Alert archive / Maryland / Special Weather Statements in 2011

Special Weather Statement, NWS Philadelphia/Mount Holly

May 19, 2011Caroline County, Maryland; Kent County, Delaware

NWS Philadelphia/Mount Holly issued this special weather statement at May 19, 2011, 1:00 PM EDT for Caroline County, Maryland; Kent County, Delaware. It was in force for 60 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: May 19, 2011, 1:00 PM EDT (17:00 UTC)
Expired: May 19, 2011, 2:00 PM EDT
In force: 60 min
Issued by: NWS Philadelphia/Mount Holly

Counties Kent County, DE, Caroline County, MD

The radar

The Dover AFB radar (KDOX), 33 km from the middle of the area, began a volume at 17:01 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
May 19, 2:06 PM EDT	HAIL 0.75	Smyrna, DE

Local storm reports filed while the alert was in force, from inside its polygon or its counties.

The nearest sounding before it

Phillips Aaf/Abe, MD (KAPG), launched 12:00Z, 5.0 hours before the alert went out and 59 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.

Skew-T log-p

Temperature in red, dew point in green, the mixed-layer parcel dashed.

Hodograph

The wind turning with height, colored by layer: ground to 1 km, 1 to 3 km, 3 to 6 km, 6 to 10 km.

Mixed-layer CAPE: 143 J/kg
Mixed-layer CIN: -55 J/kg
Mixed-layer LCL: 819 m above ground
0-6 km bulk shear: 33 kt
0-1 km storm-relative helicity: -13 m²/s²
0-3 km storm-relative helicity: 53 m²/s²
Significant tornado parameter: -0.0
Supercell composite: -0.1

Open this sounding in Storm Lab

The text

As transmitted, in the capitals the NWS used until 2016.

363 
WWUS81 KPHI 191700
SPSPHI

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE MOUNT HOLLY NJ
100 PM EDT THU MAY 19 2011

DEZ002-MDZ015-019-020-191800-
CAROLINE MD-KENT DE-QUEEN ANNE'S MD-TALBOT MD-
100 PM EDT THU MAY 19 2011

...A STRONG THUNDERSTORM WILL AFFECT CAROLINE...KENT...QUEEN ANNE'S
AND TALBOT COUNTIES...

AT 1257 PM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
STRONG THUNDERSTORM 19 MILES SOUTHEAST OF CENTERVILLE...MOVING
NORTHEAST AT 20 MPH. THE THUNDERSTORM WILL BE NEAR SANDTOWN...
ANDREWSVILLE AROUND 115 PM...FELTON...HARRINGTON AROUND 130 PM...
MAGNOLIA...VIOLA AROUND 145 PM...BOWERS AND LITTLE CREEK AROUND 200
PM.

OTHER THUNDERSTORMS ARE DEVELOPING OVER THE CENTRAL PORTIONS OF THE 
DELMARVA EARLY THIS AFTERNOON. BE ALERT FOR HEAVY DOWNPOURS...STRONG 
GUSTY WINDS AND CLOUD TO GROUND LIGHTNING STRIKES. IF SEVERE WEATHER 
IS HEADING YOUR WAY..GO INDOORS.


LAT...LON 3898 7603 3920 7596 3926 7584 3925 7577
      3930 7575 3930 7563 3936 7551 3928 7542
      3918 7539 3909 7540 3905 7535 3897 7533
      3890 7549 3884 7555 3883 7572 3872 7572
      3868 7595

$$
JJM

The office that day

Everything else NWS Philadelphia/Mount Holly issued on the same UTC day.

Issued	Product	Office	Counties	Lasted
May 18, 8:29 PM EDT	Areal Flood Warning	PHI	Morris	4 days
May 19, 3:35 AM EDT	River Flood Warning	PHI	Essex, Morris, Passaic	4 days
May 19, 10:26 AM EDT	River Flood Warning	PHI	Essex, Passaic	65 hr
May 19, 10:28 AM EDT	River Flood Warning	PHI	Passaic	11 hr
May 19, 2:19 PM EDT	Special Weather Statement	PHI	Camden, Cumberland, Gloucester, Salem	56 min
May 19, 2:34 PM EDT	Special Weather Statement	PHI	Warren	56 min
May 19, 3:01 PM EDT	Areal Flood Advisory	PHI	Camden, Gloucester, Salem	3 hr
May 19, 3:23 PM EDT	Special Weather Statement	PHI	Hunterdon	67 min
May 19, 3:34 PM EDT	Small Craft Advisory for Hazardous Seas	PHI		12 hr
May 19, 3:37 PM EDT	Severe Thunderstorm Warning	PHI	Warren	53 min
May 19, 3:40 PM EDT	Areal Flood Advisory	PHI	Hunterdon, Warren	5 hr
May 19, 3:52 PM EDT	Coastal Flood Statement	PHI	Atlantic, Burlington, Camden, Cape May, Cumberland, Gloucester and 4 more	8 hr
May 19, 4:02 PM EDT	Special Weather Statement	PHI	Camden, Gloucester	58 min
May 19, 4:06 PM EDT	Severe Thunderstorm Warning	PHI	Burlington, Camden, Gloucester	54 min
May 19, 4:20 PM EDT	Severe Thunderstorm Warning	PHI	Hunterdon, Warren	55 min
May 19, 4:31 PM EDT	Special Weather Statement	PHI	Hunterdon	59 min
May 19, 4:39 PM EDT	Flash Flood Warning	PHI	Hunterdon, Warren	4 hr
May 19, 5:08 PM EDT	Severe Thunderstorm Warning	PHI	Hunterdon, Morris, Somerset, Sussex, Warren	50 min
May 19, 5:21 PM EDT	Special Weather Statement	PHI	Burlington	54 min
May 19, 5:43 PM EDT	Special Marine Warning	PHI		62 min
May 19, 5:58 PM EDT	Special Weather Statement	PHI	Sussex	47 min
May 19, 6:08 PM EDT	Special Weather Statement	PHI	Cumberland, Salem	52 min
May 19, 7:34 PM EDT	Severe Thunderstorm Warning	PHI	Atlantic, Camden, Cumberland, Gloucester	56 min
May 19, 7:50 PM EDT	Special Weather Statement	PHI	Burlington, Camden	55 min
May 19, 12:31 PM EDT	Special Weather Statement	PHI	Berks	89 min
May 19, 1:26 PM EDT	Areal Flood Advisory	PHI	Berks	5 hr
May 19, 1:29 PM EDT	Severe Thunderstorm Warning	PHI	Berks	61 min
May 19, 2:22 PM EDT	Severe Thunderstorm Warning	PHI	Berks	41 min
May 19, 2:54 PM EDT	Areal Flood Advisory	PHI	Berks, Carbon, Lehigh, Northampton	3 hr
May 19, 3:00 PM EDT	Special Weather Statement	PHI	Carbon	60 min
May 19, 3:05 PM EDT	Special Weather Statement	PHI	Lehigh, Northampton	55 min
May 19, 3:12 PM EDT	Severe Thunderstorm Warning	PHI	Carbon, Lehigh, Monroe, Northampton	63 min
May 19, 3:15 PM EDT	Special Weather Statement	PHI	Chester, Delaware, Montgomery, Philadelphia	60 min
May 19, 4:18 PM EDT	Special Weather Statement	PHI	Monroe	57 min
May 19, 4:28 PM EDT	Special Weather Statement	PHI	Bucks	62 min
May 19, 4:50 PM EDT	Special Weather Statement	PHI	Monroe	55 min
May 19, 7:23 PM EDT	Areal Flood Warning	PHI	Montgomery, Philadelphia	82 min
May 18, 9:10 PM EDT	Coastal Flood Advisory	PHI	Caroline, Cecil, Kent, Queen Anne's, Talbot	11 hr
May 18, 11:46 PM EDT	Special Weather Statement	PHI	Caroline	59 min
May 19, 12:11 PM EDT	Special Weather Statement	PHI	Caroline	94 min
May 19, 12:43 PM EDT	Tornado Warning	PHI	Kent, Queen Anne's	32 min
May 19, 12:54 PM EDT	Special Weather Statement	PHI	Cecil	66 min
May 19, 1:37 PM EDT	Areal Flood Advisory	PHI	Caroline, Cecil, Kent, Queen Anne's	6 hr
May 19, 3:39 PM EDT	Special Weather Statement	PHI	Caroline, Kent, Queen Anne's, Talbot	51 min
May 19, 4:47 PM EDT	Special Weather Statement	PHI	Cecil, Kent, Queen Anne's	88 min
May 19, 5:13 PM EDT	Severe Thunderstorm Warning	PHI	Cecil, Kent	62 min
May 19, 1:44 PM EDT	Severe Thunderstorm Warning	PHI	Kent, New Castle	46 min
May 19, 5:11 PM EDT	Severe Thunderstorm Warning	PHI	Kent	34 min
May 19, 5:16 PM EDT	Severe Thunderstorm Warning	PHI	Kent	29 min
May 19, 5:23 PM EDT	Severe Thunderstorm Warning	PHI	Kent, New Castle	53 min
May 19, 5:46 PM EDT	Severe Thunderstorm Warning	PHI	Kent	30 min
May 19, 6:12 PM EDT	Severe Thunderstorm Warning	PHI	Kent, New Castle	18 min
May 19, 6:53 PM EDT	Special Weather Statement	PHI	Sussex	67 min

Nearby

Special Weather Statements in Maryland, 2011 Special Weather Statements in Delaware, 2011 Every special weather statement in 2011

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.