Alert archive / Pennsylvania / Freeze Watches in 2010

Freeze Watch 1, NWS Philadelphia/Mount Holly

May 8, 2010Sussex County, New Jersey; Carbon County, Monroe County, Pennsylvania

NWS Philadelphia/Mount Holly issued this freeze watch at May 8, 2010, 3:55 PM EDT for Sussex County, New Jersey; Carbon County, Monroe County, Pennsylvania. It took effect at May 10, 2010, 12:00 AM EDT. It was in force for .

The area

The counties it named.

The facts

Issued
May 8, 2010, 3:55 PM EDT (19:55 UTC)
In effect from
May 10, 2010, 12:00 AM EDT
Expired
May 9, 2010, 4:45 AM EDT
In force
Issued by
NWS Philadelphia/Mount Holly

Counties Sussex County, NJ, Carbon County, PA, Monroe County, PA

The radar

The Philadelphia radar (KDIX), 140 km from the middle of the area, began a volume at 19:54 UTC, the scan nearest the moment this went out.

Open the radar archive at this moment

The archived warnings, watches and discussions in force at that minute are drawn over the scan, this one among them.

The nearest sounding before it

Albany, NY (KALY), launched 12:00Z, 7.9 hours before the alert went out and 218 km from the middle of its area. This is the routine balloon launch nearest before it, the air the forecaster had in hand, not a measurement taken for the alert.

Skew-T log-pSkew-T log-p diagram, Albany, NY at 12:00Z on 2010-05-08Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 0 joules per kilogram.LCL10008507005003002001001 km2 km3 km6 km9 km12 km15 km-30°-20°-10°0°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Albany, NY at 12:00Z on 2010-05-08The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 412 square meters per square second.1939587897Sfc1 km3 km6 km9 kmRMLM
The wind turning with height, colored by layer: ground to 1 km, 1 to 3 km, 3 to 6 km, 6 to 10 km.
Mixed-layer CAPE
0 J/kg
Mixed-layer CIN
No buoyant parcel
Mixed-layer LCL
506 m above ground
0-6 km bulk shear
65 kt
0-1 km storm-relative helicity
412 m²/s²
0-3 km storm-relative helicity
424 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.4

Open this sounding in Storm Lab

What forecasters said that day

The local office's own words before this freeze watch went out, as it sent them, from the Iowa Environmental Mesonet's archive of National Weather Service text.

NWS Philadelphia/Mount Holly wrote its last area forecast discussion before this freeze watch went out at May 8, 3:35 PM EDT, 20 minutes earlier.

Area forecast discussion, May 8, 3:35 PM EDT, 20 minutes before
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Hazardous weather outlook, May 8, 2:20 PM EDT, 1 hour 35 minutes before
HAZARDOUS WEATHER OUTLOOK
NATIONAL WEATHER SERVICE MOUNT HOLLY NJ
220 PM EDT SAT MAY 8 2010

DEZ004-NJZ001-007>010-014-024>026-PAZ054-055-061-062-091830-
DELAWARE BEACHES-SUSSEX-WARREN-MORRIS-HUNTERDON-SOMERSET-
EASTERN MONMOUTH-ATLANTIC COASTAL CAPE MAY-COASTAL ATLANTIC-
COASTAL OCEAN-CARBON-MONROE-LEHIGH-NORTHAMPTON-
220 PM EDT SAT MAY 8 2010

...WIND ADVISORY IN EFFECT UNTIL 6 AM EDT SUNDAY...

THIS HAZARDOUS WEATHER OUTLOOK IS FOR SOUTHERN DELAWARE...CENTRAL
NEW JERSEY...NORTHERN NEW JERSEY...NORTHWEST NEW JERSEY...SOUTHERN
NEW JERSEY...EAST CENTRAL PENNSYLVANIA AND NORTHEAST PENNSYLVANIA.

.DAY ONE...THIS AFTERNOON AND TONIGHT.

PLEASE LISTEN TO NOAA WEATHER RADIO OR GO TO WEATHER.GOV ON THE
INTERNET FOR MORE INFORMATION ABOUT THE FOLLOWING HAZARDS.

   WIND ADVISORY.

STRONG GUSTY WINDS COUPLED WITH RELATIVE HUMIDITIES IN THE 30 TO
35 PERCENT RANGE WILL CREATE ENHANCED FIRE WEATHER CONDITIONS
THROUGH THE EVENING.

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

IT WILL REMAIN WINDY TOMORROW, BUT GUSTS WILL NOT BE AS HIGH AS
TODAY. THE GUSTY WINDS, DRY FUELS, AND RELATIVE HUMIDITIES
DROPPING TO BELOW 30 PERCENT WILL CAUSE AN ENHANCED FIRE DANGER
ONCE AGAIN.

OTHERWISE, HAZARDOUS WEATHER CONDITIONS ARE NOT EXPECTED AT THIS
TIME.

.SPOTTER INFORMATION STATEMENT...

SPOTTER ACTIVATION IS NOT EXPECTED AT THIS TIME.

DEZ001>003-MDZ008-012-015-019-020-NJZ012-013-015>023-027-PAZ060-
067>071-091830-
NEW CASTLE-KENT-INLAND SUSSEX-CECIL-KENT MD-QUEEN ANNES-TALBOT-
CAROLINE-MIDDLESEX-WESTERN MONMOUTH-MERCER-SALEM-GLOUCESTER-CAMDEN-
NORTHWESTERN BURLINGTON-OCEAN-CUMBERLAND-ATLANTIC-CAPE MAY-
SOUTHEASTERN BURLINGTON-BERKS-CHESTER-MONTGOMERY-BUCKS-DELAWARE-
PHILADELPHIA-
220 PM EDT SAT MAY 8 2010

...RED FLAG WARNING IN EFFECT UNTIL 8 PM EDT THIS EVENING...
...WIND ADVISORY IN EFFECT UNTIL 6 AM EDT SUNDAY...

THIS HAZARDOUS WEATHER OUTLOOK IS FOR CENTRAL DELAWARE...NORTHERN
DELAWARE...SOUTHERN DELAWARE...NORTHEAST MARYLAND...CENTRAL NEW
JERSEY...NORTHERN NEW JERSEY...SOUTHERN NEW JERSEY...EAST CENTRAL
PENNSYLVANIA AND SOUTHEAST PENNSYLVANIA.

.DAY ONE...THIS AFTERNOON AND TONIGHT.

PLEASE LISTEN TO NOAA WEATHER RADIO OR GO TO WEATHER.GOV ON THE
INTERNET FOR MORE INFORMATION ABOUT THE FOLLOWING HAZARDS.

   RED FLAG WARNING.
   WIND ADVISORY.

STRONG GUSTY WINDS COUPLED WITH RELATIVE HUMIDITIES IN THE 20 TO
30 PERCENT RANGE WILL CREATE ENHANCED FIRE WEATHER CONDITIONS
THROUGH THE EVENING.

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

IT WILL REMAIN WINDY TOMORROW, BUT GUSTS WILL NOT BE AS HIGH AS
TODAY. THE GUSTY WINDS, DRY FUELS, AND RELATIVE HUMIDITIES
DROPPING TO BELOW 30 PERCENT WILL CAUSE AN ENHANCED FIRE DANGER
ONCE AGAIN.

OTHERWISE, HAZARDOUS WEATHER CONDITIONS ARE NOT EXPECTED AT THIS
TIME.

.SPOTTER INFORMATION STATEMENT...

SPOTTER ACTIVATION IS NOT EXPECTED AT THIS TIME.

ANZ450>455-091830-
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-
220 PM EDT SAT MAY 8 2010

...GALE WARNING IN EFFECT UNTIL 6 PM EDT SUNDAY...

THIS HAZARDOUS WEATHER OUTLOOK IS FOR ATLANTIC COASTAL WATERS.

.DAY ONE...THIS AFTERNOON AND TONIGHT.

PLEASE LISTEN TO NOAA WEATHER RADIO OR GO TO WEATHER.GOV ON THE
INTERNET FOR MORE INFORMATION ABOUT THE FOLLOWING HAZARDS.

   GALE WARNING.

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

PLEASE LISTEN TO NOAA WEATHER RADIO OR GO TO WEATHER.GOV ON THE
INTERNET FOR MORE INFORMATION ABOUT THE FOLLOWING HAZARDS.

   GALE WARNING.

.SPOTTER INFORMATION STATEMENT...

SPOTTER ACTIVATION IS NOT EXPECTED AT THIS TIME.

ANZ430-431-091830-
DELAWARE BAY WATERS NORTH OF EAST POINT NJ TO SLAUGHTER BEACH DE-
DELAWARE BAY WATERS SOUTH OF EAST POINT NJ TO SLAUGHTER BEACH DE-
220 PM EDT SAT MAY 8 2010

...GALE WARNING IN EFFECT UNTIL 2 PM EDT SUNDAY...

THIS HAZARDOUS WEATHER OUTLOOK IS FOR DELAWARE BAY WATERS.

.DAY ONE...THIS AFTERNOON AND TONIGHT.

PLEASE LISTEN TO NOAA WEATHER RADIO OR GO TO WEATHER.GOV ON THE
INTERNET FOR MORE INFORMATION ABOUT THE FOLLOWING HAZARDS.

   GALE WARNING.

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

PLEASE LISTEN TO NOAA WEATHER RADIO OR GO TO WEATHER.GOV ON THE
INTERNET FOR MORE INFORMATION ABOUT THE FOLLOWING HAZARDS.

   GALE WARNING.

.SPOTTER INFORMATION STATEMENT...

SPOTTER ACTIVATION IS NOT EXPECTED AT THIS TIME.

In the hours before

Special weather statement, May 8, 11:55 AM EDT, 4 hours before
SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE MOUNT HOLLY NJ
1155 AM EDT SAT MAY 8 2010

DEZ001>004-MDZ008-012-015-019-020-NJZ001-007>010-012>027-PAZ054-
055-060>062-067>071-090030-
NEW CASTLE-KENT-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-
INCLUDING THE CITIES OF...WILMINGTON...DOVER...GEORGETOWN...
REHOBOTH BEACH...ELKTON...CHESTERTOWN...CENTREVILLE...EASTON...
DENTON...NEWTON...WASHINGTON...MORRISTOWN...FLEMINGTON...
SOMERVILLE...NEW BRUNSWICK...FREEHOLD...SANDY HOOK...TRENTON...
PENNSVILLE...GLASSBORO...CAMDEN...CHERRY HILL...MOORESTOWN...
MOUNT HOLLY...JACKSON...MILLVILLE...HAMMONTON...
CAPE MAY COURT HOUSE...OCEAN CITY...ATLANTIC CITY...
LONG BEACH ISLAND...WHARTON STATE FOREST...JIM THORPE...
STROUDSBURG...READING...ALLENTOWN...BETHLEHEM...WEST CHESTER...
NORRISTOWN...DOYLESTOWN...MEDIA...PHILADELPHIA
1155 AM EDT SAT MAY 8 2010

...ENHANCED FIRE DANGER THIS AFTERNOON AND EARLY EVENING...

WEST WINDS WILL CONTINUE TO INCREASE THIS AFTERNOON IN THE WAKE OF
THE DEPARTING COLD FRONT AND REACH SUSTAINED SPEEDS OF 20 TO 35
MPH WITH HIGHER GUSTS. THIS WILL CONTINUE INTO TONIGHT. RELATIVE
HUMIDITY VALUES WILL DECREASE BEHIND THE FRONT AND WILL GENERALLY
BE IN THE 30 TO 35 PERCENT RANGE. THE COMBINATION OF THE LOW
RELATIVE HUMIDITIES AND STRONG GUSTY WINDS WILL CAUSE AN ENHANCED
FIRE DANGER AND CREATE AN ENVIRONMENT FAVORABLE FOR THE SPREAD OF
WILDFIRES.

PLEASE EXERCISE CAUTION WHEN HANDLING ANY POTENTIAL IGNITION
SOURCES INCLUDING CIGARETTES AND MATCHES.

TFG
Special weather statement, May 8, 12:14 PM EDT, 3 hours 41 minutes before
SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE MOUNT HOLLY NJ
1214 PM EDT SAT MAY 8 2010

DEZ003-004-MDZ019-020-081745-
CAROLINE MD-DELAWARE BEACHES DE-INLAND SUSSEX DE-TALBOT MD-
1214 PM EDT SAT MAY 8 2010

...A STRONG THUNDERSTORM COULD AFFECT CAROLINE...SUSSEX AND TALBOT
COUNTIES...

AT 1210 PM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
STRONG THUNDERSTORM 19 MILES SOUTH OF EASTON...MOVING NORTHEAST AT 45
MPH. THE THUNDERSTORM WILL BE NEAR CHOPTANK...WINDYHILL AROUND 1230
PM...SEAFORD...FEDERALSBURG AROUND 1245 PM...BRIDGEVILLE...ELLENDALE
AROUND 100 PM...MILTON...LEWES AROUND 115 PM...HENLOPEN ACRES AND
REHOBOTH BEACH AROUND 130 PM.

THIS STORM MIGHT PASS JUST TO THE SOUTH OF TALBOT AND CAROLINE
COUNTIES AND HAS THE GREATEST CHANCE OF AFFECTING SUSSEX COUNTY.

WIND GUSTS TO AROUND 45 MPH ARE POSSIBLE WITH THIS STORM. IF YOU
SEE THREATENING WEATHER, PLEASE MOVE INDOORS QUICKLY.

TFG
Local storm report, May 8, 2:18 PM EDT, 1 hour 37 minutes before
PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE MOUNT HOLLY NJ
218 PM EDT SAT MAY 08 2010

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

0216 PM     NON-TSTM WND GST 2 WSW PELLETTOWN        41.15N 74.72W
05/08/2010  E50.00 MPH       SUSSEX             NJ   TRAINED SPOTTER

            *** 4 INJ *** OUTDOOR TENT COLLAPSED WITH SEVERAL

            INJURIES IN FRANKLIN TOWNSHIP. SEVERAL INJURIES REPORTED.

&&

VM

The office that day

Everything else NWS Philadelphia/Mount Holly issued on the same UTC day.

IssuedProductOfficeCountiesLasted
May 8, 4:15 AM EDTWind AdvisoryPHIAtlantic, Burlington, Camden, Cape May, Cumberland, Gloucester and 10 more25 hr
May 8, 2:02 PM EDTRed Flag WarningPHIAtlantic, Burlington, Camden, Cape May, Cumberland, Gloucester and 5 more6 hr
May 8, 7:59 PM EDTFire Weather WatchPHIAtlantic, Burlington, Camden, Cape May, Cumberland, Gloucester and 9 more8 hr

Nearby

Freeze Watches in Pennsylvania, 2010Freeze Watches in New Jersey, 2010Every freeze watch in 2010

Sources

The product and its follow-ups from the Iowa Environmental Mesonet's archive of National Weather Service and Storm Prediction Center text; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.