Alert archive / Maryland / Severe Thunderstorm Warnings in 2019
Severe Thunderstorm Warning 17, NWS Philadelphia/Mount Holly
NWS Philadelphia/Mount Holly issued this severe thunderstorm warning at Apr 19, 2019, 9:38 PM EDT for Caroline County, Talbot County, Maryland; Kent County, Sussex County, Delaware. It was in force for 37 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 19, 2019, 9:38 PM EDT (01:38 UTC)
- Expired
- Apr 19, 2019, 10:15 PM EDT
- In force
- 37 min
- Issued by
- NWS Philadelphia/Mount Holly
- Area
- Storm-based polygon
- Tornado
- Possible
- Hail
- 0.75 in
- Wind
- 60.0 mph
Counties Kent County, DE, Sussex County, DE, Caroline County, MD, Talbot County, MD
The radar
The Dover AFB radar (KDOX), 42 km from the middle of the area, began a volume at 01:38 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 19, 10:10 PM EDT | TSTM WND DMG | 3 W Greenwood, DE | TWO VERY LARGE TREES BLOWN DOWN. |
Local storm reports filed while the alert was in force, from inside its polygon or its counties.
The nearest sounding before it
Wallops Is Stn, VA (KWAL), launched 00:00Z, 1.6 hours before the alert went out and 95 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
- 106 J/kg
- Mixed-layer CIN
- -74 J/kg
- Mixed-layer LCL
- 669 m above ground
- 0-6 km bulk shear
- 51 kt
- 0-1 km storm-relative helicity
- 358 m²/s²
- 0-3 km storm-relative helicity
- 377 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.3
The text
As transmitted.
674
WUUS51 KPHI 200138
SVRPHI
DEC001-005-MDC011-041-200215-
/O.NEW.KPHI.SV.W.0017.190420T0138Z-190420T0215Z/
BULLETIN - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Warning
National Weather Service Mount Holly NJ
938 PM EDT FRI APR 19 2019
The National Weather Service in Mount Holly NJ has issued a
* Severe Thunderstorm Warning for...
West central Sussex County in southern Delaware...
Southwestern Kent County in central Delaware...
Southeastern Talbot County in eastern Maryland...
Caroline County in eastern Maryland...
* Until 1015 PM EDT.
* At 938 PM EDT, a severe thunderstorm was located over Hurlock,
moving northeast at 70 mph.
HAZARD...60 mph wind gusts.
SOURCE...Radar indicated.
IMPACT...Damage to roofs, siding, trees, and power lines is
possible.
* Locations impacted include...
Denton, Harrington, Federalsburg, Greensboro, Oakland, Ridgely,
Trappe, Preston, Goldsboro, Tanyard, Harmony, Smithville, Agner,
Matthews, Choptank, Griffin, Windyhill, Sandtown, Andrewsville and
Greenwood.
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.
This severe thunderstorm may contain little or no lightning. Do not
wait until you hear thunder before taking cover.
&&
LAT...LON 3859 7606 3860 7606 3863 7609 3910 7583
3893 7548 3864 7571 3869 7577 3868 7580
3870 7580 3871 7584 3870 7590 3866 7596
3860 7599 3857 7604
TIME...MOT...LOC 0138Z 210DEG 59KT 3867 7587
TORNADO...POSSIBLE
HAIL...<.75IN
WIND...60MPH
$$
CMS2 follow-up statements
413
WWUS51 KPHI 200157
SVSPHI
Severe Weather Statement
National Weather Service Mount Holly NJ
957 PM EDT FRI APR 19 2019
MDC041-200206-
/O.CAN.KPHI.SV.W.0017.000000T0000Z-190420T0215Z/
Talbot MD-
957 PM EDT FRI APR 19 2019
...THE SEVERE THUNDERSTORM WARNING FOR SOUTHEASTERN TALBOT COUNTY IS
CANCELLED...
The severe thunderstorm which prompted the warning has moved out of
the warned area. Therefore, the warning has been cancelled.
LAT...LON 3869 7577 3868 7580 3870 7580 3871 7584
3870 7588 3876 7599 3881 7590 3882 7590
3884 7593 3886 7592 3886 7593 3909 7581
3893 7548 3864 7571
TIME...MOT...LOC 0156Z 209DEG 45KT 3877 7577
$$
DEC001-005-MDC011-200215-
/O.CON.KPHI.SV.W.0017.000000T0000Z-190420T0215Z/
Sussex DE-Kent DE-Caroline MD-
957 PM EDT FRI APR 19 2019
...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 1015 PM EDT
FOR WEST CENTRAL SUSSEX...SOUTHWESTERN KENT AND CAROLINE COUNTIES...
At 956 PM EDT, a severe thunderstorm was located over Agner, or 11
miles northeast of Hurlock, moving northeast at 50 mph.
HAZARD...60 mph wind gusts.
SOURCE...Radar indicated.
IMPACT...Damage to roofs, siding, trees, and power lines is
possible.
Locations impacted include...
Denton, Harrington, Federalsburg, Greensboro, Ridgely, Preston,
Goldsboro, Harmony, Smithville, Agner, Griffin, Sandtown,
Andrewsville, Greenwood, Houston and Farmington.
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.
This severe thunderstorm may contain little or no lightning. Do not
wait until you hear thunder before taking cover.
&&
LAT...LON 3869 7577 3868 7580 3870 7580 3871 7584
3870 7588 3876 7599 3881 7590 3882 7590
3884 7593 3886 7592 3886 7593 3909 7581
3893 7548 3864 7571
TIME...MOT...LOC 0156Z 209DEG 45KT 3877 7577
TORNADO...POSSIBLE
HAIL...<.75IN
WIND...60MPH
$$
CMS822
WWUS51 KPHI 200212
SVSPHI
Severe Weather Statement
National Weather Service Mount Holly NJ
1012 PM EDT FRI APR 19 2019
DEC001-005-MDC011-200222-
/O.EXP.KPHI.SV.W.0017.000000T0000Z-190420T0215Z/
Sussex DE-Kent DE-Caroline MD-
1012 PM EDT FRI APR 19 2019
...THE SEVERE THUNDERSTORM WARNING FOR WEST CENTRAL SUSSEX...
SOUTHWESTERN KENT AND CAROLINE COUNTIES WILL EXPIRE AT 1015 PM EDT...
The storm which prompted the warning has weakened below severe
limits, and no longer poses an immediate threat to life or property.
Therefore, the warning will be allowed to expire. However gusty
winds and heavy rain are still possible with this thunderstorm.
LAT...LON 3869 7577 3868 7580 3870 7580 3871 7584
3870 7588 3876 7599 3881 7590 3882 7590
3884 7593 3886 7592 3886 7593 3909 7581
3893 7548 3864 7571
TIME...MOT...LOC 0212Z 210DEG 59KT 3897 7562
$$
CMSThe office that day
Everything else NWS Philadelphia/Mount Holly issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Apr 20, 4:30 AM EDT | Special Weather Statement | PHI | Caroline, Kent, Queen Anne's, Talbot | 30 min |
| Apr 20, 5:46 AM EDT | Areal Flood Advisory | PHI | Cecil, Kent, Queen Anne's, Talbot | 4 hr |
| Apr 19, 9:53 PM EDT | Special Weather Statement | PHI | Sussex | 37 min |
| Apr 19, 10:13 PM EDT | Special Weather Statement | PHI | Kent | 32 min |
| Apr 19, 11:04 PM EDT | Special Weather Statement | PHI | Sussex | 26 min |
| Apr 19, 11:12 PM EDT | Coastal Flood Statement | PHI | Sussex | 43 hr |
| Apr 19, 11:35 PM EDT | Areal Flood Advisory | PHI | Sussex | 2 hr |
| Apr 20, 1:16 AM EDT | Special Weather Statement | PHI | Kent, New Castle | 29 min |
| Apr 20, 4:17 AM EDT | Special Weather Statement | PHI | Kent, Sussex | 28 min |
| Apr 20, 5:26 AM EDT | Areal Flood Advisory | PHI | New Castle | 4 hr |
| Apr 20, 6:28 AM EDT | Areal Flood Advisory | PHI | Kent, Sussex | 4 hr |
Nearby
Severe Thunderstorm Warnings in Maryland, 2019Severe Thunderstorm Warnings in Delaware, 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.