Alert archive / Pennsylvania / Severe Thunderstorm Warnings in 2001
Severe Thunderstorm Warning 53, NWS Philadelphia/Mount Holly
NWS Philadelphia/Mount Holly issued this severe thunderstorm warning at Jun 22, 2001, 2:43 PM EDT for Northampton County, Pennsylvania. It was in force for 47 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 22, 2001, 2:43 PM EDT (18:43 UTC)
- Expired
- Jun 22, 2001, 3:30 PM EDT
- In force
- 47 min
- Issued by
- NWS Philadelphia/Mount Holly
- Area
- Whole counties
County Northampton County, PA
What was reported inside it
| Time | Report | Where | Remark |
|---|---|---|---|
| Jun 22, 2:50 PM EDT | Thunderstorm Wind 50 E | Bath, 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 |
|---|---|---|---|
| Jun 22, 2:00 PM EDT | Severe Thunderstorm Watch | SPC | 5 hr |
The nearest sounding before it
Phillips Aaf/Abe, MD (KAPG), launched 12:00Z, 6.7 hours before the alert went out and 158 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
- 578 J/kg
- Mixed-layer CIN
- -12 J/kg
- Mixed-layer LCL
- 563 m above ground
- 0-6 km bulk shear
- 20 kt
- 0-1 km storm-relative helicity
- 61 m²/s²
- 0-3 km storm-relative helicity
- 78 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.4
The text
As transmitted, in the capitals the NWS used until 2016.
000 WUUS51 KPHI 221843 SVRPHI PAC095-221930- BULLETIN - EAS ACTIVATION REQUESTED SEVERE THUNDERSTORM WARNING NATIONAL WEATHER SERVICE MOUNT HOLLY NJ 243 PM EDT FRI JUN 22 2001 THE NATIONAL WEATHER SERVICE IN MOUNT HOLLY NJ HAS ISSUED A * SEVERE THUNDERSTORM WARNING FOR... CENTRAL NORTHAMPTON COUNTY IN EASTERN PENNSYLVANIA. * UNTIL 330 PM EDT. * AT 238 PM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A SEVERE THUNDERSTORM... 5 MILES SOUTHWEST OF BATH...MOVING NORTHEAST AT 20 MPH. * THE SEVERE THUNDERSTORM WILL BE NEAR... BATH AT 250 PM. NAZARETH AT 300 PM. BELFAST AT 310 PM. 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 700 PM FRIDAY EVENING FOR SOUTHEASTERN PENNSYLVANIA. $$ LAT...LON 4074 7547 4065 7535 4070 7523 4084 7529 GSS
The office that day
Everything else NWS Philadelphia/Mount Holly issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jun 22, 12:59 PM EDT | Flash Flood Warning | PHI | Berks | 2 hr |
| Jun 22, 1:30 PM EDT | Severe Thunderstorm Warning | PHI | Berks | 30 min |
| Jun 22, 1:53 PM EDT | Severe Thunderstorm Warning | PHI | Northampton | 37 min |
| Jun 22, 2:07 PM EDT | Severe Thunderstorm Warning | PHI | Lehigh | 23 min |
| Jun 22, 2:12 PM EDT | Severe Thunderstorm Warning | PHI | Berks | 33 min |
| Jun 22, 3:00 PM EDT | Severe Thunderstorm Warning | PHI | Berks | 45 min |
| Jun 22, 3:21 PM EDT | Flash Flood Warning | PHI | Berks | 3 hr |
| Jun 22, 3:54 PM EDT | Flash Flood Warning | PHI | Lehigh, Northampton | 3 hr |
| Jun 22, 6:08 PM EDT | Flash Flood Warning | PHI | Berks | 2 hr |
| Jun 22, 6:48 PM EDT | Flash Flood Warning | PHI | Chester | 117 min |
| Jun 22, 6:58 PM EDT | Flash Flood Warning | PHI | Lehigh | 2 hr |
Nearby
Severe Thunderstorm Warnings in Pennsylvania, 2001Every severe thunderstorm warning in 2001
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.