Alert archive / Delaware / Special Weather Statements in 2012

Special Weather Statement, NWS Philadelphia/Mount Holly

June 12, 2012New Castle County, Delaware

NWS Philadelphia/Mount Holly issued this special weather statement at Jun 12, 2012, 7:10 PM EDT for New Castle County, Delaware. It was in force for 65 min. No storm report in the archive falls inside the area while it was in force.

The area

The outline as issued.

The facts

Issued
Jun 12, 2012, 7:10 PM EDT (23:10 UTC)
Expired
Jun 12, 2012, 8:15 PM EDT
In force
65 min
Issued by
NWS Philadelphia/Mount Holly

County New Castle County, DE

The radar

The Dover AFB radar (KDOX), 87 km from the middle of the area, began a volume at 23:10 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.

The nearest sounding before it

Phillips Aaf/Abe, MD (KAPG), launched 12:00Z, 11.2 hours before the alert went out and 47 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-pSkew-T log-p diagram, Phillips Aaf/Abe, MD at 12:00Z on 2012-06-12Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 21 joules per kilogram.LCLLFCEL10008507005003002001001 km2 km3 km6 km9 km12 km-30°-20°-10°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Phillips Aaf/Abe, MD at 12:00Z on 2012-06-12The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 17 square meters per square second.193958Sfc1 km3 km6 km9 kmRMLM
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
21 J/kg
Mixed-layer CIN
-1 J/kg
Mixed-layer LCL
470 m above ground
0-6 km bulk shear
21 kt
0-1 km storm-relative helicity
17 m²/s²
0-3 km storm-relative helicity
67 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.0

Open this sounding in Storm Lab

The text

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

561 
WWUS81 KPHI 122310
SPSPHI

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE MOUNT HOLLY NJ
710 PM EDT TUE JUN 12 2012

DEZ001-MDZ008-NJZ016-130015-
CECIL MD-NEW CASTLE DE-SALEM NJ-
710 PM EDT TUE JUN 12 2012

...AN AREA OF SHOWERS PRODUCING HEAVY RAINFALL WILL AFFECT NEW
CASTLE...CECIL AND SALEM COUNTIES...

AT 704 PM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED AN
AREA OF SHOWERS PRODUCING HEAVY RAINFALL 2 MILES SOUTH OF ELKTON...
MOVING EAST AT 25 MPH. THE SHOWERS WILL BE NEAR GLASGOW AROUND 715
PM...MOUNT PLEASANT...BROOKSIDE AROUND 720 PM...SAINT GEORGES...BEAR
AROUND 725 PM...SAINT GEORGES AROUND 730 PM...DELAWARE CITY...PORT
PENN...WILMINGTON MANOR AROUND 735 PM AND NEW CASTLE AROUND 740 PM.

VERY HEAVY RAIN WILL FALL FROM THESE SHOWERS...AND WILL CAUSE WATER 
TO POND ON ROADS AND QUICKLY FILL POOR DRAINAGE AREAS.

LAT...LON 3972 7555 3972 7552 3971 7551 3972 7550
      3974 7538 3946 7537 3947 7555 3950 7556
      3948 7558 3947 7559 3947 7591 3965 7591

$$

FORECASTER: MEOLA

The office that day

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

IssuedProductOfficeCountiesLasted
Jun 12, 3:28 AM EDTSmall Craft AdvisoryPHI6 days
Jun 12, 7:58 PM EDTAreal Flood AdvisoryPHICumberland, Salem4 hr
Jun 12, 1:18 PM EDTCoastal Flood StatementPHICaroline, Kent, Queen Anne's, Talbot6 hr
Jun 12, 7:23 PM EDTCoastal Flood AdvisoryPHICaroline, Kent, Queen Anne's, Talbot8 hr

Nearby

Special Weather Statements in Delaware, 2012Every special weather statement in 2012

Sources

The product and its follow-ups from the Iowa Environmental Mesonet's archive of National Weather Service and Storm Prediction Center text; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.