Alert archive / Maryland / Severe Thunderstorm Warnings in 2011
Severe Thunderstorm Warning 104, NWS Philadelphia/Mount Holly
NWS Philadelphia/Mount Holly issued this severe thunderstorm warning at Jun 9, 2011, 11:46 PM EDT for Kent County, Queen Anne's County, Talbot County, Maryland. It was in force for 59 min. 3 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 9, 2011, 11:46 PM EDT (03:46 UTC)
- Expired
- Jun 10, 2011, 12:45 AM EDT
- In force
- 59 min
- Issued by
- NWS Philadelphia/Mount Holly
- Area
- Storm-based polygon
Counties Kent County, MD, Queen Anne's County, MD, Talbot County, MD
The radar
The Dover AFB radar (KDOX), 71 km from the middle of the area, began a volume at 03:48 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 9, 11:55 PM EDT | TSTM WND DMG | Matapeake, MD | NUMEROUS TREES AND POWER LINES KNOCKED DOWN... SOME POLES SNAPPED. HOME UNDER RECONSTRUCTION DAMAGED. |
| Jun 9, 11:55 PM EDT | TSTM WND DMG | Stevensville, MD | TREES DOWN. |
| Jun 10, 12:05 AM EDT | TSTM WND DMG | 15 S Chestertown, MD | TREES DOWN |
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 00:00Z, 3.8 hours before the alert went out and 100 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
- 1601 J/kg
- Mixed-layer CIN
- -110 J/kg
- Mixed-layer LCL
- 1529 m above ground
- 0-6 km bulk shear
- 10 kt
- 0-1 km storm-relative helicity
- 18 m²/s²
- 0-3 km storm-relative helicity
- 65 m²/s²
- Significant tornado parameter
- -0.1
- Supercell composite
- -1.2
The text
As transmitted, in the capitals the NWS used until 2016.
207
WUUS51 KPHI 100346
SVRPHI
MDC029-035-041-100445-
/O.NEW.KPHI.SV.W.0104.110610T0346Z-110610T0445Z/
BULLETIN - EAS ACTIVATION REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE MOUNT HOLLY NJ
1146 PM EDT THU JUN 9 2011
THE NATIONAL WEATHER SERVICE IN MOUNT HOLLY NJ HAS ISSUED A
* SEVERE THUNDERSTORM WARNING FOR...
NORTHERN TALBOT COUNTY IN EASTERN MARYLAND...
SOUTHWESTERN KENT COUNTY IN NORTHEAST MARYLAND...
QUEEN ANNE'S COUNTY IN NORTHEAST MARYLAND...
THIS INCLUDES THE CITY OF CENTERVILLE...
* UNTIL 1245 AM EDT
* AT 1144 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
10 MPH.
* THE SEVERE THUNDERSTORM WILL BE NEAR...
OVERTON AND GRASONVILLE AROUND MIDNIGHT EDT...
WYE MILLS AROUND 1235 AM EDT...
CENTERVILLE AND CENTREVILLE AROUND 1240 AM EDT...
STARR...CARVILLE AND HOPE AROUND 1245 AM 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 3894 7638 3905 7631 3900 7627 3898 7621
3900 7618 3903 7625 3919 7627 3924 7592
3879 7597 3878 7633 3887 7626 3882 7621
3883 7620 3894 7624 3890 7624 3893 7628
3884 7638 3885 7638
TIME...MOT...LOC 0346Z 266DEG 10KT 3900 7626
$$
IOVINO1 follow-up statement
783
WWUS51 KPHI 100411
SVSPHI
SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE MOUNT HOLLY NJ
1211 AM EDT FRI JUN 10 2011
MDC029-035-041-100445-
/O.CON.KPHI.SV.W.0104.000000T0000Z-110610T0445Z/
KENT MD-QUEEN ANNE'S MD-TALBOT MD-
1211 AM EDT FRI JUN 10 2011
...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 1245 AM EDT
FOR NORTHERN TALBOT...QUEEN ANNE'S AND SOUTHWESTERN KENT COUNTIES...
AT 1209 AM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR CONTINUED TO
INDICATE A SEVERE THUNDERSTORM CAPABLE OF PRODUCING QUARTER SIZE
HAIL...AND DAMAGING WINDS IN EXCESS OF 60 MPH. THIS STORM WAS
LOCATED NEAR GRASONVILLE...OR 12 MILES SOUTHWEST OF CENTERVILLE...
MOVING EAST AT 20 MPH.
THE SEVERE THUNDERSTORM WILL BE NEAR...
QUEENSTOWN BY 1225 AM EDT...
WYE MILLS AND SKIPTON BY 1235 AM EDT...
7 MILES SOUTH OF CENTERVILLE AND 7 MILES SOUTH OF CENTREVILLE BY
1240 AM EDT...
STARR...CORDOVA...7 MILES SOUTH OF HOPE AND 7 MILES SOUTH OF
CARVILLE BY 1245 AM EDT...
LAT...LON 3894 7638 3905 7631 3900 7627 3898 7621
3900 7618 3903 7625 3919 7627 3924 7592
3879 7597 3878 7633 3887 7626 3882 7621
3883 7620 3894 7624 3890 7624 3893 7628
3884 7638 3885 7638
TIME...MOT...LOC 0412Z 264DEG 17KT 3893 7621
$$
IOVINOThe office that day
Everything else NWS Philadelphia/Mount Holly issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jun 9, 8:45 PM EDT | Severe Thunderstorm Warning | PHI | Cecil, Kent, Queen Anne's | 60 min |
| Jun 9, 11:29 PM EDT | Special Weather Statement | PHI | Queen Anne's | 61 min |
| Jun 10, 12:16 AM EDT | Severe Thunderstorm Warning | PHI | Caroline, Kent, Queen Anne's, Talbot | 59 min |
| Jun 10, 1:01 AM EDT | Special Weather Statement | PHI | Caroline, Queen Anne's, Talbot | 119 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.