Alert archive / Maryland / Severe Thunderstorm Warnings in 2008
Severe Thunderstorm Warning 117, NWS Philadelphia/Mount Holly
NWS Philadelphia/Mount Holly issued this severe thunderstorm warning at Jun 29, 2008, 10:45 PM EDT for Kent County, Sussex County, Delaware; Caroline County, Queen Anne's County, Talbot County, Maryland. It was in force for 75 min. 1 report came from inside the area while it was in force.
The area
The outline as issued, with what was reported inside it.
The facts
- Issued
- Jun 29, 2008, 10:45 PM EDT (02:45 UTC)
- Expired
- Jun 30, 2008, 12:00 AM EDT
- In force
- 75 min
- Issued by
- NWS Philadelphia/Mount Holly
- Area
- Storm-based polygon
Counties Kent County, DE, Sussex County, DE, Caroline County, MD, Queen Anne's County, MD, Talbot County, MD
The radar
The Dover AFB radar (KDOX), 35 km from the middle of the area, began a volume at 02:46 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.
What was reported inside it
| Time | Report | Where | Remark |
|---|---|---|---|
| Jun 29, 11:00 PM EDT | TSTM WND DMG | Preston, MD | TREE AND WIRES DOWN |
Local storm reports filed while the alert was in force, from inside its polygon or its counties.
The watch it was issued in
The SPC watch in force over the same counties when this warning went out.
| Issued | Product | Office | Lasted |
|---|---|---|---|
| Jun 29, 4:37 PM EDT | Severe Thunderstorm Watch | SPC | 9 hr |
The nearest sounding before it
Wallops Is Stn, VA (KWAL), launched 00:00Z, 2.8 hours before the alert went out and 99 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
- 2674 J/kg
- Mixed-layer CIN
- -26 J/kg
- Mixed-layer LCL
- 1191 m above ground
- 0-6 km bulk shear
- 30 kt
- 0-1 km storm-relative helicity
- 117 m²/s²
- 0-3 km storm-relative helicity
- 178 m²/s²
- Significant tornado parameter
- 1.6
- Supercell composite
- 15.4
The text
As transmitted, in the capitals the NWS used until 2016.
000
WUUS51 KPHI 300247
SVRPHI
DEC001-005-MDC011-035-041-300400-
/O.NEW.KPHI.SV.W.0117.080630T0245Z-080630T0400Z/
BULLETIN - EAS ACTIVATION REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE MOUNT HOLLY NJ
1045 PM EDT SUN JUN 29 2008
THE NATIONAL WEATHER SERVICE IN MOUNT HOLLY NJ HAS ISSUED A
* SEVERE THUNDERSTORM WARNING FOR...
KENT COUNTY IN CENTRAL DELAWARE...
CAROLINE COUNTY IN EASTERN MARYLAND...
TALBOT COUNTY IN EASTERN MARYLAND...
SOUTHEASTERN QUEEN ANNES COUNTY IN NORTHEAST MARYLAND...
SUSSEX COUNTY IN SOUTHERN DELAWARE...
* UNTIL MIDNIGHT EDT
* AT 1042 PM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
LINE OF SEVERE THUNDERSTORMS CAPABLE OF PRODUCING DAMAGING WINDS IN
EXCESS OF 60 MPH. THESE STORMS WERE LOCATED ALONG A LINE EXTENDING
FROM OXFORD TO 23 MILES SOUTHWEST OF LAUREL...AND MOVING NORTHEAST
AT 45 MPH.
* SEVERE THUNDERSTORMS WILL BE NEAR...
HAMBLETON AND TRAPPE BY 1050 PM...
EASTON...CHOPTANK...WINDYHILL AND TANYARD BY 1055 PM...
MATTHEWS AND PRESTON BY 1100 PM...
CORDOVA AND HARMONY BY 1105 PM...
A SEVERE THUNDERSTORM WATCH REMAINS IN EFFECT UNTIL MIDNIGHT MONDAY
MORNING FOR DELAWARE AND NORTHEASTERN MARYLAND AND SOUTHERN NEW
JERSEY.
LAT...LON 3846 7570 3864 7572 3869 7582 3867 7595
3857 7602 3866 7621 3873 7625 3867 7636
3879 7638 3876 7637 3887 7625 3882 7621
3890 7621 3931 7553 3917 7539 3892 7530
3882 7519 3879 7507 3845 7505
TIME...MOT...LOC 0245Z 228DEG 41KT 3871 7616 3829 7575
$$
SZATKOWSKIThe office that day
Everything else NWS Philadelphia/Mount Holly issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jun 29, 11:51 PM EDT | Severe Thunderstorm Warning | PHI | Kent, Sussex | 69 min |
Nearby
Severe Thunderstorm Warnings in Maryland, 2008Severe Thunderstorm Warnings in Delaware, 2008Every severe thunderstorm warning in 2008
Sources
The product and its follow-ups from the Iowa Environmental Mesonet's archive of National Weather Service and Storm Prediction Center text; local storm reports from the same archive; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.