Alert archive / Maryland / Severe Thunderstorm Warnings in 2019

Severe Thunderstorm Warning 7, NWS Philadelphia/Mount Holly

April 15, 2019Cecil County, Kent County, Maryland

NWS Philadelphia/Mount Holly issued this severe thunderstorm warning at Apr 15, 2019, 2:15 AM EDT for Cecil County, Kent County, Maryland. 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: Apr 15, 2019, 2:15 AM EDT (06:15 UTC)
Expired: Apr 15, 2019, 3:00 AM EDT
In force: 45 min
Issued by: NWS Philadelphia/Mount Holly
Area: Storm-based polygon
Tornado: Possible
Hail: 0.75 in
Wind: 60.0 mph

Counties Cecil County, MD, Kent County, MD

The radar

The Dover AFB radar (KDOX), 81 km from the middle of the area, began a volume at 06:16 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
Apr 15, 3:00 AM EDT	TSTM WND DMG	1 Ssw Bohemias Mills, MD	TREES REPORTED DOWN NEAR WARWICK. 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
Apr 15, 1:05 AM EDT	Tornado Watch	SPC	5 hr

The nearest sounding before it

Washington/Dulle, VA (KIAD), launched 00:00Z, 6.3 hours before the alert went out and 152 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.

Skew-T log-p

Temperature in red, dew point in green, the mixed-layer parcel dashed.

Hodograph

The wind turning with height, colored by layer: ground to 1 km, 1 to 3 km, 3 to 6 km, 6 to 10 km.

Mixed-layer CAPE: 243 J/kg
Mixed-layer CIN: -10 J/kg
Mixed-layer LCL: 961 m above ground
0-6 km bulk shear: 47 kt
0-1 km storm-relative helicity: 326 m²/s²
0-3 km storm-relative helicity: 478 m²/s²
Significant tornado parameter: 0.6
Supercell composite: 3.3

Open this sounding in Storm Lab

The text

As transmitted.

272 
WUUS51 KPHI 150615
SVRPHI
MDC015-029-150700-
/O.NEW.KPHI.SV.W.0007.190415T0615Z-190415T0700Z/

BULLETIN - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Warning
National Weather Service Mount Holly NJ
215 AM EDT MON APR 15 2019

The National Weather Service in Mount Holly NJ has issued a

* Severe Thunderstorm Warning for...
  Northwestern Kent County in northeastern Maryland...
  Southeastern Cecil County in northeastern Maryland...

* Until 300 AM EDT.

* At 214 AM EDT, a severe thunderstorm was located near Bowleys
  Quarters, or 7 miles northeast of Millers Island, moving northeast
  at 60 mph.

  HAZARD...60 mph wind gusts.

  SOURCE...Radar indicated.

  IMPACT...Damage to roofs, siding, trees, and power lines is 
           possible.

* Locations impacted include...
  Wilmington, Elkton, Pennsville, New Castle, Chestertown, North
  East, Delaware City, Rock Hall, Charlestown, Cecilton, Betterton,
  Warwick, Barksdale, Glasgow, Bear, Bohemias Mills, Newtown, Port
  Penn, Brantwood and Saint Georges.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Remain alert for a possible tornado! Tornadoes can develop quickly
from severe thunderstorms. If you spot a tornado go at once into the
basement or small central room in a sturdy structure.

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 this storm, and may lead to
flash flooding. Do not drive your vehicle through flooded roadways.

&&

A tornado watch remains in effect until 700 AM EDT for northern
Delaware...northeastern Maryland...and southern New Jersey.

LAT...LON 3932 7618 3943 7600 3952 7598 3955 7604
      3970 7579 3962 7579 3962 7562 3972 7551
      3962 7557 3966 7548 3961 7541 3958 7548
      3961 7551 3951 7558 3950 7558 3951 7577
      3939 7577 3912 7625 3917 7628
TIME...MOT...LOC 0614Z 234DEG 54KT 3929 7629 

TORNADO...POSSIBLE
HAIL...<.75IN
WIND...60MPH
 
$$

MPS

1 follow-up statement

059 
WWUS51 KPHI 150651
SVSPHI

Severe Weather Statement
National Weather Service Mount Holly NJ
251 AM EDT MON APR 15 2019

MDC015-029-150700-
/O.CON.KPHI.SV.W.0007.000000T0000Z-190415T0700Z/
Kent MD-Cecil MD-
251 AM EDT MON APR 15 2019

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 300 AM EDT
FOR NORTHWESTERN KENT AND SOUTHEASTERN CECIL COUNTIES...

At 250 AM EDT, a severe thunderstorm was located over Bear, or near
Newark, moving northeast at 60 mph.

HAZARD...60 mph wind gusts.

SOURCE...Radar indicated.

IMPACT...Damage to roofs, siding, trees, and power lines is 
         possible.

Locations impacted include...
Wilmington, Elkton, Pennsville, New Castle, Chestertown, North East,
Delaware City, Rock Hall, Charlestown, Cecilton, Betterton, Warwick,
Barksdale, Glasgow, Bear, Bohemias Mills, Newtown, Port Penn,
Brantwood and Saint Georges.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Remain alert for a possible tornado! Tornadoes can develop quickly
from severe thunderstorms. If you spot a tornado go at once into the
basement or small central room in a sturdy structure.

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 this storm, and may lead to
flash flooding. Do not drive your vehicle through flooded roadways.

&&

A tornado watch remains in effect until 700 AM EDT for northern
Delaware...northeastern Maryland...and southern New Jersey.

LAT...LON 3932 7618 3943 7600 3952 7598 3955 7604
      3970 7579 3962 7579 3962 7562 3972 7551
      3962 7557 3966 7548 3961 7541 3958 7548
      3961 7551 3951 7558 3950 7558 3951 7577
      3939 7577 3912 7625 3917 7628
TIME...MOT...LOC 0650Z 234DEG 54KT 3961 7571 

TORNADO...POSSIBLE
HAIL...<.75IN
WIND...60MPH
 
$$

MPS

The office that day

Everything else NWS Philadelphia/Mount Holly issued on the same UTC day.

Issued	Product	Office	Counties	Lasted
Apr 15, 2:25 AM EDT	Severe Thunderstorm Warning	PHI	Caroline, Kent, Queen Anne's, Talbot	50 min
Apr 15, 2:43 AM EDT	Tornado Warning	PHI	Caroline, Kent, Queen Anne's	32 min
Apr 15, 2:46 AM EDT	Severe Thunderstorm Warning	PHI	Cecil	44 min
Apr 15, 3:07 AM EDT	Severe Thunderstorm Warning	PHI	Caroline, Cecil, Kent, Queen Anne's, Talbot	38 min
Apr 15, 3:19 AM EDT	Wind Advisory	PHI	Caroline, Cecil, Kent, Queen Anne's, Talbot	18 hr
Apr 15, 3:21 AM EDT	Tornado Warning	PHI	Caroline	24 min
Apr 15, 3:36 AM EDT	Tornado Warning	PHI	Caroline	24 min

Nearby

Severe Thunderstorm Warnings in Maryland, 2019 Every 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.