Alert archive / Maryland / Severe Thunderstorm Warnings in 2016
Severe Thunderstorm Warning 188, NWS Philadelphia/Mount Holly
NWS Philadelphia/Mount Holly issued this severe thunderstorm warning at Aug 21, 2016, 4:06 PM EDT for Kent County, Delaware; Caroline County, Kent County, Queen Anne's County, Maryland. It was in force for 39 min. No storm report in the archive falls inside the area while it was in force.
The area
The outline as issued.
The facts
- Issued
- Aug 21, 2016, 4:06 PM EDT (20:06 UTC)
- Expired
- Aug 21, 2016, 4:45 PM EDT
- In force
- 39 min
- Issued by
- NWS Philadelphia/Mount Holly
- Area
- Storm-based polygon
- Hail
- 0.75 in
- Wind
- 60.0 mph
Counties Kent County, DE, Caroline County, MD, Kent County, MD, Queen Anne's County, MD
The radar
The Dover AFB radar (KDOX), 57 km from the middle of the area, began a volume at 20:06 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.
The nearest sounding before it
Washington/Dulle, VA (KIAD), launched 12:00Z, 8.1 hours before the alert went out and 137 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
- 310 J/kg
- Mixed-layer CIN
- -37 J/kg
- Mixed-layer LCL
- 719 m above ground
- 0-6 km bulk shear
- 26 kt
- 0-1 km storm-relative helicity
- 54 m²/s²
- 0-3 km storm-relative helicity
- 78 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.5
The text
As transmitted.
152
WUUS51 KPHI 212006
SVRPHI
DEC001-MDC011-029-035-212045-
/O.NEW.KPHI.SV.W.0188.160821T2006Z-160821T2045Z/
BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE MOUNT HOLLY NJ
406 PM EDT SUN AUG 21 2016
THE NATIONAL WEATHER SERVICE IN MOUNT HOLLY NJ HAS ISSUED A
* SEVERE THUNDERSTORM WARNING FOR...
WEST CENTRAL KENT COUNTY IN CENTRAL DELAWARE...
NORTHEASTERN QUEEN ANNE'S COUNTY IN NORTHEASTERN MARYLAND...
NORTHERN CAROLINE COUNTY IN EASTERN MARYLAND...
EAST CENTRAL KENT COUNTY IN NORTHEASTERN MARYLAND...
* UNTIL 445 PM EDT
* AT 405 PM EDT...SEVERE THUNDERSTORMS WERE LOCATED ALONG A LINE
EXTENDING FROM CHURCH HILL TO STARKEY CORNER...MOVING EAST AT 20
MPH.
HAZARD...60 MPH WIND GUSTS.
SOURCE...RADAR INDICATED.
IMPACT...EXPECT DAMAGE TO ROOFS...SIDING...AND TREES.
* SEVERE THUNDERSTORMS WILL BE NEAR...
SUDLERSVILLE AROUND 425 PM EDT.
MILLINGTON AROUND 435 PM EDT.
DELANEY CORNER AROUND 445 PM EDT.
OTHER LOCATIONS IMPACTED BY THESE SEVERE THUNDERSTORMS INCLUDE
MARYDEL...BARCLAY AND TEMPLEVILLE.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
FOR YOUR PROTECTION MOVE TO AN INTERIOR ROOM ON THE LOWEST FLOOR OF A
BUILDING.
IN ADDITION TO 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 THESE STORMS...AND MAY LEAD TO
FLASH FLOODING. DO NOT DRIVE YOUR VEHICLE THROUGH FLOODED ROADWAYS.
&&
LAT...LON 3920 7601 3931 7576 3929 7576 3930 7575
3930 7572 3911 7572 3909 7607
TIME...MOT...LOC 2005Z 248DEG 16KT 3917 7597 3912 7600
HAIL...<.75IN
WIND...60MPH
$$
DRAG1 follow-up statement
276
WWUS51 KPHI 212033
SVSPHI
SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE MOUNT HOLLY NJ
433 PM EDT SUN AUG 21 2016
MDC029-212041-
/O.CAN.KPHI.SV.W.0188.000000T0000Z-160821T2045Z/
KENT MD-
433 PM EDT SUN AUG 21 2016
...THE SEVERE THUNDERSTORM WARNING FOR EAST CENTRAL KENT COUNTY IS
CANCELLED...
THE STORMS WHICH PROMPTED THE WARNING HAVE WEAKENED AND MOVED OUT OF
THE WARNED AREA. THEREFORE THE WARNING HAS BEEN CANCELLED.
LAT...LON 3920 7593 3924 7580 3925 7578 3924 7575
3922 7572 3911 7572 3910 7601
TIME...MOT...LOC 2031Z 293DEG 36KT 3916 7585 3911 7588
$$
DEC001-MDC011-035-212045-
/O.CON.KPHI.SV.W.0188.000000T0000Z-160821T2045Z/
KENT DE-QUEEN ANNE'S MD-CAROLINE MD-
433 PM EDT SUN AUG 21 2016
...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 445 PM EDT
FOR NORTHWESTERN KENT...NORTHEASTERN QUEEN ANNE'S AND NORTHERN
CAROLINE COUNTIES...
AT 431 PM EDT...SEVERE THUNDERSTORMS WERE LOCATED ALONG A LINE
EXTENDING FROM NEAR SUDLERSVILLE TO NEAR CHURCH HILL...MOVING
EAST TO SOUTHEAST AT 30 TO 40 MPH.
HAZARD...60 MPH WIND GUSTS.
SOURCE...RADAR INDICATED.
IMPACT...EXPECT DAMAGE TO ROOFS...SIDING...AND TREES.
THESE SEVERE THUNDERSTORMS WILL REMAIN OVER MAINLY RURAL AREAS OF
NORTHWESTERN KENT...NORTHEASTERN QUEEN ANNE'S AND NORTHERN CAROLINE
COUNTIES...INCLUDING THE FOLLOWING LOCATIONS: MARYDEL...BARCLAY AND
TEMPLEVILLE.
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 THESE STORMS...AND MAY LEAD TO
FLASH FLOODING. DO NOT DRIVE YOUR VEHICLE THROUGH FLOODED ROADWAYS.
&&
LAT...LON 3920 7593 3924 7580 3925 7578 3924 7575
3922 7572 3911 7572 3910 7601
TIME...MOT...LOC 2031Z 293DEG 36KT 3916 7585 3911 7588
HAIL...<.75IN
WIND...60MPH
$$
DRAGThe office that day
Everything else NWS Philadelphia/Mount Holly issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Aug 21, 2:51 PM EDT | Areal Flood Advisory | PHI | New Castle | 114 min |
| Aug 21, 3:30 PM EDT | Areal Flood Advisory | PHI | Kent, New Castle | 2 hr |
| Aug 21, 3:47 PM EDT | Areal Flood Advisory | PHI | New Castle | 118 min |
| Aug 21, 5:06 PM EDT | Severe Thunderstorm Warning | PHI | Kent | 39 min |
| Aug 21, 5:09 PM EDT | Flash Flood Warning | PHI | Kent, Sussex | 4 hr |
| Aug 21, 5:28 PM EDT | Special Weather Statement | PHI | Kent | 17 min |
| Aug 21, 5:46 PM EDT | Special Weather Statement | PHI | Sussex | 14 min |
| Aug 21, 5:54 PM EDT | Special Weather Statement | PHI | Sussex | 36 min |
| Aug 21, 6:31 PM EDT | Special Weather Statement | PHI | Sussex | 29 min |
| Aug 21, 6:35 PM EDT | Areal Flood Advisory | PHI | Kent | 3 hr |
| Aug 21, 7:04 PM EDT | Special Weather Statement | PHI | Sussex | 26 min |
| Aug 21, 2:38 PM EDT | Special Weather Statement | PHI | Cecil | 22 min |
| Aug 21, 2:57 PM EDT | Special Weather Statement | PHI | Kent, Queen Anne's | 33 min |
| Aug 21, 3:40 PM EDT | Special Weather Statement | PHI | Talbot | 50 min |
| Aug 21, 3:50 PM EDT | Special Weather Statement | PHI | Kent | 25 min |
| Aug 21, 4:19 PM EDT | Special Weather Statement | PHI | Talbot | 26 min |
| Aug 21, 4:20 PM EDT | Flash Flood Warning | PHI | Cecil, Kent, Queen Anne's | 4 hr |
| Aug 21, 4:29 PM EDT | Special Weather Statement | PHI | Caroline | 31 min |
| Aug 21, 4:50 PM EDT | Areal Flood Advisory | PHI | Caroline, Queen Anne's, Talbot | 3 hr |
| Aug 21, 4:54 PM EDT | Special Weather Statement | PHI | Caroline | 36 min |
Nearby
Severe Thunderstorm Warnings in Maryland, 2016Severe Thunderstorm Warnings in Delaware, 2016Every severe thunderstorm warning in 2016
Sources
The product and its follow-ups from the Iowa Environmental Mesonet's archive of National Weather Service and Storm Prediction Center text; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.