Alert archive / Maine / Flood Watches in 2012

Flood Watch 1, NWS Gray, ME

April 22, 201211 counties in Maine; 7 counties in New Hampshire

NWS Gray, ME issued this flood watch at Apr 22, 2012, 3:20 AM EDT for 11 counties in Maine; 7 counties in New Hampshire. It took effect at Apr 22, 2012, 2:00 PM EDT. It was in force for 28 hr.

The area

The counties it named.

The facts

Issued: Apr 22, 2012, 3:20 AM EDT (07:20 UTC)
In effect from: Apr 22, 2012, 2:00 PM EDT
Expired: Apr 23, 2012, 6:00 PM EDT
In force: 28 hr
Issued by: NWS Gray, ME
Flood severity: None

Counties Androscoggin County, ME, Cumberland County, ME, Franklin County, ME, Kennebec County, ME, Knox County, ME, Lincoln County, ME, Oxford County, ME, Sagadahoc County, ME, Somerset County, ME, Waldo County, ME, York County, ME, Belknap County, NH, Carroll County, NH, Grafton County, NH, Merrimack County, NH, Rockingham County, NH, Strafford County, NH, Sullivan County, NH

The radar

The Portland,ME radar (KGYX), 27 km from the middle of the area, began a volume at 07:23 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

Albany, NY (KALY), launched 00:00Z, 7.3 hours before the alert went out and 300 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-p

Temperature in red, dew point in green, the mixed-layer parcel dashed.

Hodograph

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: 0 J/kg
Mixed-layer CIN: No buoyant parcel
Mixed-layer LCL: 445 m above ground
0-6 km bulk shear: 48 kt
0-1 km storm-relative helicity: -53 m²/s²
0-3 km storm-relative helicity: 197 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.0

Open this sounding in Storm Lab

What forecasters said that day

The local office's own words before this flood watch went out, as it sent them, from the Iowa Environmental Mesonet's archive of National Weather Service text.

NWS Gray, ME wrote its last area forecast discussion before this flood watch went out at Apr 21, 9:38 PM EDT, 5 hours 42 minutes earlier.

Area forecast discussion, Apr 21, 9:38 PM EDT, 5 hours 42 minutes before

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The office that day

Everything else NWS Gray, ME issued on the same UTC day.

Issued	Product	Office	Counties	Lasted
Apr 22, 3:00 PM EDT	Gale Warning	GYX		27 hr

Nearby

Flood Watches in Maine, 2012 Flood Watches in New Hampshire, 2012 Every flood watch 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.