New Jersey, 2003

Hail and Damaging Wind in New Jersey, August 6, 2003

August 6, 2003 · NWS PHI · 2 events in 1 county or zone

A severe thunderstorm knocked over a couple of trees in Madison Borough and tree limbs in Morristown. One road was blocked in Madison.

Where it happened

Every event with a place to put it. Tap one for its entry below.

  • Tornadoes
  • Tropical storms and surge
  • Floods
  • Wind
  • Hail
  • Winter weather
  • Heat and drought
  • Cold
  • Fire, smoke and dust
  • Marine and coastal
  • Other

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The toll

Deaths
0
Injuries
0
Property damage
None recorded
Crop damage
None recorded
Events
2

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.

What happened

The episode as NWS PHI wrote it up.

A severe thunderstorm knocked over a couple of trees in Madison Borough and tree limbs in Morristown. One road was blocked in Madison. The same storm also spewed penny size hail onto parts of Morristown.

What forecasters said that day

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 Aug 6, 9:05 AM EST, 4 hours 45 minutes earlier.

Area forecast discussion, Aug 6, 9:05 AM EST, 4 hours 45 minutes before
AREA FORECAST DISCUSSION - UPDATE
NATIONAL WEATHER SERVICE MOUNT HOLLY NJ
1005 AM EDT WED AUG 6 2003

ANOTHER UPDATE TO AGAIN IMPROVE THE WX SOUTH. WEAK DYNAMICS ONLY
NORTH SUPPORT LOWERING THE POPS S. ALTHOUGH THE SOUNDING IS MUCH
DRIER THAN YDA...TEMPS STILL ARE FCST TO REACH THE CNVCTV TEMP SO I
PREFER TO GO 20 POP OR SLGT CHC S. NRN ZONES...WITH THE BETTER
DYNAMICS I WILL KEEP LIKELY EVEN THOUGH THE DYNAMICS ARE WEAK. BUT
WHEN THESE WEAK DYNAMICS ARE COMBINED WITH HEATING...THE THREAT
BECOMES MORE LIKELY. EVEN SO...SVR THREAT HAD DIMINISHED AND
PREVIOUS UPDATES AND STATEMENTS TOOK CARE OF THAT.

WITH BUOY 9 SHOWING SEAS BLO 5 FT...I WILL DROP SCA SRN AREAS TOO.

RNS
---------------------------------------
PRVS

WILL UPDATE AND TAKE OUT PCPN FOR THIS AM AS MOST OF THE LEFT OVER
PCPN FROM LAST NIGHT HAS MOVE OUT OF THE FCST AREA. WILL ALSO GO
WITH CHC POPS ALL SRN ZONES AS THE NEW MODEL RUNS SHOW MOST OF THE
DYNAMICS ACROSS THE NORTHERN AREAS.

RNS
---------------------------------------
PRVS

BUSY NIGHT SO FAR. WILL NOT EXTEND THE FFA. AREA OF HEAVY PRECIP
SHOULD MOVE THRU IN NEXT HOUR OR SO. WILL KEEP MENTION OF HEAVY RAIN
IN MOST OF NJ AS S/W CONTINUES TO ROTATE NE.

TONIGHT IN BETWEEN SYSTEMS AS THE NEXT ONE TAKES AIM FOR LATER THIS
WEEK. DEEP LAYER MOISTURE EASES SOME LATER TODAY INTO THURSDAY BUT
SFC AND BOUDARY LAYER STAY MOIST.

MARINE WILL CONT SCA FOR SEAS ON COAST.

FCSTID =   10
MPO   77  64  80  63 /  40  40  40  40
ABE   83  65  85  69 /  50  50  40  40
RDG   83  65  85  69 /  50  50  40  40
PHL   87  72  87  72 /  50  50  40  40
12N   81  66  84  65 /  60  60  50  50
SMQ   84  67  86  70 /  70  70  40  40
TTN   86  70  86  70 /  60  60  40  40
MIV   85  70  87  71 /  50  50  40  40
ACY   82  72  85  72 /  60  60  40  40
ILG   85  72  87  72 /  50  50  40  40
DOV   85  71  87  72 /  40  40  40  40
GED   86  71  87  72 /  40  40  40  40
ESN   84  72  87  72 /  40  40  40  40

.PHI...
DE...NONE.
MD...NONE.
NJ...NONE.
PA...NONE.
MARINE...SCA ANZ450>452

ZEV
Hazardous weather outlook, Aug 6, 7:44 AM EST, 6 hours 6 minutes before
DEZ001>004-MDZ008-012-015-019-020-NJZ001-007>010-012>027-PAZ054-055-
060>062-067>071-061444-

HAZARDOUS WEATHER OUTLOOK...UPDATED
NATIONAL WEATHER SERVICE MOUNT HOLLY NJ
844 AM EDT WED AUG 6 2003

THIS HAZARDOUS WEATHER OUTLOOK IS FOR EAST CENTRAL AND SOUTHEAST
PENNSYLVANIA...DELAWARE...THE NORTHERN MARYLAND EASTERN SHORE...AND
NEW JERSEY EXCLUDING THE FIVE NORTHEAST COUNTIES.

.DAY ONE...TODAY

DRIER AND MORE STABLE AIR HAS MOVED INTO THE MIDDLE ATLANTIC
REGION.  THUS...THE RISK OF SEVERE THUNDERSTORMS FOR OUR AREA HAS
DIMINISHED. SCATTERED THUNDERSTORMS MAY STILL DEVELOP LATER TODAY
AND MAY BE ACCOMPANIED BY GUSTY WINDS AND BRIEF HEAVY RAIN.

THERE IS A MODERATE RISK OF RIP CURRENTS TODAY ALONG THE NEW JERSEY
AND DELAWARE COASTS.

.DAYS TWO THROUGH SEVEN...

NO HAZARDOUS WEATHER IS EXPECTED AT THIS TIME.

.SPOTTER INFORMATION STATEMENT...

SPOTTER ACTIVATION MAY BE REQUIRED.

RPW

The radar

The Philadelphia radar (KDIX), 89 km away, was scanning. The volume nearest the first event began at 18:52 UTC.

Open the radar archive at this moment

Event by event

1 thunderstorm wind, 1 hail. Local standard time, as filed.

Thunderstorm Wind, Morris

When
August 6, 1:50 PM EST
Where
Morris County, Madison
Measured
52 kt (60 mph) estimated gust
Reported by
NEWSPAPER
Coordinates
40.750, -74.417

Hail, Morris

When
August 6, 1:50 PM EST
Where
Morris County, Morristown
Measured
0.75 in hail
Reported by
TRAINED SPOTTER
Coordinates
40.800, -74.467

What these are

Thunderstorm Wind
Winds from a thunderstorm of 50 knots (58 mph) or more, or lower winds that caused damage or casualties. Measured gusts are marked MG, estimated EG.
Hail
Hail three-quarters of an inch or larger, or smaller hail that caused damage, filed with the largest stone measured.

After NWS Directive 10-1605, the rules offices file Storm Data by.

The same day elsewhere

More

Every storm in New Jersey in 2003Every state in 2003This day in weather historyWarnings in New Jersey, August 2003

Sources

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 2026-09-24. Each event’s entry at NCEI: 5333144, 5333145.