Alert archive / Pennsylvania / Severe Thunderstorm Warnings in 2009
Severe Thunderstorm Warning 2, NWS Philadelphia/Mount Holly
NWS Philadelphia/Mount Holly issued this severe thunderstorm warning at Mar 29, 2009, 5:11 PM EDT for Carbon County, Lehigh County, Pennsylvania. It was in force for 64 min. 4 reports came from inside the area while it was in force.
The area
The outline as issued, with what was reported inside it.
The facts
- Issued
- Mar 29, 2009, 5:11 PM EDT (21:11 UTC)
- Expired
- Mar 29, 2009, 6:15 PM EDT
- In force
- 64 min
- Issued by
- NWS Philadelphia/Mount Holly
- Area
- Storm-based polygon
Counties Carbon County, PA, Lehigh County, PA
The radar
The Philadelphia radar (KDIX), 147 km from the middle of the area, began a volume at 21:12 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 |
|---|---|---|---|
| Mar 29, 5:15 PM EDT | HAIL 0.88 | Summit Hill, PA | NICKEL SIZE HAIL REPORTED IN SUMMIT HILL. |
| Mar 29, 5:20 PM EDT | HAIL 1.5 | Nesquehoning, PA | 1.5 INCH HAIL REPORTED IN NESQUEHONING. |
| Mar 29, 5:25 PM EDT | HAIL 1 | Lehighton, PA | QUARTER SIZE HAIL REPORTED IN LEHIGHTON. BROKEN WINDOWS ALSO REPORTED. |
| Mar 29, 5:35 PM EDT | HAIL 0.88 | Jim Thorpe, PA | NICKEL SIZE HAIL REPORTED IN JIM THORPE. |
Local storm reports filed while the alert was in force, from inside its polygon or its counties.
The nearest sounding before it
Brookhaven, NY (KOKX), launched 12:00Z, 9.2 hours before the alert went out and 238 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
- 424 m above ground
- 0-6 km bulk shear
- 48 kt
- 0-1 km storm-relative helicity
- 474 m²/s²
- 0-3 km storm-relative helicity
- 554 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.2
The text
As transmitted, in the capitals the NWS used until 2016.
000
WUUS51 KPHI 292111
SVRPHI
PAC025-077-292215-
/O.NEW.KPHI.SV.W.0002.090329T2111Z-090329T2215Z/
BULLETIN - EAS ACTIVATION REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE MOUNT HOLLY NJ
511 PM EDT SUN MAR 29 2009
THE NATIONAL WEATHER SERVICE IN MOUNT HOLLY NJ HAS ISSUED A
* SEVERE THUNDERSTORM WARNING FOR...
NORTHWESTERN LEHIGH COUNTY IN EASTERN PENNSYLVANIA...
CARBON COUNTY IN NORTHEAST PENNSYLVANIA...
THIS INCLUDES THE CITY OF LEHIGHTON...
* UNTIL 615 PM EDT
* AT 508 PM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
SEVERE THUNDERSTORM CAPABLE OF PRODUCING QUARTER SIZE HAIL...AND
DAMAGING WINDS IN EXCESS OF 60 MPH. THIS STORM WAS LOCATED NEAR
NEW MAHONING...OR 9 MILES SOUTHWEST OF LEHIGHTON...AND MOVING
NORTHEAST AT 30 MPH.
* THE SEVERE THUNDERSTORM WILL BE NEAR...
NESQUEHONING BY 525 PM EDT...
LEHIGHTON...JIM THORPE AND 8 MILES SOUTHEAST OF WEATHERLY BY 530 PM
EDT...
6 MILES NORTHWEST OF PALMERTON BY 535 PM EDT...
BELTZVILLE STATE PARK BY 540 PM EDT...
PENN FOREST RESERVOIR AND CHRISTMANS BY 550 PM EDT...
ALBRIGHTSVILLE BY 555 PM EDT...
PRECAUTIONARY/PREPAREDNESS ACTIONS...
THIS IS A DANGEROUS STORM. IF YOU ARE IN ITS PATH...PREPARE
IMMEDIATELY FOR DAMAGING WINDS...DESTRUCTIVE HAIL...AND DEADLY CLOUD
TO GROUND LIGHTNING. PEOPLE OUTSIDE SHOULD MOVE TO A SHELTER...
PREFERABLY INSIDE A STRONG BUILDING BUT AWAY FROM WINDOWS.
&&
LAT...LON 4095 7556 4094 7557 4085 7552 4080 7558
4079 7562 4077 7562 4064 7581 4070 7586
4074 7578 4081 7590 4087 7596 4110 7562
TIME...MOT...LOC 2111Z 225DEG 25KT 4076 7584
$$
STAUBERThe office that day
Everything else NWS Philadelphia/Mount Holly issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Mar 29, 4:41 PM EDT | Severe Thunderstorm Warning | PHI | Berks | 94 min |
| Mar 29, 4:58 PM EDT | Tornado Warning | PHI | Berks | 62 min |
| Mar 29, 5:27 PM EDT | Severe Thunderstorm Warning | PHI | Lehigh | 63 min |
| Mar 29, 5:55 PM EDT | Severe Thunderstorm Warning | PHI | Bucks, Chester, Lehigh, Montgomery, Northampton | 50 min |
| Mar 29, 6:11 PM EDT | Severe Thunderstorm Warning | PHI | Chester, Delaware, Montgomery, Philadelphia | 64 min |
| Mar 29, 7:09 PM EDT | Severe Thunderstorm Warning | PHI | Bucks | 51 min |
Nearby
Severe Thunderstorm Warnings in Pennsylvania, 2009Every severe thunderstorm warning in 2009
Sources
The product and its follow-ups from the Iowa Environmental Mesonet's archive of National Weather Service and Storm Prediction Center text; local storm reports from the same archive; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.