Alert archive / Maryland / Severe Thunderstorm Warnings in 2011
Severe Thunderstorm Warning 113, NWS Philadelphia/Mount Holly
NWS Philadelphia/Mount Holly issued this severe thunderstorm warning at Jun 17, 2011, 7:23 PM EDT for Caroline County, Queen Anne's County, Talbot County, Maryland. It was in force for 52 min. 2 reports came from inside the area while it was in force.
The area
The outline as issued, with what was reported inside it.
The facts
- Issued
- Jun 17, 2011, 7:23 PM EDT (23:23 UTC)
- Expired
- Jun 17, 2011, 8:15 PM EDT
- In force
- 52 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 23:26 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.
What was reported inside it
| Time | Report | Where | Remark |
|---|---|---|---|
| Jun 17, 7:29 PM EDT | TSTM WND DMG | Tilghman, MD | TREES AND WIRES DOWN..PROBABLY S PART OF TILGHMAN. MAY ISSUE MORE DETAIL LATER. |
| Jun 17, 7:39 PM EDT | TSTM WND DMG | Oxford, MD | TREES AND WIRES DOWN...EXTENT UNKNOWN. MAY UPDATE LATER. |
Local storm reports filed while the alert was in force, from inside its polygon or its counties.
The nearest sounding before it
Washington/Dulle, VA (KIAD), launched 12:00Z, 11.4 hours before the alert went out and 107 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
- 2 J/kg
- Mixed-layer CIN
- -171 J/kg
- Mixed-layer LCL
- 1339 m above ground
- 0-6 km bulk shear
- 36 kt
- 0-1 km storm-relative helicity
- 59 m²/s²
- 0-3 km storm-relative helicity
- 77 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted, in the capitals the NWS used until 2016.
877
WUUS51 KPHI 172323
SVRPHI
MDC011-035-041-180030-
/O.NEW.KPHI.SV.W.0113.110617T2323Z-110618T0030Z/
BULLETIN - EAS ACTIVATION REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE MOUNT HOLLY NJ
723 PM EDT FRI JUN 17 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 830 PM EDT
* AT 718 PM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
SEVERE THUNDERSTORM CAPABLE OF PRODUCING DESTRUCTIVE WINDS IN
EXCESS OF 70 MPH. THIS STORM WAS LOCATED 8 MILES SOUTHWEST OF
TILGHMAN ISLAND...OR 22 MILES WEST OF EASTON...AND MOVING EAST AT
40 MPH.
* THE SEVERE THUNDERSTORM WILL BE NEAR...
OXFORD AROUND 740 PM EDT...
6 MILES SOUTH OF HAMBLETON AROUND 745 PM EDT...
TRAPPE AROUND 750 PM EDT...
6 MILES SOUTH OF WINDYHILL AND 7 MILES SOUTH OF CHOPTANK AROUND 755
PM EDT...
9 MILES SOUTH OF PRESTON AROUND 800 PM EDT...
PRECAUTIONARY/PREPAREDNESS ACTIONS...
THIS IS A DANGEROUS STORM. IF YOU ARE IN ITS PATH...PREPARE
IMMEDIATELY FOR DAMAGING WINDS...HAIL...AND CLOUD TO GROUND
LIGHTNING. PEOPLE OUTSIDE SHOULD MOVE TO A SHELTER...PREFERABLY
INSIDE A STRONG BUILDING BUT AWAY FROM WINDOWS.
&&
LAT...LON 3867 7622 3873 7625 3867 7636 3874 7635
3877 7640 3879 7638 3875 7635 3884 7630
3886 7634 3884 7638 3890 7637 3890 7632
3884 7630 3887 7625 3882 7621 3891 7624
3893 7576 3866 7574 3869 7590 3856 7605
TIME...MOT...LOC 2323Z 286DEG 37KT 3868 7640
$$
JJM2 follow-up statements
405
WWUS51 KPHI 172352
SVSPHI
SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE MOUNT HOLLY NJ
752 PM EDT FRI JUN 17 2011
MDC035-180002-
/O.CAN.KPHI.SV.W.0113.000000T0000Z-110618T0030Z/
QUEEN ANNE'S MD-
752 PM EDT FRI JUN 17 2011
...THE SEVERE THUNDERSTORM WARNING FOR EXTREME SOUTH CENTRAL QUEEN
ANNE'S COUNTY IS CANCELLED...
LAT...LON 3862 7615 3874 7612 3870 7574 3866 7574
3869 7590 3856 7605
TIME...MOT...LOC 2352Z 279DEG 33KT 3863 7603
$$
MDC011-041-180030-
/O.CON.KPHI.SV.W.0113.000000T0000Z-110618T0030Z/
CAROLINE MD-TALBOT MD-
752 PM EDT FRI JUN 17 2011
...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 830 PM EDT
FOR SOUTHEASTERN TALBOT AND SOUTHERN CAROLINE COUNTIES...
AT 748 PM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR CONTINUED TO
INDICATE A SEVERE THUNDERSTORM CAPABLE OF PRODUCING DESTRUCTIVE WINDS
IN EXCESS OF 70 MPH AND LARGE HAIL. THIS STORM WAS LOCATED NEAR
TRAPPE...OR 9 MILES SOUTH OF EASTON...MOVING EAST AT 40 MPH.
THE SEVERE THUNDERSTORM WILL BE NEAR...
CHOPTANK AND 6 MILES SOUTH OF PRESTON BY 800 PM EDT...
6 MILES SOUTH OF FEDERALSBURG BY 810 PM EDT...
LAT...LON 3862 7615 3874 7612 3870 7574 3866 7574
3869 7590 3856 7605
TIME...MOT...LOC 2352Z 279DEG 33KT 3863 7603
$$
JJM203
WWUS51 KPHI 180015
SVSPHI
SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE MOUNT HOLLY NJ
815 PM EDT FRI JUN 17 2011
MDC011-041-180023-
/O.CAN.KPHI.SV.W.0113.000000T0000Z-110618T0030Z/
CAROLINE MD-TALBOT MD-
815 PM EDT FRI JUN 17 2011
...THE SEVERE THUNDERSTORM WARNING FOR SOUTHEASTERN TALBOT AND
SOUTHERN CAROLINE COUNTIES IS CANCELLED...
THUNDERSTORM ACTIVITY IS POSSIBLE IN EXTREME SOUTHERN CAROLINE
COUNTY UNTIL ABOUT 830 PM...BUT SEVERE WEATHER HAS MOVED SOUTHEAST
AND NO LONGER POSES A THREAT TO CAROLINE COUNTY.
LAT...LON 3862 7615 3874 7612 3870 7574 3866 7574
3869 7590 3856 7605
TIME...MOT...LOC 0013Z 279DEG 33KT 3860 7579
$$
JJMThe office that day
Everything else NWS Philadelphia/Mount Holly issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jun 17, 3:10 AM EDT | Coastal Flood Advisory | PHI | Caroline, Cecil, Kent, Queen Anne's, Talbot | 9 hr |
| Jun 17, 2:34 PM EDT | Special Weather Statement | PHI | Cecil | 56 min |
| Jun 17, 7:02 PM EDT | Special Weather Statement | PHI | Caroline, Talbot | 58 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; local storm reports from the same archive; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.