Category: Weather Alerts

FLOOD WATCH IN EFFECT FROM 2 AM EDT SUNDAY THROUGH LATE SUNDAY
NIGHT...

* WHAT...Flooding caused by excessive rainfall is possible.

* WHERE...Portions of northern Delaware, including the following
  area, New Castle, New Jersey, including the following areas,
  Camden, Gloucester, Hunterdon, Mercer, Middlesex, Morris,
  Northwestern Burlington, Salem, Somerset, Sussex, Warren and
  Western Monmouth, and Pennsylvania, including the following areas,
  Berks, Delaware, Eastern Chester, Eastern Montgomery, Lehigh,
  Lower Bucks, Northampton, Philadelphia, Upper Bucks, Western
  Chester and Western Montgomery.

* WHEN...From 2 AM EDT Sunday through late Sunday night.

* IMPACTS...Excessive runoff may result in flooding of rivers, creeks, streams, and other low-lying and flood-prone locations. Flooding may occur in poor drainage and urban areas.

* ADDITIONAL DETAILS...
  - Heavy rain and thunderstorms associated with an approaching
    cold front will produce widespread rainfall amounts of 1 to 3 inches with locally higher amounts of 4 inches or more possible.
  - http://www.weather.gov/safety/flood

PRECAUTIONARY/PREPAREDNESS ACTIONS...

You should monitor later forecasts and be alert for possible Flood
Warnings. Those living in areas prone to flooding should be prepared
to take action should flooding develop.

Update: the TORNADO WATCH IS NOW IN EFFECT UNTIL 10pm 

   * Tornado Watch for portions of 
     District Of Columbia
     Delaware
     Central and Eastern Maryland
     Much of New Jersey
     Southeast New York
     Central and Eastern Pennsylvania
     Eastern and Northern Virginia
     Coastal Waters

   * Effective this Friday morning and afternoon from 615 AM until
     200 PM EDT.

   * Primary threats include...
     A few tornadoes possible
     Isolated damaging wind gusts to 60 mph possible

   SUMMARY...Isolated to widely scattered thunderstorms are forecast to
   develop this morning into the early afternoon as a warm front
   advances northward across the Watch area.  Several supercells will
   likely develop and the stronger storms will potentially yield a risk
   for tornadoes.  Isolated damaging gusts may also accompany the more
   intense storms.

WIND ADVISORY IN EFFECT FROM 6 AM TO 8 PM EDT FRIDAY...

* WHAT...Southeast winds 10 to 20 mph with gusts up to occasional
  gusts up to 45 to 50 mph expected.

* WHERE...Portions of New Jersey and southeast Pennsylvania.

* WHEN...From 6 AM to 8 PM EDT Friday.

* IMPACTS...Gusty winds will blow around unsecured objects. Frequent
  gusts of 35 to 45 mph winds will be possible which when combined
  with saturated grounds will have the potential to bring down
  trees. Tree limbs could be blown down and a few power outages may
  result.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Winds this strong can make driving difficult, especially for high
profile vehicles. Use extra caution.

* WHAT...Flooding caused by excessive rainfall is possible.

* WHERE...Portions of northern Delaware, including the following
  area, New Castle, New Jersey, including the following areas,
  Camden, Coastal Ocean, Eastern Monmouth, Gloucester, Hunterdon,
  Mercer, Middlesex, Northwestern Burlington, Ocean, Salem,
  Somerset, Southeastern Burlington and Western Monmouth, and
  southeast Pennsylvania, including the following areas, Delaware,
  Eastern Chester, Eastern Montgomery, Lower Bucks, Philadelphia,
  Upper Bucks, Western Chester and Western Montgomery.

* WHEN...From Tuesday afternoon through Wednesday morning.

* IMPACTS...Excessive runoff may result in flooding of rivers,
  creeks, streams, and other low-lying and flood-prone locations.
  Flooding may occur in poor drainage and urban areas.

* ADDITIONAL DETAILS...
  - A cold front will approach from the north and west on Tuesday
    and will cross the region Tuesday night. This front will
    interact with tropical moisture associated with Hurricane
    Debby to result in heavy downpours over the area. Rainfall
    totals will average 1 to 2 inches, but locally higher amounts
    are possible.

A severe thunder storm watch and flood watch have been issued until 9pm. The heat advisory is still in effect until 8pm

FLOOD WATCH IN EFFECT UNTIL MIDNIGHT EDT TONIGHT...

* WHAT...Flash flooding caused by excessive rainfall is possible.

* WHERE...Portions of northern Delaware, including the following
  area, New Castle, New Jersey, including the following areas,
  Camden, Coastal Ocean, Eastern Monmouth, Gloucester, Hunterdon,
  Mercer, Middlesex, Morris, Northwestern Burlington, Ocean, Salem,
  Somerset, Southeastern Burlington, Sussex, Warren and Western
  Monmouth, and Pennsylvania, including the following areas, Berks,
  Carbon, Delaware, Eastern Chester, Eastern Montgomery, Lehigh,
  Lower Bucks, Monroe, Northampton, Philadelphia, Upper Bucks,
  Western Chester and Western Montgomery.

* WHEN...Until midnight EDT tonight.

* IMPACTS...Excessive runoff may result in flooding of rivers,
  creeks, streams, and other low-lying and flood-prone locations.

* ADDITIONAL DETAILS...
  - Storms this afternoon will be capable of heavy rain. Some
    locations could get multiple rounds of storms, increasing the
    potential for flash flooding, especially in urban areas and
    other areas with poor drainage. Although storms may linger
    past midnight, overnight storms aren`t expected to have as
    much potential for heavy rainfall.
  - http://www.weather.gov/safety/flood

PRECAUTIONARY/PREPAREDNESS ACTIONS...

You should monitor later forecasts and be prepared to take action
should Flash Flood Warnings be issued.

..HEAT ADVISORY IN EFFECT FROM 11 AM THIS MORNING TO 8 PM EDT THIS
EVENING...

* WHAT...Heat index values up to 101 expected.

* WHERE...In Delaware, New Castle County. In New Jersey, Mercer,
  Camden, Gloucester, and Northwestern Burlington Counties. In
  Pennsylvania, Delaware, Eastern Chester, Eastern Montgomery, Lower
  Bucks, and Philadelphia Counties.

* WHEN...From 11 AM this morning to 8 PM EDT this evening.

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

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Drink plenty of fluids, stay in an air-conditioned room, stay out of
the sun, and check up on relatives and neighbors.

EXCESSIVE HEAT WARNING IN EFFECT FROM 11 AM TO 8 PM EDT WEDNESDAY...

* WHAT...Dangerously hot conditions with heat index values up to 105 expected.

* WHERE...In New Jersey, Mercer, Camden, Gloucester, and Northwestern Burlington Counties. In Pennsylvania, Delaware, Eastern Montgomery, Lower Bucks, and Philadelphia Counties.

* WHEN...From 11 AM to 8 PM EDT Wednesday.

* IMPACTS...Heat related illnesses increase significantly during extreme heat and high humidity events.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Drink plenty of fluids, stay in an air-conditioned room, stay out of the sun, and check up on relatives and neighbors.

Do not leave young children and pets in unattended vehicles. Car interiors will reach lethal temperatures in a matter of minutes.

To reduce risk during outdoor work, the Occupational Safety and Health Administration recommends scheduling frequent rest breaks in shaded or air conditioned environments. Anyone overcome by heat should be moved to a cool and shaded location. Heat stroke is an emergency! Call 9 1 1.

…HEAT ADVISORY IN EFFECT FROM 10 AM THURSDAY TO 8 PM EDT FRIDAY…

• WHAT…Heat index values up to 102 expected.
• WHERE…Portions of northern Delaware, central, northern, and southern New Jersey, and southeast Pennsylvania.
• WHEN…From 10 AM Thursday to 8 PM EDT Friday.
• IMPACTS…Hot temperatures and high humidity may cause heat illnesses.

PRECAUTIONARY/PREPAREDNESS ACTIONS…

Drink plenty of fluids, stay in an air-conditioned room, stay out of the sun, and check up on relatives and neighbors.

To reduce risk during outdoor work, the Occupational Safety and Health Administration recommends scheduling frequent rest breaks in shaded or air conditioned environments. Anyone overcome by heat should be moved to a cool and shaded location. Heat stroke is an emergency! Call 9 1 1.

* Effective this Tuesday afternoon and evening from 335 PM until 1000 PM EDT.

* Primary threats include... Scattered damaging wind gusts to 70 mph possible Isolated large hail events to 1 inch in diameter possible

SUMMARY...Widely scattered thunderstorms are expected to develop this afternoon in a hot and humid air mass. Sufficiently strong westerly flow aloft will promote a risk of locally damaging wind gusts in the strongest cells.

The severe thunderstorm watch area is approximately along and 65 statute miles east and west of a line from 15 miles west southwest of Patuxent River MD to 55 miles east northeast of Wilkesbarre PA. For a complete depiction of the watch see the associated watch outline update (WOUS64 KWNS WOU8).

PRECAUTIONARY/PREPAREDNESS ACTIONS...

REMEMBER...A Severe Thunderstorm Watch means conditions are favorable for severe thunderstorms in and close to the watch area. Persons in these areas should be on the lookout for threatening weather conditions and listen for later statements and possible warnings. Severe thunderstorms can and occasionally do produce tornadoes.

EXCESSIVE HEAT WARNING NOW IN EFFECT UNTIL 8 PM EDT WEDNESDAY...

* WHAT...Dangerously hot conditions with heat index values up to 109.

* WHERE...Portions of northern Delaware, central, northern, and
  southern New Jersey, and southeast Pennsylvania.

* WHEN...Until 8 PM EDT Wednesday.

* IMPACTS...Heat related illnesses increase significantly during
  extreme heat and high humidity events.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Drink plenty of fluids, stay in an air-conditioned room, stay out of
the sun, and check up on relatives and neighbors.

Do not leave young children and pets in unattended vehicles. Car
interiors will reach lethal temperatures in a matter of minutes.

Take extra precautions when outside. Wear lightweight and loose
fitting clothing. Try to limit strenuous activities to early morning
or evening. Take action when you see symptoms of heat exhaustion and
heat stroke.

To reduce risk during outdoor work, the Occupational Safety and
Health Administration recommends scheduling frequent rest breaks in
shaded or air conditioned environments. Anyone overcome by heat
should be moved to a cool and shaded location. Heat stroke is an
emergency! Call 9 1 1.