Tornado Warning issued August 11 at 11:07AM CDT until August 11 at 11:30AM CDT by NWS Chicago ILAt 1107 AM CDT, a severe squall line capable of producing both
tornadoes and extensive straight line wind damage stretches across
Lake County, and was moving east at over 75 mph.
HAZARD...Tornadoes and wind gusts in excess of 100 mph.
SOURCE...Radar indicated rotation.
IMPACT...Flying debris will be dangerous to those caught without
shelter. Mobile homes will be damaged or destroyed. Damage
to roofs, windows, and vehicles will occur. Tree damage is
likely.
These dangerous storms will be near...
Merrillville, Hobart, Lakes of the Four Seasons, and Winfield
around 1110 AM CDT.
Safety instructions
TAKE COVER NOW! Move to a basement or an interior room on the lowest
floor of a sturdy building. Avoid windows. If you are outdoors, in a
mobile home, or in a vehicle, move to the closest substantial shelter
and protect yourself from flying debris.
This cluster of thunderstorms is capable of producing tornadoes and
widespread significant wind damage. Do not wait to see or hear the
tornado. For your protection move to an interior room on the lowest
floor of a building.
* WHAT...Flooding caused by excessive rainfall is expected.
* WHERE...Northern Jasper County in northwestern Indiana...
Porter County in northwestern Indiana...
* WHEN...Until 100 PM CDT.
* IMPACTS...Flooding may occur in poor drainage and urban areas.
Roads and streets may be flooded.
* ADDITIONAL DETAILS...
- At 1002 AM CDT, Doppler radar indicated heavy rain slow moving
thunderstorms continuously developing over the same areas.
Localized flooding is expected to begin shortly.
- Some locations that will experience flooding include...
Valparaiso, DeMotte, Hebron, Wheatfield, Lakes of the Four
Seasons, Roselawn, Kouts, Wheeler, Boone Grove, Malden,
Stoutsburg and Dunns Bridge.
- http://www.weather.gov/safety/flood
Safety instructions
A Flood Advisory means minor flooding along waterways and other poor
drainage areas is imminent or may already be occurring. Persons in
the advisory area should use caution and avoid flood waters.
For the following areas...
Nearshore Waters from Winthrop Harbor to Calumet Harbor...
Nearshore Waters from Calumet Harbor to Michigan City...
Open Waters from Winthrop Harbor to Michigan City out to Mid
Lake...
At 1041 AM CDT, severe thunderstorms capable of producing waterspouts
were located along a line extending from 9 nm northeast of Elgin to 9
nm southwest of Midway Airport to 7 nm southeast of Joliet, moving
east at 50 knots.
HAZARD...Waterspouts and wind gusts in excess of 65 knots.
SOURCE...Radar indicated.
IMPACT...Waterspouts can easily overturn boats and create locally
hazardous seas. Boats could suffer significant structural
damage in high winds. Small craft could capsize in suddenly
higher waves.
In addition, rapid large fluctuations in water levels are possible
as and after these storms pass.
severe thunderstorms will be near...
Montrose Harbor, Wilmette Harbor, Monroe Harbor, 31st Street
Harbor, Calumet Harbor, Harrison-Dever Crib, Burnham Harbor,
Belmont Harbor, Jackson Park Harbor, and Diversy Harbor around
1100 AM CDT.
Indiana Harbor around 1105 AM CDT.
Burns Harbor and Marina Shores at Dune Harbor around 1120 AM CDT.
Michigan City around 1130 AM CDT.
Special Marine Warning issued August 11 at 10:09AM CDT until August 11 at 12:15PM CDT by NWS Chicago ILSMWLOT
The National Weather Service in Chicago has issued a
* Special Marine Warning for...
Nearshore Waters from Winthrop Harbor to Calumet Harbor...
Nearshore Waters from Calumet Harbor to Michigan City...
Open Waters from Winthrop Harbor to Michigan City out to Mid
Lake...
* Until 1215 PM CDT.
* At 1009 AM CDT, severe thunderstorms were located along a line
extending from 11 nm southwest of McHenry to 12 nm southwest of
Aurora, moving east at 40 knots.
HAZARD...Wind gusts in excess of 50 knots.
SOURCE...Radar.
IMPACT...Boats could suffer significant structural damage in high
winds. Small craft could capsize in suddenly higher
waves.
* Severe thunderstorms will be near...
Montrose Harbor, Wilmette Harbor, Belmont Harbor, and Diversy
Harbor around 1100 AM CDT.
Monroe Harbor, 31st Street Harbor, Harrison-Dever Crib, Burnham
Harbor, Jackson Park Harbor, 59th Street Marina, and DuSable
Harbor around 1105 AM CDT.
Calumet Harbor and Hammond Marina around 1110 AM CDT.
Indiana Harbor around 1115 AM CDT.
Marina Shores at Dune Harbor around 1130 AM CDT.
Burns Harbor around 1135 AM CDT.
Michigan City around 1150 AM CDT.
Severe Thunderstorm Warning issued August 11 at 11:09AM CDT until August 11 at 11:45AM CDT by NWS Chicago ILAt 1109 AM CDT, severe thunderstorms were located along a line
extending from Gary to Winfield to near Lake Village, moving east at
80 mph.
THESE ARE DESTRUCTIVE STORMS producing measured winds gusts of 90
to over 100 mph.
HAZARD...100 mph wind gusts.
SOURCE...Radar indicated.
IMPACT...You are in a life-threatening situation. Flying debris may
be deadly to those caught without shelter. Mobile homes
will be destroyed. Expect considerable damage to homes and
businesses. Expect extensive tree damage and power outages.
Locations impacted include...
Hammond, Gary, Portage, Merrillville, East Chicago, Schererville,
Hobart, Lansing, Crown Point, Highland, Munster, Cedar Lake, Lowell,
Momence, Lake Village, Griffith, Dyer, St. John, Lake Station,
Lynwood, Lakes of the Four Seasons, Whiting, Winfield, Beecher, and
Roselawn.
Safety instructions
Remain alert for a possible tornado! Tornadoes can develop quickly
from severe thunderstorms. If you spot a tornado go at once into the
basement or small central room in a sturdy structure.
This is an EXTREMELY DANGEROUS SITUATION with tornado like wind
speeds expected. Mobile homes and high profile vehicles are
especially susceptible to winds of this magnitude and may be
overturned. For your protection move to an interior room on the
lowest floor of a building. These storms have the potential to cause
serious injury and significant property damage.
73°89% rain
75°66% rain
78°15% rain
79°15% rain
