Alert archive / Pennsylvania / Special Weather Statements in 2012
Special Weather Statement, NWS Philadelphia/Mount Holly
NWS Philadelphia/Mount Holly issued this special weather statement at Jan 15, 2012, 4:32 AM EST for Camden County, Gloucester County, New Jersey; Chester County, Delaware County, Philadelphia County, Pennsylvania. It was in force for 43 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
- Jan 15, 2012, 4:32 AM EST (09:32 UTC)
- Expired
- Jan 15, 2012, 5:15 AM EST
- In force
- 43 min
- Issued by
- NWS Philadelphia/Mount Holly
Counties Camden County, NJ, Gloucester County, NJ, Chester County, PA, Delaware County, PA, Philadelphia County, PA
The radar
The Philadelphia radar (KDIX), 61 km from the middle of the area, began a volume at 09:31 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
Wallops Is Stn, VA (KWAL), launched 00:00Z, 9.5 hours before the alert went out and 211 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
- 1469 m above ground
- 0-6 km bulk shear
- 51 kt
- 0-1 km storm-relative helicity
- -24 m²/s²
- 0-3 km storm-relative helicity
- 57 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted, in the capitals the NWS used until 2016.
762
WWUS81 KPHI 150932
SPSPHI
SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE MOUNT HOLLY NJ
432 AM EST SUN JAN 15 2012
NJZ017>019-027-PAZ067-068-070-071-151015-
CAMDEN NJ-CHESTER PA-DELAWARE PA-GLOUCESTER NJ-MONTGOMERY PA-
NORTHWESTERN BURLINGTON NJ-PHILADELPHIA PA-SOUTHEASTERN BURLINGTON NJ-
432 AM EST SUN JAN 15 2012
...A HEAVIER SNOW SHOWER WILL AFFECT PORTIONS OF CAMDEN...
GLOUCESTER...DELAWARE...PHILADELPHIA...CHESTER...MONTGOMERY AND
BURLINGTON COUNTIES...
AT 428 AM EST...NATIONAL WEATHER SERVICE DOPPLER RADAR AND SURFACE
OBSERVATIONS CONTINUED TO TRACK A HEAVIER SNOW SHOWER OVER
PHILADELPHIA AND LOWER MONTGOMERY COUNTY...MOVING SOUTHEAST AT ABOUT
30 MPH.
THIS SNOW SHOWER WILL CONTINUE TO PRODUCE A QUICK BURST OF SNOW AS IT
MOVES THROUGH PORTIONS OF THE PHILADELPHIA METRO AREA. GIVEN THE
COLD AIR IN PLACE, A QUICK COATING OF SNOW IS OCCURRING ALONG THE
PATH OF THIS HEAVIER SNOW SHOWER. USE CAUTION IF YOU ARE TRAVELING
IN THESE AREAS AS UNTREATED ROADWAYS CAN TURN SLIPPERY AND THE
VISIBILITY WILL QUICKLY LOWER TO NEAR ONE MILE FOR A BRIEF TIME.
LAT...LON 3971 7472 3973 7474 3962 7485 3953 7500
3966 7520 3966 7522 3978 7543 3980 7542
3984 7553 4006 7593 4023 7525 4003 7498
4004 7498 3978 7461
$$
FORECASTER: GORSEThe office that day
Everything else NWS Philadelphia/Mount Holly issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jan 15, 9:19 AM EST | Small Craft Advisory | PHI | 6 hr | |
| Jan 15, 3:51 AM EST | Special Weather Statement | PHI | Delaware, Montgomery, Philadelphia | 54 min |
Nearby
Special Weather Statements in Pennsylvania, 2012Special Weather Statements in New Jersey, 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.