Alert archive / Maryland / Severe Thunderstorm Warnings in 2015
Severe Thunderstorm Warning 69, NWS Philadelphia/Mount Holly
NWS Philadelphia/Mount Holly issued this severe thunderstorm warning at Jun 27, 2015, 6:43 PM EDT for 4 counties in Maryland; Kent County, New Castle County, Delaware. It was in force for 47 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 27, 2015, 6:43 PM EDT (22:43 UTC)
- Expired
- Jun 27, 2015, 7:30 PM EDT
- In force
- 47 min
- Issued by
- NWS Philadelphia/Mount Holly
- Area
- Storm-based polygon
Counties Kent County, DE, New Castle County, DE, Caroline County, MD, Cecil County, MD, Kent County, MD, Queen Anne's County, MD
The radar
The Dover AFB radar (KDOX), 63 km from the middle of the area, began a volume at 22:46 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 27, 6:57 PM EDT | TSTM WND DMG | Millington, MD | TREES DOWN |
| Jun 27, 7:03 PM EDT | TSTM WND DMG | Crumpton, MD | TREES DOWN |
| Jun 27, 7:22 PM EDT | TSTM WND DMG | 1 Ese Armstrong, DE | DOWNED TREES AND WIRES |
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 27, 1:54 PM EDT | Tornado Watch | SPC | 6 hr |
The nearest sounding before it
Washington/Dulle, VA (KIAD), launched 12:00Z, 10.7 hours before the alert went out and 145 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
- 603 m above ground
- 0-6 km bulk shear
- 31 kt
- 0-1 km storm-relative helicity
- 153 m²/s²
- 0-3 km storm-relative helicity
- 202 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted, in the capitals the NWS used until 2016.
875
WUUS51 KPHI 272243
SVRPHI
DEC001-003-MDC011-015-029-035-272330-
/O.NEW.KPHI.SV.W.0069.150627T2243Z-150627T2330Z/
BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE MOUNT HOLLY NJ
643 PM EDT SAT JUN 27 2015
THE NATIONAL WEATHER SERVICE IN MOUNT HOLLY NJ HAS ISSUED A
* SEVERE THUNDERSTORM WARNING FOR...
SOUTHWESTERN NEW CASTLE COUNTY IN NORTHERN DELAWARE...
NORTHWESTERN KENT COUNTY IN CENTRAL DELAWARE...
NORTHEASTERN QUEEN ANNE'S COUNTY IN NORTHEASTERN MARYLAND...
NORTHEASTERN CAROLINE COUNTY IN EASTERN MARYLAND...
NORTHEASTERN KENT COUNTY IN NORTHEASTERN MARYLAND...
SOUTHEASTERN CECIL COUNTY IN NORTHEASTERN MARYLAND...
* UNTIL 730 PM EDT
* AT 642 PM EDT...DOPPLER RADAR INDICATED A LINE OF SEVERE
THUNDERSTORMS CAPABLE OF PRODUCING DAMAGING WINDS IN EXCESS OF 60
MPH. THESE STORMS WERE LOCATED ALONG A LINE EXTENDING FROM NEAR
MASSEY TO NEAR SUDLERSVILLE TO NEAR HOPE...AND MOVING NORTHEAST AT
30 MPH.
* LOCATIONS IMPACTED INCLUDE...
DOVER...MIDDLETOWN...SMYRNA...CHESTERTOWN...CENTREVILLE...
CLAYTON...CHESWOLD...CHURCH HILL...CECILTON...MILLINGTON...
SUDLERSVILLE...BETTERTON...HARTLY...KENNEDYVILLE...BOHEMIAS
MILLS...DELANEY CORNER...WARWICK...HOPE...MASSEY AND MORGNEC.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
A TORNADO WATCH REMAINS IN EFFECT FOR THE AREA. ALTHOUGH A TORNADO IS
NOT IMMEDIATELY LIKELY...IF ONE IS SPOTTED...ACT QUICKLY AND MOVE TO
A PLACE OF SAFETY IN A STURDY STRUCTURE...SUCH AS A BASEMENT OR SMALL
INTERIOR ROOM.
SEVERE THUNDERSTORMS PRODUCE DAMAGING WINDS...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.
&&
A TORNADO WATCH REMAINS IN EFFECT UNTIL 800 PM EDT FOR CENTRAL
DELAWARE AND EASTERN MARYLAND.
LAT...LON 3937 7606 3954 7561 3950 7558 3944 7558
3934 7550 3933 7550 3933 7548 3916 7549
3901 7606 3917 7605 3931 7612 3936 7612
TIME...MOT...LOC 2242Z 234DEG 27KT 3930 7589 3916 7592 3909 7596
$$
JRK3 follow-up statements
241
WWUS51 KPHI 272256
SVSPHI
SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE MOUNT HOLLY NJ
656 PM EDT SAT JUN 27 2015
DEC001-003-MDC011-015-029-035-272330-
/O.CON.KPHI.SV.W.0069.000000T0000Z-150627T2330Z/
NEW CASTLE DE-KENT DE-QUEEN ANNE'S MD-CAROLINE MD-KENT MD-CECIL MD-
656 PM EDT SAT JUN 27 2015
...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 730 PM EDT
FOR SOUTHWESTERN NEW CASTLE...NORTHWESTERN KENT...NORTHEASTERN QUEEN
ANNE'S...NORTHERN CAROLINE...NORTHEASTERN KENT AND SOUTHEASTERN CECIL
COUNTIES...
AT 655 PM EDT...DOPPLER RADAR INDICATED A LINE OF SEVERE
THUNDERSTORMS CAPABLE OF PRODUCING DAMAGING WINDS IN EXCESS OF 60
MPH. THESE STORMS WERE LOCATED ALONG A LINE EXTENDING FROM NEAR
CECILTON TO MILLINGTON TO SUDLERSVILLE...MOVING NORTHEAST AT 25 MPH.
LOCATIONS IMPACTED INCLUDE...
DOVER...MIDDLETOWN...SMYRNA...CLAYTON...CHESWOLD...CECILTON...
MILLINGTON...SUDLERSVILLE...HARTLY...SASSAFRAS...BOHEMIAS MILLS...
GREEN SPRING...DELANEY CORNER...CRUMPTON...WARWICK...MASSEY...
TOWNSEND...GALENA...ODESSA AND KENTON.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
A TORNADO WATCH REMAINS IN EFFECT FOR THE WARNED AREA. ALTHOUGH A
TORNADO IS NOT IMMEDIATELY LIKELY...IF ONE IS SPOTTED...ACT QUICKLY
AND MOVE TO A PLACE OF SAFETY IN A STURDY STRUCTURE...SUCH AS A
BASEMENT OR SMALL INTERIOR ROOM.
SEVERE THUNDERSTORMS PRODUCE DAMAGING WINDS...DEADLY LIGHTNING AND
VERY HEAVY RAIN. FOR YOUR PROTECTION MOVE TO AN INTERIOR ROOM ON THE
LOWEST FLOOR OF YOUR HOME OR BUSINESS. HEAVY RAINS FLOOD ROADS
QUICKLY SO DO NOT DRIVE INTO AREAS WHERE WATER COVERS THE ROAD.
&&
A TORNADO WATCH REMAINS IN EFFECT UNTIL 800 PM EDT FOR CENTRAL
DELAWARE AND EASTERN MARYLAND.
LAT...LON 3920 7549 3911 7583 3921 7592 3940 7598
3954 7561 3950 7558 3944 7558 3934 7550
3933 7550 3933 7548
TIME...MOT...LOC 2255Z 226DEG 21KT 3941 7592 3925 7587 3917 7584
$$
JRK118
WWUS51 KPHI 272316
SVSPHI
SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE MOUNT HOLLY NJ
716 PM EDT SAT JUN 27 2015
MDC011-272325-
/O.CAN.KPHI.SV.W.0069.000000T0000Z-150627T2330Z/
CAROLINE MD-
716 PM EDT SAT JUN 27 2015
...THE SEVERE THUNDERSTORM WARNING FOR NORTHERN CAROLINE COUNTY IS
CANCELLED...
THE STORMS WHICH PROMPTED THE WARNING HAVE MOVED OUT OF THE WARNED
AREA. THEREFORE THE WARNING HAS BEEN CANCELLED.
LAT...LON 3925 7549 3919 7573 3929 7581 3945 7586
3954 7561 3950 7558 3944 7558 3934 7550
3933 7550 3933 7548
TIME...MOT...LOC 2315Z 250DEG 18KT 3941 7579 3927 7574 3922 7573
$$
DEC001-003-MDC015-029-035-272330-
/O.CON.KPHI.SV.W.0069.000000T0000Z-150627T2330Z/
NEW CASTLE DE-KENT DE-QUEEN ANNE'S MD-KENT MD-CECIL MD-
716 PM EDT SAT JUN 27 2015
...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 730 PM EDT
FOR SOUTHWESTERN NEW CASTLE...NORTHWESTERN KENT...NORTHEASTERN QUEEN
ANNE'S...NORTHEASTERN KENT AND SOUTHEASTERN CECIL COUNTIES...
AT 715 PM EDT...DOPPLER RADAR INDICATED A LINE OF SEVERE
THUNDERSTORMS CAPABLE OF PRODUCING DAMAGING WINDS IN EXCESS OF 60
MPH. THESE STORMS WERE LOCATED ALONG A LINE EXTENDING FROM WARWICK TO
NEAR DELANEY CORNER TO NEAR HARTLY...MOVING EAST AT 25 MPH.
LOCATIONS IMPACTED INCLUDE...
MIDDLETOWN...SMYRNA...CLAYTON...SASSAFRAS...BOHEMIAS MILLS...GREEN
SPRING...DELANEY CORNER...WARWICK...TOWNSEND...ODESSA...KENTON...
LEIPSIC AND CHAMBERSVILLE.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
A TORNADO WATCH REMAINS IN EFFECT FOR A PORTION OF THE WARNED AREA.
ALTHOUGH A TORNADO IS NOT IMMEDIATELY LIKELY...IF ONE IS
SPOTTED...ACT QUICKLY AND MOVE TO A PLACE OF SAFETY IN A STURDY
STRUCTURE...SUCH AS A BASEMENT OR SMALL INTERIOR ROOM.
SEVERE THUNDERSTORMS PRODUCE DAMAGING WINDS...DEADLY LIGHTNING AND
VERY HEAVY RAIN. FOR YOUR PROTECTION MOVE TO AN INTERIOR ROOM ON THE
LOWEST FLOOR OF YOUR HOME OR BUSINESS. HEAVY RAINS FLOOD ROADS
QUICKLY SO DO NOT DRIVE INTO AREAS WHERE WATER COVERS THE ROAD.
&&
A TORNADO WATCH REMAINS IN EFFECT UNTIL 800 PM EDT FOR CENTRAL
DELAWARE AND EASTERN MARYLAND.
LAT...LON 3925 7549 3919 7573 3929 7581 3945 7586
3954 7561 3950 7558 3944 7558 3934 7550
3933 7550 3933 7548
TIME...MOT...LOC 2315Z 250DEG 18KT 3941 7579 3927 7574 3922 7573
$$
JRK751
WWUS51 KPHI 272326
SVSPHI
SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE MOUNT HOLLY NJ
726 PM EDT SAT JUN 27 2015
DEC001-003-MDC015-029-035-272336-
/O.EXP.KPHI.SV.W.0069.000000T0000Z-150627T2330Z/
NEW CASTLE DE-KENT DE-QUEEN ANNE'S MD-KENT MD-CECIL MD-
726 PM EDT SAT JUN 27 2015
...THE SEVERE THUNDERSTORM WARNING FOR SOUTHWESTERN NEW CASTLE...
NORTHWESTERN KENT...NORTHEASTERN QUEEN ANNE'S...NORTHEASTERN KENT AND
SOUTHEASTERN CECIL COUNTIES WILL EXPIRE AT 730 PM EDT...
THE STORMS WHICH PROMPTED THE WARNING HAVE WEAKENED BELOW SEVERE
LIMITS...AND NO LONGER POSES AN IMMEDIATE THREAT TO LIFE OR PROPERTY.
THEREFORE THE WARNING WILL BE ALLOWED TO EXPIRE. HOWEVER GUSTY WINDS
AND HEAVY RAIN ARE STILL POSSIBLE WITH THESE THUNDERSTORMS.
LAT...LON 3925 7549 3919 7573 3929 7581 3945 7586
3954 7561 3950 7558 3944 7558 3934 7550
3933 7550 3933 7548
TIME...MOT...LOC 2324Z 234DEG 27KT 3941 7579 3927 7574 3922 7573
$$
JRKThe office that day
Everything else NWS Philadelphia/Mount Holly issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jun 27, 5:21 PM EDT | Areal Flood Advisory | PHI | Caroline, Cecil, Kent, Queen Anne's, Talbot | 4 hr |
| Jun 27, 5:48 PM EDT | Severe Thunderstorm Warning | PHI | Caroline, Queen Anne's, Talbot | 42 min |
| Jun 27, 5:58 PM EDT | Severe Thunderstorm Warning | PHI | Kent, Queen Anne's | 47 min |
| Jun 27, 7:42 PM EDT | Flash Flood Warning | PHI | Cecil, Kent, Queen Anne's | 4 hr |
| Jun 27, 5:30 PM EDT | Coastal Flood Advisory | PHI | New Castle | 7 hr |
| Jun 27, 5:35 PM EDT | Areal Flood Advisory | PHI | New Castle | 4 hr |
| Jun 27, 7:29 PM EDT | Areal Flood Advisory | PHI | New Castle | 4 hr |
Nearby
Severe Thunderstorm Warnings in Maryland, 2015Severe Thunderstorm Warnings in Delaware, 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.