Alert archive / Maryland / Severe Thunderstorm Warnings in 2010
Severe Thunderstorm Warning 28, NWS Philadelphia/Mount Holly
NWS Philadelphia/Mount Holly issued this severe thunderstorm warning at May 14, 2010, 8:04 PM EDT for Caroline County, Kent County, Queen Anne's County, Maryland; Kent County, Delaware. It was in force for 56 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, 8:04 PM EDT (00:04 UTC)
- Expired
- May 14, 2010, 9:00 PM EDT
- In force
- 56 min
- Issued by
- NWS Philadelphia/Mount Holly
- Area
- Storm-based polygon
Counties Kent County, DE, Caroline County, MD, Kent County, MD, Queen Anne's County, MD
The radar
The Dover AFB radar (KDOX), 66 km from the middle of the area, began a volume at 00:04 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
Washington/Dulle, VA (KIAD), launched 00:00Z, 0.1 hours before the alert went out and 110 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
- 2598 J/kg
- Mixed-layer CIN
- -49 J/kg
- Mixed-layer LCL
- 1130 m above ground
- 0-6 km bulk shear
- 45 kt
- 0-1 km storm-relative helicity
- 46 m²/s²
- 0-3 km storm-relative helicity
- 137 m²/s²
- Significant tornado parameter
- 1.0
- Supercell composite
- 7.2
The text
As transmitted, in the capitals the NWS used until 2016.
013
WUUS51 KPHI 150004
SVRPHI
DEC001-MDC011-029-035-150100-
/O.NEW.KPHI.SV.W.0028.100515T0004Z-100515T0100Z/
BULLETIN - EAS ACTIVATION REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE MOUNT HOLLY NJ
804 PM EDT FRI MAY 14 2010
THE NATIONAL WEATHER SERVICE IN MOUNT HOLLY NJ HAS ISSUED A
* SEVERE THUNDERSTORM WARNING FOR...
CENTRAL KENT COUNTY IN CENTRAL DELAWARE...
THIS INCLUDES THE CITY OF DOVER...
NORTHERN CAROLINE COUNTY IN EASTERN MARYLAND...
SOUTHWESTERN KENT COUNTY IN NORTHEAST MARYLAND...
NORTHERN QUEEN ANNE'S COUNTY IN NORTHEAST MARYLAND...
THIS INCLUDES THE CITY OF CENTERVILLE...
* UNTIL 900 PM EDT
* AT 759 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 7 MILES
WEST OF ROCK HALL...OR 16 MILES SOUTHEAST OF BALTIMORE...AND MOVING
EAST AT 45 MPH.
* THE SEVERE THUNDERSTORM WILL BE NEAR...
ROCK HALL AROUND 810 PM EDT...
LANGFORD AROUND 815 PM EDT...
OLD TOWN AROUND 820 PM EDT...
STARKEY CORNER AROUND 825 PM EDT...
CHURCH HILL AND HOPE AROUND 830 PM EDT...
SUDLERSVILLE AROUND 835 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 3905 7631 3904 7625 3906 7623 3914 7626
3915 7628 3916 7628 3925 7622 3919 7543
3893 7550 3894 7582 3902 7624 3904 7627
3903 7629 3904 7632
TIME...MOT...LOC 0002Z 278DEG 37KT 3916 7632
$$
HAYES2 follow-up statements
744
WWUS51 KPHI 150022 RRA
SVSPHI
SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE MOUNT HOLLY NJ
822 PM EDT FRI MAY 14 2010
DEC001-MDC011-029-035-150100-
/O.CON.KPHI.SV.W.0028.000000T0000Z-100515T0100Z/
KENT DE-CAROLINE MD-KENT MD-QUEEN ANNE'S MD-
822 PM EDT FRI MAY 14 2010
...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 900 PM EDT
FOR NORTHERN QUEEN ANNE'S...SOUTHWESTERN KENT...NORTHERN CAROLINE AND
CENTRAL KENT COUNTIES...
AT 820 PM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR CONTINUED TO
INDICATE A SEVERE THUNDERSTORM CAPABLE OF PRODUCING QUARTER SIZE
HAIL...AND DAMAGING WINDS IN EXCESS OF 60 MPH. THIS STORM WAS
LOCATED NEAR OLD TOWN...OR 6 MILES NORTH OF CENTERVILLE...MOVING EAST
AT 45 MPH.
THE SEVERE THUNDERSTORM WILL BE NEAR...
HOPE BY 830 PM EDT...
BARCLAY AND SUDLERSVILLE BY 835 PM EDT...
MARYDEL...HENDERSON...TEMPLEVILLE AND GOLDSBORO BY 845 PM EDT...
SANDTOWN BY 850 PM EDT...
WOODSIDE AND HAZLETTVILLE BY 855 PM EDT...
PRECAUTIONARY/PREPAREDNESS ACTIONS...
A SEVERE THUNDERSTORM WATCH REMAINS IN EFFECT UNTIL 1000 PM EDT
FRIDAY EVENING FOR DELAWARE AND NORTHEASTERN MARYLAND AND NEW JERSEY
AND EASTERN PENNSYLVANIA.
&&
LAT...LON 3905 7631 3904 7625 3906 7623 3914 7626
3915 7628 3916 7628 3925 7622 3919 7543
3893 7550 3894 7582 3902 7624 3904 7627
3903 7629 3904 7632
TIME...MOT...LOC 0022Z 278DEG 37KT 3913 7606
$$
HAYES660
WWUS51 KPHI 150102
SVSPHI
SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE MOUNT HOLLY NJ
902 PM EDT FRI MAY 14 2010
DEC001-MDC011-029-035-150112-
/O.EXP.KPHI.SV.W.0028.000000T0000Z-100515T0100Z/
KENT DE-CAROLINE MD-KENT MD-QUEEN ANNE'S MD-
902 PM EDT FRI MAY 14 2010
...THE SEVERE THUNDERSTORM WARNING FOR NORTHERN QUEEN ANNE'S...
SOUTHWESTERN KENT...NORTHERN CAROLINE AND CENTRAL KENT COUNTIES HAS
EXPIRED...
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 3905 7631 3904 7625 3906 7623 3914 7626
3915 7628 3916 7628 3925 7622 3919 7543
3893 7550 3894 7582 3902 7624 3904 7627
3903 7629 3904 7632
TIME...MOT...LOC 0022Z 278DEG 37KT 3913 7606
$$
HAYESThe office that day
Everything else NWS Philadelphia/Mount Holly issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| May 14, 8:49 PM EDT | Severe Thunderstorm Warning | PHI | Caroline, Queen Anne's, Talbot | 56 min |
| May 14, 9:45 PM EDT | Severe Thunderstorm Warning | PHI | Caroline, Talbot | 60 min |
| May 14, 9:05 PM EDT | Special Weather Statement | PHI | New Castle | 55 min |
| May 14, 9:06 PM EDT | Special Weather Statement | PHI | New Castle | 54 min |
| May 14, 9:57 PM EDT | Severe Thunderstorm Warning | PHI | New Castle | 48 min |
Nearby
Severe Thunderstorm Warnings in Maryland, 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; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.