Alert archive / Maryland / Severe Thunderstorm Warnings in 2017
Severe Thunderstorm Warning 22, NWS Philadelphia/Mount Holly
NWS Philadelphia/Mount Holly issued this severe thunderstorm warning at Apr 6, 2017, 12:17 PM EDT for Kent County, New Castle County, Delaware; 4 counties in Maryland. It was in force for 24 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
- Apr 6, 2017, 12:17 PM EDT (16:17 UTC)
- Expired
- Apr 6, 2017, 12:41 PM EDT
- In force
- 24 min
- Issued by
- NWS Philadelphia/Mount Holly
- Area
- Storm-based polygon
- Hail
- 0.88 in
- Wind
- 60.0 mph
Counties Kent County, DE, New Castle County, DE, Caroline County, MD, Kent County, MD, Queen Anne's County, MD, Talbot County, MD
The nearest sounding before it
Wallops Is Stn, VA (KWAL), launched 12:00Z, 4.3 hours before the alert went out and 124 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
- 61 J/kg
- Mixed-layer CIN
- -145 J/kg
- Mixed-layer LCL
- 1205 m above ground
- 0-6 km bulk shear
- 46 kt
- 0-1 km storm-relative helicity
- -23 m²/s²
- 0-3 km storm-relative helicity
- 70 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted.
380 WUUS51 KPHI 061617 SVRPHI DEC001-003-MDC011-029-035-041-061700- /O.NEW.KPHI.SV.W.0022.170406T1617Z-170406T1700Z/ BULLETIN - IMMEDIATE BROADCAST REQUESTED Severe Thunderstorm Warning National Weather Service Mount Holly NJ 1217 PM EDT THU APR 6 2017 The National Weather Service in Mount Holly NJ has issued a * Severe Thunderstorm Warning for... Southwestern New Castle County in northern Delaware... Kent County in central Delaware... Northeastern Talbot County in eastern Maryland... Eastern Queen Anne's County in northeastern Maryland... Caroline County in eastern Maryland... East central Kent County in northeastern Maryland... * Until 100 PM EDT * At 1216 PM EDT, a severe thunderstorm was located near Griffin, or 11 miles northeast of Easton, moving northeast at 65 mph. HAZARD...60 mph wind gusts and nickel size hail. SOURCE...Radar indicated. IMPACT...Expect damage to roofs, siding, and trees. * This severe thunderstorm will be near, Denton and Jumptown around 1220 PM EDT. Greensboro, Oakland and Ridgely around 1225 PM EDT. Goldsboro and Sandtown around 1230 PM EDT. Woodside, Viola, Hartly and Hazlettville around 1235 PM EDT. Dover, Camden, Cheswold and Dover Speedway around 1240 PM EDT. Smyrna, Clayton and Green Spring around 1245 PM EDT. Other locations impacted by this severe thunderstorm include Kenton, Leipsic, Chambersville, Rodney Village, Wyoming, Kent Acres, Odessa, Templeville, Townsend and Highland Acres. PRECAUTIONARY/PREPAREDNESS ACTIONS... For your protection move to an interior room on the lowest floor of a building. In addition to 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 3879 7602 3950 7567 3923 7538 3871 7581 TIME...MOT...LOC 1616Z 206DEG 62KT 3884 7587 HAIL...0.88IN WIND...60MPH $$ 33
1 follow-up statement
904
WWUS51 KPHI 061641
SVSPHI
Severe Weather Statement
National Weather Service Mount Holly NJ
1241 PM EDT THU APR 6 2017
DEC001-003-MDC011-029-035-041-061651-
/O.CAN.KPHI.SV.W.0022.000000T0000Z-170406T1700Z/
New Castle DE-Kent DE-Talbot MD-Queen Anne's MD-Caroline MD-Kent MD-
1241 PM EDT THU APR 6 2017
...THE SEVERE THUNDERSTORM WARNING FOR SOUTHWESTERN NEW CASTLE...
KENT...NORTHEASTERN TALBOT...EASTERN QUEEN ANNE'S...CAROLINE AND EAST
CENTRAL KENT COUNTIES IS CANCELLED...
The storm which prompted the warning has weakened below severe
limits, and no longer pose an immediate threat to life or property.
Therefore the warning has been cancelled. However gusty winds are
still possible with this thunderstorm.
LAT...LON 3879 7602 3950 7567 3923 7538 3871 7581
TIME...MOT...LOC 1638Z 206DEG 62KT 3924 7562
$$
33The office that day
Everything else NWS Philadelphia/Mount Holly issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Apr 6, 1:00 PM EDT | Special Weather Statement | PHI | Kent, Sussex | 60 min |
| Apr 6, 1:08 PM EDT | Severe Thunderstorm Warning | PHI | Kent, New Castle, Sussex | 40 min |
| Apr 6, 2:07 PM EDT | Special Weather Statement | PHI | Kent, Sussex | 53 min |
| Apr 6, 2:56 PM EDT | Special Weather Statement | PHI | Kent, New Castle | 64 min |
| Apr 6, 11:58 AM EDT | Areal Flood Advisory | PHI | Cecil, Kent | 4 hr |
| Apr 6, 11:59 AM EDT | Special Weather Statement | PHI | Caroline | 31 min |
| Apr 6, 2:13 PM EDT | Special Weather Statement | PHI | Kent, Queen Anne's, Talbot | 47 min |
| Apr 6, 4:02 PM EDT | Areal Flood Advisory | PHI | Cecil, Kent | 6 hr |
| Apr 6, 4:41 PM EDT | Special Weather Statement | PHI | Talbot | 34 min |
Nearby
Severe Thunderstorm Warnings in Maryland, 2017Severe Thunderstorm Warnings in Delaware, 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; the sounding from the Mesonet's radiosonde archive.