Alert archive / Delaware / Severe Thunderstorm Warnings in 2015
Severe Thunderstorm Warning 5, NWS Philadelphia/Mount Holly
NWS Philadelphia/Mount Holly issued this severe thunderstorm warning at Apr 22, 2015, 4:05 PM EDT for Kent County, Sussex County, Delaware; Cape May County, New Jersey. It was in force for 25 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
- Apr 22, 2015, 4:05 PM EDT (20:05 UTC)
- Expired
- Apr 22, 2015, 4:30 PM EDT
- In force
- 25 min
- Issued by
- NWS Philadelphia/Mount Holly
- Area
- Storm-based polygon
Counties Kent County, DE, Sussex County, DE, Cape May County, NJ
The radar
The Dover AFB radar (KDOX), 27 km from the middle of the area, began a volume at 20:08 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 |
|---|---|---|---|
| Apr 22, 4:20 PM EDT | TSTM WND GST 45 | Dewey Beach, DE |
Local storm reports filed while the alert was in force, from inside its polygon or its counties.
The nearest sounding before it
Wallops Is Stn, VA (KWAL), launched 12:00Z, 8.1 hours before the alert went out and 97 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
- 2522 m above ground
- 0-6 km bulk shear
- 64 kt
- 0-1 km storm-relative helicity
- 60 m²/s²
- 0-3 km storm-relative helicity
- 56 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted, in the capitals the NWS used until 2016.
162
WUUS51 KPHI 222005
SVRPHI
DEC001-005-NJC009-222030-
/O.NEW.KPHI.SV.W.0005.150422T2005Z-150422T2030Z/
BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE MOUNT HOLLY NJ
405 PM EDT WED APR 22 2015
THE NATIONAL WEATHER SERVICE IN MOUNT HOLLY NJ HAS ISSUED A
* SEVERE THUNDERSTORM WARNING FOR...
SUSSEX COUNTY IN CENTRAL DELAWARE...
SOUTHEASTERN KENT COUNTY IN CENTRAL DELAWARE...
CAPE MAY COUNTY IN SOUTHERN NEW JERSEY...
* UNTIL 430 PM EDT
* AT 404 PM EDT...DOPPLER RADAR INDICATED A LINE OF SEVERE
THUNDERSTORMS CAPABLE OF PRODUCING DAMAGING WINDS IN EXCESS OF 60
MPH. THESE STORMS WERE LOCATED ALONG A LINE EXTENDING FROM 7 MILES
NORTHWEST OF LEWES TO NEAR SEAFORD...AND MOVING EAST AT 40 MPH.
* LOCATIONS IMPACTED INCLUDE...
OCEAN CITY...GEORGETOWN...CAPE MAY...MILFORD...SEAFORD...NORTH
WILDWOOD...MILLSBORO...LAUREL...WILDWOOD CREST...LEWES...MILTON...
SELBYVILLE...SEA ISLE CITY...BRIDGEVILLE...DELMAR...AVALON...WEST
CAPE MAY...STONE HARBOR...DAGSBORO AND MILLVILLE.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
STRONG WINDS ARE OCCURRING IN SHOWERS WITH LIGHT PRECIPITATION AND
EVEN AHEAD OF THE SHOWERS WITH THE OUTFLOW BOUNDARY. OCCASIONAL
LIGHTNING STRIKES ARE BEING REPORTED WITH THESE STORMS. SEEK SHELTER
NOW INSIDE A STURDY STRUCTURE AND STAY AWAY FROM WINDOWS.
&&
LAT...LON 3846 7566 3875 7568 3898 7540 3902 7534
3878 7512 3917 7490 3925 7462 3924 7461
3899 7479 3879 7508 3867 7507 3867 7508
3864 7513 3866 7507 3861 7506 3859 7521
3860 7506 3845 7505
TIME...MOT...LOC 2004Z 275DEG 30KT 3887 7523 3867 7558
$$
JRK1 follow-up statement
076
WWUS51 KPHI 222039
SVSPHI
SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE MOUNT HOLLY NJ
439 PM EDT WED APR 22 2015
DEC001-005-NJC009-222048-
/O.EXP.KPHI.SV.W.0005.000000T0000Z-150422T2030Z/
SUSSEX DE-KENT DE-CAPE MAY NJ-
439 PM EDT WED APR 22 2015
...THE SEVERE THUNDERSTORM WARNING FOR SUSSEX...SOUTHEASTERN KENT AND
CAPE MAY COUNTIES HAS EXPIRED...
THE STORMS WHICH PROMPTED THE WARNING HAVE MOVED OUT OF THE AREA.
THEREFORE THE WARNING HAS BEEN ALLOWED TO EXPIRE.
LAT...LON 3846 7566 3875 7568 3898 7540 3902 7534
3878 7512 3917 7490 3925 7462 3924 7461
3899 7479 3879 7508 3867 7507 3867 7508
3864 7513 3866 7507 3861 7506 3859 7521
3860 7506 3845 7505
TIME...MOT...LOC 2037Z 275DEG 30KT 3887 7523 3867 7558
$$
JRKThe office that day
Everything else NWS Philadelphia/Mount Holly issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Apr 22, 1:33 PM EDT | Special Weather Statement | PHI | New Castle | 57 min |
| Apr 22, 2:22 PM EDT | Special Weather Statement | PHI | Kent, New Castle | 113 min |
| Apr 22, 1:58 PM EDT | Special Marine Warning | PHI | 2 hr | |
| Apr 22, 3:00 PM EDT | Special Marine Warning | PHI | 2 hr | |
| Apr 22, 3:09 PM EDT | Severe Thunderstorm Warning | PHI | Atlantic, Burlington, Camden, Cumberland, Gloucester, Mercer and 4 more | 51 min |
| Apr 22, 3:55 PM EDT | Severe Thunderstorm Warning | PHI | Monmouth, Ocean | 20 min |
| Apr 22, 4:00 PM EDT | Special Marine Warning | PHI | 60 min | |
| Apr 22, 4:56 PM EDT | Special Marine Warning | PHI | 64 min |
Nearby
Severe Thunderstorm Warnings in Delaware, 2015Severe Thunderstorm Warnings in New Jersey, 2015Every severe thunderstorm warning in 2015
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.