Alert archive / Maine / Frost Advisories in 2009
Frost Advisory 9, NWS Gray, ME
NWS Gray, ME issued this frost advisory at Oct 11, 2009, 2:59 AM EDT for Cumberland County, York County, Maine; Rockingham County, New Hampshire. It took effect at Oct 12, 2009, 2:00 AM EDT. It was in force for 5 hr.
The area
The counties it named.
The facts
- Issued
- Oct 11, 2009, 2:59 AM EDT (06:59 UTC)
- In effect from
- Oct 12, 2009, 2:00 AM EDT
- Expired
- Oct 12, 2009, 7:00 AM EDT
- In force
- 5 hr
- Issued by
- NWS Gray, ME
Counties Cumberland County, ME, York County, ME, Rockingham County, NH
The radar
The Portland,ME radar (KGYX), 64 km from the middle of the area, began a volume at 07:03 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
Chatham, MA (KCHH), launched 00:00Z, 7.0 hours before the alert went out and 202 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
- 1113 m above ground
- 0-6 km bulk shear
- 67 kt
- 0-1 km storm-relative helicity
- -155 m²/s²
- 0-3 km storm-relative helicity
- -72 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The office that day
Everything else NWS Gray, ME issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Oct 11, 2:58 AM EDT | Small Craft Advisory | GYX | 25 hr |
Nearby
Frost Advisories in Maine, 2009Frost Advisories in New Hampshire, 2009Every frost advisory in 2009
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.