Alert archive / Delaware / Severe Thunderstorm Warnings in 2016
Severe Thunderstorm Warning 149, NWS Philadelphia/Mount Holly
NWS Philadelphia/Mount Holly issued this severe thunderstorm warning at Jul 28, 2016, 1:20 PM EDT for Kent County, Sussex County, Delaware; Caroline County, Maryland. It was in force for 40 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
- Jul 28, 2016, 1:20 PM EDT (17:20 UTC)
- Expired
- Jul 28, 2016, 2:00 PM EDT
- In force
- 40 min
- Issued by
- NWS Philadelphia/Mount Holly
- Area
- Storm-based polygon
- Hail
- 0.75 in
- Wind
- 60.0 mph
Counties Kent County, DE, Sussex County, DE, Caroline County, MD
The radar
The Dover AFB radar (KDOX), 4 km from the middle of the area, began a volume at 17:24 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
Wallops Is Stn, VA (KWAL), launched 12:00Z, 5.3 hours before the alert went out and 103 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
- 1169 J/kg
- Mixed-layer CIN
- -50 J/kg
- Mixed-layer LCL
- 1097 m above ground
- 0-6 km bulk shear
- 31 kt
- 0-1 km storm-relative helicity
- 24 m²/s²
- 0-3 km storm-relative helicity
- 90 m²/s²
- Significant tornado parameter
- 0.2
- Supercell composite
- 3.0
The text
As transmitted.
623
WUUS51 KPHI 281720
SVRPHI
DEC001-005-MDC011-281800-
/O.NEW.KPHI.SV.W.0149.160728T1720Z-160728T1800Z/
BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE MOUNT HOLLY NJ
120 PM EDT THU JUL 28 2016
THE NATIONAL WEATHER SERVICE IN MOUNT HOLLY NJ HAS ISSUED A
* SEVERE THUNDERSTORM WARNING FOR...
SOUTHERN KENT COUNTY IN CENTRAL DELAWARE...
SUSSEX COUNTY IN SOUTHERN DELAWARE...
SOUTHEASTERN CAROLINE COUNTY IN EASTERN MARYLAND...
* UNTIL 200 PM EDT
* AT 120 PM EDT...A SEVERE THUNDERSTORM WAS LOCATED OVER
ANDREWSVILLE... OR 16 MILES NORTHWEST OF GEORGETOWN...MOVING
NORTHEAST AT 45 MPH.
HAZARD...60 MPH WIND GUSTS.
SOURCE...RADAR INDICATED.
IMPACT...EXPECT DAMAGE TO ROOFS...SIDING...AND TREES.
* LOCATIONS IMPACTED INCLUDE...
GEORGETOWN...MILFORD...SEAFORD...DENTON...MILLSBORO...LAUREL...
HARRINGTON...LEWES...FEDERALSBURG...MILTON...BRIDGEVILLE...
GREENSBORO...RIDGELY...DAGSBORO...MILLVILLE...ELLENDALE...BOWERS...
QUEEN ANNE...VIOLA AND HENLOPEN ACRES.
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 3846 7569 3864 7571 3869 7577 3868 7580
3871 7584 3870 7588 3882 7590 3892 7595
3918 7520 3918 7513 3917 7513 3916 7515
3917 7521 3910 7537 3905 7537 3892 7528
3881 7514 3881 7506 3846 7504
TIME...MOT...LOC 1720Z 243DEG 41KT 3882 7564
HAIL...<.75IN
WIND...60MPH
$$
JJM2 follow-up statements
990
WWUS51 KPHI 281731
SVSPHI
SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE MOUNT HOLLY NJ
131 PM EDT THU JUL 28 2016
DEC001-005-MDC011-281800-
/O.CON.KPHI.SV.W.0149.000000T0000Z-160728T1800Z/
KENT DE-SUSSEX DE-CAROLINE MD-
131 PM EDT THU JUL 28 2016
...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 200 PM EDT
FOR SOUTHERN KENT...SUSSEX AND SOUTHEASTERN CAROLINE COUNTIES...
AT 129 PM EDT...SEVERAL SEVERE THUNDERSTORMS WERE LOCATED OVER
CENTRAL CAROLINE COUNTY IN MARYLAND AND CENTRAL AND SOUTHERN SUSSEX
COUNTY IN DELAWARE. THESE THUNDERSTORMS WERE MOVING GENERALLY TO
THE NORTHEAST AT 40 MPH.
HAZARD...60 MPH WIND GUSTS.
SOURCE...RADAR INDICATED.
IMPACT...EXPECT DAMAGE TO ROOFS...SIDING...AND TREES IN THE
VICINITY OF THE STRONGEST WINDS.
LOCATIONS IMPACTED INCLUDE...
GEORGETOWN...MILFORD...SEAFORD...DENTON...MILLSBORO...LAUREL...
HARRINGTON...LEWES...FEDERALSBURG...MILTON...BRIDGEVILLE...RIDGELY...
DAGSBORO...MILLVILLE...ELLENDALE...BOWERS...QUEEN ANNE...
HENLOPEN ACRES...HARMONY AND ANDREWSVILLE.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
FOR YOUR PROTECTION MOVE TO AN INTERIOR ROOM ON THE LOWEST FLOOR OF A
BUILDING.
TORRENTIAL RAINFALL IS OCCURRING WITH THIS STORM...AND MAY LEAD TO
FLASH FLOODING. DO NOT DRIVE YOUR VEHICLE THROUGH FLOODED ROADWAYS.
&&
LAT...LON 3864 7571 3869 7577 3868 7580 3870 7580
3871 7584 3870 7588 3882 7590 3892 7595
3910 7537 3905 7537 3892 7528 3881 7514
3881 7506 3846 7504 3846 7569
TIME...MOT...LOC 1729Z 243DEG 41KT 3887 7552
HAIL...<.75IN
WIND...60MPH
$$
JJM122
WWUS51 KPHI 281747
SVSPHI
SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE MOUNT HOLLY NJ
147 PM EDT THU JUL 28 2016
DEC001-MDC011-281755-
/O.CAN.KPHI.SV.W.0149.000000T0000Z-160728T1800Z/
KENT DE-CAROLINE MD-
147 PM EDT THU JUL 28 2016
...THE SEVERE THUNDERSTORM WARNING FOR SOUTHERN KENT AND SOUTHEASTERN
CAROLINE COUNTIES IS CANCELLED...
THE SEVERE THUNDERSTORM WHICH PROMPTED THE WARNING HAS MOVED OUT OF
THE WARNED AREA. THEREFORE THE WARNING HAS BEEN CANCELLED.
A SEVERE THUNDERSTORM WATCH REMAINS IN EFFECT UNTIL MIDNIGHT EDT FOR
SOUTHERN AND CENTRAL DELAWARE...AND EASTERN MARYLAND.
LAT...LON 3846 7555 3878 7572 3884 7558 3884 7555
3886 7552 3895 7532 3881 7514 3881 7506
3846 7504
TIME...MOT...LOC 1745Z 243DEG 41KT 3895 7531
$$
DEC005-281800-
/O.CON.KPHI.SV.W.0149.000000T0000Z-160728T1800Z/
SUSSEX DE-
147 PM EDT THU JUL 28 2016
...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 200 PM EDT
FOR SUSSEX COUNTY...
AT 145 PM EDT...SEVERAL SEVERE THUNDERSTORM WERE LOCATED OVER
SUSSEXCOUNTY DELAWARE...MOVING EAST AT 35 MPH. ONE SUCH THUNDERSTORM
WAS LOCATED NEAR GEORGETOWN.
HAZARD...60 MPH WIND GUSTS.
SOURCE...RADAR INDICATED.
IMPACT...EXPECT DAMAGE TO ROOFS...SIDING...AND TREES.
LOCATIONS IMPACTED INCLUDE...
GEORGETOWN...MILFORD...SEAFORD...MILLSBORO...LAUREL...LEWES...
MILTON...BRIDGEVILLE...DAGSBORO...MILLVILLE...ELLENDALE...
HENLOPEN ACRES...SYCAMORE...GUMBORO...CAPE HENLOPEN STATE PARK...
LONG NECK...OCEAN VIEW...BLADES...GREENWOOD AND FRANKFORD.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
FOR YOUR PROTECTION MOVE TO AN INTERIOR ROOM ON THE LOWEST FLOOR OF A
BUILDING.
FREQUENT CLOUD TO GROUND LIGHTNING IS OCCURRING WITH THESE
STORMS...AND THE STORM WILL AFFECT THE BEACHES. FOR YOUR
SAFETY...IMMEDIATELY MOVE OFF THE BEACH AND SEEK SHELTER INDOORS.
TORRENTIAL RAINFALL IS OCCURRING WITH THIS STORM...AND MAY LEAD TO
FLASH FLOODING. DO NOT DRIVE YOUR VEHICLE THROUGH FLOODED ROADWAYS.
&&
LAT...LON 3846 7555 3878 7572 3884 7558 3884 7555
3886 7552 3895 7532 3881 7514 3881 7506
3846 7504
TIME...MOT...LOC 1745Z 243DEG 41KT 3895 7531
HAIL...<.75IN
WIND...60MPH
$$
JJMThe office that day
Everything else NWS Philadelphia/Mount Holly issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jul 28, 1:24 PM EDT | Severe Thunderstorm Warning | PHI | New Castle | 51 min |
| Jul 28, 1:42 PM EDT | Special Weather Statement | PHI | New Castle | 33 min |
| Jul 28, 1:58 PM EDT | Special Weather Statement | PHI | Sussex | 62 min |
| Jul 28, 2:30 PM EDT | Severe Thunderstorm Warning | PHI | Kent | 47 min |
| Jul 28, 2:36 PM EDT | Areal Flood Advisory | PHI | New Castle | 4 hr |
| Jul 28, 2:44 PM EDT | Areal Flood Advisory | PHI | Kent | 4 hr |
| Jul 28, 3:54 PM EDT | Areal Flood Advisory | PHI | New Castle | 4 hr |
| Jul 28, 4:38 PM EDT | Special Weather Statement | PHI | Kent | 52 min |
| Jul 28, 4:52 PM EDT | Severe Thunderstorm Warning | PHI | Kent | 38 min |
| Jul 28, 4:56 PM EDT | Areal Flood Advisory | PHI | Kent, New Castle | 4 hr |
| Jul 28, 5:24 PM EDT | Severe Thunderstorm Warning | PHI | Kent, Sussex | 51 min |
| Jul 28, 6:12 PM EDT | Special Weather Statement | PHI | Kent | 48 min |
| Jul 28, 6:15 PM EDT | Areal Flood Advisory | PHI | Kent, Sussex | 4 hr |
| Jul 28, 6:25 PM EDT | Severe Thunderstorm Warning | PHI | Kent, Sussex | 65 min |
| Jul 28, 6:53 PM EDT | Areal Flood Advisory | PHI | Sussex | 4 hr |
| Jul 28, 7:22 PM EDT | Special Weather Statement | PHI | Sussex | 38 min |
| Jul 28, 12:52 PM EDT | Tornado Warning | PHI | Caroline, Talbot | 23 min |
| Jul 28, 3:52 PM EDT | Special Weather Statement | PHI | Kent | 38 min |
| Jul 28, 4:31 PM EDT | Severe Thunderstorm Warning | PHI | Caroline, Kent, Queen Anne's | 44 min |
| Jul 28, 5:14 PM EDT | Severe Thunderstorm Warning | PHI | Caroline, Kent, Queen Anne's, Talbot | 46 min |
| Jul 28, 5:56 PM EDT | Severe Thunderstorm Warning | PHI | Caroline, Queen Anne's, Talbot | 49 min |
Nearby
Severe Thunderstorm Warnings in Delaware, 2016Severe Thunderstorm Warnings in Maryland, 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.