Alert archive / Maryland / Severe Thunderstorm Warnings in 2010
Severe Thunderstorm Warning 83, NWS Philadelphia/Mount Holly
NWS Philadelphia/Mount Holly issued this severe thunderstorm warning at Jun 24, 2010, 5:18 PM EDT for Kent County, Sussex County, Delaware; Caroline County, Queen Anne's County, Talbot County, Maryland. It was in force for 87 min. 3 reports 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 24, 2010, 5:18 PM EDT (21:18 UTC)
- Expired
- Jun 24, 2010, 6:45 PM EDT
- In force
- 87 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), 11 km from the middle of the area, began a volume at 21:22 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 24, 5:50 PM EDT | TSTM WND DMG | Farmington, DE | TREES DOWN IN FARMINTON |
| Jun 24, 5:50 PM EDT | TSTM WND DMG | Harrington, DE | TREES DOWN IN HARRINGTON |
| Jun 24, 6:20 PM EDT | TSTM WND DMG | Georgetown, DE | TREES DOWN IN GEORGETOWN |
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 24, 12:28 PM EDT | Severe Thunderstorm Watch | SPC | 8 hr |
The nearest sounding before it
Wallops Is Stn, VA (KWAL), launched 12:00Z, 9.3 hours before the alert went out and 89 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
- 134 J/kg
- Mixed-layer CIN
- -108 J/kg
- Mixed-layer LCL
- 1749 m above ground
- 0-6 km bulk shear
- 23 kt
- 0-1 km storm-relative helicity
- 45 m²/s²
- 0-3 km storm-relative helicity
- 31 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.4
The text
As transmitted, in the capitals the NWS used until 2016.
496
WUUS51 KPHI 242118
SVRPHI
DEC001-005-MDC011-035-041-242245-
/O.NEW.KPHI.SV.W.0083.100624T2118Z-100624T2245Z/
BULLETIN - EAS ACTIVATION REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE MOUNT HOLLY NJ
518 PM EDT THU JUN 24 2010
THE NATIONAL WEATHER SERVICE IN MOUNT HOLLY NJ HAS ISSUED A
* SEVERE THUNDERSTORM WARNING FOR...
SOUTHERN KENT COUNTY IN CENTRAL DELAWARE...
CAROLINE COUNTY IN EASTERN MARYLAND...
NORTHEASTERN TALBOT COUNTY IN EASTERN MARYLAND...
SOUTH CENTRAL QUEEN ANNE'S COUNTY IN NORTHEAST MARYLAND...
SUSSEX COUNTY IN SOUTHERN DELAWARE...
THIS INCLUDES THE CITY OF GEORGETOWN...
* UNTIL 645 PM EDT
* AT 516 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
RIDGELY...OR 11 MILES SOUTHEAST OF CENTERVILLE...AND MOVING EAST AT
35 MPH.
* THE SEVERE THUNDERSTORM WILL BE NEAR...
DENTON AND GREENSBORO AROUND 525 PM EDT...
ANDREWSVILLE AND HARRINGTON AROUND 545 PM EDT...
ELLENDALE AROUND 605 PM EDT...
MILTON AROUND 615 PM EDT...
LEWES AROUND 630 PM EDT...
REHOBOTH BEACH AROUND 640 PM EDT...
PRECAUTIONARY/PREPAREDNESS ACTIONS...
IN ADDITION TO LARGE HAIL AND DAMAGING WINDS...FREQUENT CLOUD TO
GROUND LIGHTNING IS OCCURRING WITH THIS STORM. MOVE INDOORS
IMMEDIATELY! LIGHTNING IS ONE OF NATURES GREATEST KILLERS.
REMEMBER...IF YOU CAN HEAR THUNDER...YOU ARE CLOSE ENOUGH TO BE
STRUCK BY LIGHTNING.
A SEVERE THUNDERSTORM WATCH REMAINS IN EFFECT UNTIL 800 PM EDT
THURSDAY EVENING FOR DELAWARE AND NORTHEASTERN MARYLAND AND NEW
JERSEY AND SOUTHEASTERN PENNSYLVANIA.
&&
LAT...LON 3846 7570 3865 7572 3870 7583 3867 7595
3895 7619 3906 7537 3903 7533 3893 7530
3883 7521 3879 7513 3880 7508 3846 7504
3845 7517
TIME...MOT...LOC 2118Z 287DEG 29KT 3893 7588
$$
KRUZDLOThe office that day
Everything else NWS Philadelphia/Mount Holly issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jun 24, 2:56 PM EDT | Severe Thunderstorm Warning | PHI | New Castle | 64 min |
| Jun 24, 3:29 PM EDT | Severe Thunderstorm Warning | PHI | New Castle | 61 min |
| Jun 24, 4:18 PM EDT | Severe Thunderstorm Warning | PHI | New Castle | 57 min |
| Jun 24, 5:46 PM EDT | Severe Thunderstorm Warning | PHI | Kent | 59 min |
| Jun 24, 6:53 PM EDT | Special Weather Statement | PHI | Sussex | 67 min |
| Jun 24, 7:14 PM EDT | Severe Thunderstorm Warning | PHI | Sussex | 50 min |
| Jun 24, 5:02 PM EDT | Special Weather Statement | PHI | Caroline, Queen Anne's | 58 min |
| Jun 24, 6:05 PM EDT | Special Weather Statement | PHI | Talbot | 55 min |
Nearby
Severe Thunderstorm Warnings in Maryland, 2010Severe Thunderstorm Warnings in Delaware, 2010Every severe thunderstorm warning in 2010
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.