Flash Flood in Delaware, July 22, 2006

AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE MOUNT HOLLY NJ
948 PM EDT SAT JUL 22 2006

.SHORT TERM /REST OF TONIGHT/...
WE/RE IN THE PROCESS OF DROPPING THE FLASH FLOOD WATCH FOR MOST OF
OUR CWA. WE HAVE EXTENDED THE WATCH DEEPER INTO THE NIGHT FOR OUR
SOUTHEASTERN CWA AS THE THUNDERSTORMS SHOULD NOT CLEAR THEM BY
MIDNIGHT.

&&

.PHI WATCHES/WARNINGS/ADVISORIES...
PA...NONE.
NJ...FLASH FLOOD WATCH FOR NJZ021>025 UNTIL 4 AM SUNDAY.
DE...FLASH FLOOD WATCH FOR DEZ002>004 UNTIL 4 AM SUNDAY.
MD...FLASH FLOOD WATCH FOR MDZ012-015-019-020 UNTIL 4 AM SUNDAY.
MARINE...SMALL CRAFT ADVISORY FOR ANZ430 UNTIL 2 AM SUNDAY.
  ...SMALL CRAFT ADVISORY FOR ANZ431 UNTIL 5 AM SUNDAY.
  ...SMALL CRAFT ADVISORY FOR ANZ450>455 UNTIL 9 AM SUNDAY.
&&

TFG

&&

.PREV DISCUSSION...
 /ISSUED 315 PM EDT SAT JUL 22 2006/

OVERVIEW...
A WET COUPLE OF WEEKS, AND ANOTHER ONE AHEAD AND HUMID. THIS YEAR IN
MANY RESPECTS REMINDS ME OF 1988. VERY WARM AND HUMID AND A
PERSISTENT STRONG WESTERN ATLANTIC HIGH AND A STEADY STREAM OF SW
WINDS.

SHORT TERM /TONIGHT THROUGH MONDAY NIGHT/...
VERY ACTIVE WEATHER TO ERUPT THIS AFTERNOON AND EVENING AS STRONG
UPPER LVL SH/W DIGS SE OVERRIDING WARM AND HUMID AIRMASS. PCPN THIS
MORNING WAS MAINLY HEAVY TROPICAL RAINS BUT THIS AFTERNOON, TSTMS
ACCOMPANIED BY DAMAGING WINDS, HAIL AND CONCERN ALSO FOR SUPERCELLS
OR A TORNADO. AIRMASS IS HEATING UP OVER CENTRAL PA AND SOUTH AND
ITS THIS CLEAR AREA THAT THE TSTMS WILL FIRE UP AND MOVE EAST IN
LINES. WARNINGS LIKELY TO BE ISSUED SHORTLY AFTER THE TSTMS DEVELOP
WITH THE MEAN STORM VECTOR MOTION 230 AT 30 KT WHILE THE LINE
PROPAGATES TO THE EAST SOUTHEAST. SEVERE THUNDERSTORM WATCH 636 IN
EFFECT ENTIRE REGION UNTIL 8 PM.

TWO DISTINCT BOUNDARIES ON SATL. FIRST IS FROM NW NJ S THEN SW  INTO
THE BWI REGION. THIS IS ON EASTERN EDGE OF THINNING CLOUDS. RADAR
SHOWING ECHOES ALONG THIS BOUNDARY AND LOOK FOR MORE TSTMS TO START
FIRING UP TO THE WEST. FLASH FLOOD WATCH REMAINS IN EFFECT AS
POTENTIAL FOR SEVERAL MORE INCHES EXITS.

LONG TERM /TUESDAY THROUGH SATURDAY/...
SHORT LONG TERM. AGITATED ATMOSPHERE TO REMAIN IN PLACE FOR THE NEXT
WEEK AS TROUGHING REMAINS OVER THE MID ATLANTIC REGION THROUGH THE
30TH. WHILE UPPER FLOW REMAINS FAST, LOWER LEVELS WILL BE MOIST AND
UNSTABLE. WITH SO MUCH MOISTURE AROUND TEMPERATURES NOT LIKELY TO
TOP 90 ON TWO OR MORE DAYS.

AVIATION...
THE FIRST ROUND OF SHOWERS MOVED EAST BY ABOUT NOON. RECENT VISIBLE
SAT PICS INDICATE SOME CLEARING SKIES JUST TO THE WEST OF OUR CWA,
AND THIS IS NOT GOOD IN THAT IT WILL FOSTER THE DEVELOPMENT OF
SEVERE WEATHER DURING THE LATE AFTERNOON AND EVENING HOURS. HAVE
INCLUDED MVFR AND VFR CONDITIONS IN THE TAFS INTO THE OVERNIGHT
HOURS TO REFLECT EXPECTED SEVERE WEATHER. AFTER 6Z CONDITIONS
IMPROVE EXCEPT NEAR THE COAST WHERE IMPROVEMENTS WILL TAKE LONGER TO
OCCUR. AFTER TONIGHT, HIGH PRESSURE BUILDS IN FOR MONDAY INTO TUES,
AND VFR WILL PREVAIL.

MARINE...
GRADIENT WILL CONTINUE TO TIGHTEN LATE THIS AFTERNOON AND THIS
EVENING OVER THE FORECAST WATERS. SCA WILL REMAIN IN EFFECT THROUGH
12Z ALONG THE COAST...TIL 09Z FOR THE LOWER DELAWARE BAY...AND TIL
06Z FOR THE UPPER DELAWARE BAY. 7 FOOT SEAS STILL LOOK GOOD ON THE
OCEAN, AND THAT IS EXPECTED TO OCCUR DURING THE OVERNIGHT HOURS.
WINDS WILL DROP BELOW SCA CONDITIONS SUNDAY MORNING, AND THE SAME
FOR SEAS BY EARLY AFTERNOON.

&&

HAZARDOUS WEATHER OUTLOOK
NATIONAL WEATHER SERVICE MOUNT HOLLY NJ
427 AM EDT SAT JUL 22 2006

ANZ430-431-450>455-DEZ001>004-MDZ008-012-015-019-020-NJZ001-
007>010-012>027-PAZ054-055-060>062-067>071-231000-
DELAWARE BAY WATERS NORTH OF EAST POINT NJ TO SLAUGHTER BEACH DE-
DELAWARE BAY WATERS SOUTH OF EAST POINT NJ TO SLAUGHTER BEACH DE-
COASTAL WATERS FROM SANDY HOOK TO MANASQUAN INLET NJ OUT 20 NM-
COASTAL WATERS FROM MANASQUAN INLET TO LITTLE EGG INLET NJ OUT
20 NM-
COASTAL WATERS FROM LITTLE EGG INLET TO GREAT EGG INLET NJ OUT
20 NM-
COASTAL WATERS FROM GREAT EGG INLET TO CAPE MAY NJ OUT 20 NM-
COASTAL WATERS FROM CAPE MAY NJ TO CAPE HENLOPEN DE OUT 20 NM-
COASTAL WATERS FROM CAPE HENLOPEN TO FENWICK ISLAND DE OUT 20 NM-
NEW CASTLE-KENT DE-INLAND SUSSEX-DELAWARE BEACHES-CECIL-KENT MD-
QUEEN ANNES-TALBOT-CAROLINE-SUSSEX-WARREN-MORRIS-HUNTERDON-
SOMERSET-MIDDLESEX-WESTERN MONMOUTH-EASTERN MONMOUTH-MERCER-SALEM-
GLOUCESTER-CAMDEN-NORTHWESTERN BURLINGTON-OCEAN-CUMBERLAND-
ATLANTIC-CAPE MAY-ATLANTIC COASTAL CAPE MAY-COASTAL ATLANTIC-
COASTAL OCEAN-SOUTHEASTERN BURLINGTON-CARBON-MONROE-BERKS-LEHIGH-
NORTHAMPTON-CHESTER-MONTGOMERY-BUCKS-DELAWARE-PHILADELPHIA-
427 AM EDT SAT JUL 22 2006

THIS HAZARDOUS WEATHER OUTLOOK IS FOR PORTIONS OF EASTERN
PENNSYLVANIA, DELAWARE, THE NORTHERN MARYLAND EASTERN SHORE AND
NEW JERSEY, EXCLUDING THE FIVE NORTHEAST COUNTIES.

.DAY ONE...TODAY AND TONIGHT

A FLASH FLOOD WATCH IS IN EFFECT FOR THE ENTIRE AREA THROUGH THIS
EVENING. IN ADDITION THE STORM PREDICTION CENTER HAS PLACED THE
ENTIRE AREA IN A SLIGHT RISK FOR SEVERE WEATHER TODAY. BECAUSE OF
THE WIND PROFILE ABOVE THE GROUND IN ADDITION TO DAMAGING STRAIGHT
LINE WINDS THERE EXISTS THE POSSIBILITY FOR TORNADOES. PLEASE LOOK
FOR FURTHER UPDATES THROUGHOUT THE DAY. THERE IS A MODERATE RISK
FOR RIP CURRENTS ALONG THE ATLANTIC SHORE TODAY.

.DAYS TWO THROUGH SEVEN...SUNDAY THROUGH FRIDAY.

NO HAZARDOUS WEATHER IS EXPECTED.

.SPOTTER INFORMATION STATEMENT...

SKYWARN ACTIVATION MAY BE NECESSARY TODAY.

TFG

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE MOUNT HOLLY NJ
923 PM EDT SAT JUL 22 2006

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

0350 PM     TSTM WND DMG     CLIFTON HEIGHTS         39.93N 75.30W
07/22/2006                   DELAWARE           PA   TRAINED SPOTTER

            TREES AND WIRES DOWN.

0355 PM     TSTM WND DMG     PHILA                   40.00N 75.15W
07/22/2006                   PHILADELPHIA       PA   EMERGENCY MNGR

            COUPLE OF TREES AND LIMBS DOWN IN JUNIATA AND WEST
            PHILADELPHIA SECTIONS.

0848 PM     TSTM WND DMG     4 NNE SMYRNA            39.34N 75.57W
07/22/2006                   NEW CASTLE         DE   EMERGENCY MNGR

            TREES AND WIRES DOWN IN BLACKBIRD HUNDERED NEW CASTLE
            COUNTY.

&&

GIGI

PRELIMINARY LOCAL STORM REPORT...SUMMARY
NATIONAL WEATHER SERVICE MOUNT HOLLY NJ
931 PM EDT SAT JUL 22 2006

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

0350 PM     TSTM WND DMG     CLIFTON HEIGHTS         39.93N 75.30W
07/22/2006                   DELAWARE           PA   TRAINED SPOTTER

            TREES AND WIRES DOWN.

0355 PM     TSTM WND DMG     PHILA                   40.00N 75.15W
07/22/2006                   PHILADELPHIA       PA   EMERGENCY MNGR

            COUPLE OF TREES AND LIMBS DOWN IN JUNIATA AND WEST
            PHILADELPHIA SECTIONS.

0430 PM     LIGHTNING        BURLINGTON              40.08N 74.85W
07/22/2006                   BURLINGTON         NJ   EMERGENCY MNGR

            *** 1 INJ *** BOY STRUCK AND INJURED BY LIGHTNING WHILE
            PLAYING AN ELECTRIC GUITAR.

0500 PM     TSTM WND DMG     TRENTON                 40.22N 74.76W
07/22/2006                   MERCER             NJ   EMERGENCY MNGR

            TREES AND WIRES DOWN IN HAMILTON SQUARE.

0515 PM     TSTM WND DMG     MIDDLETOWN              39.45N 75.71W
07/22/2006                   NEW CASTLE         DE   EMERGENCY MNGR

            SCATTERED LARGE LIMBS AND WIRES DOWN THROUGHOUT THE
            COUNTY.

0614 PM     TSTM WND DMG     NORTH EAST              39.60N 75.94W
07/22/2006                   CECIL              MD   EMERGENCY MNGR

            TREES DOWN

0848 PM     TSTM WND DMG     4 NNE SMYRNA            39.34N 75.57W
07/22/2006                   NEW CASTLE         DE   EMERGENCY MNGR

            TREES AND WIRES DOWN IN BLACKBIRD HUNDERED NEW CASTLE
            COUNTY.

&&

GIGI