Alert archive / Maryland / Severe Thunderstorm Warnings in 2015
Severe Thunderstorm Warning 51, NWS Philadelphia/Mount Holly
NWS Philadelphia/Mount Holly issued this severe thunderstorm warning at Jun 20, 2015, 9:49 PM EDT for Cecil County, Maryland. It was in force for 56 min. 4 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, 9:49 PM EDT (01:49 UTC)
- Expired
- Jun 20, 2015, 10:45 PM EDT
- In force
- 56 min
- Issued by
- NWS Philadelphia/Mount Holly
- Area
- Storm-based polygon
County Cecil County, MD
The radar
The Dover AFB radar (KDOX), 95 km from the middle of the area, began a volume at 01:53 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, 10:00 PM EDT | TSTM WND DMG | Perryville, MD | TREE DOWN |
| Jun 20, 10:06 PM EDT | TSTM WND DMG | Rising Sun, MD | TREE DOWN |
| Jun 20, 10:20 PM EDT | TSTM WND DMG | Earleville, MD | TREE DOWN |
| Jun 20, 10:33 PM EDT | TSTM WND DMG | Elkton, 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, 1.8 hours before the alert went out and 188 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.
882
WUUS51 KPHI 210149
SVRPHI
MDC015-210245-
/O.NEW.KPHI.SV.W.0051.150621T0149Z-150621T0245Z/
BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE MOUNT HOLLY NJ
949 PM EDT SAT JUN 20 2015
THE NATIONAL WEATHER SERVICE IN MOUNT HOLLY NJ HAS ISSUED A
* SEVERE THUNDERSTORM WARNING FOR...
CECIL COUNTY IN NORTHEASTERN MARYLAND...
* UNTIL 1045 PM EDT
* AT 947 PM EDT...DOPPLER RADAR INDICATED A SEVERE THUNDERSTORM
CAPABLE OF PRODUCING DAMAGING WINDS IN EXCESS OF 60 MPH. THIS STORM
WAS LOCATED OVER ABERDEEN...AND MOVING NORTHEAST AT 40 MPH.
* LOCATIONS IMPACTED INCLUDE...
ELKTON...CALVERT...NORTH EAST...RISING SUN...CHARLESTOWN...
CECILTON...CAYOTS...BLAKE...PLEASANT HILL...ANDORA...
RICHARDSMERE...WOODLAWN...HOLLYWOOD BEACH...APPLETON...CHERRY
HILL...BAY VIEW...OCTORARO...FARMINGTON...BARKSDALE AND CONOWINGO.
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.
&&
LAT...LON 3972 7579 3940 7578 3938 7605 3943 7600
3946 7601 3947 7600 3952 7598 3955 7603
3955 7608 3965 7616 3967 7620 3971 7623
TIME...MOT...LOC 0147Z 238DEG 35KT 3954 7615
$$
AMC1 follow-up statement
118
WWUS51 KPHI 210215
SVSPHI
SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE MOUNT HOLLY NJ
1015 PM EDT SAT JUN 20 2015
MDC015-210245-
/O.CON.KPHI.SV.W.0051.000000T0000Z-150621T0245Z/
CECIL MD-
1015 PM EDT SAT JUN 20 2015
...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 1045 PM EDT
FOR CECIL COUNTY...
AT 1015 PM EDT...DOPPLER RADAR INDICATED A SEVERE THUNDERSTORM
CAPABLE OF PRODUCING DAMAGING WINDS IN EXCESS OF 60 MPH. THIS STORM
WAS LOCATED OVER BAY VIEW...OR 7 MILES WEST OF ELKTON...MOVING
NORTHEAST AT 40 MPH.
LOCATIONS IMPACTED INCLUDE...
ELKTON...CALVERT...NORTH EAST...RISING SUN...CHARLESTOWN...
CECILTON...CAYOTS...BLAKE...PLEASANT HILL...ANDORA...RICHARDSMERE...
WOODLAWN...HOLLYWOOD BEACH...APPLETON...CHERRY HILL...BAY VIEW...
OCTORARO...FARMINGTON...BARKSDALE AND CONOWINGO.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
SEVERE THUNDERSTORMS PRODUCE DAMAGING WINDS...DESTRUCTIVE HAIL...
DEADLY LIGHTNING AND VERY HEAVY RAIN. FOR YOUR PROTECTION MOVE TO AN
INTERIOR ROOM ON THE LOWEST FLOOR OF YOUR HOME OR BUSINESS. HEAVY
RAINS FLOOD ROADS QUICKLY SO DO NOT DRIVE INTO AREAS WHERE WATER
COVERS THE ROAD.
&&
LAT...LON 3972 7579 3940 7578 3938 7605 3943 7600
3946 7601 3947 7600 3952 7598 3955 7603
3955 7608 3965 7616 3967 7620 3971 7623
TIME...MOT...LOC 0215Z 240DEG 24KT 3963 7595
$$
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, 9:57 PM EDT | Severe Thunderstorm Warning | PHI | Caroline, Kent, Queen Anne's | 63 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.