Alert archive / Maryland / Severe Thunderstorm Warnings in 2011
Severe Thunderstorm Warning 63, NWS Philadelphia/Mount Holly
NWS Philadelphia/Mount Holly issued this severe thunderstorm warning at May 19, 2011, 10:14 PM EDT for Caroline County, Talbot County, Maryland. It was in force for 61 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 19, 2011, 10:14 PM EDT (02:14 UTC)
- Expired
- May 19, 2011, 11:15 PM EDT
- In force
- 61 min
- Issued by
- NWS Philadelphia/Mount Holly
- Area
- Storm-based polygon
Counties Caroline County, MD, Talbot County, MD
The radar
The Dover AFB radar (KDOX), 48 km from the middle of the area, began a volume at 02:17 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 nearest sounding before it
Wallops Is Stn, VA (KWAL), launched 00:00Z, 2.2 hours before the alert went out and 106 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
- 302 J/kg
- Mixed-layer CIN
- -15 J/kg
- Mixed-layer LCL
- 1322 m above ground
- 0-6 km bulk shear
- 25 kt
- 0-1 km storm-relative helicity
- 16 m²/s²
- 0-3 km storm-relative helicity
- 14 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.1
The text
As transmitted, in the capitals the NWS used until 2016.
183
WUUS51 KPHI 200214
SVRPHI
MDC011-041-200315-
/O.NEW.KPHI.SV.W.0063.110520T0214Z-110520T0315Z/
BULLETIN - EAS ACTIVATION REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE MOUNT HOLLY NJ
1014 PM EDT THU MAY 19 2011
THE NATIONAL WEATHER SERVICE IN MOUNT HOLLY NJ HAS ISSUED A
* SEVERE THUNDERSTORM WARNING FOR...
SOUTHERN CAROLINE COUNTY IN EASTERN MARYLAND...
CENTRAL TALBOT COUNTY IN EASTERN MARYLAND...
THIS INCLUDES THE CITY OF EASTON...
* UNTIL 1115 PM EDT
* AT 1009 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
COPPERVILLE...OR NEAR EASTON...AND MOVING EAST AT 20 MPH.
* THE SEVERE THUNDERSTORM WILL BE NEAR...
EASTON AROUND 1025 PM EDT...
MATTHEWS AND TANYARD AROUND 1045 PM EDT...
GRIFFIN AROUND 1050 PM EDT...
PRESTON AROUND 1055 PM EDT...
HARMONY AROUND 1100 PM EDT...
AGNER AND SMITHVILLE AROUND 1115 PM EDT...
PRECAUTIONARY/PREPAREDNESS ACTIONS...
THIS IS A DANGEROUS STORM. IF YOU ARE IN ITS PATH...PREPARE
IMMEDIATELY FOR DAMAGING WINDS...DESTRUCTIVE HAIL...AND DEADLY CLOUD
TO GROUND LIGHTNING. PEOPLE OUTSIDE SHOULD MOVE TO A SHELTER...
PREFERABLY INSIDE A STRONG BUILDING BUT AWAY FROM WINDOWS.
&&
LAT...LON 3865 7572 3867 7576 3867 7580 3869 7583
3869 7590 3866 7596 3873 7624 3879 7623
3883 7620 3885 7621 3886 7615 3888 7615
3887 7611 3891 7611 3888 7573
TIME...MOT...LOC 0214Z 279DEG 16KT 3881 7613
$$
HAYES2 follow-up statements
389
WWUS51 KPHI 200234
SVSPHI
SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE MOUNT HOLLY NJ
1034 PM EDT THU MAY 19 2011
MDC011-041-200315-
/O.CON.KPHI.SV.W.0063.000000T0000Z-110520T0315Z/
CAROLINE MD-TALBOT MD-
1034 PM EDT THU MAY 19 2011
...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 1115 PM EDT
FOR CENTRAL TALBOT AND SOUTHERN CAROLINE COUNTIES...
AT 1030 PM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR CONTINUED TO
INDICATE A SEVERE THUNDERSTORM CAPABLE OF PRODUCING QUARTER SIZE
HAIL...AND DAMAGING WINDS IN EXCESS OF 60 MPH. THIS STORM WAS
LOCATED NEAR EASTON...MOVING EAST AT 20 MPH.
THE SEVERE THUNDERSTORM WILL BE NEAR...
TANYARD...MATTHEWS AND 7 MILES SOUTH OF GRIFFIN BY 1045 PM EDT...
6 MILES NORTH OF CHOPTANK AND 6 MILES NORTH OF WINDYHILL BY 1050 PM
EDT...
HARMONY AND PRESTON BY 1055 PM EDT...
AGNER BY 1110 PM EDT...
FEDERALSBURG AND SMITHVILLE BY 1115 PM EDT...
LAT...LON 3865 7572 3867 7576 3867 7580 3869 7583
3869 7590 3866 7596 3873 7624 3879 7623
3883 7620 3885 7621 3886 7615 3888 7615
3887 7611 3891 7611 3888 7573
TIME...MOT...LOC 0235Z 286DEG 18KT 3879 7602
$$
HAYES814
WWUS51 KPHI 200312
SVSPHI
SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE MOUNT HOLLY NJ
1112 PM EDT THU MAY 19 2011
MDC011-041-200323-
/O.EXP.KPHI.SV.W.0063.000000T0000Z-110520T0315Z/
CAROLINE MD-TALBOT MD-
1112 PM EDT THU MAY 19 2011
...THE SEVERE THUNDERSTORM WARNING FOR CENTRAL TALBOT AND SOUTHERN
CAROLINE COUNTIES WILL EXPIRE AT 1115 PM EDT...
LAT...LON 3865 7572 3867 7576 3867 7580 3869 7583
3869 7590 3866 7596 3873 7624 3879 7623
3883 7620 3885 7621 3886 7615 3888 7615
3887 7611 3891 7611 3888 7573
TIME...MOT...LOC 0313Z 286DEG 18KT 3874 7579
$$
HAYESThe office that day
Everything else NWS Philadelphia/Mount Holly issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| May 19, 11:11 PM EDT | Special Weather Statement | PHI | Caroline | 64 min |
| May 19, 11:27 PM EDT | Special Weather Statement | PHI | Talbot | 63 min |
Nearby
Severe Thunderstorm Warnings in Maryland, 2011Every severe thunderstorm warning in 2011
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.