Alert archive / New York / Mesoscale Discussions in 2007
Mesoscale Discussion 2239
The Storm Prediction Center issued this mesoscale discussion at Dec 16, 2007, 1:14 PM EST for Aroostook County, Maine; 5 counties in New York; 5 counties in Vermont. It was in force for 6 hr.
The area
The outline as issued.
The facts
- Issued
- Dec 16, 2007, 1:14 PM EST (18:14 UTC)
- Expired
- Dec 16, 2007, 7:15 PM EST
- In force
- 6 hr
- Issued by
- the Storm Prediction Center
Counties Aroostook County, ME, Clinton County, NY, Franklin County, NY, Jefferson County, NY, Lewis County, NY, St. Lawrence County, NY, Chittenden County, VT, Franklin County, VT, Grand Isle County, VT, Lamoille County, VT, Orleans County, VT
The radar
The Burlington radar (KCXX), 204 km from the middle of the area, began a volume at 18:17 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
Gray, ME (KGYX), launched 12:00Z, 6.2 hours before the alert went out and 263 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
- 547 m above ground
- 0-6 km bulk shear
- 86 kt
- 0-1 km storm-relative helicity
- 286 m²/s²
- 0-3 km storm-relative helicity
- 680 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted, in the capitals the NWS used until 2016.
000 ACUS11 KWNS 161815 SWOMCD SPC MCD 161814 MEZ000-NHZ000-VTZ000-NYZ000-170015- MESOSCALE DISCUSSION 2239 NWS STORM PREDICTION CENTER NORMAN OK 1214 PM CST SUN DEC 16 2007 AREAS AFFECTED...NRN NY NEWD INTO NRN ME CONCERNING...HEAVY SNOW VALID 161814Z - 170015Z BANDS OF HEAVY SNOW WILL CONTINUE TO DEVELOP NEWD ACROSS NY...EXTENDING INTO NRN ME LATER THIS AFTERNOON. HEAVY SNOWFALL RATES OF 2-3 IN/HR+ (5-8 CM/HR) ARE LIKELY. DEEP FRONTOGENETICAL FORCING WILL INCREASE FROM FAR NRN NY INTO NRN ME AS STRONG WARM ADVECTION ATOP SURFACE COLD LAYER CONTINUES. MEANWHILE...A SECONDARY AREA OF FORCING ASSOCIATED WITH UPPER LOW WILL ALSO INTENSIFY A N-S ORIENTED BAND OF PRECIPITATION AS IT CONTINUES EWD ACROSS NRN NY INTO SRN QUEBEC. FORECAST SOUNDINGS SHOW DEEP LAYERS FAVORABLE FOR RAPID DENDRITIC GROWTH AND AMPLE PRECIPITABLE WATER. THUS...VERY HEAVY SNOW RATES ARE ANTICIPATED...LOCALLY 3 IN/HR OR GREATER. ..JEWELL.. 12/16/2007 ...PLEASE SEE WWW.SPC.NOAA.GOV FOR GRAPHIC PRODUCT... ...NOTICE... SPC WINTER WEATHER MESOSCALE DISCUSSIONS WILL BE ISSUED ON A SCHEDULED BASIS FROM DECEMBER 1 THROUGH FEBRUARY 28...FOUR TIMES A DAY...AROUND 00 UTC...06 UTC...12 UTC...AND 18 UTC FOR SIGNIFICANT SHORT RANGE WINTER WEATHER EVENTS. ATTN...WFO...CAR...GYX...BTV...ALY...BUF... 46886780 45827006 44837187 43687531 43727627 44257637 45437648 46517391 47537045 47746937 47636840 47486799
SPC that day
Everything else SPC issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Dec 16, 8:29 AM EST | Mesoscale Discussion | SPC | Androscoggin, Cumberland, Franklin, Kennebec, Lincoln, Oxford and 4 more | 5 hr |
| Dec 15, 7:43 PM EST | Mesoscale Discussion | SPC | Allegany, Cattaraugus, Chautauqua, Steuben | 6 hr |
| Dec 16, 2:21 AM EST | Mesoscale Discussion | SPC | Albany, Allegany, Broome, Cattaraugus, Cayuga, Chemung and 42 more | 5 hr |
Nearby
Mesoscale Discussions in New York, 2007Mesoscale Discussions in Vermont, 2007Mesoscale Discussions in Maine, 2007Every mesoscale discussion in 2007
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.