Alert archive / Maryland / Severe Thunderstorm Warnings in 2011
Severe Thunderstorm Warning 105, NWS Philadelphia/Mount Holly
NWS Philadelphia/Mount Holly issued this severe thunderstorm warning at Jun 10, 2011, 12:16 AM EDT for 4 counties in Maryland; Kent County, Delaware. It was in force for 59 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
- Jun 10, 2011, 12:16 AM EDT (04:16 UTC)
- Expired
- Jun 10, 2011, 1:15 AM EDT
- In force
- 59 min
- Issued by
- NWS Philadelphia/Mount Holly
- Area
- Storm-based polygon
Counties Kent County, DE, Caroline County, MD, Kent County, MD, Queen Anne's County, MD, Talbot County, MD
The radar
The Dover AFB radar (KDOX), 37 km from the middle of the area, began a volume at 04:18 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
Wallops Is Stn, VA (KWAL), launched 00:00Z, 4.3 hours before the alert went out and 136 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
- 1702 J/kg
- Mixed-layer CIN
- -139 J/kg
- Mixed-layer LCL
- 1829 m above ground
- 0-6 km bulk shear
- 15 kt
- 0-1 km storm-relative helicity
- 26 m²/s²
- 0-3 km storm-relative helicity
- -9 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted, in the capitals the NWS used until 2016.
179
WUUS51 KPHI 100416
SVRPHI
DEC001-MDC011-029-035-041-100515-
/O.NEW.KPHI.SV.W.0105.110610T0416Z-110610T0515Z/
BULLETIN - EAS ACTIVATION REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE MOUNT HOLLY NJ
1216 AM EDT FRI JUN 10 2011
THE NATIONAL WEATHER SERVICE IN MOUNT HOLLY NJ HAS ISSUED A
* SEVERE THUNDERSTORM WARNING FOR...
KENT COUNTY IN CENTRAL DELAWARE...
THIS INCLUDES THE CITY OF DOVER...
NORTHERN CAROLINE COUNTY IN EASTERN MARYLAND...
EXTREME NORTHEASTERN TALBOT COUNTY IN EASTERN MARYLAND...
EXTREME EAST CENTRAL KENT COUNTY IN NORTHEAST MARYLAND...
EASTERN QUEEN ANNE'S COUNTY IN NORTHEAST MARYLAND...
* UNTIL 115 AM EDT
* AT 1211 AM 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
GOLDSBORO...OR 14 MILES EAST OF CENTERVILLE...AND MOVING EAST AT 20
MPH.
* THE SEVERE THUNDERSTORM WILL BE NEAR...
SANDTOWN AND HARTLY AROUND 1225 AM EDT...
HAZLETTVILLE AROUND 1235 AM EDT...
WOODSIDE AND VIOLA AROUND 1245 AM EDT...
CAMDEN AROUND 1250 AM EDT...
RISING SUN AND DOVER AROUND 1255 AM EDT...
RISING SUN AND DOVER AROUND 100 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 3924 7592 3934 7545 3932 7543 3924 7538
3920 7538 3916 7540 3907 7539 3903 7533
3898 7530 3879 7597
TIME...MOT...LOC 0416Z 265DEG 17KT 3908 7576
$$
IOVINO1 follow-up statement
291
WWUS51 KPHI 100437
SVSPHI
SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE MOUNT HOLLY NJ
1237 AM EDT FRI JUN 10 2011
MDC029-100447-
/O.CAN.KPHI.SV.W.0105.000000T0000Z-110610T0515Z/
KENT MD-
1237 AM EDT FRI JUN 10 2011
...THE SEVERE THUNDERSTORM WARNING FOR EXTREME EAST CENTRAL KENT
COUNTY IS CANCELLED...
LAT...LON 3919 7592 3934 7545 3932 7543 3924 7538
3920 7538 3916 7540 3907 7539 3903 7533
3898 7530 3879 7597
TIME...MOT...LOC 0437Z 265DEG 17KT 3909 7563
$$
DEC001-MDC011-035-041-100515-
/O.CON.KPHI.SV.W.0105.000000T0000Z-110610T0515Z/
KENT DE-CAROLINE MD-QUEEN ANNE'S MD-TALBOT MD-
1237 AM EDT FRI JUN 10 2011
...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 115 AM EDT
FOR EXTREME NORTHEASTERN TALBOT...EASTERN QUEEN ANNE'S...NORTHERN
CAROLINE AND KENT COUNTIES...
AT 1234 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 HAZLETTVILLE...OR 9 MILES SOUTHWEST OF DOVER...MOVING
EAST AT 20 MPH.
THE SEVERE THUNDERSTORM WILL BE NEAR...
WOODSIDE AND VIOLA BY 1245 AM EDT...
CAMDEN...WOODSIDE...WYOMING AND WOODSIDE EAST BY 1250 AM EDT...
HIGHLAND ACRES...RODNEY VILLAGE...KENT ACRES AND DOVER BY 1255 AM
EDT...
LAT...LON 3919 7592 3934 7545 3932 7543 3924 7538
3920 7538 3916 7540 3907 7539 3903 7533
3898 7530 3879 7597
TIME...MOT...LOC 0437Z 265DEG 17KT 3909 7563
$$
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 9, 11:46 PM EDT | Severe Thunderstorm Warning | PHI | Kent, Queen Anne's, Talbot | 59 min |
| Jun 10, 1:01 AM EDT | Special Weather Statement | PHI | Caroline, Queen Anne's, Talbot | 119 min |
| Jun 9, 8:10 PM EDT | Severe Thunderstorm Warning | PHI | New Castle | 65 min |
| Jun 9, 9:41 PM EDT | Special Weather Statement | PHI | Kent | 64 min |
| Jun 9, 9:59 PM EDT | Special Weather Statement | PHI | Kent | 31 min |
| Jun 10, 5:27 PM EDT | Special Weather Statement | PHI | Sussex | 63 min |
Nearby
Severe Thunderstorm Warnings in Maryland, 2011Severe Thunderstorm Warnings in Delaware, 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.