Alert archive / Delaware / Severe Thunderstorm Warnings in 2010
Severe Thunderstorm Warning 24, NWS Philadelphia/Mount Holly
NWS Philadelphia/Mount Holly issued this severe thunderstorm warning at May 14, 2010, 7:08 PM EDT for Kent County, New Castle County, Delaware; Cecil County, Kent County, Maryland. It was in force for 67 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 14, 2010, 7:08 PM EDT (23:08 UTC)
- Expired
- May 14, 2010, 8:15 PM EDT
- In force
- 67 min
- Issued by
- NWS Philadelphia/Mount Holly
- Area
- Storm-based polygon
Counties Kent County, DE, New Castle County, DE, Cecil County, MD, Kent County, MD
The radar
The Dover AFB radar (KDOX), 73 km from the middle of the area, began a volume at 23:09 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 14, 3:43 PM EDT | Severe Thunderstorm Watch | SPC | 6 hr |
The nearest sounding before it
Phillips Aaf/Abe, MD (KAPG), launched 12:00Z, 11.1 hours before the alert went out and 36 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
- 557 m above ground
- 0-6 km bulk shear
- 50 kt
- 0-1 km storm-relative helicity
- 160 m²/s²
- 0-3 km storm-relative helicity
- 187 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- -0.1
The text
As transmitted, in the capitals the NWS used until 2016.
677
WUUS51 KPHI 142308 CCA
SVRPHI
DEC001-003-MDC015-029-150015-
/O.NEW.KPHI.SV.W.0024.100514T2308Z-100515T0015Z/
BULLETIN - EAS ACTIVATION REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE MOUNT HOLLY NJ
708 PM EDT FRI MAY 14 2010
THE NATIONAL WEATHER SERVICE IN MOUNT HOLLY NJ HAS ISSUED A
* SEVERE THUNDERSTORM WARNING FOR...
NORTHEASTERN KENT COUNTY IN CENTRAL DELAWARE...
THIS INCLUDES THE CITY OF DOVER...
CECIL COUNTY IN NORTHEAST MARYLAND...
THIS INCLUDES THE CITY OF ELKTON...
EXTREME NORTHEASTERN KENT COUNTY IN NORTHEAST MARYLAND...
SOUTHERN NEW CASTLE COUNTY IN NORTHERN DELAWARE...
THIS INCLUDES THE CITY OF MIDDLETOWN...
* UNTIL 815 PM EDT
* AT 703 PM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
SEVERE THUNDERSTORM CAPABLE OF PRODUCING QUARTER SIZE HAIL...AND
DAMAGING WINDS IN EXCESS OF 60 MPH. THIS STORM WAS LOCATED NEAR
PLEASANT HILL...OR 7 MILES NORTHWEST OF ELKTON...AND MOVING
SOUTHEAST AT 40 MPH.
* THE SEVERE THUNDERSTORM WILL BE NEAR...
ELKTON AROUND 715 PM EDT...
BRANTWOOD...GLASGOW AND CAYOTS AROUND 720 PM EDT...
MOUNT PLEASANT AND BOHEMIAS MILLS AROUND 725 PM EDT...
MIDDLETOWN AROUND 730 PM EDT...
6 MILES NORTHEAST OF SMYRNA AROUND 750 PM EDT...
WOODLAND BEACH AROUND 755 PM EDT...
PRECAUTIONARY/PREPAREDNESS ACTIONS...
A SEVERE THUNDERSTORM WATCH REMAINS IN EFFECT UNTIL 1000 PM EDT
FRIDAY EVENING FOR DELAWARE AND NORTHEASTERN MARYLAND AND NEW JERSEY
AND EASTERN PENNSYLVANIA.
&&
LAT...LON 3973 7588 3948 7558 3946 7558 3942 7553
3937 7550 3932 7543 3925 7539 3906 7543
3951 7599 3953 7599 3957 7606
TIME...MOT...LOC 2308Z 314DEG 33KT 3963 7588
$$
HAYES1 follow-up statement
332
WWUS51 KPHI 150010
SVSPHI
SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE MOUNT HOLLY NJ
810 PM EDT FRI MAY 14 2010
DEC001-003-MDC015-029-150021-
/O.EXP.KPHI.SV.W.0024.000000T0000Z-100515T0015Z/
KENT DE-CECIL MD-KENT MD-NEW CASTLE DE-
810 PM EDT FRI MAY 14 2010
...THE SEVERE THUNDERSTORM WARNING FOR SOUTHERN NEW CASTLE...EXTREME
NORTHEASTERN KENT...CECIL AND NORTHEASTERN KENT COUNTIES WILL EXPIRE
AT 815 PM EDT...
A SEVERE THUNDERSTORM WATCH REMAINS IN EFFECT UNTIL 1000 PM EDT
FRIDAY EVENING FOR DELAWARE AND NORTHEASTERN MARYLAND AND NEW JERSEY
AND EASTERN PENNSYLVANIA.
LAT...LON 3973 7588 3948 7558 3946 7558 3942 7553
3937 7550 3932 7543 3925 7539 3906 7543
3951 7599 3953 7599 3957 7606
TIME...MOT...LOC 0011Z 314DEG 33KT 3923 7534
$$
HAYESThe office that day
Everything else NWS Philadelphia/Mount Holly issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| May 14, 6:35 PM EDT | Severe Thunderstorm Warning | PHI | New Castle | 55 min |
| May 14, 7:00 PM EDT | Severe Thunderstorm Warning | PHI | New Castle | 60 min |
| May 14, 7:27 PM EDT | Severe Thunderstorm Warning | PHI | New Castle | 63 min |
Nearby
Severe Thunderstorm Warnings in Delaware, 2010Severe Thunderstorm Warnings in Maryland, 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; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.