Alert archive / Pennsylvania / Severe Thunderstorm Warnings in 2007
Severe Thunderstorm Warning 32, NWS Philadelphia/Mount Holly
NWS Philadelphia/Mount Holly issued this severe thunderstorm warning at May 31, 2007, 8:30 PM EDT for Berks County, Lehigh County, Pennsylvania. It was in force for 45 min. 2 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
- May 31, 2007, 8:30 PM EDT (00:30 UTC)
- Expired
- May 31, 2007, 9:15 PM EDT
- In force
- 45 min
- Issued by
- NWS Philadelphia/Mount Holly
- Area
- Counties, with a storm outline in the text
Counties Berks County, PA, Lehigh County, PA
The radar
The Philadelphia radar (KDIX), 124 km from the middle of the area, began a volume at 00:30 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 |
|---|---|---|---|
| May 31, 8:30 PM EDT | TSTM WND DMG | 7 Nw Alburtis, PA | TREES AND ELECTRIC POLES DOWN NEAR THE INTERSECTION OF OLD ROUTE 22 AND ROUTE 863 NEAR NEW SMITHVILLE IN WEISENBERG TOWNSHIP. |
| May 31, 8:30 PM EDT | HAIL 0.75 | 7 Nw Alburtis, PA | HAIL COVERED THE GROUND IN NEW SMITHVILLE, PA. |
Local storm reports filed while the alert was in force, from inside its polygon or its counties.
The nearest sounding before it
Washington/Dulle, VA (KIAD), launched 00:00Z, 0.5 hours before the alert went out and 231 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
- 202 J/kg
- Mixed-layer CIN
- -37 J/kg
- Mixed-layer LCL
- 1681 m above ground
- 0-6 km bulk shear
- 7 kt
- 0-1 km storm-relative helicity
- 19 m²/s²
- 0-3 km storm-relative helicity
- 32 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted, in the capitals the NWS used until 2016.
000 WUUS51 KPHI 010031 SVRPHI PAC011-077-010115- /O.NEW.KPHI.SV.W.0032.070601T0030Z-070601T0115Z/ BULLETIN - EAS ACTIVATION REQUESTED SEVERE THUNDERSTORM WARNING NATIONAL WEATHER SERVICE MOUNT HOLLY NJ 830 PM EDT THU MAY 31 2007 THE NATIONAL WEATHER SERVICE IN MOUNT HOLLY NJ HAS ISSUED A * SEVERE THUNDERSTORM WARNING FOR... EAST CENTRAL BERKS COUNTY IN EASTERN PENNSYLVANIA... SOUTHERN LEHIGH COUNTY IN EASTERN PENNSYLVANIA... * UNTIL 915 PM EDT * AT 826 PM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A SEVERE THUNDERSTORM CAPABLE OF PRODUCING PENNY SIZE HAIL...AND DAMAGING WINDS AROUND 60 MPH. THIS STORM WAS LOCATED NEAR KUTZTOWN...OR ABOUT 12 MILES WEST OF ALLENTOWN...AND MOVING SOUTHEAST AT 5 TO 10 MPH. * THE SEVERE THUNDERSTORM WILL BE NEAR... ANCIENT OAKS BY 900 PM EDT... EMMAUS BY 915 PM EDT... IN ADDITION...A FLASH FLOOD WARNING REMAINS IN EFFECT FOR THESE AREAS THROUGH 10:15 PM. THUNDERSTORMS ARE CAPABLE OF PRODUCING HEAVY RAINFALL WHICH MAY RESULT IN LOCALIZED AREAS OF FLOODING. DO NOT DRIVE IN AREAS WHERE WATER IS CROSSING THE ROAD. LAT...LON 4061 7569 4052 7582 4041 7558 4052 7548 $$ JRP
The office that day
Everything else NWS Philadelphia/Mount Holly issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| May 31, 8:19 PM EDT | Flash Flood Warning | PHI | Berks, Lehigh | 116 min |
| May 31, 8:50 PM EDT | Severe Thunderstorm Warning | PHI | Lehigh | 40 min |
| May 31, 9:33 PM EDT | Severe Thunderstorm Warning | PHI | Lehigh | 34 min |
| May 31, 9:50 PM EDT | Flash Flood Warning | PHI | Lehigh | 3 hr |
| May 31, 11:27 PM EDT | Flash Flood Warning | PHI | Lehigh | 93 min |
| Jun 1, 2:36 PM EDT | Severe Thunderstorm Warning | PHI | Monroe | 54 min |
| Jun 1, 3:37 PM EDT | Severe Thunderstorm Warning | PHI | Monroe | 38 min |
| Jun 1, 3:53 PM EDT | Severe Thunderstorm Warning | PHI | Northampton | 82 min |
| Jun 1, 4:24 PM EDT | Severe Thunderstorm Warning | PHI | Monroe | 66 min |
| Jun 1, 4:31 PM EDT | Flash Flood Warning | PHI | Monroe | 3 hr |
| Jun 1, 5:33 PM EDT | Severe Thunderstorm Warning | PHI | Berks | 87 min |
| Jun 1, 6:00 PM EDT | Flash Flood Warning | PHI | Berks | 3 hr |
| Jun 1, 6:39 PM EDT | Severe Thunderstorm Warning | PHI | Lehigh | 58 min |
| Jun 1, 6:50 PM EDT | Severe Thunderstorm Warning | PHI | Berks | 62 min |
| Jun 1, 7:02 PM EDT | Severe Thunderstorm Warning | PHI | Bucks | 88 min |
| Jun 1, 7:03 PM EDT | Flash Flood Warning | PHI | Lehigh | 3 hr |
Nearby
Severe Thunderstorm Warnings in Pennsylvania, 2007Every severe thunderstorm warning in 2007
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.