* WHAT...South winds 20 to 30 mph with gusts up to 45 mph expected.

* WHERE...A portion of northern Indiana.

* WHEN...From 7 AM EST /6 AM CST/ to 4 PM EST /3 PM CST/ Tuesday.

* IMPACTS...Gusty winds will blow around unsecured objects. Tree
limbs could be blown down and a few power outages may result.

ESFIWX

The potential of heavy rain continues to increase through Wednesday
as the remnants of tropical system Beryl lift across the southern
Great
Lakes and Ohio River Valley. An initial round of scattered showers
and thunderstorms is possible Monday night into early Tuesday. The
greater potential of heavy rainfall is Tuesday night into Wednesday
afternoon. Confidence remains low on the exact track of this system
and the resulting axis of heaviest rainfall. However, widespread
amounts of 1 to 2 inches appears likely Tuesday night into
Wednesday, with locally, with locally higher amounts possible.

Heavy rainfall could lead to areal flooding concerns and rises on
rivers across the area during the middle and latter portions of this
week. If higher precipitation amounts in the forecasted range occur,
some river flooding would also be possible. A good deal of
uncertainty persists regarding the track of this system, so stay
weather aware over the next 24 to 36 hours and monitor forecast
updates along with the potential for any flood watches and warnings.

Through mid day Tuesday, wind gusts 35 to 45 mph are expected with
variable wind direction in Southwest Lower Michigan and far North
Central Indiana.

These winds are not associated with a thunderstorm and will tend to
occur after the rain ends. A few additional tree limbs and branches
may fall in areas that were affected by this morning's storm.

* WHAT...Dangerously hot conditions with heat index values into
the upper 90s.

* WHERE...Portions of northern Indiana and southwest Michigan.

* WHEN...Until 8 PM EDT /7 PM CDT/ this evening.

* IMPACTS...Hot temperatures and high humidity may cause heat
illnesses to occur.

* ADDITIONAL DETAILS...Heat stress increases with the number of
consecutive hot days. The effects of heat are most impactful
for more vulnerable urban populations.

The Excessive Heat Watch has been replaced. Please see the latest information from NWS Northern Indiana on this developing situation.

* WHAT...Peak heat index values of 95 to 100 through Saturday.

* WHERE...Portions of northern Indiana and southwest Michigan.

* WHEN...Until 8 PM EDT /7 PM CDT/ Saturday.

* IMPACTS...Hot temperatures and high humidity may cause heat
illnesses to occur.

* ADDITIONAL DETAILS...Heat stress increases with the number of
consecutive hot days. The effects of heat are most impactful
for more vulnerable urban populations.

The Excessive Heat Watch has been replaced. Please see the latest information from NWS Northern Indiana on this developing situation.

* WHAT...Heat index values of 95 to 100 degrees expected.

* WHERE...Portions of northern Indiana and southwest Michigan.

* WHEN...Until 8 PM EDT /7 PM CDT/ Tuesday.

* IMPACTS...Hot temperatures and high humidity may cause heat
illnesses to occur.

* ADDITIONAL DETAILS...There is a chance that clouds linger from
an overnight chance for showers and storms, which could limit
how high heat indices get on Tuesday. However, should clouds
scatter out, heat indices could rapidly rise quickly. Heat
stress increases with the number of consecutive hot days. Heat
indices will range from 93 to near 100 for the next five days,
with high temperatures in the upper 80s and low to mid 90s. Low
temperatures in the 70s at night will provide little relief from
the heat. Monitor for additional heat headlines this week.

An Air Quality Action Day has been declared by the Indiana
Department of Environmental Management for Saturday May 18th in
portions of north-central and northwest Indiana.

Ozone levels are expected to be in the Orange or unhealthy for
sensitive groups range.

People and businesses are urged to avoid activities which lead to
ozone and fine particulate formation. These activities include...
refueling vehicles or topping off when refueling, using gasoline
powered lawn equipment and using charcoal lighter fluid. Positive
activities include...car pooling, biking to work, delaying or
combining errands and using water based paints.

It is recommended that people with respiratory diseases such as
asthma limit prolonged outdoor exertion.

An Air Quality Action Day has been declared by the Indiana
Department of Environmental Management for Saturday May 18th in
portions of north-central and northwest Indiana.

Ozone levels are expected to be in the Orange or unhealthy for
sensitive groups range.

People and businesses are urged to avoid activities which lead to
ozone and fine particulate formation. These activities include...
refueling vehicles or topping off when refueling, using gasoline
powered lawn equipment and using charcoal lighter fluid. Positive
activities include...car pooling, biking to work, delaying or
combining errands and using water based paints.

It is recommended that people with respiratory diseases such as
asthma limit prolonged outdoor exertion.