Alert archive / Maryland / Severe Thunderstorm Warnings in 2019
Severe Thunderstorm Warning 331, NWS Philadelphia/Mount Holly
NWS Philadelphia/Mount Holly issued this severe thunderstorm warning at Aug 7, 2019, 4:07 PM EDT for Cecil County, Kent County, Queen Anne's County, Maryland. It was in force for 53 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
- Aug 7, 2019, 4:07 PM EDT (20:07 UTC)
- Expired
- Aug 7, 2019, 5:00 PM EDT
- In force
- 53 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), 78 km from the middle of the area, began a volume at 20:09 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 |
|---|---|---|---|
| Aug 7, 5:00 PM EDT | TSTM WND DMG | Chestertown, MD | SEVERAL REPORTS OF WIRES BLOWN DOWN AND NUMEROUS POWER OUTAGES AROUND CHESTERTOWN. TIME ESTIMATED FROM RADAR. |
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 |
|---|---|---|---|
| Aug 7, 2:10 PM EDT | Severe Thunderstorm Watch | SPC | 7 hr |
The nearest sounding before it
Washington/Dulle, VA (KIAD), launched 12:00Z, 8.1 hours before the alert went out and 110 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
- 371 J/kg
- Mixed-layer CIN
- -114 J/kg
- Mixed-layer LCL
- 1115 m above ground
- 0-6 km bulk shear
- 31 kt
- 0-1 km storm-relative helicity
- 11 m²/s²
- 0-3 km storm-relative helicity
- 70 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.2
The text
As transmitted.
028
WUUS51 KPHI 072007
SVRPHI
MDC015-029-035-072100-
/O.NEW.KPHI.SV.W.0331.190807T2007Z-190807T2100Z/
BULLETIN - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Warning
National Weather Service Mount Holly NJ
407 PM EDT Wed Aug 7 2019
The National Weather Service in Mount Holly NJ has issued a
* Severe Thunderstorm Warning for...
Central Queen Anne's County in northeastern Maryland...
Kent County in northeastern Maryland...
Cecil County in northeastern Maryland...
* Until 500 PM EDT.
* At 407 PM EDT, severe thunderstorms were located along a line
extending from near Conowingo to near Bowleys Quarters to near
Crofton, moving east at 15 mph.
HAZARD...60 mph wind gusts and nickel size hail.
SOURCE...Radar indicated.
IMPACT...Damage to roofs, siding, trees, and power lines is
possible.
* Locations impacted include...
Elkton, Havre De Grace, Calvert, Chestertown, North East, Rising
Sun, Rock Hall, Charlestown, Cecilton, Betterton, Zion, Blake,
Barksdale, Old Town, Newtown, West Nottingham, Octoraro, Morgnec,
Fair Hill and Bay View.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
For your protection move to an interior room on the lowest floor of a
building.
To report severe weather, contact your nearest law enforcement
agency. They will send your report to the National Weather Service
office in Mount Holly NJ.
In addition to large hail and damaging winds, frequent cloud to
ground lightning is occurring with these storms. Move indoors
immediately. Remember, if you can hear thunder, you are close enough
to be struck by lightning.
Torrential rainfall is occurring with these storms, and may lead to
flash flooding. Do not drive your vehicle through flooded roadways.
&&
LAT...LON 3903 7631 3904 7631 3901 7628 3905 7623
3917 7628 3926 7622 3929 7617 3932 7618
3942 7600 3952 7598 3955 7603 3955 7609
3972 7623 3972 7580 3933 7587 3902 7623
3900 7629 3898 7628 3893 7634 3893 7636
TIME...MOT...LOC 2007Z 266DEG 15KT 3966 7622 3931 7628 3902 7663
HAIL...0.88IN
WIND...60MPH
$$
MPS2 follow-up statements
568
WWUS51 KPHI 072034
SVSPHI
Severe Weather Statement
National Weather Service Mount Holly NJ
434 PM EDT Wed Aug 7 2019
MDC015-029-035-072100-
/O.CON.KPHI.SV.W.0331.000000T0000Z-190807T2100Z/
Queen Anne's MD-Kent MD-Cecil MD-
434 PM EDT Wed Aug 7 2019
...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 500 PM EDT
FOR CENTRAL QUEEN ANNE'S...KENT AND SOUTHEASTERN CECIL COUNTIES...
At 434 PM EDT, severe thunderstorms were located along a line
extending from near Aberdeen Proving Ground to Newtown to near
Arnold, moving southeast at 20 mph.
HAZARD...60 mph wind gusts and nickel size hail.
SOURCE...Radar indicated.
IMPACT...Damage to roofs, siding, trees, and power lines is
possible.
Locations impacted include...
Chestertown, Rock Hall, Cecilton, Old Town, Stevensville, Langford,
Newtown, Morgnec, Hollywood Beach, Kennedyville, Perryville, Galena,
Stevensville South and Kingstown.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
For your protection move to an interior room on the lowest floor of a
building.
To report severe weather contact your nearest law enforcement agency.
They will send your report to the National Weather Service office in
Mount Holly NJ.
Torrential rainfall is occurring with these storms, and may lead to
flash flooding. Do not drive your vehicle through flooded roadways.
&&
LAT...LON 3903 7631 3904 7631 3901 7628 3905 7623
3909 7623 3917 7628 3926 7622 3929 7617
3933 7616 3937 7606 3943 7600 3952 7598
3955 7603 3955 7608 3958 7609 3948 7584
3933 7587 3893 7636
TIME...MOT...LOC 2034Z 312DEG 16KT 3948 7607 3930 7617 3907 7653
HAIL...0.88IN
WIND...60MPH
$$
MPS859
WWUS51 KPHI 072051 RRA
SVSPHI
Severe Weather Statement
National Weather Service Mount Holly NJ
451 PM EDT Wed Aug 7 2019
MDC015-029-035-072101-
/O.EXP.KPHI.SV.W.0331.000000T0000Z-190807T2100Z/
Queen Anne's MD-Kent MD-Cecil MD-
451 PM EDT Wed Aug 7 2019
...THE SEVERE THUNDERSTORM WARNING FOR CENTRAL QUEEN ANNE'S...KENT
AND SOUTHEASTERN CECIL COUNTIES WILL EXPIRE AT 500 PM EDT...
The storms which prompted the warning have weakened below severe
limits, and no longer pose 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.
A new Severe Thunderstorm Warning may be needed.
A severe thunderstorm watch remains in effect until 900 PM EDT for
northeastern Maryland.
To report severe weather, contact your nearest law enforcement
agency. They will relay your report to the National Weather Service
Mount Holly NJ.
LAT...LON 3903 7631 3904 7631 3901 7628 3905 7623
3909 7623 3917 7628 3926 7622 3929 7617
3933 7616 3937 7606 3943 7600 3952 7598
3955 7603 3955 7608 3958 7609 3948 7584
3933 7587 3893 7636
TIME...MOT...LOC 2051Z 266DEG 15KT 3948 7599 3930 7609 3907 7645
$$
MPSThe office that day
Everything else NWS Philadelphia/Mount Holly issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Aug 6, 10:29 PM EDT | Special Weather Statement | PHI | Talbot | 46 min |
| Aug 7, 4:57 PM EDT | Severe Thunderstorm Warning | PHI | Caroline, Cecil, Kent, Queen Anne's, Talbot | 63 min |
| Aug 7, 5:33 PM EDT | Severe Thunderstorm Warning | PHI | Caroline, Cecil, Kent, Queen Anne's, Talbot | 42 min |
| Aug 7, 5:53 PM EDT | Severe Thunderstorm Warning | PHI | Caroline, Talbot | 52 min |
| Aug 7, 6:39 PM EDT | Severe Thunderstorm Warning | PHI | Caroline | 51 min |
Nearby
Severe Thunderstorm Warnings in Maryland, 2019Every severe thunderstorm warning in 2019
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.