Alert archive / Delaware / Severe Thunderstorm Warnings in 2014
Severe Thunderstorm Warning 44, NWS Philadelphia/Mount Holly
NWS Philadelphia/Mount Holly issued this severe thunderstorm warning at May 27, 2014, 7:55 PM EDT for Sussex County, Delaware. It was in force for 65 min. No storm report in the archive falls inside the area while it was in force.
The area
The outline as issued.
The facts
- Issued
- May 27, 2014, 7:55 PM EDT (23:55 UTC)
- Expired
- May 27, 2014, 9:00 PM EDT
- In force
- 65 min
- Issued by
- NWS Philadelphia/Mount Holly
- Area
- Storm-based polygon
County Sussex County, DE
The radar
The Dover AFB radar (KDOX), 20 km from the middle of the area, began a volume at 23:55 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.
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, 5:30 PM EDT | Severe Thunderstorm Watch | SPC | 3 hr |
The nearest sounding before it
Wallops Is Stn, VA (KWAL), launched 12:00Z, 11.9 hours before the alert went out and 88 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
- 1 J/kg
- Mixed-layer CIN
- No buoyant parcel
- Mixed-layer LCL
- 1618 m above ground
- 0-6 km bulk shear
- 19 kt
- 0-1 km storm-relative helicity
- 38 m²/s²
- 0-3 km storm-relative helicity
- 45 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.1
The text
As transmitted, in the capitals the NWS used until 2016.
950
WUUS51 KPHI 272355
SVRPHI
DEC005-280100-
/O.NEW.KPHI.SV.W.0044.140527T2355Z-140528T0100Z/
BULLETIN - EAS ACTIVATION REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE MOUNT HOLLY NJ
755 PM EDT TUE MAY 27 2014
THE NATIONAL WEATHER SERVICE IN MOUNT HOLLY NJ HAS ISSUED A
* SEVERE THUNDERSTORM WARNING FOR...
SUSSEX COUNTY IN SOUTHERN DELAWARE...
* UNTIL 900 PM EDT
* AT 750 PM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
LINE OF SEVERE THUNDERSTORMS. THESE SEVERE STORMS EXTENDED FROM
SLAUGHTER BEACH TO MILFORD TO GREENWOOD TO FEDERALSBURG...MOVING
SOUTHEAST AT 30 MPH. THESE STORMS ARE CAPABLE OF PRODUCING DAMAGING
WINDS TO 60 MPH.
* LOCATIONS IMPACTED INCLUDE...
ELLENDALE...
SEAFORD...
GEORGETOWN...
SYCAMORE...
CAPE HENLOPEN STATE PARK...
REHOBOTH BEACH...
MILLSBORO...
DAGSBORO...
MILLVILLE...
PRECAUTIONARY/PREPAREDNESS ACTIONS...
VERY HEAVY RAIN WILL ALSO OCCUR WITH THIS LINE OF SEVERE
THUNDERSTORMS...WHICH COULD FLOOD LOW LYING AREAS QUICKLY AND COVER
ROADS WITH WATER. DO NOT DRIVE INTO AREAS WHERE WATER COVERS THE
ROAD.
FREQUENT CLOUD TO GROUND LIGHTNING IS OCCURRING WITH THIS LINE OF
SEVERE THUNDERSTORMS. WHEN THUNDER ROARS...MOVE INDOORS! REMEMBER...
IF YOU CAN HEAR THUNDER...YOU ARE CLOSE ENOUGH TO BE STRUCK BY
LIGHTNING.
A SEVERE THUNDERSTORM WATCH REMAINS IN EFFECT UNTIL 900 PM EDT
TUESDAY EVENING FOR NORTHEASTERN MARYLAND. A SEVERE THUNDERSTORM
WATCH ALSO REMAINS IN EFFECT UNTIL MIDNIGHT EDT WEDNESDAY MORNING FOR
DELAWARE AND SOUTHERN NEW JERSEY.
&&
LAT...LON 3868 7571 3869 7571 3894 7531 3893 7532
3881 7518 3879 7515 3879 7511 3881 7510
3880 7508 3860 7504 3859 7505 3845 7504
3845 7515
TIME...MOT...LOC 2355Z 291DEG 25KT 3892 7521 3887 7540
3878 7550 3871 7574
$$
FORECASTER: GORSE1 follow-up statement
084
WWUS51 KPHI 280024
SVSPHI
SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE MOUNT HOLLY NJ
824 PM EDT TUE MAY 27 2014
DEC005-280033-
/O.CAN.KPHI.SV.W.0044.000000T0000Z-140528T0100Z/
SUSSEX DE-
824 PM EDT TUE MAY 27 2014
...THE SEVERE THUNDERSTORM WARNING FOR SUSSEX COUNTY IS CANCELLED...
THE STORM HAS WEAKENED AND THEREFORE THE WARNING HAS BEEN CANCELLED.
LAT...LON 3868 7571 3869 7571 3894 7531 3893 7532
3881 7518 3879 7515 3879 7511 3881 7510
3880 7508 3860 7504 3859 7505 3845 7504
3845 7515
TIME...MOT...LOC 0023Z 291DEG 25KT 3885 7498 3880 7517
3871 7527 3864 7551
$$
GORSEThe office that day
Everything else NWS Philadelphia/Mount Holly issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| May 27, 5:52 PM EDT | Severe Thunderstorm Warning | PHI | New Castle | 53 min |
| May 27, 5:56 PM EDT | Severe Thunderstorm Warning | PHI | New Castle | 64 min |
| May 27, 6:19 PM EDT | Areal Flood Advisory | PHI | New Castle | 3 hr |
| May 27, 6:49 PM EDT | Special Weather Statement | PHI | Kent | 56 min |
| May 27, 7:15 PM EDT | Severe Thunderstorm Warning | PHI | Kent, Sussex | 60 min |
Nearby
Severe Thunderstorm Warnings in Delaware, 2014Every severe thunderstorm warning in 2014
Sources
The product and its follow-ups from the Iowa Environmental Mesonet's archive of National Weather Service and Storm Prediction Center text; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.