Alert archive / Maryland / Severe Thunderstorm Warnings in 2019
Severe Thunderstorm Warning 372, NWS Philadelphia/Mount Holly
NWS Philadelphia/Mount Holly issued this severe thunderstorm warning at Aug 19, 2019, 6:42 PM EDT for Caroline County, Talbot 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
- Aug 19, 2019, 6:42 PM EDT (22:42 UTC)
- Expired
- Aug 19, 2019, 7:33 PM EDT
- In force
- 51 min
- Issued by
- NWS Philadelphia/Mount Holly
- Area
- Storm-based polygon
- Hail
- 1.0 in
- Wind
- 60.0 mph
Counties Caroline County, MD, Talbot County, MD
The radar
The Dover AFB radar (KDOX), 54 km from the middle of the area, began a volume at 22:45 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 19, 6:55 PM EDT | HAIL 0.5 | Trappe, MD |
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 12:00Z, 10.7 hours before the alert went out and 96 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
- 1552 J/kg
- Mixed-layer CIN
- -43 J/kg
- Mixed-layer LCL
- 1081 m above ground
- 0-6 km bulk shear
- 17 kt
- 0-1 km storm-relative helicity
- 54 m²/s²
- 0-3 km storm-relative helicity
- 48 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted.
156
WUUS51 KPHI 192242
SVRPHI
MDC011-041-192345-
/O.NEW.KPHI.SV.W.0372.190819T2242Z-190819T2345Z/
BULLETIN - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Warning
National Weather Service Mount Holly NJ
642 PM EDT Mon Aug 19 2019
The National Weather Service in Mount Holly NJ has issued a
* Severe Thunderstorm Warning for...
Southeastern Talbot County in eastern Maryland...
Southwestern Caroline County in eastern Maryland...
* Until 745 PM EDT.
* At 642 PM EDT, a severe thunderstorm was located over Trappe, or
near Cambridge, and is nearly stationary.
HAZARD...60 mph wind gusts and quarter size hail.
SOURCE...Radar indicated.
IMPACT...Minor damage to vehicles is possible. Wind damage to
roofs, siding, trees, and power lines is possible.
* Locations impacted include...
Trappe, Preston, Hambleton, Choptank and Windyhill.
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 3859 7606 3860 7606 3861 7608 3863 7608
3862 7612 3864 7613 3871 7611 3873 7584
3870 7584 3870 7590 3866 7596 3860 7599
3857 7602
TIME...MOT...LOC 2242Z 279DEG 4KT 3865 7605
HAIL...1.00IN
WIND...60MPH
$$
Staarmann2 follow-up statements
287
WWUS51 KPHI 192323
SVSPHI
Severe Weather Statement
National Weather Service Mount Holly NJ
723 PM EDT Mon Aug 19 2019
MDC011-192333-
/O.CAN.KPHI.SV.W.0372.000000T0000Z-190819T2345Z/
Caroline MD-
723 PM EDT Mon Aug 19 2019
...THE SEVERE THUNDERSTORM WARNING FOR SOUTHWESTERN CAROLINE COUNTY
IS CANCELLED...
The severe thunderstorm which prompted the warning has moved out of
the warned area. Therefore, the warning has been cancelled.
LAT...LON 3864 7613 3868 7596 3866 7595 3866 7596
3860 7599 3857 7602 3859 7606 3860 7606
3861 7608 3863 7608 3862 7612
TIME...MOT...LOC 2323Z 288DEG 1KT 3863 7602
$$
MDC041-192345-
/O.CON.KPHI.SV.W.0372.000000T0000Z-190819T2345Z/
Talbot MD-
723 PM EDT Mon Aug 19 2019
...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 745 PM EDT
FOR SOUTHEASTERN TALBOT COUNTY...
At 723 PM EDT, a severe thunderstorm was located over Trappe, or near
Cambridge, and is nearly stationary.
HAZARD...60 mph wind gusts and quarter size hail.
SOURCE...Radar indicated.
IMPACT...Minor damage to vehicles is possible. Wind damage to roofs,
siding, trees, and power lines is possible.
Locations impacted include...
Trappe.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
For your protection move to an interior room on the lowest floor of a
building.
Torrential rainfall is occurring with this storm, and may lead to
flash flooding. Do not drive your vehicle through flooded roadways.
&&
LAT...LON 3864 7613 3868 7596 3866 7595 3866 7596
3860 7599 3857 7602 3859 7606 3860 7606
3861 7608 3863 7608 3862 7612
TIME...MOT...LOC 2323Z 288DEG 1KT 3863 7602
HAIL...1.00IN
WIND...60MPH
$$
Staarmann931
WWUS51 KPHI 192333
SVSPHI
Severe Weather Statement
National Weather Service Mount Holly NJ
733 PM EDT Mon Aug 19 2019
MDC041-192343-
/O.CAN.KPHI.SV.W.0372.000000T0000Z-190819T2345Z/
Talbot MD-
733 PM EDT Mon Aug 19 2019
...THE SEVERE THUNDERSTORM WARNING FOR SOUTHEASTERN TALBOT COUNTY IS
CANCELLED...
The storm which prompted the warning has weakened below severe
limits, and no longer poses an immediate threat to life or property.
Therefore, the warning has been cancelled. However small hail, gusty
winds, and heavy rain are still possible with this thunderstorm.
LAT...LON 3864 7613 3868 7596 3866 7595 3866 7596
3860 7599 3857 7602 3859 7606 3860 7606
3861 7608 3863 7608 3862 7612
TIME...MOT...LOC 2331Z 279DEG 4KT 3863 7601
$$
StaarmannThe office that day
Everything else NWS Philadelphia/Mount Holly issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Aug 19, 4:46 PM EDT | Severe Thunderstorm Warning | PHI | Caroline | 46 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.