Alert archive / Delaware / Severe Thunderstorm Warnings in 2004
Severe Thunderstorm Warning 202, NWS Philadelphia/Mount Holly
NWS Philadelphia/Mount Holly issued this severe thunderstorm warning at Sep 28, 2004, 4:01 PM EDT for New Castle County, Delaware. It was in force for 44 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
- Sep 28, 2004, 4:01 PM EDT (20:01 UTC)
- Expired
- Sep 28, 2004, 4:45 PM EDT
- In force
- 44 min
- Issued by
- NWS Philadelphia/Mount Holly
- Area
- Counties, with a storm outline in the text
County New Castle County, DE
The watch it was issued in
The SPC watch in force over the same counties when this warning went out.
| Issued | Product | Office | Lasted |
|---|---|---|---|
| Sep 28, 2:25 PM EDT | Tornado Watch | SPC | 7 hr |
The nearest sounding before it
Phillips Aaf/Abe, MD (KAPG), launched 12:00Z, 8.0 hours before the alert went out and 46 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
- 95 J/kg
- Mixed-layer CIN
- -78 J/kg
- Mixed-layer LCL
- 631 m above ground
- 0-6 km bulk shear
- 41 kt
- 0-1 km storm-relative helicity
- 109 m²/s²
- 0-3 km storm-relative helicity
- 172 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.4
The text
As transmitted, in the capitals the NWS used until 2016.
000
WUUS51 KPHI 282001
SVRPHI
DEC003-282045-
/X.NEW.KPHI.SV.W.0006.040928T2001Z-040928T2045Z/
BULLETIN - EAS ACTIVATION REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE MOUNT HOLLY NJ
401 PM EDT TUE SEP 28 2004
THE NATIONAL WEATHER SERVICE IN MOUNT HOLLY NJ HAS ISSUED A
* SEVERE THUNDERSTORM WARNING FOR...
NORTHERN NEW CASTLE COUNTY IN NORTHERN DELAWARE
THIS INCLUDES THE CITIES OF...WILMINGTON...NEWARK
* UNTIL 445 PM EDT
* AT 357 PM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
SEVERE THUNDERSTORM. THIS STORM WAS LOCATED NEAR DELAWARE CITY...
OR ABOUT 10 MILES SOUTHEAST OF NEWARK...AND MOVING NORTH AT 25 MPH.
DANGEROUS FLASH FLOODING IS ALSO OCCURRING WITH THIS STORM.
TREES CAN BE DOWNED BY THE HEAVY RAIN ALONE.
* THE SEVERE THUNDERSTORM WILL BE NEAR...
NEW CASTLE AND 7 MILES EAST OF NEWARK BY 415 PM EDT
WILMINGTON MANOR BY 420 PM EDT
NEWPORT AND STANTON BY 425 PM EDT
ELSMERE AND WILMINGTON BY 430 PM EDT
6 MILES WEST OF BELLEFONTE BY 435 PM EDT
TALLEYVILLE BY 440 PM EDT
DOPPLER RADAR HAS INDICATED SOME WEAK ROTATION WITHIN THIS STORM.
WHILE NOT IMMEDIATELY LIKELY...A TORNADO MAY STILL DEVELOP. IF A
TORNADO IS SPOTTED...ACT QUICKLY AND MOVE TO A PLACE OF SAFETY IN A
STURDY STRUCTURE...SUCH AS A BASEMENT OR SMALL INTERIOR ROOM.
LAT...LON 3978 7574 3984 7564 3983 7550 3972 7551
3966 7555 3966 7557 3962 7561 3959 7560
3960 7556 3949 7558 3949 7577 3968 7578
$$
TFGThe office that day
Everything else NWS Philadelphia/Mount Holly issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Sep 28, 2:12 PM EDT | Severe Thunderstorm Warning | PHI | New Castle | 63 min |
| Sep 28, 2:36 PM EDT | Flash Flood Warning | PHI | Kent, New Castle | 3 hr |
| Sep 28, 3:14 PM EDT | Severe Thunderstorm Warning | PHI | New Castle | 46 min |
| Sep 28, 4:11 PM EDT | Tornado Warning | PHI | New Castle | 34 min |
| Sep 28, 4:41 PM EDT | Severe Thunderstorm Warning | PHI | New Castle | 79 min |
| Sep 28, 5:30 PM EDT | Flash Flood Warning | PHI | Kent, New Castle, Sussex | 3 hr |
Nearby
Severe Thunderstorm Warnings in Delaware, 2004Every severe thunderstorm warning in 2004
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.