Alert archive / Maryland / Severe Thunderstorm Warnings in 2017
Severe Thunderstorm Warning 33, NWS Philadelphia/Mount Holly
NWS Philadelphia/Mount Holly issued this severe thunderstorm warning at May 25, 2017, 7:09 PM EDT for Cecil County, Kent County, Queen Anne's County, Maryland. It was in force for 51 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 25, 2017, 7:09 PM EDT (23:09 UTC)
- Expired
- May 25, 2017, 8:00 PM EDT
- In force
- 51 min
- Issued by
- NWS Philadelphia/Mount Holly
- Area
- Storm-based polygon
- Hail
- 0.88 in
- Wind
- 60.0 mph
Counties Cecil County, MD, Kent County, MD, Queen Anne's County, MD
The radar
The Dover AFB radar (KDOX), 73 km from the middle of the area, began a volume at 23:11 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 |
|---|---|---|---|
| May 25, 7:18 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 nearest sounding before it
Washington/Dulle, VA (KIAD), launched 12:00Z, 11.2 hours before the alert went out and 129 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
- 532 m above ground
- 0-6 km bulk shear
- 53 kt
- 0-1 km storm-relative helicity
- 291 m²/s²
- 0-3 km storm-relative helicity
- 365 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted.
044
WUUS51 KPHI 252309
SVRPHI
MDC015-029-035-260000-
/O.NEW.KPHI.SV.W.0033.170525T2309Z-170526T0000Z/
BULLETIN - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Warning
National Weather Service Mount Holly NJ
709 PM EDT THU MAY 25 2017
The National Weather Service in Mount Holly NJ has issued a
* Severe Thunderstorm Warning for...
Northeastern Queen Anne's County in northeastern Maryland...
Kent County in northeastern Maryland...
Southeastern Cecil County in northeastern Maryland...
* Until 800 PM EDT
* At 709 PM EDT, a severe thunderstorm was located over Starkey
Corner, or near Centerville, moving northeast at 25 mph.
HAZARD...60 mph wind gusts and nickel size hail.
SOURCE...Radar indicated.
IMPACT...Expect damage to trees and power lines.
* Locations impacted include...
Chestertown, Centreville, Church Hill, Cecilton, Millington,
Sudlersville, Betterton, Sassafras, Old Town, Langford, Starkey
Corner, Morgnec, Massey, Crumpton, Carville, Kennedyville, Hope,
Galena, Barclay and Kingstown.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
For your protection move to an interior room on the lowest floor of a
building.
In addition to large hail and damaging winds...frequent cloud to
ground lightning is occurring with this storm. Move indoors
immediately. Remember...if you can hear thunder...you are close
enough to be struck by lightning.
Torrential rainfall is occurring with this storm, and may lead to
flash flooding. Do not drive your vehicle through flooded roadways.
&&
LAT...LON 3937 7608 3937 7606 3941 7603 3942 7600
3944 7600 3945 7601 3941 7577 3939 7577
3915 7583 3903 7595 3909 7619
TIME...MOT...LOC 2309Z 202DEG 15KT 3913 7601
HAIL...0.88IN
WIND...60MPH
$$
JRK2 follow-up statements
107
WWUS51 KPHI 252328
SVSPHI
Severe Weather Statement
National Weather Service Mount Holly NJ
728 PM EDT THU MAY 25 2017
MDC015-029-035-260000-
/O.CON.KPHI.SV.W.0033.000000T0000Z-170526T0000Z/
Queen Anne's MD-Kent MD-Cecil MD-
728 PM EDT THU MAY 25 2017
...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 800 PM EDT
FOR NORTHEASTERN QUEEN ANNE'S...NORTHEASTERN KENT AND SOUTHEASTERN
CECIL COUNTIES...
At 727 PM EDT, a severe thunderstorm was located over Sudlersville,
or 14 miles northeast of Centerville, moving north at 25 mph.
HAZARD...60 mph wind gusts and penny size hail.
SOURCE...Radar indicated.
IMPACT...Expect damage to trees and power lines.
Locations impacted include...
Chestertown, Church Hill, Cecilton, Millington, Sudlersville,
Betterton, Sassafras, Morgnec, Massey, Crumpton, Kennedyville, Galena
and Kingstown.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
For your protection move to an interior room on the lowest floor of a
building.
In addition to large hail and damaging winds...frequent cloud to
ground lightning is occurring with this storm. Move indoors
immediately. Remember...if you can hear thunder...you are close
enough to be struck by lightning.
Torrential rainfall is occurring with this storm, and may lead to
flash flooding. Do not drive your vehicle through flooded roadways.
&&
LAT...LON 3937 7608 3937 7606 3941 7603 3942 7600
3945 7601 3941 7577 3938 7577 3918 7582
3916 7584 3912 7598 3916 7606 3917 7606
3921 7615
TIME...MOT...LOC 2327Z 199DEG 21KT 3921 7589
HAIL...0.75IN
WIND...60MPH
$$
JRK843
WWUS51 KPHI 252339
SVSPHI
Severe Weather Statement
National Weather Service Mount Holly NJ
739 PM EDT THU MAY 25 2017
MDC015-029-035-260000-
/O.CON.KPHI.SV.W.0033.000000T0000Z-170526T0000Z/
Queen Anne's MD-Kent MD-Cecil MD-
739 PM EDT THU MAY 25 2017
...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 800 PM EDT
FOR NORTHEASTERN QUEEN ANNE'S...NORTHEASTERN KENT AND SOUTHEASTERN
CECIL COUNTIES...
At 739 PM EDT, a severe thunderstorm was located over Millington, or
13 miles southwest of Middletown, moving northeast at 30 mph.
HAZARD...60 mph wind gusts.
SOURCE...Radar indicated.
IMPACT...Expect damage to trees and power lines.
Locations impacted include...
Cecilton, Millington, Massey, Sassafras, Kennedyville and Galena.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
For your protection move to an interior room on the lowest floor of a
building.
In addition to large hail and damaging winds...frequent cloud to
ground lightning is occurring with this storm. Move indoors
immediately. Remember...if you can hear thunder...you are close
enough to be struck by lightning.
Torrential rainfall is occurring with this storm, and may lead to
flash flooding. Do not drive your vehicle through flooded roadways.
&&
LAT...LON 3920 7581 3930 7603 3944 7593 3941 7577
3938 7577
TIME...MOT...LOC 2339Z 205DEG 20KT 3927 7583
HAIL...<.75IN
WIND...60MPH
$$
JRKThe office that day
Everything else NWS Philadelphia/Mount Holly issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| May 25, 5:48 PM EDT | Severe Thunderstorm Warning | PHI | Queen Anne's, Talbot | 42 min |
| May 25, 6:26 PM EDT | Severe Thunderstorm Warning | PHI | Caroline, Kent, Queen Anne's, Talbot | 49 min |
| May 25, 7:56 PM EDT | Severe Thunderstorm Warning | PHI | Cecil, Kent | 49 min |
Nearby
Severe Thunderstorm Warnings in Maryland, 2017Every severe thunderstorm warning in 2017
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.