A squall line of strong to severe thunderstorms preceded a cold frontal passage during the early afternoon along the Eastern Shore. The strongest thunderstorms affected Cecil County.
Every event with a place to put it. Tap one for its entry below.
Deaths and injuries are direct and indirect together, as the offices filed them. Damage is property and crops in the dollars of the year, not adjusted for inflation, and only where an office estimated it.
The episode as NWS PHI wrote it up.
A squall line of strong to severe thunderstorms preceded a cold frontal passage during the early afternoon along the Eastern Shore. The strongest thunderstorms affected Cecil County.
The local office's own words before the first event, 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 the first event at Oct 7, 8:18 AM EST, 3 hours 52 minutes earlier.
AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE MOUNT HOLLY NJ
918 AM EDT MON OCT 7 2013
.SYNOPSIS...
A STRONG COLD FRONT EXTENDED SOUTHWARD FROM EASTERN ONTARIO,
ACROSS THE UPPER OHIO RIVER VALLEY AND THE SOUTHERN APPALACHIANS
TO THE NORTHEASTERN GULF OF MEXICO EARLY THIS MORNING. THE
BOUNDARY WILL PUSH EASTWARD AND IT IS EXPECTED TO PASS THROUGH OUR
REGION DURING THE AFTERNOON AND EVENING HOURS. HIGH PRESSURE IS
FORECAST TO BUILD FROM THE OHIO RIVER VALLEY TONIGHT TO NEW
ENGLAND FOR THE MID WEEK PERIOD BEFORE IT MOVES OUT TO SEA. BROAD
LOW PRESSURE TO OUR SOUTH AND SOUTHEAST IS EXPECTED TO APPROACH
LATE IN THE WEEK. HIGH PRESSURE FROM THE NORTH AND NORTHEAST MAY
BEGIN TO NOSE INTO OUR REGION OVER THE WEEKEND.
&&
.NEAR TERM /UNTIL 6 PM THIS EVENING/...
A TORNADO WATCH IS IN EFFECT TO THE REGION THROUGH 500 PM. SHOWERS
AND SCT TSTMS WILL DEVELOP AHEAD OF A COLD FRONT WHICH WILL MOVE
EWARD ACROSS THE REGION THIS AFTERNOON. MARGINAL CAPE VALUES WILL
BE AHEAD OF THE FRONT...BUT DECENT LOW LEVEL FLOW WILL AID IN
POSSIBLE SVR TSTM FORMATION.
ONLY MINOR CHANGES MADE TO WX/SKY GRIDS AND TEMPS/DEW POINTS ARE
OVERALL OK.
&&
.SHORT TERM /6 PM THIS EVENING THROUGH 6 AM TUESDAY/...
WITH THE COLD FRONT MOVING OFF THE COAST THIS EVENING, THE THREAT
OF ANY RAINFALL WILL COME TO AN END.
BEING THE STRONGEST COLD FRONT WE'VE SEEN IN A FEW WEEKS, THE AIR
BEHIND IT IS GOING TO FEEL DRY. THE DEWPOINTS ARE GOING TO DROP
ABOUT 20 DEGREES IN 12 HOURS. BY DAYBREAK, THEY'LL BE RUNNING IN
THE 40S.
OVERNIGHT LOWS WILL DROP INTO THE 40S AND 50S WITH THE COOLEST
READINGS NORTH AND WEST.
THE NORTHWEST WINDS WILL SETTLE DOWN TO 10 MPH OR LESS.
&&
.LONG TERM /TUESDAY THROUGH SUNDAY/...
A MID LEVEL TROUGH IS FORECAST TO BE LOCATED OVER QUEBEC AND NEW
ENGLAND ON TUESDAY MORNING. THE FEATURE SHOULD LIFT NORTHEASTWARD
ALLOWING WEAK RIDGING TO DEVELOP OVER OUR REGION FOR LATE TUESDAY
INTO EARLY WEDNESDAY. BROAD LOW PRESSURE IN THE MID LEVELS WILL
LIKELY BE LOCATED OVER THE SOUTHEASTERN STATES ON TUESDAY. IT IS
EXPECTED TO LIFT VERY SLOWLY NORTH AND NORTHEASTWARD DURING THE
MID TO LATE WEEK PERIOD AND OVER THE WEEKEND.
THE SURFACE COLD FRONT SHOULD BE WELL OFF THE COAST ON TUESDAY
WITH HIGH PRESSURE BUILDING INTO OUR REGION FROM THE WEST. DRY
WEATHER IS ANTICIPATED FOR TUESDAY AND TUESDAY NIGHT.
HIGH PRESSURE TO OUR NORTH AND NORTHEAST AND LOW PRESSURE TO OUR
SOUTH WILL MAINTAIN A NORTHEASTERLY FLOW IN OUR REGION THROUGH
MOST OF THE LONG TERM FORECAST PERIOD. AS THE MID LEVEL LOW LIFTS
NORTH AND NORTHEASTWARD IT WILL BEGIN TO HAVE AN INCREASING
INFLUENCE ON OUR WEATHER. SOME RAIN MAY BEGIN TO SPREAD INTO THE
SOUTHERN PART OF OUR FORECAST AREA ON WEDNESDAY AND WEDNESDAY
NIGHT. WHILE THE GUIDANCE VARIES IN THE DETAILS, THERE REMAINS A
CHANCE FOR RAIN IN OUR ENTIRE FORECAST AREA FOR THURSDAY AND
FRIDAY, AS WELL AS FOR THE WEEKEND. UNFORTUNATELY, THE DETAILS
REGARDING THE TIMING AND AMOUNT OF RAIN REMAIN A VERY LOW
CONFIDENCE FORECAST BASED ON THE DIFFERING MODEL SOLUTION. FOR
EXAMPLE, THE 0000 UTC GFS SUGGESTS A PERIOD OF MODERATE TO HEAVY
RAINFALL CENTERED AROUND THURSDAY WHILE THE 0000 UTC ECMWF HOLDS
THAT POSSIBILITY MAINLY FOR FRIDAY INTO THE WEEKEND.
THE NORTHEAST FLOW SHOULD BRING TEMPERATURES BACK TO SEASONABLE
LEVELS FOR THIS TIME OF THE YEAR.
&&
.AVIATION /13Z MONDAY THROUGH FRIDAY/...
THE FOLLOWING DISCUSSION IS FOR KPHL, KPNE, KTTN, KABE, KRDG,
KILG, KMIV, KACY AND SURROUNDING AREAS.
TODAY...HIGHLY VARIABLE CONDITIONS AT THE TERMINALS WITH MOSTLY
MVFR CONDITIONS AS OF THE MID MORNING. SHOWERS AND ISOLATED TSTMS
EXPECTED THROUGH THE AFTERNOON AS A COLD FRONT APPROACHES. WINDS
WILL BE SRLY AHEAD OF THE FRONT AND THEN SHIFT TO WRLY OR NWRLY
BEHIND IT. TIMING...17-18Z WEST...18-20Z CENTRAL...20-22Z EAST.
TONIGHT...THE TERMINALS WILL SEE A RETURN TO VFR BETWEEN 22Z AND
00Z AS THE FRONT TRACKS INTO THE ATLANTIC. A NORTHWEST FLOW OF 10
KT OR LESS WILL PERSIST THROUGH THE OVERNIGHT.
OUTLOOK...
THE WIND DIRECTION WILL BE MAINLY FROM THE NORTH TO EAST QUADRANT
DURING THE PERIOD TUESDAY THROUGH FRIDAY.
TUESDAY AND TUESDAY NIGHT...VFR.
WEDNESDAY AND WEDNESDAY NIGHT...MAINLY VFR WITH A CHANCE OF RAIN
SPREADING SLOWLY NORTHWARD INTO OUR REGION.
THURSDAY THROUGH FRIDAY...A CHANCE OF RAIN WITH MVFR CONDITIONS
POSSIBLY DEVELOPING.
&&
.MARINE...
A TORNADO WATCH IS IN EFFECT FOR THE WATERS UNTIL 500 PM THIS
AFTERNOON.
A SMALL CRAFT ADVISORY IS NOW IN EFFECT UNTIL 600 AM TUESDAY. SOUTH
WINDS WILL CONTINUE TO INCREASE AHEAD OF THE COLD FRONT. WIND
GUSTS UP TO 30 KT ARE POSSIBLE AND SEAS WILL RESPOND AND BUILD TO 4
TO 6 FEET. SHOWERS AND A CHANCE OF THUNDERSTORMS ARE EXPECTED THIS
AFTERNOON AND INTO THE EARLY EVENING HOURS.
BOTH WINDS AND SEAS WILL SUBSIDE A BIT AFTER MIDNIGHT.
OUTLOOK...
HIGH PRESSURE TO OUR NORTH AND NORTHEAST AND LOW PRESSURE TO OUR
SOUTH WILL KEEP A MAINLY NORTHEAST SURFACE FLOW ALONG THE COASTS
OF NEW JERSEY AND DELAWARE. WAVE HEIGHTS ON OUR OCEAN WATERS ARE
FORECAST TO BE AT LEAST IN THE 5 TO 8 FOOT RANGE DURING MID TO
LATE WEEK, SO A SMALL CRAFT ADVISORY SHOULD BE IN EFFECT FOR AN
EXTENDED PERIOD OF TIME. WIND GUSTS OF 25 TO 30 KNOTS ARE POSSIBLE
AT TIMES, AS WELL. THE SMALL CRAFT ADVISORY CONDITIONS WILL LIKELY
ALSO AFFECT LOWER DELAWARE BAY. HOWEVER, WIND GUSTS MAY REMAIN
JUST BELOW THE CRITERION OF 25 KNOTS ON THE UPPER PART OF DELAWARE
BAY SO AN ADVISORY IS NOT AS CERTAIN THERE.
&&
.TIDES/COASTAL FLOODING...
COMING OFF THE NEW MOON ON FRIDAY, TIDES ARE STILL ON THE HIGH
SIDE. WITH THE STRONG SOUTHEASTERLY/SOUTHERLY PUSH DEVELOPING
TODAY, WE COULD SEE SOME TIDES TOUCH MINOR FLOODING LEVELS, MORE
SO UP THE CHESAPEAKE AND DELAWARE BAYS. HIGH TIDES, IN THESE
AREAS, RUN DURING THE AFTERNOON AND EVENING.
HIGH PRESSURE TO OUR NORTH AND NORTHEAST AND LOW PRESSURE TO OUR
SOUTH WILL KEEP A MAINLY NORTHEAST SURFACE FLOW ALONG THE COASTS
OF NEW JERSEY AND DELAWARE DURING THE MID TO LATE WEEK PERIOD.
TIDAL DEPARTURES SHOULD BE ON THE INCREASE ALONG WITH THE
POTENTIAL FOR MINOR TIDAL FLOODING, EVEN AS WE MOVE FURTHER AWAY
IN TIME FROM LAST FRIDAY'S NEW MOON.
&&
.PHI WATCHES/WARNINGS/ADVISORIES...
PA...NONE.
NJ...NONE.
DE...NONE.
MD...NONE.
MARINE...SMALL CRAFT ADVISORY UNTIL 6 PM EDT TUESDAY FOR ANZ452>455.
SMALL CRAFT ADVISORY UNTIL 6 AM EDT TUESDAY FOR ANZ430-431-450-
451.
&&
SYNOPSIS...IOVINO
NEAR TERM...
SHORT TERM...KRUZDLO
LONG TERM...IOVINO
AVIATION...IOVINO/KRUZDLO
MARINE...IOVINO/KRUZDLO
TIDES/COASTAL FLOODING...HAZARDOUS WEATHER OUTLOOK NATIONAL WEATHER SERVICE MOUNT HOLLY NJ 911 AM EDT MON OCT 7 2013 DEZ001-MDZ008-012-015-019-020-NJZ001-007>010-015>019-PAZ054-055- 060>062-070-071-101>106-081315- NEW CASTLE-CECIL-KENT MD-QUEEN ANNES-TALBOT-CAROLINE-SUSSEX-WARREN- MORRIS-HUNTERDON-SOMERSET-MERCER-SALEM-GLOUCESTER-CAMDEN- NORTHWESTERN BURLINGTON-CARBON-MONROE-BERKS-LEHIGH-NORTHAMPTON- DELAWARE-PHILADELPHIA-WESTERN CHESTER-EASTERN CHESTER- WESTERN MONTGOMERY-EASTERN MONTGOMERY-UPPER BUCKS-LOWER BUCKS- 911 AM EDT MON OCT 7 2013 ...TORNADO WATCH 543 IN EFFECT UNTIL 5 PM EDT THIS AFTERNOON... THIS HAZARDOUS WEATHER OUTLOOK IS FOR NORTHERN DELAWARE...NORTHEAST MARYLAND...CENTRAL NEW JERSEY...NORTHERN NEW JERSEY...NORTHWEST NEW JERSEY...SOUTHERN NEW JERSEY...EAST CENTRAL PENNSYLVANIA...NORTHEAST PENNSYLVANIA AND SOUTHEAST PENNSYLVANIA. .DAY ONE...TODAY AND TONIGHT. PLEASE LISTEN TO NOAA WEATHER RADIO OR GO TO WEATHER.GOV ON THE INTERNET FOR MORE INFORMATION ABOUT THE FOLLOWING HAZARDS. TORNADO WATCH. THERE IS THE POTENTIAL FOR MODERATE TO HEAVY RAINFALL FROM THIS AFTERNOON INTO THIS EVENING WHICH COULD RESULT IN FLOODING IN AREAS OF POOR DRAINAGE. ALSO, SCATTERED THUNDERSTORMS DURING THE AFTERNOON AND EARLY EVENING HOURS MAY BE ACCOMPANIED BY STRONG OR SEVERE WIND GUSTS AND POSSIBLY A TORNADO. .DAYS TWO THROUGH SEVEN...TUESDAY THROUGH SUNDAY. THE PROBABILITY FOR WIDESPREAD HAZARDOUS WEATHER IS LOW. .SPOTTER INFORMATION STATEMENT... SPOTTER ACTIVATION IS REQUESTED. DEZ002>004-NJZ012>014-020>027-081315- KENT-INLAND SUSSEX-DELAWARE BEACHES-MIDDLESEX-WESTERN MONMOUTH- EASTERN MONMOUTH-OCEAN-CUMBERLAND-ATLANTIC-CAPE MAY- ATLANTIC COASTAL CAPE MAY-COASTAL ATLANTIC-COASTAL OCEAN- SOUTHEASTERN BURLINGTON- 911 AM EDT MON OCT 7 2013 ...TORNADO WATCH 543 IN EFFECT UNTIL 5 PM EDT THIS AFTERNOON... THIS HAZARDOUS WEATHER OUTLOOK IS FOR CENTRAL DELAWARE...SOUTHERN DELAWARE...CENTRAL NEW JERSEY...NORTHERN NEW JERSEY AND SOUTHERN NEW JERSEY. .DAY ONE...TODAY AND TONIGHT. PLEASE LISTEN TO NOAA WEATHER RADIO OR GO TO WEATHER.GOV ON THE INTERNET FOR MORE INFORMATION ABOUT THE FOLLOWING HAZARDS. TORNADO WATCH. THERE IS THE POTENTIAL FOR MODERATE TO HEAVY RAINFALL FROM THIS AFTERNOON INTO THIS EVENING WHICH COULD RESULT IN FLOODING IN AREAS OF POOR DRAINAGE. ALSO, SCATTERED THUNDERSTORMS DURING THE AFTERNOON AND EARLY EVENING HOURS MAY BE ACCOMPANIED BY STRONG OR SEVERE WIND GUSTS AND POSSIBLY A TORNADO. .DAYS TWO THROUGH SEVEN...TUESDAY THROUGH SUNDAY. A PERSISTENT NORTHEAST WIND MAY RESULT IN SOME MINOR TIDAL FLOODING DURING THE MID TO LATE WEEK PERIOD AND PERHAPS INTO THE WEEKEND. .SPOTTER INFORMATION STATEMENT... SPOTTER ACTIVATION IS REQUESTED. ANZ430-431-450>455-081315- 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- 911 AM EDT MON OCT 7 2013 ...TORNADO WATCH 543 IN EFFECT UNTIL 5 PM EDT THIS AFTERNOON... THIS HAZARDOUS WEATHER OUTLOOK IS FOR ATLANTIC COASTAL WATERS AND DELAWARE BAY WATERS. .DAY ONE...TODAY AND TONIGHT. PLEASE LISTEN TO NOAA WEATHER RADIO OR GO TO WEATHER.GOV ON THE INTERNET FOR MORE INFORMATION ABOUT THE FOLLOWING HAZARDS. TORNADO WATCH. SCATTERED THUNDERSTORMS DURING THE AFTERNOON AND EARLY EVENING HOURS MAY BE ACCOMPANIED BY STRONG OR SEVERE WIND GUSTS AND POSSIBLY A TORNADO OR WATERSPOUT. .DAYS TWO THROUGH SEVEN...TUESDAY THROUGH SUNDAY. THE PROBABILITY FOR WIDESPREAD HAZARDOUS WEATHER IS LOW. .SPOTTER INFORMATION STATEMENT... SPOTTER ACTIVATION IS REQUESTED.
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</html>SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE MOUNT HOLLY NJ
1241 PM EDT MON OCT 7 2013
DEZ001-MDZ008-012-PAZ060-101-102-071745-
BERKS PA-CECIL MD-EASTERN CHESTER PA-KENT MD-NEW CASTLE DE-
WESTERN CHESTER PA-
1241 PM EDT MON OCT 7 2013
...A LINE OF STRONG THUNDERSTORMS WILL AFFECT CECIL...CHESTER...
KENT...SOUTHEASTERN BERKS AND WESTERN NEW CASTLE COUNTIES...
AT 1235 PM EDT...A LINE OF STRONG THUNDERSTORMS WAS LOCATED FROM
LEOLA TO FORT HOWARD...MOVING NORTHEAST AT 50 MPH. THESE STORMS ARE
CAPABLE OF PRODUCING WIND GUSTS TO 5O MILES AN HOUR AND HEAVY
RAINFALL AS THEY MOVE THROUGH THE REGION. BE PREPARED FOR SHARP
REDUCTIONS IN VISIBILITIES WHEN THE HEAVY RAIN MOVES THROUGH.
THESE STORMS WILL BE NEAR ATGLEN AROUND 1250 PM...LORANE AROUND 100
PM...DOWNINGTOWN AROUND 110 PM...ODESSA AROUND 120 PM AND NEWPORT
AROUND 130 PM.
LAT...LON 3918 7628 3932 7619 3943 7601 3952 7599
3954 7608 3972 7623 3977 7607 3988 7599
4011 7595 4014 7589 4022 7600 4048 7560
4036 7560 4024 7570 4024 7568 4024 7560
3947 7558 3924 7596 3923 7604 3907 7623
SZATKOWSKIThe Dover AFB radar (KDOX), 94 km away, was scanning. The volume nearest the first event began at 17:09 UTC.
1 thunderstorm wind. Local standard time, as filed.
A severe thunderstorm snapped the tops off of several trees along Hillcrest Lane in Northeast.
After NWS Directive 10-1605, the rules offices file Storm Data by.
Every storm in Maryland in 2013Every state in 2013This day in weather historyWarnings in Maryland, October 2013
NOAA National Centers for Environmental Information, Storm Events Database, compiled from the National Weather Service’s monthly Storm Data. Complete through 2026-06; NCEI adds each month about 75 days after it ends and revises past years a few times a year. Rebuilt 2026-10-01. Each event’s entry at NCEI: 480163.