Alert archive / Maryland / Severe Thunderstorm Warnings in 2008
Severe Thunderstorm Warning 266, NWS Philadelphia/Mount Holly
NWS Philadelphia/Mount Holly issued this severe thunderstorm warning at Sep 30, 2008, 10:39 PM EDT for Kent County, Sussex County, Delaware; Caroline County, Queen Anne's County, Talbot County, Maryland. It was in force for 66 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
- Sep 30, 2008, 10:39 PM EDT (02:39 UTC)
- Expired
- Sep 30, 2008, 11:45 PM EDT
- In force
- 66 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), 39 km from the middle of the area, began a volume at 02:39 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 |
|---|---|---|---|
| Sep 30, 11:22 PM EDT | HAIL 0.75 | Dover, DE |
Local storm reports filed while the alert was in force, from inside its polygon or its counties.
The nearest sounding before it
Wallops Is Stn, VA (KWAL), launched 00:00Z, 2.7 hours before the alert went out and 104 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
- 294 J/kg
- Mixed-layer CIN
- -30 J/kg
- Mixed-layer LCL
- 792 m above ground
- 0-6 km bulk shear
- 39 kt
- 0-1 km storm-relative helicity
- 95 m²/s²
- 0-3 km storm-relative helicity
- 126 m²/s²
- Significant tornado parameter
- 0.1
- Supercell composite
- 1.6
The text
As transmitted, in the capitals the NWS used until 2016.
000
WUUS51 KPHI 010239
SVRPHI
DEC001-005-MDC011-035-041-010345-
/O.NEW.KPHI.SV.W.0266.081001T0239Z-081001T0345Z/
BULLETIN - EAS ACTIVATION REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE MOUNT HOLLY NJ
1039 PM EDT TUE SEP 30 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...
EASTERN TALBOT COUNTY IN EASTERN MARYLAND...
CENTRAL QUEEN ANNES COUNTY IN NORTHEAST MARYLAND...
NORTHWESTERN SUSSEX COUNTY IN SOUTHERN DELAWARE...
* UNTIL 1145 PM EDT
* AT 1032 PM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
SEVERE THUNDERSTORM CAPABLE OF PRODUCING PENNY SIZE HAIL...AND
DAMAGING WINDS IN EXCESS OF 60 MPH. THIS STORM WAS LOCATED NEAR
GOLDSBORO...OR ABOUT 12 MILES EAST OF CENTERVILLE...AND MOVING EAST
AT 26 MPH.
* THE SEVERE THUNDERSTORM WILL BE NEAR...
SANDTOWN BY 1045 PM...
HARTLY BY 1050 PM...
HAZLETTVILLE BY 1100 PM...
WOODSIDE BY 1105 PM...
CAMDEN AND CHESWOLD BY 1110 PM...
DOVER...DOVER DOWNS AND RISING SUN BY 1115 PM...
IN ADDITION TO LARGE HAIL AND DAMAGING WINDS...CONTINUOUS CLOUD TO
GROUND LIGHTNING IS OCCURRING WITH THIS STORM. MOVE INDOORS
IMMEDIATELY LIGHTNING IS ONE OF NATURES NUMBER ONE KILLERS.
REMEMBER...IF YOU CAN HEAR THUNDER...YOU ARE CLOSE ENOUGH TO BE
STRUCK BY LIGHTNING.
LAT...LON 3870 7614 3871 7615 3913 7596 3930 7543
3869 7532 3868 7581 3869 7582 3869 7589
3868 7591 3868 7616
TIME...MOT...LOC 0238Z 257DEG 23KT 3910 7580
$$
RPW1 follow-up statement
000
WWUS51 KPHI 010311
SVSPHI
SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE MOUNT HOLLY NJ
1111 PM EDT TUE SEP 30 2008
MDC035-010321-
/O.CAN.KPHI.SV.W.0266.000000T0000Z-081001T0345Z/
QUEEN ANNES MD-
1111 PM EDT TUE SEP 30 2008
...THE SEVERE THUNDERSTORM WARNING FOR CENTRAL QUEEN ANNES COUNTY IS
CANCELLED...
LAT...LON 3868 7600 3879 7595 3918 7569 3925 7542
3869 7532 3868 7581 3869 7582 3869 7589
3868 7591
TIME...MOT...LOC 0311Z 268DEG 27KT 3910 7551
$$
DEC001-005-MDC011-041-010345-
/O.CON.KPHI.SV.W.0266.000000T0000Z-081001T0345Z/
KENT DE-CAROLINE MD-SUSSEX DE-TALBOT MD-
1111 PM EDT TUE SEP 30 2008
...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 1145 PM EDT
FOR EAST CENTRAL TALBOT...NORTHWESTERN SUSSEX...SOUTHEASTERN CAROLINE
AND KENT COUNTIES...
AT 1108 PM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR CONTINUED TO
INDICATE A SEVERE THUNDERSTORM CAPABLE OF PRODUCING PENNY SIZE
HAIL...AND DAMAGING WINDS IN EXCESS OF 60 MPH. THIS STORM WAS
LOCATED NEAR CAMDEN...OR NEAR DOVER...MOVING EAST AT 31 MPH.
THE SEVERE THUNDERSTORM WILL BE NEAR...
BOWERS BY 1120 PM EDT...
IN ADDITION TO LARGE HAIL AND DAMAGING WINDS...CONTINUOUS CLOUD TO
GROUND LIGHTNING IS OCCURRING WITH THIS STORM. MOVE INDOORS
IMMEDIATELY LIGHTNING IS ONE OF NATURES NUMBER ONE KILLERS.
REMEMBER...IF YOU CAN HEAR THUNDER...YOU ARE CLOSE ENOUGH TO BE
STRUCK BY LIGHTNING.
LAT...LON 3868 7600 3879 7595 3918 7569 3925 7542
3869 7532 3868 7581 3869 7582 3869 7589
3868 7591
TIME...MOT...LOC 0311Z 268DEG 27KT 3910 7551
$$
RPWNearby
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.