Alert archive / Pennsylvania / Severe Thunderstorm Warnings in 2007
Severe Thunderstorm Warning 30, NWS Philadelphia/Mount Holly
NWS Philadelphia/Mount Holly issued this severe thunderstorm warning at May 31, 2007, 5:43 PM EDT for Monroe County, Pennsylvania. It was in force for 40 min. 1 report 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, 5:43 PM EDT (21:43 UTC)
- Expired
- May 31, 2007, 6:23 PM EDT
- In force
- 40 min
- Issued by
- NWS Philadelphia/Mount Holly
- Area
- Counties, with a storm outline in the text
County Monroe County, PA
The radar
The Philadelphia radar (KDIX), 135 km from the middle of the area, began a volume at 21:45 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, 6:00 PM EDT | HAIL 0.88 | Brodheadsville, PA |
Local storm reports filed while the alert was in force, from inside its polygon or its counties.
The nearest sounding before it
Phillips Aaf/Abe, MD (KAPG), launched 12:00Z, 9.7 hours before the alert went out and 174 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
- 1342 m above ground
- 0-6 km bulk shear
- 11 kt
- 0-1 km storm-relative helicity
- 43 m²/s²
- 0-3 km storm-relative helicity
- 67 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 312144
SVRPHI
PAC089-312230-
/O.NEW.KPHI.SV.W.0030.070531T2143Z-070531T2230Z/
BULLETIN - EAS ACTIVATION REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE MOUNT HOLLY NJ
543 PM EDT THU MAY 31 2007
THE NATIONAL WEATHER SERVICE IN MOUNT HOLLY NJ HAS ISSUED A
* SEVERE THUNDERSTORM WARNING FOR...
SOUTH CENTRAL MONROE COUNTY IN NORTHEAST PENNSYLVANIA...
* UNTIL 630 PM EDT
* AT 540 PM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
SEVERE THUNDERSTORM OVER SOUTHERN MONROE COUNTY. THIS STORM WAS
LOCATED NEAR BRODHEADSVILLE... OR ABOUT 20 MILES NORTH OF
BETHLEHEM...AND MOVING SOUTHEAST AT 5 TO 10 MPH.
* THE SEVERE THUNDERSTORM WILL BE MOVING OVER RURAL SOUTHERN MONROE
COUNTY THROUGH 630 PM EDT.
LAT...LON 4099 7540 4093 7547 4083 7540 4087 7530
4094 7520
$$
JRP2 follow-up statements
000
WWUS51 KPHI 312205
SVSPHI
SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE MOUNT HOLLY NJ
604 PM EDT THU MAY 31 2007
PAC089-312230-
/O.CON.KPHI.SV.W.0030.000000T0000Z-070531T2230Z/
MONROE PA-
604 PM EDT THU MAY 31 2007
...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 630 PM EDT
FOR SOUTH CENTRAL MONROE COUNTY...
AT 600 PM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR CONTINUED TO
INDICATE A SEVERE THUNDERSTORM CAPABLE OF PRODUCING NICKEL SIZE HAIL
AS WELL AS LOCALIZED WIND GUSTS AROUND 60 MILES AN HOUR. THIS STORM
WAS LOCATED ABOUT 6 MILES SOUTHEAST OF BRODHEADSVILLE...OR ABOUT 18
MILES NORTH OF BETHLEHEM...DRIFTING SOUTHEAST AROUND 5 MPH.
THE SEVERE THUNDERSTORM WILL OTHERWISE REMAIN OVER MAINLY RURAL AREAS
OF THE INDICATED COUNTY.
LAT...LON 4099 7540 4093 7547 4083 7540 4087 7530
4094 7520
$$
JRP000
WWUS51 KPHI 312223
SVSPHI
SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE MOUNT HOLLY NJ
620 PM EDT THU MAY 31 2007
PAC089-312230-
/O.CAN.KPHI.SV.W.0030.000000T0000Z-070531T2230Z/
MONROE PA-
620 PM EDT THU MAY 31 2007
...THE SEVERE THUNDERSTORM WARNING FOR SOUTH CENTRAL MONROE COUNTY IS
CANCELLED...
THE THUNDERSTORM HAS WEAKENED AND NO LONGER POSES A THREAT FOR
SEVERE WEATHER. HOWEVER, HEAVY RAIN...SMALL HAIL...SOME
LIGHTNING...AND LOCALLY GUSTY WINDS WILL STILL OCCUR OVER FAR
SOUTHEASTERN MONROE COUNTY THROUGH 645 PM.
LAT...LON 4099 7540 4093 7547 4083 7540 4087 7530
4094 7520
$$
JRPThe office that day
Everything else NWS Philadelphia/Mount Holly issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| May 31, 6:09 PM EDT | Flash Flood Warning | PHI | Monroe | 2 hr |
| May 31, 7:39 PM EDT | Severe Thunderstorm Warning | PHI | Berks, Lehigh | 51 min |
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.