Alert archive / Maryland / Severe Thunderstorm Warnings in 2011
Severe Thunderstorm Warning 225, NWS Philadelphia/Mount Holly
NWS Philadelphia/Mount Holly issued this severe thunderstorm warning at Aug 1, 2011, 5:12 PM EDT for Cecil County, Kent County, Queen Anne's County, Maryland. It was in force for 78 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
- Aug 1, 2011, 5:12 PM EDT (21:12 UTC)
- Expired
- Aug 1, 2011, 6:30 PM EDT
- In force
- 78 min
- Issued by
- NWS Philadelphia/Mount Holly
- Area
- Storm-based polygon
Counties Cecil County, MD, Kent County, MD, Queen Anne's County, MD
What was reported inside it
| Time | Report | Where | Remark |
|---|---|---|---|
| Aug 1, 5:40 PM EDT | TSTM WND DMG | Chestertown, MD | TREES REPORTED DOWN IN CHESTERTOWN AND FAIRLEA. |
| Aug 1, 5:40 PM EDT | HAIL 1 | Chestertown, MD | QUARTER SIZE HAIL REPORTED IN CHESTERTOWN AND LYNCH. |
Local storm reports filed while the alert was in force, from inside its polygon or its counties.
The nearest sounding before it
Phillips Aaf/Abe, MD (KAPG), launched 12:00Z, 9.2 hours before the alert went out and 40 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
- 307 J/kg
- Mixed-layer CIN
- -150 J/kg
- Mixed-layer LCL
- 1512 m above ground
- 0-6 km bulk shear
- 23 kt
- 0-1 km storm-relative helicity
- -192 m²/s²
- 0-3 km storm-relative helicity
- -166 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- -1.5
The text
As transmitted, in the capitals the NWS used until 2016.
327
WUUS51 KPHI 012112
SVRPHI
MDC015-029-035-012230-
/O.NEW.KPHI.SV.W.0225.110801T2112Z-110801T2230Z/
BULLETIN - EAS ACTIVATION REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE MOUNT HOLLY NJ
512 PM EDT MON AUG 1 2011
THE NATIONAL WEATHER SERVICE IN MOUNT HOLLY NJ HAS ISSUED A
* SEVERE THUNDERSTORM WARNING FOR...
SOUTHEASTERN CECIL COUNTY IN NORTHEAST MARYLAND...
KENT COUNTY IN NORTHEAST MARYLAND...
QUEEN ANNE'S COUNTY IN NORTHEAST MARYLAND...
THIS INCLUDES THE CITY OF CENTERVILLE...
* UNTIL 630 PM EDT
* AT 509 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
NEWTOWN...OR 22 MILES NORTH OF CENTERVILLE...AND MOVING SOUTH AT 20
MPH.
* THE SEVERE THUNDERSTORM WILL BE NEAR...
NEWTOWN AROUND 520 PM EDT...
CHESTERTOWN AROUND 540 PM EDT...
LANGFORD AROUND 545 PM EDT...
OLD TOWN AROUND 555 PM EDT...
CHURCH HILL AROUND 600 PM EDT...
STARKEY CORNER AROUND 605 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.
PLEASE REPORT HAIL OR STRONG WINDS TO THE NATIONAL WEATHER SERVICE BY
CALLING TOLL FREE...1-877-633-6772...WHEN YOU CAN DO SO SAFELY.
&&
LAT...LON 3903 7633 3905 7629 3899 7624 3900 7618
3903 7625 3910 7624 3916 7628 3934 7618
3938 7611 3938 7606 3944 7600 3949 7601
3940 7577 3915 7576 3892 7621 3894 7624
3890 7625 3892 7627 3893 7628 3884 7637
TIME...MOT...LOC 2112Z 344DEG 16KT 3933 7615
$$
TFG1 follow-up statement
591
WWUS51 KPHI 012143
SVSPHI
SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE MOUNT HOLLY NJ
543 PM EDT MON AUG 1 2011
MDC015-012153-
/O.CAN.KPHI.SV.W.0225.000000T0000Z-110801T2230Z/
CECIL MD-
543 PM EDT MON AUG 1 2011
...THE SEVERE THUNDERSTORM WARNING FOR SOUTHEASTERN CECIL COUNTY IS
CANCELLED...
THE SEVERE THUNDERSTORM IS IN KENT COUNTY.
PLEASE REPORT HAIL OR STRONG WINDS TO THE NATIONAL WEATHER SERVICE BY
CALLING TOLL FREE...1-877-633-6772...WHEN YOU CAN DO SO SAFELY.
LAT...LON 3932 7619 3938 7611 3934 7598 3935 7590
3930 7584 3916 7576 3892 7621 3895 7624
3899 7624 3898 7621 3900 7618 3903 7625
3910 7624 3916 7628
TIME...MOT...LOC 2143Z 326DEG 13KT 3924 7607
$$
MDC029-035-012230-
/O.CON.KPHI.SV.W.0225.000000T0000Z-110801T2230Z/
KENT MD-QUEEN ANNE'S MD-
543 PM EDT MON AUG 1 2011
...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 630 PM EDT
FOR QUEEN ANNE'S AND KENT COUNTIES...
AT 539 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 CHESTERTOWN...OR 15 MILES NORTH OF CENTERVILLE...MOVING
SOUTHEAST AT 15 MPH.
THE SEVERE THUNDERSTORM WILL BE NEAR...
CHESTERTOWN AND MORGNEC BY 550 PM EDT...
KINGSTOWN BY 555 PM EDT...
OLD TOWN BY 600 PM EDT...
CHURCH HILL AND STARKEY CORNER BY 615 PM EDT...
CARVILLE AND BARCLAY BY 630 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.
PLEASE REPORT HAIL OR STRONG WINDS TO THE NATIONAL WEATHER SERVICE BY
CALLING TOLL FREE...1-877-633-6772...WHEN YOU CAN DO SO SAFELY.
&&
LAT...LON 3932 7619 3938 7611 3934 7598 3935 7590
3930 7584 3916 7576 3892 7621 3895 7624
3899 7624 3898 7621 3900 7618 3903 7625
3910 7624 3916 7628
TIME...MOT...LOC 2143Z 326DEG 13KT 3924 7607
$$
TFGThe office that day
Everything else NWS Philadelphia/Mount Holly issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Aug 1, 4:07 PM EDT | Special Weather Statement | PHI | Cecil | 53 min |
| Aug 1, 4:46 PM EDT | Severe Thunderstorm Warning | PHI | Cecil | 48 min |
| Aug 1, 6:12 PM EDT | Areal Flood Advisory | PHI | Kent, Queen Anne's | 2 hr |
| Aug 1, 6:41 PM EDT | Severe Thunderstorm Warning | PHI | Caroline, Queen Anne's, Talbot | 18 min |
| Aug 1, 7:31 PM EDT | Special Weather Statement | PHI | Caroline, Cecil, Kent, Queen Anne's | 119 min |
| Aug 1, 7:46 PM EDT | Severe Thunderstorm Warning | PHI | Caroline, Kent, Queen Anne's | 38 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.