Alert archive / Maryland / Severe Thunderstorm Warnings in 2010
Severe Thunderstorm Warning 70, NWS Philadelphia/Mount Holly
NWS Philadelphia/Mount Holly issued this severe thunderstorm warning at Jun 22, 2010, 9:33 PM EDT for Caroline County, Queen Anne's County, Maryland; Kent County, Sussex County, Delaware. It was in force for 27 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, 9:33 PM EDT (01:33 UTC)
- Expired
- Jun 22, 2010, 10:00 PM EDT
- In force
- 27 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
The radar
The Dover AFB radar (KDOX), 35 km from the middle of the area, began a volume at 01:36 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, 9:55 PM EDT | TSTM WND DMG | Camden, DE | TREE DOWN AT STATE POLICE STATION IN CAMDEN. |
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, 1.6 hours before the alert went out and 130 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
- 796 J/kg
- Mixed-layer CIN
- -136 J/kg
- Mixed-layer LCL
- 1216 m above ground
- 0-6 km bulk shear
- 34 kt
- 0-1 km storm-relative helicity
- 114 m²/s²
- 0-3 km storm-relative helicity
- 148 m²/s²
- Significant tornado parameter
- 0.2
- Supercell composite
- 5.1
The text
As transmitted, in the capitals the NWS used until 2016.
548
WUUS51 KPHI 230133
SVRPHI
DEC001-005-MDC011-035-230200-
/O.NEW.KPHI.SV.W.0070.100623T0133Z-100623T0200Z/
BULLETIN - EAS ACTIVATION REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE MOUNT HOLLY NJ
933 PM EDT TUE JUN 22 2010
THE NATIONAL WEATHER SERVICE IN MOUNT HOLLY NJ HAS ISSUED A
* SEVERE THUNDERSTORM WARNING FOR...
CENTRAL KENT COUNTY IN CENTRAL DELAWARE...
THIS INCLUDES THE CITY OF DOVER...
NORTHERN CAROLINE COUNTY IN EASTERN MARYLAND...
EASTERN QUEEN ANNE'S COUNTY IN NORTHEAST MARYLAND...
EXTREME NORTH CENTRAL SUSSEX COUNTY IN SOUTHERN DELAWARE...
* UNTIL 1000 PM EDT
* AT 929 PM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
LINE OF SEVERE THUNDERSTORMS. THESE STORMS WERE LOCATED ALONG A
LINE EXTENDING FROM SUDLERSVILLE TO GOLDSBORO TO JUMPTOWN...OR
ALONG A LINE EXTENDING FROM 13 MILES NORTHEAST OF CENTERVILLE TO 14
MILES EAST OF CENTERVILLE TO 8 MILES SOUTH OF CENTERVILLE...AND
MOVING EAST AT 35 MPH.
THIS IS THE REMAINS OF A VERY STRONG CLUSTER THAT IS STILL PACKING
STRONG WEST WINDS OF 50 TO 60 MPH.
* SEVERE THUNDERSTORMS WILL BE NEAR...
RIDGELY AROUND 940 PM EDT...
SANDTOWN...HAZLETTVILLE...GREENSBORO AND HARTLY AROUND 945 PM
EDT...
CAMDEN AROUND 950 PM EDT...
CHESWOLD...DOVER SPEEDWAY...WOODSIDE AND VIOLA AROUND 955 PM EDT...
LAT...LON 3894 7601 3907 7593 3917 7596 3923 7550
3922 7541 3907 7540 3893 7538
TIME...MOT...LOC 0132Z 266DEG 32KT 3917 7584 3909 7577
3894 7597
$$
DRAG1 follow-up statement
056
WWUS51 KPHI 230149
SVSPHI
SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE MOUNT HOLLY NJ
949 PM EDT TUE JUN 22 2010
DEC001-005-MDC011-035-230200-
/O.CON.KPHI.SV.W.0070.000000T0000Z-100623T0200Z/
KENT DE-CAROLINE MD-QUEEN ANNE'S MD-SUSSEX DE-
949 PM EDT TUE JUN 22 2010
...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 1000 PM EDT
FOR EXTREME NORTH CENTRAL SUSSEX...EAST CENTRAL QUEEN ANNE'S...
NORTHERN CAROLINE AND CENTRAL KENT COUNTIES...
AT 947 PM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR CONTINUED TO
INDICATE A LINE OF SEVERE THUNDERSTORMS CAPABLE OF PRODUCING DAMAGING
WINDS IN EXCESS OF 60 MPH. THESE STORMS WERE LOCATED ALONG A LINE
EXTENDING FROM HARTLY TO WOODSIDE TO RIDGELY...OR ALONG A LINE
EXTENDING FROM 9 MILES WEST OF DOVER TO 8 MILES SOUTHWEST OF DOVER TO
13 MILES SOUTHEAST OF CENTERVILLE...MOVING EAST AT 35 MPH.
SEVERE THUNDERSTORMS WILL BE NEAR...
CHESWOLD...WYOMING...WOODSIDE EAST AND VIOLA BY 955 PM EDT...
RISING SUN...MAGNOLIA...KENT ACRES AND DOVER BY 1000 PM EDT...
LAT...LON 3894 7601 3907 7582 3920 7577 3923 7550
3922 7541 3907 7540 3893 7538
TIME...MOT...LOC 0149Z 274DEG 29KT 3915 7566 3906 7559
3894 7583
$$
DRAGThe office that day
Everything else NWS Philadelphia/Mount Holly issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jun 22, 8:00 PM EDT | Severe Thunderstorm Warning | PHI | Caroline, Kent, Queen Anne's | 30 min |
| 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, 9:39 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.