Alert archive / Maryland / Severe Thunderstorm Warnings in 2011
Severe Thunderstorm Warning 138, NWS Philadelphia/Mount Holly
NWS Philadelphia/Mount Holly issued this severe thunderstorm warning at Jul 3, 2011, 7:18 PM EDT for Caroline County, Queen Anne's County, Talbot County, Maryland. It was in force for 57 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
- Jul 3, 2011, 7:18 PM EDT (23:18 UTC)
- Expired
- Jul 3, 2011, 8:15 PM EDT
- In force
- 57 min
- Issued by
- NWS Philadelphia/Mount Holly
- Area
- Storm-based polygon
Counties Caroline County, MD, Queen Anne's County, MD, Talbot County, MD
The radar
The Dover AFB radar (KDOX), 66 km from the middle of the area, began a volume at 23:20 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
Washington/Dulle, VA (KIAD), launched 12:00Z, 11.3 hours before the alert went out and 105 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
- 750 J/kg
- Mixed-layer CIN
- -178 J/kg
- Mixed-layer LCL
- 781 m above ground
- 0-6 km bulk shear
- 22 kt
- 0-1 km storm-relative helicity
- -31 m²/s²
- 0-3 km storm-relative helicity
- -32 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- -0.1
The text
As transmitted, in the capitals the NWS used until 2016.
813
WUUS51 KPHI 032318
SVRPHI
MDC011-035-041-040015-
/O.NEW.KPHI.SV.W.0138.110703T2318Z-110704T0015Z/
BULLETIN - EAS ACTIVATION REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE MOUNT HOLLY NJ
718 PM EDT SUN JUL 3 2011
THE NATIONAL WEATHER SERVICE IN MOUNT HOLLY NJ HAS ISSUED A
* SEVERE THUNDERSTORM WARNING FOR...
SOUTHERN CAROLINE COUNTY IN EASTERN MARYLAND...
TALBOT COUNTY IN EASTERN MARYLAND...
THIS INCLUDES THE CITY OF EASTON...
SOUTHWESTERN QUEEN ANNE'S COUNTY IN NORTHEAST MARYLAND...
* UNTIL 815 PM EDT
* AT 718 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 11
MILES NORTHWEST OF TILGHMAN ISLAND...AND MOVING SOUTHEAST AT 25
MPH.
* THE SEVERE THUNDERSTORM WILL BE NEAR...
TALBOT AROUND 740 PM EDT...
TILGHMAN ISLAND AROUND 745 PM EDT...
ST. MICHAELS AROUND 750 PM EDT...
OXFORD AROUND 805 PM EDT...
TRAPPE AND HAMBLETON AROUND 815 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 3873 7625 3866 7635 3874 7635 3876 7640
3887 7626 3882 7620 3883 7620 3894 7624
3890 7624 3893 7628 3884 7638 3885 7639
3904 7631 3899 7624 3902 7618 3883 7573
3871 7583 3867 7595 3856 7604
TIME...MOT...LOC 2318Z 308DEG 20KT 3885 7647
$$
IOVINO1 follow-up statement
265
WWUS51 KPHI 032353
SVSPHI
SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE MOUNT HOLLY NJ
753 PM EDT SUN JUL 3 2011
MDC011-035-041-040015-
/O.CON.KPHI.SV.W.0138.000000T0000Z-110704T0015Z/
CAROLINE MD-QUEEN ANNE'S MD-TALBOT MD-
753 PM EDT SUN JUL 3 2011
...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 815 PM EDT
FOR TALBOT...SOUTHWESTERN QUEEN ANNE'S AND SOUTHERN CAROLINE
COUNTIES...
AT 752 PM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR CONTINUED TO
INDICATE A SEVERE THUNDERSTORM CAPABLE OF PRODUCING QUARTER SIZE
HAIL...AND DAMAGING WINDS IN EXCESS OF 60 MPH. THIS STORM WAS
LOCATED NEAR ST. MICHAELS...MOVING SOUTHEAST AT 35 MPH.
THE SEVERE THUNDERSTORM WILL BE NEAR...
TRAPPE...HAMBLETON AND TANYARD BY 805 PM EDT...
WINDYHILL BY 810 PM EDT...
CHOPTANK AND PRESTON BY 815 PM EDT...
LAT...LON 3873 7625 3866 7635 3874 7635 3876 7640
3887 7626 3882 7620 3883 7620 3894 7624
3890 7624 3893 7628 3884 7638 3885 7639
3904 7631 3899 7624 3902 7618 3883 7573
3871 7583 3867 7595 3856 7604
TIME...MOT...LOC 2353Z 307DEG 29KT 3871 7618
$$
IOVINOThe office that day
Everything else NWS Philadelphia/Mount Holly issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jul 3, 6:45 PM EDT | Special Weather Statement | PHI | Talbot | 60 min |
| Jul 3, 7:51 PM EDT | Special Weather Statement | PHI | Cecil | 54 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.