Alert archive / Maryland / Severe Thunderstorm Warnings in 2015
Severe Thunderstorm Warning 10, NWS Philadelphia/Mount Holly
NWS Philadelphia/Mount Holly issued this severe thunderstorm warning at May 16, 2015, 6:45 PM EDT for Cecil County, Kent County, Queen Anne's County, Maryland; New Castle County, Delaware; Chester County, Pennsylvania. It was in force for 45 min. 1 report 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
- May 16, 2015, 6:45 PM EDT (22:45 UTC)
- Expired
- May 16, 2015, 7:30 PM EDT
- In force
- 45 min
- Issued by
- NWS Philadelphia/Mount Holly
- Area
- Storm-based polygon
Counties New Castle County, DE, Cecil County, MD, Kent County, MD, Queen Anne's County, MD, Chester County, PA
What was reported inside it
| Time | Report | Where | Remark |
|---|---|---|---|
| May 16, 6:54 PM EDT | TSTM WND DMG | Worton, MD | WIRES DOWN ON ST JAMES/NEW TOWN ROAD IN WORTON |
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 12:00Z, 10.8 hours before the alert went out and 125 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
- 20 J/kg
- Mixed-layer CIN
- -210 J/kg
- Mixed-layer LCL
- 1233 m above ground
- 0-6 km bulk shear
- 17 kt
- 0-1 km storm-relative helicity
- 106 m²/s²
- 0-3 km storm-relative helicity
- 95 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted, in the capitals the NWS used until 2016.
829
WUUS51 KPHI 162245
SVRPHI
DEC003-MDC015-029-035-PAC029-162330-
/O.NEW.KPHI.SV.W.0010.150516T2245Z-150516T2330Z/
BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE MOUNT HOLLY NJ
645 PM EDT SAT MAY 16 2015
THE NATIONAL WEATHER SERVICE IN MOUNT HOLLY NJ HAS ISSUED A
* SEVERE THUNDERSTORM WARNING FOR...
WESTERN NEW CASTLE COUNTY IN NORTHERN DELAWARE...
NORTH CENTRAL QUEEN ANNE'S COUNTY IN NORTHEASTERN MARYLAND...
KENT COUNTY IN NORTHEASTERN MARYLAND...
CECIL COUNTY IN NORTHEASTERN MARYLAND...
SOUTHWESTERN CHESTER COUNTY IN SOUTHEASTERN PENNSYLVANIA...
* UNTIL 730 PM EDT
* AT 644 PM EDT...DOPPLER RADAR INDICATED A LINE OF SEVERE
THUNDERSTORMS CAPABLE OF PRODUCING QUARTER SIZE HAIL AND DAMAGING
WINDS IN EXCESS OF 60 MPH. THESE STORMS WERE LOCATED ALONG A LINE
EXTENDING FROM NEAR ROCK SPRINGS TO NEAR MIDDLE RIVER TO FORT
SMALLWOOD STATE PARK...AND MOVING EAST AT 30 MPH.
* SEVERE THUNDERSTORMS WILL BE NEAR...
ROCK SPRINGS...RICHARDSMERE...CONOWINGO AND OCTORARO AROUND 650 PM
EDT.
NEWTOWN...WEST NOTTINGHAM AND WOODLAWN AROUND 655 PM EDT.
RISING SUN AND FARMINGTON AROUND 700 PM EDT.
CALVERT...BETTERTON...ZION AND BAY VIEW AROUND 705 PM EDT.
LOMBARD...BLAKE...KENNEDYVILLE AND PLEASANT HILL AROUND 710 PM EDT.
LANGFORD...FAIR HILL...ANDORA AND CHERRY HILL AROUND 715 PM EDT.
ELKTON...CHESTERTOWN...KEMBLESVILLE...APPLETON...OLD TOWN AND
BARKSDALE AROUND 720 PM EDT.
CECILTON...MILLINGTON...GLEN WESTOVER AND STARKEY CORNER AROUND 725
PM EDT.
OTHER LOCATIONS IMPACTED BY THESE SEVERE THUNDERSTORMS INCLUDE
KINGSTOWN...BROOKSIDE...CHESAPEAKE CITY...GALENA AND PERRYVILLE.
THE STRONGEST PART OF THE STORMS IS MOVING TOWARD KENT CONTY
MARYLAND.
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 3926 7622 3929 7617 3932 7618 3934 7616
3933 7614 3937 7611 3937 7606 3942 7600
3946 7601 3952 7598 3955 7603 3955 7609
3972 7623 3978 7571 3937 7572 3912 7600
3911 7624
TIME...MOT...LOC 2244Z 259DEG 28KT 3970 7620 3930 7627 3916 7647
$$
ROBERTSON1 follow-up statement
335
WWUS51 KPHI 162308
SVSPHI
SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE MOUNT HOLLY NJ
708 PM EDT SAT MAY 16 2015
PAC029-162317-
/O.CAN.KPHI.SV.W.0010.000000T0000Z-150516T2330Z/
CHESTER PA-
708 PM EDT SAT MAY 16 2015
...THE SEVERE THUNDERSTORM WARNING FOR SOUTHWESTERN CHESTER COUNTY IS
CANCELLED...
THE STORMS WHICH PROMPTED THE WARNING HAVE WEAKENED. THEREFORE THE
WARNING HAS BEEN CANCELLED.
LAT...LON 3957 7573 3943 7572 3937 7572 3912 7600
3911 7624 3923 7622 3933 7614 3937 7611
3937 7606 3942 7600 3946 7601 3952 7598
3953 7599
TIME...MOT...LOC 2307Z 258DEG 28KT 3950 7618 3933 7608 3919 7628
$$
DEC003-MDC015-029-035-162330-
/O.CON.KPHI.SV.W.0010.000000T0000Z-150516T2330Z/
NEW CASTLE DE-QUEEN ANNE'S MD-KENT MD-CECIL MD-
708 PM EDT SAT MAY 16 2015
...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 730 PM EDT
FOR SOUTHWESTERN NEW CASTLE...NORTH CENTRAL QUEEN ANNE'S...KENT AND
SOUTHEASTERN CECIL COUNTIES...
AT 707 PM EDT...DOPPLER RADAR INDICATED A LINE OF SEVERE
THUNDERSTORMS CAPABLE OF PRODUCING QUARTER SIZE HAIL AND DAMAGING
WINDS IN EXCESS OF 60 MPH. THESE STORMS WERE LOCATED ALONG A LINE
EXTENDING FROM ABERDEEN TO NEAR BETTERTON TO NEAR ROCK HALL...MOVING
EAST AT 30 MPH.
THESE SEVERE STORMS WILL BE NEAR...
BETTERTON AND KENNEDYVILLE AROUND 715 PM EDT.
CRUMPTON AROUND 720 PM EDT.
CHURCH HILL...CECILTON...MILLINGTON...SASSAFRAS...HOLLYWOOD
BEACH...MORGNEC...MASSEY...WARWICK...CAYOTS AND STARKEY CORNER AROUND
730 PM EDT.
OTHER LOCATIONS IMPACTED BY THESE SEVERE THUNDERSTORMS INCLUDE
CHESAPEAKE CITY...GALENA AND KINGSTOWN.
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 3957 7573 3943 7572 3937 7572 3912 7600
3911 7624 3923 7622 3933 7614 3937 7611
3937 7606 3942 7600 3946 7601 3952 7598
3953 7599
TIME...MOT...LOC 2307Z 258DEG 28KT 3950 7618 3933 7608 3919 7628
$$
ROBERTSONThe office that day
Everything else NWS Philadelphia/Mount Holly issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| May 16, 6:24 PM EDT | Special Weather Statement | PHI | Cecil, Kent | 66 min |
| May 16, 7:58 PM EDT | Special Weather Statement | PHI | Caroline, Talbot | 47 min |
| May 16, 4:46 PM EDT | Special Weather Statement | PHI | Pike | 44 min |
| May 16, 4:55 PM EDT | Special Weather Statement | PHI | Lehigh | 35 min |
| May 16, 5:09 PM EDT | Special Weather Statement | PHI | Berks, Chester | 66 min |
| May 16, 5:26 PM EDT | Severe Thunderstorm Warning | PHI | Monroe | 49 min |
| May 16, 5:36 PM EDT | Severe Thunderstorm Warning | PHI | Berks, Bucks, Lehigh, Montgomery, Northampton | 39 min |
| May 16, 5:57 PM EDT | Special Weather Statement | PHI | Berks, Chester, Lehigh, Montgomery | 63 min |
| May 16, 6:03 PM EDT | Areal Flood Advisory | PHI | Monroe | 3 hr |
| May 16, 6:16 PM EDT | Special Weather Statement | PHI | Lehigh | 44 min |
| May 16, 6:31 PM EDT | Severe Thunderstorm Warning | PHI | Berks, Bucks, Chester, Lehigh, Montgomery | 44 min |
| May 16, 6:55 PM EDT | Areal Flood Advisory | PHI | Monroe, Northampton | 3 hr |
| May 16, 6:58 PM EDT | Special Weather Statement | PHI | Monroe | 62 min |
| May 16, 7:04 PM EDT | Severe Thunderstorm Warning | PHI | Berks, Bucks, Lehigh, Montgomery, Northampton | 26 min |
| May 16, 7:34 PM EDT | Special Weather Statement | PHI | Bucks | 41 min |
| May 16, 7:35 PM EDT | Special Weather Statement | PHI | Delaware | 40 min |
Nearby
Severe Thunderstorm Warnings in Maryland, 2015Severe Thunderstorm Warnings in Delaware, 2015Severe Thunderstorm Warnings in Pennsylvania, 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.