Alert archive / New Jersey / Severe Thunderstorm Warnings in 1999
Severe Thunderstorm Warning 34, NWS Philadelphia/Mount Holly
NWS Philadelphia/Mount Holly issued this severe thunderstorm warning at Jun 7, 1999, 7:10 PM EDT for Warren County, New Jersey; Northampton County, Pennsylvania. It was in force for 35 min. 2 reports came from inside the area while it was in force.
The area
The counties it named, with what was reported inside it.
The facts
- Issued
- Jun 7, 1999, 7:10 PM EDT (23:10 UTC)
- Expired
- Jun 7, 1999, 7:45 PM EDT
- In force
- 35 min
- Issued by
- NWS Philadelphia/Mount Holly
- Area
- Whole counties
Counties Warren County, NJ, Northampton County, PA
The radar
The Philadelphia radar (KDIX), 114 km from the middle of the area, began a volume at 23:10 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.
What was reported inside it
| Time | Report | Where | Remark |
|---|---|---|---|
| Jun 7, 7:12 PM EDT | Thunderstorm Wind 57 | Nazareth, PA | |
| Jun 7, 7:25 PM EDT | Thunderstorm Wind 50 | Belvidere, NJ |
NCEI Storm Data entries that began inside the alert's area while it was in force. Before 2003 the local storm report archive is thin, so this is the record of what happened rather than what was phoned in.
The watch it was issued in
The SPC watch in force over the same counties when this warning went out.
| Issued | Product | Office | Lasted |
|---|---|---|---|
| Jun 7, 4:30 PM EDT | Severe Thunderstorm Watch | SPC | 6 hr |
The nearest sounding before it
Phillips Aaf/Abe, MD (KAPG), launched 12:00Z, 11.2 hours before the alert went out and 169 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.
- Mixed-layer CAPE
- 0 J/kg
- Mixed-layer CIN
- No buoyant parcel
- Mixed-layer LCL
- 1561 m above ground
- 0-6 km bulk shear
- 6 kt
- 0-1 km storm-relative helicity
- 12 m²/s²
- 0-3 km storm-relative helicity
- 41 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted, in the capitals the NWS used until 2016.
417 WUUS1 KPHL 072315 RRA SVRPHL NJC041-PAC095-072345- BULLETIN - EAS ACTIVATION REQUESTED SEVERE THUNDERSTORM WARNING NATIONAL WEATHER SERVICE MOUNT HOLLY NJ 710 PM EDT MON JUN 7 1999 THE NATIONAL WEATHER SERVICE IN MOUNT HOLLY NJ HAS ISSUED A * SEVERE THUNDERSTORM WARNING FOR... SOUTHWESTERN WARREN COUNTY IN NEW JERSEY. NORTHAMPTON COUNTY IN PENNSYLVANIA. * UNTIL 745 PM EDT. * AT 705 PM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A SEVERE THUNDERSTORM... OVER CHAPMAN...OR ABOUT 5 MILES WEST OF NAZARETH...MOVING EAST AT 25 MPH. * THE SEVERE THUNDERSTORM WILL BE NEAR... EASTLAWN GARDENS...STOCKERTOWN AT 720 PM EDT... OLD ORCHARD...PALMER HEIGHTS...TATAMY AT 725 PM EDT... EASTON...GLENDON...WEST EASTON...WILSON AT 730 PM EDT... PHILLIPSBURG AT 735 PM EDT... THIS STORM HAS A HISTORY OF PRODUCING DAMAGING WINDS. FOR THE LATEST STORM INFORMATION...PLEASE TUNE TO NOAA WEATHER RADIO...YOUR LOCAL RADIO OR TELEVISION STATION...OR YOUR CABLE TELEVISION OUTLET. A SEVERE THUNDERSTORM WATCH REMAINS IN EFFECT UNTIL 1000 PM EDT MONDAY EVENING FOR PORTIONS OF NORTHEAST PENNSYLVANIA AND NORTHERN NEW JERSEY.
What forecasters said that day
The local office's own words before this severe thunderstorm warning went out, as it sent them, from the Iowa Environmental Mesonet's archive of National Weather Service text.
In the hours before
Special weather statement, Jun 7, 4:45 PM EDT, 2 hours 25 minutes before
PAZ067>071-NJZ015-017>019-DEZ001-090300- SPECIAL WEATHER STATEMENT...EXCESSIVE HEAT WARNING NATIONAL WEATHER SERVICE MOUNT HOLLY NJ 445 PM EDT MON JUN 7 1999 ...AN EXCESSIVE HEAT WARNING FOR HIGHLY URBANIZED AREAS OF THE DELAWARE VALLEY REMAINS IN EFFECT THROUGH TUESDAY... THIS AFTERNOON...HEAT INDICES IN THE WARNING AREA GENERALLY PEAKED NEAR 105. TONIGHT WON/T BRING ALOT OF RELIEF...AS IT WILL BE WARM AND MUGGY. FOR TOMORROW...ALTHOUGH DEWPOINTS WILL GRADUALLY BEGIN TO FALL IN THE AFTERNOON...TEMPERATURES IN THE MID TO UPPER 90S WILL ONCE AGAIN CAUSE HEAT INDICES TO REACH AROUND 100. THE HEAT INDEX IS A MEASURE OF THE COMBINED EFFECTS OF HIGH HEAT AND HUMIDITY ON THE HUMAN BODY. PEOPLE IN URBANIZED AREAS THROUGHOUT THE PHILADELPHIA METROPOLITAN REGION SHOULD SEEK AIR-CONDITIONED RELIEF WHERE POSSIBLE. OTHERWISE MAINTAIN PROPER AIR CIRCULATION BY KEEPING WINDOWS OPEN AND BY USING FANS. IF YOU HAVE OUTDOOR WORK PLANNED FOR TOMORROW WHICH CAN/T BE POSTPONED...TRY TO FINISH IT IN THE MORNING. ALSO...REGARDLESS OF WHEN TOMORROW YOU WORK OUTDOORS...WEAR LOOSE-FITTING...LIGHT COLORED CLOTHING. TAKE FREQUENT BREAKS IN THE SHADE. TRY TO DRINK PLENTY OF WATER OR OTHER NON-ALCOHOLIC BEVERAGES. DON/T WAIT UNTIL YOU FEEL THIRSTY. ALSO...KEEP AN EYE ON ELDERLY FRIENDS AND RELATIVES SINCE THEY ARE THE MOST SUSCEPTIBLE TO HEAT-INDUCED ILLNESSES. PETS ALSO SUFFER DURING THESE HOT SPELLS. MAKE SURE TO GIVE THEM AMPLE WATER AND ACCESS TO SHADE. DON/T LEAVE ANYONE...ANY PERSON OR ANY PET...IN A PARKED AUTOMOBILE FOR ANY LENGTH OF TIME. FURTHER STATEMENTS WILL BE ISSUED THROUGH TUESDAY BY THE NATIONAL WEATHER SERVICE IN MOUNT HOLLY NJ. FOR THE LATEST INFORMATION ON THIS HOT SPELL PLEASE STAY TUNED TO NOAA WEATHER RADIO...YOUR LOCAL RADIO OR TV STATIONS...OR YOUR CABLE TV OUTLET. WEATHER INFORMATION MAY ALSO BE FOUND ON THE NWS MOUNT HOLLY INTERNET HOME PAGE AT WWW.NWS.NOAA.GOV/ER/PHI. MPD
Special weather statement, Jun 7, 4:45 PM EDT, 2 hours 25 minutes before
PAZ067>071-NJZ015-017>019-DEZ001-090300- SPECIAL WEATHER STATEMENT...EXCESSIVE HEAT WARNING NATIONAL WEATHER SERVICE MOUNT HOLLY NJ 445 PM EDT MON JUN 7 1999 ...AN EXCESSIVE HEAT WARNING FOR HIGHLY URBANIZED AREAS OF THE DELAWARE VALLEY REMAINS IN EFFECT THROUGH TUESDAY... THIS AFTERNOON...HEAT INDICES IN THE WARNING AREA GENERALLY PEAKED NEAR 105. TONIGHT WON/T BRING ALOT OF RELIEF...AS IT WILL BE WARM AND MUGGY. FOR TOMORROW...ALTHOUGH DEWPOINTS WILL GRADUALLY BEGIN TO FALL IN THE AFTERNOON...TEMPERATURES IN THE MID TO UPPER 90S WILL ONCE AGAIN CAUSE HEAT INDICES TO REACH AROUND 100. THE HEAT INDEX IS A MEASURE OF THE COMBINED EFFECTS OF HIGH HEAT AND HUMIDITY ON THE HUMAN BODY. PEOPLE IN URBANIZED AREAS THROUGHOUT THE PHILADELPHIA METROPOLITAN REGION SHOULD SEEK AIR-CONDITIONED RELIEF WHERE POSSIBLE. OTHERWISE MAINTAIN PROPER AIR CIRCULATION BY KEEPING WINDOWS OPEN AND BY USING FANS. IF YOU HAVE OUTDOOR WORK PLANNED FOR TOMORROW WHICH CAN/T BE POSTPONED...TRY TO FINISH IT IN THE MORNING. ALSO...REGARDLESS OF WHEN TOMORROW YOU WORK OUTDOORS...WEAR LOOSE-FITTING...LIGHT COLORED CLOTHING. TAKE FREQUENT BREAKS IN THE SHADE. TRY TO DRINK PLENTY OF WATER OR OTHER NON-ALCOHOLIC BEVERAGES. DON/T WAIT UNTIL YOU FEEL THIRSTY. ALSO...KEEP AN EYE ON ELDERLY FRIENDS AND RELATIVES SINCE THEY ARE THE MOST SUSCEPTIBLE TO HEAT-INDUCED ILLNESSES. PETS ALSO SUFFER DURING THESE HOT SPELLS. MAKE SURE TO GIVE THEM AMPLE WATER AND ACCESS TO SHADE. DON/T LEAVE ANYONE...ANY PERSON OR ANY PET...IN A PARKED AUTOMOBILE FOR ANY LENGTH OF TIME. FURTHER STATEMENTS WILL BE ISSUED THROUGH TUESDAY BY THE NATIONAL WEATHER SERVICE IN MOUNT HOLLY NJ. FOR THE LATEST INFORMATION ON THIS HOT SPELL PLEASE STAY TUNED TO NOAA WEATHER RADIO...YOUR LOCAL RADIO OR TV STATIONS...OR YOUR CABLE TV OUTLET. WEATHER INFORMATION MAY ALSO BE FOUND ON THE NWS MOUNT HOLLY INTERNET HOME PAGE AT WWW.NWS.NOAA.GOV/ER/PHI. MPD
The office that day
Everything else NWS Philadelphia/Mount Holly issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jun 7, 6:15 PM EDT | Severe Thunderstorm Warning | PHI | Carbon | 35 min |
| Jun 7, 6:43 PM EDT | Severe Thunderstorm Warning | PHI | Northampton | 32 min |
| Jun 7, 7:58 PM EDT | Severe Thunderstorm Warning | PHI | Bucks, Lehigh | 32 min |
Nearby
Severe Thunderstorm Warnings in New Jersey, 1999Severe Thunderstorm Warnings in Pennsylvania, 1999Every severe thunderstorm warning in 1999
Sources
The product and its follow-ups from the Iowa Environmental Mesonet's archive of National Weather Service and Storm Prediction Center text; verification from NCEI's Storm Data; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.