Alert archive / Maryland / Severe Thunderstorm Warnings in 2015
Severe Thunderstorm Warning 52, NWS Philadelphia/Mount Holly
NWS Philadelphia/Mount Holly issued this severe thunderstorm warning at Jun 20, 2015, 9:57 PM EDT for Caroline County, Kent County, Queen Anne's County, Maryland. It was in force for 63 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 20, 2015, 9:57 PM EDT (01:57 UTC)
- Expired
- Jun 20, 2015, 11:00 PM EDT
- In force
- 63 min
- Issued by
- NWS Philadelphia/Mount Holly
- Area
- Storm-based polygon
Counties Caroline County, MD, Kent County, MD, Queen Anne's County, MD
The radar
The Dover AFB radar (KDOX), 70 km from the middle of the area, began a volume at 01:57 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 20, 10:18 PM EDT | TSTM WND GST 49 | Stevensville, MD | |
| Jun 20, 10:38 PM EDT | TSTM WND DMG | Chestertown, MD | TREE 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 |
|---|---|---|---|
| Jun 20, 8:56 PM EDT | Severe Thunderstorm Watch | SPC | 4 hr |
The nearest sounding before it
Wallops Is Stn, VA (KWAL), launched 00:00Z, 2.0 hours before the alert went out and 142 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
- 261 J/kg
- Mixed-layer CIN
- -134 J/kg
- Mixed-layer LCL
- 1179 m above ground
- 0-6 km bulk shear
- 28 kt
- 0-1 km storm-relative helicity
- 16 m²/s²
- 0-3 km storm-relative helicity
- 75 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.4
The text
As transmitted, in the capitals the NWS used until 2016.
890
WUUS51 KPHI 210157
SVRPHI
MDC011-029-035-210300-
/O.NEW.KPHI.SV.W.0052.150621T0157Z-150621T0300Z/
BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE MOUNT HOLLY NJ
957 PM EDT SAT JUN 20 2015
THE NATIONAL WEATHER SERVICE IN MOUNT HOLLY NJ HAS ISSUED A
* SEVERE THUNDERSTORM WARNING FOR...
QUEEN ANNE'S COUNTY IN NORTHEASTERN MARYLAND...
NORTHEASTERN CAROLINE COUNTY IN EASTERN MARYLAND...
KENT COUNTY IN NORTHEASTERN MARYLAND...
* UNTIL 1100 PM EDT
* AT 955 PM EDT...DOPPLER RADAR INDICATED A LINE OF SEVERE
THUNDERSTORMS CAPABLE OF PRODUCING DAMAGING WINDS IN EXCESS OF 60
MPH. THESE STORMS WERE LOCATED OVER THE CENTRAL PORTION OF
CHESAPEAKE BAY...AND MOVING NORTHEAST AT 40 MPH.
* LOCATIONS IMPACTED INCLUDE...
CENTERVILLE...CHESTERTOWN...CENTREVILLE...GREENSBORO...OAKLAND...
RIDGELY...ROCK HALL...CHURCH HILL...MILLINGTON...SUDLERSVILLE...
BETTERTON...GOLDSBORO...OLD TOWN...KENNEDYVILLE...STARR...HOPE...
MASSEY...GRASONVILLE...MORGNEC AND JUMPTOWN.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
SEVERE THUNDERSTORMS PRODUCE DAMAGING WINDS...LARGE HAIL...DEADLY
LIGHTNING AND VERY HEAVY RAIN. FOR YOUR PROTECTION...MOVE TO AN
INTERIOR ROOM ON THE LOWEST FLOOR OF YOUR HOME OR BUSINESS. HEAVY
RAINS FLOOD ROADS QUICKLY SO DO NOT DRIVE INTO AREAS WHERE WATER
COVERS THE ROAD.
THIS STORM HAS A HISTORY OF PRODUCING WIND DAMAGE. THIS IS A VERY
DANGEROUS SITUATION. SEEK SHELTER NOW INSIDE A STURDY STRUCTURE AND
STAY AWAY FROM WINDOWS.
&&
LAT...LON 3904 7631 3898 7628 3900 7617 3903 7624
3909 7623 3915 7628 3929 7617 3932 7618
3938 7606 3938 7577 3894 7575 3892 7620
3897 7625 3891 7624 3892 7625 3894 7628
3889 7629 3896 7631 3885 7637 3886 7637
TIME...MOT...LOC 0155Z 238DEG 35KT 3886 7648
$$
AMC1 follow-up statement
078
WWUS51 KPHI 210229
SVSPHI
SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE MOUNT HOLLY NJ
1029 PM EDT SAT JUN 20 2015
MDC011-029-035-210300-
/O.CON.KPHI.SV.W.0052.000000T0000Z-150621T0300Z/
QUEEN ANNE'S MD-CAROLINE MD-KENT MD-
1029 PM EDT SAT JUN 20 2015
...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 1100 PM EDT
FOR QUEEN ANNE'S...NORTHEASTERN CAROLINE AND KENT COUNTIES...
AT 1029 PM EDT...DOPPLER RADAR INDICATED A SEVERE THUNDERSTORM
CAPABLE OF PRODUCING DAMAGING WINDS IN EXCESS OF 60 MPH. THIS STORM
WAS LOCATED OVER CHURCH HILL...OR 7 MILES NORTHEAST OF CENTERVILLE...
MOVING NORTHEAST AT 60 MPH.
LOCATIONS IMPACTED INCLUDE...
CENTERVILLE...CHESTERTOWN...CENTREVILLE...GREENSBORO...OAKLAND...
RIDGELY...ROCK HALL...CHURCH HILL...MILLINGTON...SUDLERSVILLE...
BETTERTON...GOLDSBORO...OLD TOWN...KENNEDYVILLE...STARR...HOPE...
MASSEY...GRASONVILLE...MORGNEC AND JUMPTOWN.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
SEVERE THUNDERSTORMS PRODUCE DAMAGING WINDS...DESTRUCTIVE HAIL...
DEADLY LIGHTNING AND VERY HEAVY RAIN. FOR YOUR PROTECTION MOVE TO AN
INTERIOR ROOM ON THE LOWEST FLOOR OF YOUR HOME OR BUSINESS. HEAVY
RAINS FLOOD ROADS QUICKLY SO DO NOT DRIVE INTO AREAS WHERE WATER
COVERS THE ROAD.
THIS STORM HAS A HISTORY OF PRODUCING WIND DAMAGE. THIS IS A VERY
DANGEROUS SITUATION. SEEK SHELTER NOW INSIDE A STURDY STRUCTURE AND
STAY AWAY FROM WINDOWS.
&&
LAT...LON 3904 7631 3898 7628 3900 7617 3903 7624
3909 7623 3915 7628 3929 7617 3932 7618
3938 7606 3938 7577 3894 7575 3892 7620
3897 7625 3891 7624 3892 7625 3894 7628
3889 7629 3896 7631 3885 7637 3886 7637
TIME...MOT...LOC 0229Z 236DEG 52KT 3912 7596
$$
SFJThe office that day
Everything else NWS Philadelphia/Mount Holly issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jun 20, 8:31 PM EDT | Special Weather Statement | PHI | Caroline, Cecil, Queen Anne's, Talbot | 3 hr |
| Jun 20, 9:35 PM EDT | Severe Thunderstorm Warning | PHI | Caroline, Talbot | 55 min |
| Jun 20, 9:49 PM EDT | Severe Thunderstorm Warning | PHI | Cecil | 56 min |
| Jun 20, 10:32 PM EDT | Severe Thunderstorm Warning | PHI | Caroline | 46 min |
| Jun 21, 12:47 AM EDT | Areal Flood Advisory | PHI | Cecil | 4 hr |
| Jun 21, 4:45 AM EDT | Special Weather Statement | PHI | Queen Anne's | 30 min |
| Jun 21, 5:12 AM EDT | Areal Flood Advisory | PHI | Caroline, Cecil, Kent, Queen Anne's, Talbot | 4 hr |
Nearby
Severe Thunderstorm Warnings in Maryland, 2015Every severe thunderstorm warning in 2015
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.