Alert archive / Pennsylvania / Special Weather Statements in 2011
Special Weather Statement, NWS Philadelphia/Mount Holly
NWS Philadelphia/Mount Holly issued this special weather statement at Jun 14, 2011, 5:46 PM EDT for Montgomery County, Philadelphia County, Pennsylvania. It was in force for 59 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 14, 2011, 5:46 PM EDT (21:46 UTC)
- Expired
- Jun 14, 2011, 6:45 PM EDT
- In force
- 59 min
- Issued by
- NWS Philadelphia/Mount Holly
Counties Montgomery County, PA, Philadelphia County, PA
The radar
The Philadelphia radar (KDIX), 76 km from the middle of the area, began a volume at 21:49 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, 9.8 hours before the alert went out and 100 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
- 0 J/kg
- Mixed-layer CIN
- No buoyant parcel
- Mixed-layer LCL
- 1010 m above ground
- 0-6 km bulk shear
- 38 kt
- 0-1 km storm-relative helicity
- 0 m²/s²
- 0-3 km storm-relative helicity
- 18 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted, in the capitals the NWS used until 2016.
086 WWUS81 KPHI 142146 SPSPHI SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE MOUNT HOLLY NJ 546 PM EDT TUE JUN 14 2011 PAZ068-070-071-142245- DELAWARE PA-MONTGOMERY PA-PHILADELPHIA PA- 546 PM EDT TUE JUN 14 2011 ...A FEW SHOWERS AND ISOLATED THUNDERSTORM WILL AFFECT EASTERN DELAWARE...MONTGOMERY AND PHILADELPHIA COUNTIES... AT 541 PM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED AN AREA OF SHOWERS AND ISOLATED THUNDERSTORMS, WITH THE STRONGEST 19 MILES NORTHWEST OF PHILADELPHIA...MOVING SOUTH AT 15 MPH. THE THUNDERSTORM WILL BE NEAR NORTH WALES...SPRING HOUSE AROUND 600 PM...AMBLER...FORT WASHINGTON AROUND 615 PM...NORRISTOWN...EAST NORRITON AROUND 630 PM...BRIDGEPORT AND WEST CONSHOHOCKEN AROUND 645 PM. VERY HEAVY RAIN WILL FALL FROM THIS STORM...AND WILL CAUSE WATER TO POND ON ROADWAYS AND POOR DRAINAGE AREAS. AROUND A QUICK QUARTER OF AN INCH OF RAIN WILL OCCUR WITH THE STRONGER STORMS. LAT...LON 3999 7537 4035 7538 4022 7517 4001 7509 $$ TFG
The office that day
Everything else NWS Philadelphia/Mount Holly issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jun 14, 4:17 AM EDT | Coastal Flood Advisory | PHI | Atlantic, Burlington, Cape May, Cumberland, Middlesex, Monmouth and 1 more | 20 hr |
| Jun 14, 3:32 PM EDT | Special Weather Statement | PHI | Mercer | 88 min |
| Jun 14, 3:36 PM EDT | Special Weather Statement | PHI | Morris, Sussex | 84 min |
| Jun 14, 3:47 PM EDT | Special Weather Statement | PHI | Burlington | 88 min |
| Jun 14, 3:51 PM EDT | Special Weather Statement | PHI | Middlesex, Somerset | 84 min |
| Jun 14, 4:45 PM EDT | Special Weather Statement | PHI | Burlington | 90 min |
| Jun 14, 5:10 PM EDT | Special Weather Statement | PHI | Cape May | 95 min |
| Jun 14, 5:25 PM EDT | Areal Flood Advisory | PHI | Burlington | 87 min |
| Jun 14, 3:44 PM EDT | Special Weather Statement | PHI | Northampton | 91 min |
| Jun 14, 4:49 PM EDT | Special Weather Statement | PHI | Bucks | 86 min |
| Jun 14, 4:57 PM EDT | Special Weather Statement | PHI | Philadelphia | 93 min |
| Jun 14, 5:28 PM EDT | Areal Flood Advisory | PHI | Bucks | 85 min |
| Jun 14, 6:05 PM EDT | Special Weather Statement | PHI | Delaware | 55 min |
| Jun 14, 6:15 PM EDT | Areal Flood Advisory | PHI | Montgomery | 2 hr |
Nearby
Special Weather Statements in Pennsylvania, 2011Every 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; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.