Alert archive / Pennsylvania / Tornado Warnings in 1997
Tornado Warning 1, NWS Philadelphia/Mount Holly
NWS Philadelphia/Mount Holly issued this tornado warning at Jul 18, 1997, 6:29 PM EDT for Monroe County, Pennsylvania. It was in force for 31 min. 1 report 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
- Jul 18, 1997, 6:29 PM EDT (22:29 UTC)
- Expired
- Jul 18, 1997, 7:00 PM EDT
- In force
- 31 min
- Issued by
- NWS Philadelphia/Mount Holly
- Area
- Whole counties
County Monroe County, PA
The radar
The Binghamton radar (KBGM), 138 km from the middle of the area, began a volume at 22:28 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 |
|---|---|---|---|
| Jul 18, 6:30 PM EDT | Thunderstorm Wind | East Stroudsburg, PA |
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 |
|---|---|---|---|
| Jul 18, 4:45 PM EDT | Severe Thunderstorm Watch | SPC | 6 hr |
The nearest sounding before it
Brookhaven, NY (KOKX), launched 12:00Z, 10.5 hours before the alert went out and 209 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
- 537 J/kg
- Mixed-layer CIN
- -119 J/kg
- Mixed-layer LCL
- 1397 m above ground
- 0-6 km bulk shear
- 31 kt
- 0-1 km storm-relative helicity
- 3 m²/s²
- 0-3 km storm-relative helicity
- 44 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- -0.0
The text
As transmitted, in the capitals the NWS used until 2016.
000 TTAA00 KPHL 182229 RRA TORPHL PAC089-182300- BULLETIN - EAS ACTIVATION REQUESTED TORNADO WARNING NATIONAL WEATHER SERVICE PHILADELPHIA/MOUNT HOLLY NJ 629 PM EDT FRI JUL 18 1997 THE NATIONAL WEATHER SERVICE IN MOUNT HOLLY NJ HAS ISSUED A TORNADO WARNING EFFECTIVE UNTIL 700 PM EDT FOR PEOPLE IN THE FOLLOWING LOCATION... IN PENNSYLVANIA ...SOUTHERN MONROE COUNTY A POSSIBLE TORNADO WAS SPOTTED NEAR SNYDERSVILLE IN SOUTHERN MONROE COUNTY MOVING EAST AROUND 35 MILES AN HOUR. DO NOT TRY TO OUTRUN THIS TORNADO WITH YOUR CAR OR OTHER VEHICLE. ABANDON CARS OR MOBILE HOMES FOR SHELTER IN A NEARBY REINFORCED BUILDING. AS A LAST RESORT...GET IN A CULVERT OR DITCH AND COVER YOUR HEAD WITH YOUR HANDS. IN A HOME OR BUSINESS...SEEK SHELTER IN A BASEMENT...OR AN INTERIOR ROOM ON THE LOWEST FLOOR POSSIBLE. STAY AWAY FROM WINDOWS. FOR THE LATEST STORM INFORMATION...PLEASE TUNE TO NOAA WEATHER RADIO...YOUR LOCAL RADIO OR TELEVISION STATIONS...OR YOUR CABLE TELEVINSION OUTLET. SP/
The office that day
Everything else NWS Philadelphia/Mount Holly issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jul 18, 5:41 PM EDT | Severe Thunderstorm Warning | PHI | Carbon | 49 min |
| Jul 18, 6:10 PM EDT | Severe Thunderstorm Warning | PHI | Lehigh, Monroe, Northampton | 45 min |
| Jul 18, 6:10 PM EDT | Severe Thunderstorm Warning | PHI | Berks | 45 min |
Nearby
Tornado Warnings in Pennsylvania, 1997Every tornado warning in 1997Tornadoes in 1997
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.