Alert archive / Maryland / Severe Thunderstorm Warnings in 2017
Severe Thunderstorm Warning 24, NWS Philadelphia/Mount Holly
NWS Philadelphia/Mount Holly issued this severe thunderstorm warning at Apr 21, 2017, 8:17 PM EDT for Caroline County, Queen Anne's County, Talbot County, Maryland. It was in force for 43 min. 2 reports 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 21, 2017, 8:17 PM EDT (00:17 UTC)
- Expired
- Apr 21, 2017, 9:00 PM EDT
- In force
- 43 min
- Issued by
- NWS Philadelphia/Mount Holly
- Area
- Storm-based polygon
- Hail
- 1.0 in
- Wind
- 60.0 mph
Counties Caroline County, MD, Queen Anne's County, MD, Talbot County, MD
The radar
The Dover AFB radar (KDOX), 66 km from the middle of the area, began a volume at 00:17 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 21, 8:30 PM EDT | TSTM WND DMG | North Bend Woodland, MD | 3 TREES BLOWN DOWN IN A RELAIVELY SMALL AREA. |
| Apr 21, 8:30 PM EDT | HAIL 0.75 | 3 N Easton, MD | HAIL UP TO DIME SIZE JUST NORTH OF EASTON. |
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 00:00Z, 0.3 hours before the alert went out and 106 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
- 270 J/kg
- Mixed-layer CIN
- -39 J/kg
- Mixed-layer LCL
- 1665 m above ground
- 0-6 km bulk shear
- 50 kt
- 0-1 km storm-relative helicity
- -5 m²/s²
- 0-3 km storm-relative helicity
- 109 m²/s²
- Significant tornado parameter
- -0.0
- Supercell composite
- -0.0
The text
As transmitted.
832
WUUS51 KPHI 220017
SVRPHI
MDC011-035-041-220100-
/O.NEW.KPHI.SV.W.0024.170422T0017Z-170422T0100Z/
BULLETIN - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Warning
National Weather Service Mount Holly NJ
817 PM EDT FRI APR 21 2017
The National Weather Service in Mount Holly NJ has issued a
* Severe Thunderstorm Warning for...
Talbot County in eastern Maryland...
Southeastern Queen Anne's County in northeastern Maryland...
Central Caroline County in eastern Maryland...
* Until 900 PM EDT
* At 817 PM EDT, a severe thunderstorm was located over St. Michaels,
or 9 miles west of Easton, moving east at 35 mph.
HAZARD...60 mph wind gusts and quarter size hail.
SOURCE...Radar indicated.
IMPACT...Hail damage to vehicles is expected. Expect wind damage
to roofs, siding, and trees.
* Locations impacted include...
Easton, Talbot, Denton, Greensboro, Oakland, Ridgely, St. Michaels,
Oxford, Queen Anne, Tanyard, Harmony, Starr, Skipton, Copperville,
Jumptown, Matthews, Wye Mills, Griffin, Cordova and Hope.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
For your protection move to an interior room on the lowest floor of a
building.
&&
LAT...LON 3877 7633 3886 7626 3883 7625 3879 7620
3879 7619 3893 7620 3912 7587 3878 7572
3868 7617 3869 7619 3867 7620 3871 7621
3871 7624 3876 7622 3872 7628 3871 7627
3872 7630 3878 7629 3873 7632
TIME...MOT...LOC 0017Z 251DEG 28KT 3877 7624
HAIL...1.00IN
WIND...60MPH
$$
po1 follow-up statement
874
WWUS51 KPHI 220038
SVSPHI
Severe Weather Statement
National Weather Service Mount Holly NJ
838 PM EDT FRI APR 21 2017
MDC011-035-041-220100-
/O.CON.KPHI.SV.W.0024.000000T0000Z-170422T0100Z/
Talbot MD-Queen Anne's MD-Caroline MD-
838 PM EDT FRI APR 21 2017
...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 900 PM EDT
FOR NORTHEASTERN TALBOT...SOUTHEASTERN QUEEN ANNE'S AND CENTRAL
CAROLINE COUNTIES...
At 838 PM EDT, a severe thunderstorm was located near Easton, moving
east at 35 mph.
HAZARD...60 mph wind gusts and quarter size hail.
SOURCE...Radar indicated.
IMPACT...Hail damage to vehicles is expected. Expect wind damage to
roofs, siding, and trees.
Locations impacted include...
Easton, Denton, Greensboro, Oakland, Ridgely, Queen Anne, Tanyard,
Harmony, Starr, Skipton, Copperville, Jumptown, Matthews, Wye Mills,
Griffin, Cordova and Hillsboro.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
For your protection move to an interior room on the lowest floor of a
building.
&&
LAT...LON 3892 7620 3908 7585 3886 7576 3878 7573
3874 7588 3870 7614 3879 7619
TIME...MOT...LOC 0038Z 256DEG 29KT 3881 7603
HAIL...1.00IN
WIND...60MPH
$$
POThe office that day
Everything else NWS Philadelphia/Mount Holly issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Apr 21, 9:00 PM EDT | Special Weather Statement | PHI | Caroline | 60 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.