Alert archive / New Jersey / Severe Thunderstorm Warnings in 1997
Severe Thunderstorm Warning 38, NWS Philadelphia/Mount Holly
NWS Philadelphia/Mount Holly issued this severe thunderstorm warning at Jun 13, 1997, 1:19 PM EDT for Gloucester County, Salem County, New Jersey; New Castle County, Delaware. It was in force for 61 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
- Jun 13, 1997, 1:19 PM EDT (17:19 UTC)
- Expired
- Jun 13, 1997, 2:20 PM EDT
- In force
- 61 min
- Issued by
- NWS Philadelphia/Mount Holly
- Area
- Whole counties
Counties New Castle County, DE, Gloucester County, NJ, Salem County, NJ
The radar
The Dover AFB radar (KDOX), 89 km from the middle of the area, began a volume at 17:20 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 13, 1:20 PM EDT | Thunderstorm Wind | Wilmington, DE |
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 nearest sounding before it
Phillips Aaf/Abe, MD (KAPG), launched 12:00Z, 5.3 hours before the alert went out and 64 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
- 587 J/kg
- Mixed-layer CIN
- -42 J/kg
- Mixed-layer LCL
- 815 m above ground
- 0-6 km bulk shear
- 28 kt
- 0-1 km storm-relative helicity
- -9 m²/s²
- 0-3 km storm-relative helicity
- 56 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.7
The text
The text of this product is not in the archive. The NWS text archive before 2002 is incomplete.
The office that day
Everything else NWS Philadelphia/Mount Holly issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jun 13, 1:19 PM EDT | Flash Flood Warning | PHI | Gloucester, Salem | 61 min |
| Jun 13, 1:26 PM EDT | Severe Thunderstorm Warning | PHI | Middlesex | 34 min |
| Jun 13, 1:42 PM EDT | Severe Thunderstorm Warning | PHI | Mercer | 48 min |
| Jun 13, 1:52 PM EDT | Severe Thunderstorm Warning | PHI | Burlington, Monmouth | 48 min |
| Jun 13, 2:19 PM EDT | Flash Flood Warning | PHI | New Castle | 2 hr |
Nearby
Severe Thunderstorm Warnings in New Jersey, 1997Severe Thunderstorm Warnings in Delaware, 1997Every severe thunderstorm warning 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.