Alert archive / Maryland / Severe Thunderstorm Warnings in 2010
Severe Thunderstorm Warning 66, NWS Philadelphia/Mount Holly
NWS Philadelphia/Mount Holly issued this severe thunderstorm warning at Jun 22, 2010, 8:00 PM EDT for Caroline County, Kent County, Queen Anne's County, Maryland; Kent County, Delaware. It was in force for 30 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 22, 2010, 8:00 PM EDT (00:00 UTC)
- Expired
- Jun 22, 2010, 8:30 PM EDT
- In force
- 30 min
- Issued by
- NWS Philadelphia/Mount Holly
- Area
- Storm-based polygon
Counties Kent County, DE, Caroline County, MD, Kent County, MD, Queen Anne's County, MD
The radar
The Dover AFB radar (KDOX), 54 km from the middle of the area, began a volume at 00:00 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 22, 8:11 PM EDT | HAIL 1 | Sudlersville, MD | QUARTER SIZE HAIL REPORTED IN SUDLERSVILLE. |
Local storm reports filed while the alert was in force, from inside its polygon or its counties.
The nearest sounding before it
Washington/Dulle, VA (KIAD), launched 00:00Z, 0.0 hours before the alert went out and 139 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
- 1520 J/kg
- Mixed-layer CIN
- -14 J/kg
- Mixed-layer LCL
- 1696 m above ground
- 0-6 km bulk shear
- 42 kt
- 0-1 km storm-relative helicity
- 81 m²/s²
- 0-3 km storm-relative helicity
- 142 m²/s²
- Significant tornado parameter
- 0.2
- Supercell composite
- 3.4
The text
As transmitted, in the capitals the NWS used until 2016.
454 WUUS51 KPHI 230000 SVRPHI DEC001-MDC011-029-035-230030- /O.NEW.KPHI.SV.W.0066.100623T0000Z-100623T0030Z/ BULLETIN - EAS ACTIVATION REQUESTED SEVERE THUNDERSTORM WARNING NATIONAL WEATHER SERVICE MOUNT HOLLY NJ 800 PM EDT TUE JUN 22 2010 THE NATIONAL WEATHER SERVICE IN MOUNT HOLLY NJ HAS ISSUED A * SEVERE THUNDERSTORM WARNING FOR... WEST CENTRAL KENT COUNTY IN CENTRAL DELAWARE... EXTREME NORTHEASTERN CAROLINE COUNTY IN EASTERN MARYLAND... CENTRAL KENT COUNTY IN NORTHEAST MARYLAND... NORTHEASTERN QUEEN ANNE'S COUNTY IN NORTHEAST MARYLAND... * UNTIL 830 PM EDT * AT 758 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 CRUMPTON...OR 15 MILES NORTHEAST OF CENTERVILLE...AND MOVING SOUTHEAST AT 35 MPH. * THE SEVERE THUNDERSTORM WILL BE NEAR... SUDLERSVILLE AND MILLINGTON AROUND 805 PM EDT... HARTLY AROUND 820 PM EDT... PRECAUTIONARY/PREPAREDNESS ACTIONS... 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 GREATEST KILLERS. REMEMBER...IF YOU CAN HEAR THUNDER...YOU ARE CLOSE ENOUGH TO BE STRUCK BY LIGHTNING. IN ADDITION TO LARGE HAIL AND DAMAGING WINDS...HEAVY RAIN WILL OCCUR WITH THESE STORMS AND CAUSE LOW-LYING AND POOR DRAINAGE FLOODING. A SEVERE THUNDERSTORM WATCH REMAINS IN EFFECT UNTIL 900 PM EDT TUESDAY EVENING FOR NORTHERN DELAWARE AND NORTHEAST MARYLAND AND SOUTHERN NEW JERSEY AND SOUTHEASTERN PENNSYLVANIA. && LAT...LON 3926 7571 3907 7569 3919 7600 3928 7601 TIME...MOT...LOC 2359Z 299DEG 30KT 3922 7592 $$ DRAG
The office that day
Everything else NWS Philadelphia/Mount Holly issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jun 22, 8:29 PM EDT | Severe Thunderstorm Warning | PHI | Caroline, Queen Anne's | 46 min |
| Jun 22, 9:12 PM EDT | Severe Thunderstorm Warning | PHI | Caroline, Kent, Queen Anne's, Talbot | 18 min |
| Jun 22, 9:33 PM EDT | Severe Thunderstorm Warning | PHI | Caroline, Queen Anne's | 27 min |
| Jun 22, 9:39 PM EDT | Special Weather Statement | PHI | Caroline | 66 min |
| Jun 22, 9:46 PM EDT | Severe Thunderstorm Warning | PHI | Caroline, Queen Anne's, Talbot | 59 min |
| Jun 22, 8:14 PM EDT | Special Weather Statement | PHI | Kent, New Castle | 61 min |
| Jun 22, 10:36 PM EDT | Special Weather Statement | PHI | Sussex | 54 min |
| Jun 22, 10:49 PM EDT | Severe Thunderstorm Warning | PHI | Sussex | 41 min |
| Jun 22, 11:51 PM EDT | Special Weather Statement | PHI | Sussex | 54 min |
| Jun 23, 12:58 AM EDT | Special Weather Statement | PHI | Sussex | 92 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.