Alert archive / New Hampshire / Areal Flood Advisories in 2011
Areal Flood Advisory 21, NWS Gray, ME
NWS Gray, ME issued this areal flood advisory at Aug 22, 2011, 12:38 AM EDT for 4 counties in New Hampshire. It was in force for 112 min.
The area
The counties it named.
The facts
- Issued
- Aug 22, 2011, 12:38 AM EDT (04:38 UTC)
- Expired
- Aug 22, 2011, 2:30 AM EDT
- In force
- 112 min
- Issued by
- NWS Gray, ME
- Area
- Storm-based polygon
Counties Carroll County, NH, Coos County, NH, Grafton County, NH, Sullivan County, NH
The radar
The Portland,ME radar (KGYX), 111 km from the middle of the area, began a volume at 04:41 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, 4.6 hours before the alert went out and 227 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
- 359 J/kg
- Mixed-layer CIN
- -42 J/kg
- Mixed-layer LCL
- 972 m above ground
- 0-6 km bulk shear
- 33 kt
- 0-1 km storm-relative helicity
- 123 m²/s²
- 0-3 km storm-relative helicity
- 162 m²/s²
- Significant tornado parameter
- 0.2
- Supercell composite
- 2.2
What forecasters said that day
The local office's own words before this areal flood advisory 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 areal flood advisory went out at Aug 21, 6:04 PM EDT, 6 hours 34 minutes earlier.
Area forecast discussion, Aug 21, 6:04 PM EDT, 6 hours 34 minutes before
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</html>Hazardous weather outlook, Aug 21, 3:39 PM EDT, 8 hours 59 minutes before
HAZARDOUS WEATHER OUTLOOK NATIONAL WEATHER SERVICE GRAY ME 339 PM EDT SUN AUG 21 2011 MEZ007>009-012>014-018>021-023>025-NHZ001>010-013-014-221100- NORTHERN OXFORD-NORTHERN FRANKLIN-CENTRAL SOMERSET-SOUTHERN OXFORD- SOUTHERN FRANKLIN-SOUTHERN SOMERSET-INTERIOR YORK- INTERIOR CUMBERLAND-ANDROSCOGGIN-KENNEBEC-COASTAL YORK- COASTAL CUMBERLAND-SAGADAHOC-NORTHERN COOS-SOUTHERN COOS- NORTHERN GRAFTON-NORTHERN CARROLL-SOUTHERN GRAFTON-SOUTHERN CARROLL- SULLIVAN-MERRIMACK-BELKNAP-STRAFFORD-INTERIOR ROCKINGHAM- COASTAL ROCKINGHAM- 339 PM EDT SUN AUG 21 2011 ...SEVERE THUNDERSTORM WATCH 797 IN EFFECT UNTIL 10 PM EDT THIS EVENING... THIS HAZARDOUS WEATHER OUTLOOK IS FOR WESTERN MAINE...CENTRAL NEW HAMPSHIRE...NORTHERN NEW HAMPSHIRE AND SOUTHEASTERN NEW HAMPSHIRE. .DAY ONE...THIS AFTERNOON AND TONIGHT. PLEASE LISTEN TO NOAA WEATHER RADIO OR GO TO WEATHER.GOV ON THE INTERNET FOR MORE INFORMATION ABOUT THE FOLLOWING HAZARDS. SEVERE THUNDERSTORM WATCH. A STRONG COLD FRONT WILL APPROACH NEW HAMPSHIRE AND MAINE TONIGHT. SHOWERS AND THUNDERSTORMS HAVE DEVELOPED OUT AHEAD OF THE FRONT ACROSS NEW HAMPSHIRE THIS AFTERNOON...AND WILL MOVE INTO MAINE THIS EVENING. A FEW STORMS MAY BE CAPABLE OF PRODUCING DAMAGING WINDS AND LARGE HAIL. HEAVY DOWNPOURS AND FREQUENT LIGHTNING IS ALSO EXPECTED. .DAYS TWO THROUGH SEVEN...MONDAY THROUGH SATURDAY. NO HAZARDOUS WEATHER IS EXPECTED AT THIS TIME. .SPOTTER INFORMATION STATEMENT... SPOTTERS ARE ENCOURAGED TO CALL OR RADIO IN SIGNIFICANT WEATHER CONDITIONS ACCORDING TO STANDARD OPERATING PROCEDURES. MEZ022-026>028-221100- INTERIOR WALDO-LINCOLN-KNOX-COASTAL WALDO- 339 PM EDT SUN AUG 21 2011 THIS HAZARDOUS WEATHER OUTLOOK IS FOR WESTERN MAINE. .DAY ONE...THIS AFTERNOON AND TONIGHT. A STRONG COLD FRONT WILL APPROACH MAINE TONIGHT. SHOWERS AND THUNDERSTORMS HAVE DEVELOPED OUT AHEAD OF THE FRONT ACROSS NEW HAMPSHIRE THIS AFTERNOON...AND WILL MOVE INTO MAINE THIS EVENING. HEAVY DOWNPOURS AND FREQUENT LIGHTNING ARE EXPECTED FROM THESE STORMS. .DAYS TWO THROUGH SEVEN...MONDAY THROUGH SATURDAY. NO HAZARDOUS WEATHER IS EXPECTED AT THIS TIME. .SPOTTER INFORMATION STATEMENT... SPOTTERS ARE ENCOURAGED TO CALL OR RADIO IN SIGNIFICANT WEATHER CONDITIONS ACCORDING TO STANDARD OPERATING PROCEDURES. ANZ153-221100- CASCO BAY- 339 PM EDT SUN AUG 21 2011 ...SEVERE THUNDERSTORM WATCH 797 IN EFFECT UNTIL 10 PM EDT THIS EVENING... THIS HAZARDOUS WEATHER OUTLOOK IS FOR CASCO BAY. .DAY ONE...THIS AFTERNOON AND TONIGHT. PLEASE LISTEN TO NOAA WEATHER RADIO OR GO TO WEATHER.GOV ON THE INTERNET FOR MORE INFORMATION ABOUT THE FOLLOWING HAZARDS. SEVERE THUNDERSTORM WATCH. SHOWERS AND THUNDERSTORMS ARE EXPECTED TO DEVELOP OUT AHEAD OF THE A COLD FRONT THIS EVENING IN WESTERN MAINE. A FEW STORMS MAY BE CAPABLE OF PRODUCING DAMAGING WINDS AND LARGE HAIL. HEAVY DOWNPOURS AND FREQUENT LIGHTNING ARE ALSO EXPECTED. .DAYS TWO THROUGH SEVEN...MONDAY THROUGH SATURDAY. NO HAZARDOUS WEATHER IS EXPECTED AT THIS TIME. .SPOTTER INFORMATION STATEMENT... SPOTTERS ARE ENCOURAGED TO CALL OR RADIO IN SIGNIFICANT WEATHER CONDITIONS ACCORDING TO STANDARD OPERATING PROCEDURES. ANZ150>152-154-221100- STONINGTON ME TO PORT CLYDE ME OUT TO 25 NM-PENOBSCOT BAY- PORT CLYDE ME TO CAPE ELIZABETH ME OUT TO 25 NM- CAPE ELIZABETH ME TO MERRIMACK RIVER MA OUT TO 25 NM- 339 PM EDT SUN AUG 21 2011 .DAY ONE...THIS AFTERNOON AND TONIGHT. A STRONG COLD FRONT WILL APPROACH MAINE TONIGHT. SHOWERS AND THUNDERSTORMS HAVE DEVELOPED OUT AHEAD OF THE FRONT ACROSS NEW HAMPSHIRE THIS AFTERNOON...AND WILL MOVE INTO MAINE THIS EVENING. HEAVY DOWNPOURS AND FREQUENT LIGHTNING ARE EXPECTED FROM THESE STORMS. .DAYS TWO THROUGH SEVEN...MONDAY THROUGH SATURDAY. NO HAZARDOUS WEATHER IS EXPECTED AT THIS TIME. .SPOTTER INFORMATION STATEMENT... SPOTTERS ARE ENCOURAGED TO CALL OR RADIO IN SIGNIFICANT WEATHER CONDITIONS ACCORDING TO STANDARD OPERATING PROCEDURES.
The office that day
Everything else NWS Gray, ME issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Aug 22, 1:53 AM EDT | Areal Flood Advisory | GYX | Franklin, Oxford | 112 min |
| Aug 22, 2:27 AM EDT | Special Weather Statement | GYX | Kennebec | 48 min |
| Aug 22, 2:57 AM EDT | Special Weather Statement | GYX | Kennebec | 63 min |
| Aug 22, 4:23 AM EDT | Areal Flood Advisory | GYX | Androscoggin, Cumberland, Kennebec, Lincoln, Sagadahoc, York | 112 min |
| Aug 22, 11:51 AM EDT | Small Craft Advisory for Hazardous Seas | GYX | 10 hr | |
| Aug 21, 8:59 PM EDT | Special Weather Statement | GYX | Carroll | 46 min |
Nearby
Areal Flood Advisories in New Hampshire, 2011Every areal flood advisory 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.