Alert archive / Pennsylvania / Severe Thunderstorm Warnings in 2001
Severe Thunderstorm Warning 51, NWS Philadelphia/Mount Holly
NWS Philadelphia/Mount Holly issued this severe thunderstorm warning at Jun 22, 2001, 2:07 PM EDT for Lehigh County, Pennsylvania. It was in force for 23 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, 2:07 PM EDT (18:07 UTC)
- Expired
- Jun 22, 2001, 2:30 PM EDT
- In force
- 23 min
- Issued by
- NWS Philadelphia/Mount Holly
- Area
- Whole counties
County Lehigh County, PA
What was reported inside it
| Time | Report | Where | Remark |
|---|---|---|---|
| Jun 22, 2:10 PM EDT | Thunderstorm Wind 50 E | Countywide, 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, 6.1 hours before the alert went out and 134 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 221807 SVRPHI PAC077-221830- BULLETIN - EAS ACTIVATION REQUESTED SEVERE THUNDERSTORM WARNING NATIONAL WEATHER SERVICE MOUNT HOLLY NJ 207 PM EDT FRI JUN 22 2001 THE NATIONAL WEATHER SERVICE IN MOUNT HOLLY NJ HAS ISSUED A * SEVERE THUNDERSTORM WARNING FOR... CENTRAL LEHIGH COUNTY IN EASTERN PENNSYLVANIA. * UNTIL 230 PM EDT. * AT 202 PM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A SEVERE THUNDERSTORM... 6 MILES SOUTH OF SCHNECKSVILLE...MOVING NORTHEAST AT 15 MPH. * THE SEVERE THUNDERSTORM WILL BE NEAR... SCHNECKSVILLE AT 215 PM. ALLENTOWN AT 230 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 4063 7579 4052 7563 4060 7545 4071 7557 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, 2:12 PM EDT | Severe Thunderstorm Warning | PHI | Berks | 33 min |
| Jun 22, 2:43 PM EDT | Severe Thunderstorm Warning | PHI | Northampton | 47 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.