Alert archive / New Jersey / Severe Thunderstorm Warnings in 2010
Severe Thunderstorm Warning 48, NWS Philadelphia/Mount Holly
NWS Philadelphia/Mount Holly issued this severe thunderstorm warning at May 27, 2010, 8:38 PM EDT for Salem County, New Jersey; New Castle County, Delaware. It was in force for 37 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 27, 2010, 8:38 PM EDT (00:38 UTC)
- Expired
- May 27, 2010, 9:15 PM EDT
- In force
- 37 min
- Issued by
- NWS Philadelphia/Mount Holly
- Area
- Storm-based polygon
Counties New Castle County, DE, Salem County, NJ
The radar
The Dover AFB radar (KDOX), 96 km from the middle of the area, began a volume at 00:39 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 27, 8:38 PM EDT | HAIL 0.88 | N Wilmington, DE | NICKEL TO DIME SIZED HAIL COVERING THE GROUND. |
Local storm reports filed while the alert was in force, from inside its polygon or its counties.
The watch it was issued in
The SPC watch in force over the same counties when this warning went out.
| Issued | Product | Office | Lasted |
|---|---|---|---|
| May 27, 1:23 PM EDT | Severe Thunderstorm Watch | SPC | 8 hr |
The nearest sounding before it
Washington/Dulle, VA (KIAD), launched 00:00Z, 0.6 hours before the alert went out and 184 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
- 2438 J/kg
- Mixed-layer CIN
- -3 J/kg
- Mixed-layer LCL
- 1750 m above ground
- 0-6 km bulk shear
- 15 kt
- 0-1 km storm-relative helicity
- -2 m²/s²
- 0-3 km storm-relative helicity
- 45 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted, in the capitals the NWS used until 2016.
011
WUUS51 KPHI 280038
SVRPHI
DEC003-NJC033-280115-
/O.NEW.KPHI.SV.W.0048.100528T0038Z-100528T0115Z/
BULLETIN - EAS ACTIVATION REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE MOUNT HOLLY NJ
838 PM EDT THU MAY 27 2010
THE NATIONAL WEATHER SERVICE IN MOUNT HOLLY NJ HAS ISSUED A
* SEVERE THUNDERSTORM WARNING FOR...
NORTHEASTERN NEW CASTLE COUNTY IN NORTHERN DELAWARE...
THIS INCLUDES THE CITY OF WILMINGTON...
NORTHWESTERN SALEM COUNTY IN SOUTHERN NEW JERSEY...
* UNTIL 915 PM EDT
* AT 837 PM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
SEVERE THUNDERSTORM CAPABLE OF PRODUCING QUARTER SIZE HAIL. THIS
STORM WAS LOCATED NEAR WILMINGTON...AND MOVING SOUTHEAST AT 20 MPH.
* THE SEVERE THUNDERSTORM WILL BE NEAR...
PENNS GROVE AROUND 845 PM EDT...
CARNEYS POINT AROUND 850 PM EDT...
PENNSVILLE AROUND 855 PM EDT...
WOODSTOWN AROUND 910 PM EDT...
SALEM AROUND 915 PM EDT...
PRECAUTIONARY/PREPAREDNESS ACTIONS...
HAIL UP TO THE SIZE OF QUARTERS HAS BEEN REPORTED IN TALLEYWILLE
DELAWARE WITH THIS STORM. IF YOU ARE IN THE PATH OF THE STORM...TAKE
IMMEDIATE ACTION TO PROTECT LIFE AND PROPERTY.
A SEVERE THUNDERSTORM WATCH REMAINS IN EFFECT UNTIL 900 PM EDT
THURSDAY EVENING FOR NORTHERN DELAWARE AND NORTHEASTERN MARYLAND AND
NEW JERSEY AND EASTERN PENNSYLVANIA.
&&
LAT...LON 3982 7547 3961 7525 3953 7552 3964 7555
3967 7552 3969 7552 3966 7555 3979 7559
TIME...MOT...LOC 0038Z 333DEG 18KT 3976 7551
$$
PO1 follow-up statement
566 WWUS51 KPHI 280106 SVSPHI SEVERE WEATHER STATEMENT NATIONAL WEATHER SERVICE MOUNT HOLLY NJ 906 PM EDT THU MAY 27 2010 DEC003-280116- /O.CAN.KPHI.SV.W.0048.000000T0000Z-100528T0115Z/ NEW CASTLE DE- 906 PM EDT THU MAY 27 2010 ...THE SEVERE THUNDERSTORM WARNING FOR NORTHEASTERN NEW CASTLE COUNTY IS CANCELLED... LAT...LON 3967 7549 3970 7542 3960 7529 3954 7549 TIME...MOT...LOC 0106Z 333DEG 18KT 3964 7543 $$ NJC033-280115- /O.CON.KPHI.SV.W.0048.000000T0000Z-100528T0115Z/ SALEM NJ- 906 PM EDT THU MAY 27 2010 ...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 915 PM EDT FOR CENTRAL SALEM COUNTY... AT 902 PM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR CONTINUED TO INDICATE A SEVERE THUNDERSTORM CAPABLE OF PRODUCING QUARTER SIZE HAIL. THIS STORM WAS LOCATED 6 MILES NORTH OF SALEM...OR 7 MILES SOUTHEAST OF WILMINGTON...MOVING SOUTHEAST AT 20 MPH. LAT...LON 3967 7549 3970 7542 3960 7529 3954 7549 TIME...MOT...LOC 0106Z 333DEG 18KT 3964 7543 $$ PO
The office that day
Everything else NWS Philadelphia/Mount Holly issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| May 27, 10:04 PM EDT | Special Weather Statement | PHI | Atlantic, Cape May, Cumberland, Salem | 56 min |
| May 27, 10:30 PM EDT | Special Marine Warning | PHI | 60 min | |
| May 27, 11:46 PM EDT | Coastal Flood Advisory | PHI | Camden, Gloucester, Salem | 4 hr |
| May 28, 1:11 AM EDT | Areal Flood Advisory | PHI | Kent, New Castle, Sussex | 3 hr |
Nearby
Severe Thunderstorm Warnings in New Jersey, 2010Severe Thunderstorm Warnings in Delaware, 2010Every severe thunderstorm warning in 2010
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.