead,
Camden, Orland, Montgomery, Clear Lake, York, East Gilead, Lake
Gauge, Nevada Mills, Crooked Lake, Berlien, Lake James, Matteson Lake
and Lake Of The Woods.

This includes the following highways...
 Interstate 69 in Indiana between mile markers 350 and 357.
 Interstate 69 in Michigan between mile markers 1 and 8.
 Interstate 80 in Indiana between mile markers 133 and 156.

&&

LAT...LON 4177 8469 4170 8476 4170 8481 4164 8480
      4158 8486 4173 8520 4176 8520 4176 8527
      4177 8529 4182 8529 4195 8521
TIME...MOT...LOC 2222Z 295DEG 30KT 4184 8518

GH

Special Weather Statement
National Weather Service Northern Indiana
525 PM CDT MON AUG 6 2018

INZ003-062300-
La Porte-
525 PM CDT MON AUG 6 2018

...A STRONG THUNDERSTORM WILL AFFECT CENTRAL LA PORTE COUNTY...

At 525 PM CDT, a strong thunderstorm was located near Wanatah, or
near Westville, moving east at 25 mph.

Winds in excess of 40 mph and half inch hail are possible with this
storm.

This storm will be near...
  Kingsford Heights around 640 PM EDT.

Other locations impacted by this storm include South Center, Salem
Heights, Fish Lake, Tracy, Kingsbury, Stillwell and Union Mills.

Frequent cloud to ground lightning is occurring with this storm.
Lightning can strike 10 miles away from a thunderstorm. Seek a safe
shelter inside a building or vehicle.

This storm may intensify, so be certain to monitor local radio
stations and available television stations for additional information
and possible warnings from the National Weather Service.

&&

LAT...LON 4165 8654 4146 8653 4145 8681 4153 8686
TIME...MOT...LOC 2225Z 249DEG 20KT 4149 8681

JBALL

Special Weather Statement
National Weather Service Northern Indiana
625 PM EDT MON AUG 6 2018

INZ018-OHZ015-062315-
Allen-Paulding-
625 PM EDT MON AUG 6 2018

...A STRONG THUNDERSTORM WILL AFFECT EAST CENTRAL ALLEN AND PAULDING
COUNTIES...

At 625 PM EDT, a strong thunderstorm was located over Woodburn, or 10
miles southwest of Hicksville, moving east at 35 mph.

Winds in excess of 40 mph and half inch hail are possible with this
storm.

Locations impacted include...
Paulding, Antwerp, Woodburn, Payne, Oakwood, Grover Hill, Melrose,
Latty, Cecil, Broughton, Worstville, Charloe, Edgerton In Allen
County, Roselms, Briceton and Arthur.

&&

LAT...LON 4099 8438 4110 8493 4119 8491 4123 8446
      4121 8446 4121 8436
TIME...MOT...LOC 2225Z 274DEG 31KT 4115 8485

GH

Special Weather Statement
National Weather Service Northern Indiana
526 PM CDT MON AUG 6 2018

INZ003-012-062300-
La Porte-Starke-
526 PM CDT MON AUG 6 2018

...A STRONG THUNDERSTORM WILL AFFECT NORTHEASTERN STARKE AND
SOUTHWESTERN LA PORTE COUNTIES...

At 526 PM CDT, a strong thunderstorm was located over La Crosse, or
near Malden, moving east at 25 mph.

Winds in excess of 40 mph and half inch hail are possible with this
storm.

This storm will be near...
  Kingsford Heights and Hamlet around 700 PM EDT.

Other locations impacted by this storm include Hanna, Brems and
Thomaston.

Frequent cloud to ground lightning is occurring with this storm.
Lightning can strike 10 miles away from a thunderstorm. Seek a safe
shelter inside a building or vehicle.

This storm may intensify, so be certain to monitor local radio
stations and available television stations for additional information
and possible warnings from the National Weather Service.

&&

LAT...LON 4148 8668 4133 8655 4130 8688 4134 8693
      4139 8693
TIME...MOT...LOC 2226Z 249DEG 20KT 4135 8691

JBALL

Special Weather Statement
National Weather Service Northern Indiana
639 PM EDT MON AUG 6 2018

INZ004-MIZ077-078-062330-
St. Joseph-Berrien-Cass-
639 PM EDT MON AUG 6 2018

...A STRONG THUNDERSTORM WILL AFFECT NORTHEASTERN ST. JOSEPH...
SOUTHWESTERN CASS AND SOUTHEASTERN BERRIEN COUNTIES...

At 639 PM EDT, a strong thunderstorm was located near Roseland, or
near South Bend, moving east at 20 mph.

Winds in excess of 40 mph and half inch hail are possible with this
storm.

This storm will be near...
  South Bend around 645 PM EDT.
  Roseland around 655 PM EDT.
  Georgetown around 700 PM EDT.
  Mishawaka around 705 PM EDT.
  Niles around 710 PM EDT.
  Granger around 715 PM EDT.

Other locations impacted by this storm include Barron Lake, Bertrand,
Lydick, Chain-o-lakes and Indian Village.

This includes Interstate 80 in Indiana between mile markers 67 and
86.

Frequent cloud to ground lightning is occurring with this storm.
Lightning can strike 10 miles away from a thunderstorm. Seek a safe
shelter inside a building or vehicle.

This storm may intensify, so be certain to monitor local radio
stations and available television stations for additional information
and possible warnings from the National Weather Service.

&&

LAT...LON 4170 8606 4168 8606 4165 8640 4177 8645
      4187 8614
TIME...MOT...LOC 2239Z 249DEG 19KT 4172 8637

JBALL