Alert archive / Maryland / Severe Thunderstorm Warnings in 2012
Severe Thunderstorm Warning 87, NWS Philadelphia/Mount Holly
NWS Philadelphia/Mount Holly issued this severe thunderstorm warning at Jul 8, 2012, 9:22 PM EDT for Caroline County, Queen Anne's County, Talbot County, Maryland. It was in force for 53 min. 1 report 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
- Jul 8, 2012, 9:22 PM EDT (01:22 UTC)
- Expired
- Jul 8, 2012, 10:15 PM EDT
- In force
- 53 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), 67 km from the middle of the area, began a volume at 01:23 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 |
|---|---|---|---|
| Jul 8, 10:25 PM EDT | TSTM WND DMG | 2 W Henderson, MD | A COUPLE OF TREES DOWN |
Local storm reports filed while the alert was in force, from inside its polygon or its counties.
The watch it was issued in
The SPC watch in force over the same counties when this warning went out.
| Issued | Product | Office | Lasted |
|---|---|---|---|
| Jul 8, 1:44 PM EDT | Severe Thunderstorm Watch | SPC | 8 hr |
The nearest sounding before it
Washington/Dulle, VA (KIAD), launched 00:00Z, 1.4 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
- 0 J/kg
- Mixed-layer CIN
- No buoyant parcel
- Mixed-layer LCL
- 0 m above ground
- 0-6 km bulk shear
- 38 kt
- 0-1 km storm-relative helicity
- 1 m²/s²
- 0-3 km storm-relative helicity
- 27 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- -0.3
The text
As transmitted, in the capitals the NWS used until 2016.
734
WUUS51 KPHI 090122
SVRPHI
MDC011-035-041-090215-
/O.NEW.KPHI.SV.W.0087.120709T0122Z-120709T0215Z/
BULLETIN - EAS ACTIVATION REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE MOUNT HOLLY NJ
922 PM EDT SUN JUL 8 2012
THE NATIONAL WEATHER SERVICE IN MOUNT HOLLY NJ HAS ISSUED A
* SEVERE THUNDERSTORM WARNING FOR...
NORTHWESTERN CAROLINE COUNTY IN EASTERN MARYLAND...
NORTHEASTERN TALBOT COUNTY IN EASTERN MARYLAND...
SOUTHERN QUEEN ANNE'S COUNTY IN NORTHEAST MARYLAND...
THIS INCLUDES THE CITY OF CENTERVILLE...
* UNTIL 1015 PM EDT
* AT 919 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
STEVENSVILLE...OR 12 MILES WEST OF CENTERVILLE...AND MOVING EAST AT
20 MPH.
* THE SEVERE THUNDERSTORM WILL BE NEAR...
GRASONVILLE AROUND 935 PM EDT...
CENTREVILLE AROUND 1000 PM EDT...
CENTERVILLE AND WYE MILLS AROUND 1005 PM EDT...
CARVILLE AND 7 MILES NORTH OF SKIPTON AROUND 1010 PM EDT...
STARR...HOPE...JUMPTOWN AND 6 MILES NORTHWEST OF QUEEN ANNE AROUND
1015 PM EDT...
PRECAUTIONARY/PREPAREDNESS ACTIONS...
THIS IS A DANGEROUS STORM. IF YOU ARE IN ITS PATH...PREPARE
IMMEDIATELY FOR DAMAGING WINDS...LARGE 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 3904 7632 3904 7629 3899 7627 3898 7620
3900 7618 3906 7620 3912 7611 3909 7577
3882 7585 3892 7622 3894 7624 3892 7625
3895 7637
TIME...MOT...LOC 0122Z 282DEG 14KT 3903 7627
$$
HAYES1 follow-up statement
959
WWUS51 KPHI 090137
SVSPHI
SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE MOUNT HOLLY NJ
937 PM EDT SUN JUL 8 2012
MDC011-035-041-090215-
/O.CON.KPHI.SV.W.0087.000000T0000Z-120709T0215Z/
TALBOT MD-CAROLINE MD-QUEEN ANNE'S MD-
937 PM EDT SUN JUL 8 2012
...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 1015 PM EDT
FOR SOUTHERN QUEEN ANNE'S...NORTHWESTERN CAROLINE AND NORTHEASTERN
TALBOT COUNTIES...
AT 936 PM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR CONTINUED TO
INDICATE A SEVERE THUNDERSTORM CAPABLE OF PRODUCING QUARTER SIZE
HAIL...AND DAMAGING WINDS IN EXCESS OF 60 MPH. THIS STORM WAS
LOCATED NEAR QUEENSTOWN...OR 8 MILES WEST OF CENTERVILLE...MOVING
EAST AT 15 MPH.
THE SEVERE THUNDERSTORM WILL BE NEAR...
QUEENSTOWN BY 945 PM EDT...
CENTREVILLE BY 1000 PM EDT...
CENTERVILLE AND WYE MILLS BY 1005 PM EDT...
7 MILES NORTH OF SKIPTON BY 1010 PM EDT...
STARR...CARVILLE...HOPE AND JUMPTOWN BY 1015 PM EDT...
PRECAUTIONARY/PREPAREDNESS ACTIONS...
PLEASE REPORT HAIL OR STRONG WINDS TO THE NATIONAL WEATHER SERVICE BY
CALLING TOLL FREE...1-877-633-6772...WHEN YOU CAN DO SO SAFELY.
&&
LAT...LON 3904 7632 3904 7629 3899 7627 3898 7620
3900 7618 3906 7620 3912 7611 3909 7577
3882 7585 3892 7622 3894 7624 3892 7625
3895 7637
TIME...MOT...LOC 0138Z 282DEG 14KT 3902 7619
$$
HAYESThe office that day
Everything else NWS Philadelphia/Mount Holly issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jul 8, 9:09 PM EDT | Special Weather Statement | PHI | Caroline, Kent, Queen Anne's | 66 min |
| Jul 8, 10:13 PM EDT | Special Weather Statement | PHI | Caroline, Queen Anne's | 62 min |
| Jul 8, 10:15 PM EDT | Severe Thunderstorm Warning | PHI | Caroline, Queen Anne's | 25 min |
| Jul 9, 5:20 AM EDT | Special Weather Statement | PHI | Caroline, Cecil, Kent, Queen Anne's, Talbot | 3 hr |
Nearby
Severe Thunderstorm Warnings in Maryland, 2012Every severe thunderstorm warning in 2012
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.