Alert archive / Delaware / Severe Thunderstorm Warnings in 2012
Severe Thunderstorm Warning 175, NWS Philadelphia/Mount Holly
NWS Philadelphia/Mount Holly issued this severe thunderstorm warning at Aug 9, 2012, 1:04 PM EDT for Kent County, Delaware. It was in force for 23 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 9, 2012, 1:04 PM EDT (17:04 UTC)
- Expired
- Aug 9, 2012, 1:27 PM EDT
- In force
- 23 min
- Issued by
- NWS Philadelphia/Mount Holly
- Area
- Storm-based polygon
County Kent County, DE
The radar
The Dover AFB radar (KDOX), 23 km from the middle of the area, began a volume at 17:07 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
Phillips Aaf/Abe, MD (KAPG), launched 12:00Z, 5.1 hours before the alert went out and 69 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
- 1906 J/kg
- Mixed-layer CIN
- -18 J/kg
- Mixed-layer LCL
- 754 m above ground
- 0-6 km bulk shear
- 10 kt
- 0-1 km storm-relative helicity
- 46 m²/s²
- 0-3 km storm-relative helicity
- 37 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted, in the capitals the NWS used until 2016.
220
WUUS51 KPHI 091704
SVRPHI
DEC001-091800-
/O.NEW.KPHI.SV.W.0175.120809T1704Z-120809T1800Z/
BULLETIN - EAS ACTIVATION REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE MOUNT HOLLY NJ
104 PM EDT THU AUG 9 2012
THE NATIONAL WEATHER SERVICE IN MOUNT HOLLY NJ HAS ISSUED A
* SEVERE THUNDERSTORM WARNING FOR...
SOUTHERN KENT COUNTY IN CENTRAL DELAWARE...
* UNTIL 200 PM EDT
* AT 103 PM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
SEVERE THUNDERSTORM CAPABLE OF PRODUCING QUARTER SIZE HAIL...AND
DAMAGING WINDS IN EXCESS OF 60 MPH. THIS STORM WAS LOCATED NEAR
HARRINGTON...OR 15 MILES SOUTHWEST OF DOVER...AND MOVING EAST AT 5
MPH.
* THE SEVERE THUNDERSTORM WILL BE NEAR...
HARRINGTON AND VIOLA AROUND 145 PM EDT...
7 MILES SOUTH OF WOODSIDE AROUND 150 PM EDT...
PRECAUTIONARY/PREPAREDNESS ACTIONS...
THIS IS A DANGEROUS STORM. IF YOU ARE IN ITS PATH...PREPARE
IMMEDIATELY FOR DAMAGING WINDS...LARGE HAIL...AND DEADLY CLOUD TO
GROUND LIGHTNING. PEOPLE OUTSIDE SHOULD MOVE TO A SHELTER...
PREFERABLY INSIDE A STRONG BUILDING BUT AWAY FROM WINDOWS.
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.
PLEASE REPORT HAIL OR STRONG WINDS TO THE NATIONAL WEATHER SERVICE BY
CALLING TOLL FREE...1-877-633-6772...WHEN YOU CAN DO SO SAFELY.
&&
LAT...LON 3906 7574 3914 7553 3899 7547 3888 7551
3887 7553 3887 7573
TIME...MOT...LOC 1704Z 268DEG 6KT 3897 7565
$$
MEOLA1 follow-up statement
065
WWUS51 KPHI 091727
SVSPHI
SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE MOUNT HOLLY NJ
127 PM EDT THU AUG 9 2012
DEC001-091735-
/O.CAN.KPHI.SV.W.0175.000000T0000Z-120809T1800Z/
KENT DE-
127 PM EDT THU AUG 9 2012
...THE SEVERE THUNDERSTORM WARNING FOR SOUTHERN KENT COUNTY IS
CANCELLED...
THE STORM HAS WEAKENED AS A GUST FRONT HAS EXTENDED A FEW MILES FROM
IT. ANOTHER STORM THOUGH IS INTENSIFYING NEAR RISING SUN AND
MAGNOLIA. IT MAY REQUIRE A SUBSEQUENT WARNING IF THE INTENSIFYING
PROCESS CONTINUES.
PLEASE REPORT HAIL OR STRONG WINDS TO THE NATIONAL WEATHER SERVICE BY
CALLING TOLL FREE...1-877-633-6772...WHEN YOU CAN DO SO SAFELY.
LAT...LON 3906 7574 3914 7553 3899 7547 3888 7551
3887 7553 3887 7573
TIME...MOT...LOC 1725Z 268DEG 6KT 3897 7560
$$
TFGThe office that day
Everything else NWS Philadelphia/Mount Holly issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Aug 9, 12:34 PM EDT | Special Weather Statement | PHI | Kent | 56 min |
| Aug 9, 1:17 PM EDT | Severe Thunderstorm Warning | PHI | Sussex | 43 min |
| Aug 9, 1:39 PM EDT | Special Weather Statement | PHI | Kent | 66 min |
| Aug 9, 1:55 PM EDT | Severe Thunderstorm Warning | PHI | Sussex | 65 min |
| Aug 9, 2:04 PM EDT | Special Weather Statement | PHI | Kent | 56 min |
| Aug 9, 2:19 PM EDT | Severe Thunderstorm Warning | PHI | Sussex | 56 min |
| Aug 9, 2:23 PM EDT | Special Weather Statement | PHI | Sussex | 52 min |
| Aug 9, 3:17 PM EDT | Special Weather Statement | PHI | Sussex | 88 min |
| Aug 9, 3:42 PM EDT | Areal Flood Advisory | PHI | Sussex | 119 min |
Nearby
Severe Thunderstorm Warnings in Delaware, 2012Every severe thunderstorm warning in 2012
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.