Alert archive / Massachusetts / Areal Flood Advisories in 2012
Areal Flood Advisory 79, NWS Boston/Norton, MA
NWS Boston/Norton, MA issued this areal flood advisory at Sep 7, 2012, 7:57 PM EDT for Franklin County, Hampshire County, Worcester County, Massachusetts. It was in force for 93 min.
The area
The counties it named.
The facts
- Issued
- Sep 7, 2012, 7:57 PM EDT (23:57 UTC)
- Expired
- Sep 7, 2012, 9:30 PM EDT
- In force
- 93 min
- Issued by
- NWS Boston/Norton, MA
- Area
- Storm-based polygon
Counties Franklin County, MA, Hampshire County, MA, Worcester County, MA
The radar
The Boston radar (KBOX), 116 km from the middle of the area, began a volume at 23:57 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 12:00Z, 12.0 hours before the alert went out and 217 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
- 834 J/kg
- Mixed-layer CIN
- -26 J/kg
- Mixed-layer LCL
- 508 m above ground
- 0-6 km bulk shear
- 19 kt
- 0-1 km storm-relative helicity
- 35 m²/s²
- 0-3 km storm-relative helicity
- 49 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
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 Boston/Norton, MA wrote its last area forecast discussion before this areal flood advisory went out at Sep 7, 7:49 PM EDT, 8 minutes earlier.
Area forecast discussion, Sep 7, 7:49 PM EDT, 8 minutes before
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HAZARDOUS WEATHER OUTLOOK NATIONAL WEATHER SERVICE TAUNTON MA 446 PM EDT FRI SEP 7 2012 CTZ002>004-MAZ002>006-008>018-021-026-NHZ011-012-015-RIZ001>005- 082045- HARTFORD CT-TOLLAND CT-WINDHAM CT-WESTERN FRANKLIN MA- EASTERN FRANKLIN MA-NORTHERN WORCESTER MA-CENTRAL MIDDLESEX MA- WESTERN ESSEX MA-WESTERN HAMPSHIRE MA-WESTERN HAMPDEN MA- EASTERN HAMPSHIRE MA-EASTERN HAMPDEN MA-SOUTHERN WORCESTER MA- WESTERN NORFOLK MA-SOUTHEAST MIDDLESEX MA-SUFFOLK MA- EASTERN NORFOLK MA-NORTHERN BRISTOL MA-WESTERN PLYMOUTH MA- SOUTHERN PLYMOUTH MA-NORTHERN MIDDLESEX MA-CHESHIRE NH- EASTERN HILLSBOROUGH NH-WESTERN AND CENTRAL HILLSBOROUGH NH- NORTHWEST PROVIDENCE RI-SOUTHEAST PROVIDENCE RI-WESTERN KENT RI- EASTERN KENT RI-BRISTOL RI- 446 PM EDT FRI SEP 7 2012 THIS HAZARDOUS WEATHER OUTLOOK IS FOR NORTHERN CONNECTICUT...CENTRAL MASSACHUSETTS...EASTERN MASSACHUSETTS...NORTHEASTERN MASSACHUSETTS...SOUTHEASTERN MASSACHUSETTS...WESTERN MASSACHUSETTS...SOUTHERN NEW HAMPSHIRE AND NORTHERN RHODE ISLAND. .DAY ONE...TONIGHT. NO HAZARDOUS WEATHER IS EXPECTED AT THIS TIME. .DAYS TWO THROUGH SEVEN...SATURDAY THROUGH THURSDAY. A BRIEF PERIOD OF HEAVY DOWNPOURS WITH A LOW RISK OF LOCALIZED FLOODING IS POSSIBLE SATURDAY NIGHT AS AN APPROACHING COLD FRONT INTERACTS WITH TROPICAL MOISTURE FROM LESLIE. A FEW OF THE HEAVIER SHOWERS AND/OR THUNDERSTORMS MAY CONTAIN STRONG GUSTY WINDS AS WELL. .SPOTTER INFORMATION STATEMENT... SPOTTER ACTIVATION MAY BE NEEDED. MAZ007-019-020-022>024-RIZ006>008-082045- EASTERN ESSEX MA-EASTERN PLYMOUTH MA-SOUTHERN BRISTOL MA- BARNSTABLE MA-DUKES MA-NANTUCKET MA-WASHINGTON RI-NEWPORT RI- BLOCK ISLAND RI- 446 PM EDT FRI SEP 7 2012 ...HIGH SURF ADVISORY IN EFFECT FROM 8 AM SATURDAY TO 8 AM EDT SUNDAY... THIS HAZARDOUS WEATHER OUTLOOK IS FOR NORTHEASTERN MASSACHUSETTS...SOUTHEASTERN MASSACHUSETTS AND SOUTHERN RHODE ISLAND. .DAY ONE...TONIGHT. NO HAZARDOUS WEATHER IS EXPECTED AT THIS TIME. .DAYS TWO THROUGH SEVEN...SATURDAY THROUGH THURSDAY. PLEASE LISTEN TO NOAA WEATHER RADIO OR GO TO WEATHER.GOV ON THE INTERNET FOR MORE INFORMATION ABOUT THE FOLLOWING HAZARDS. HIGH SURF ADVISORY. A BRIEF PERIOD OF HEAVY DOWNPOURS WITH A LOW RISK OF LOCALIZED FLOODING IS POSSIBLE SATURDAY NIGHT AS AN APPROACHING COLD FRONT INTERACTS WITH TROPICAL MOISTURE FROM LESLIE. A FEW OF THE HEAVIER SHOWERS AND/OR THUNDERSTORMS MAY CONTAIN STRONG GUSTY WINDS AS WELL. .SPOTTER INFORMATION STATEMENT... SPOTTER ACTIVATION MAY BE NEEDED. ANZ230>237-250-251-254>256-082045- BOSTON HARBOR-CAPE COD BAY-NANTUCKET SOUND-VINEYARD SOUND- BUZZARDS BAY-RHODE ISLAND SOUND-NARRAGANSETT BAY-BLOCK ISLAND SOUND- COASTAL WATERS EAST OF IPSWICH BAY AND THE STELLWAGEN BANK NATIONAL MARINE SANCTUARY-MASSACHUSETTS BAY AND IPSWICH BAY- COASTAL WATERS FROM PROVINCETOWN MA TO CHATHAM MA TO NANTUCKET MA OUT 20 NM- COASTAL WATERS EXTENDING OUT TO 25 NM SOUTH OF MARTHAS VINEYARD AND NANTUCKET- COASTAL WATERS FROM MONTAUK NY TO MARTHAS VINEYARD EXTENDING OUT TO 20 NM SOUTH OF BLOCK ISLAND- 446 PM EDT FRI SEP 7 2012 THIS HAZARDOUS WEATHER OUTLOOK IS FOR MASSACHUSETTS COASTAL WATERS AND RHODE ISLAND COASTAL WATERS. .DAY ONE...TONIGHT. NO HAZARDOUS WEATHER IS EXPECTED AT THIS TIME. .DAYS TWO THROUGH SEVEN...SATURDAY THROUGH THURSDAY. LARGE SWELLS FROM HURRICANE LESLIE WILL AFFECT THE SOUTHERN NEW ENGLAND WATERS THIS WEEKEND INTO EARLY NEXT WEEK. THEN EARLY NEXT WEEK INCREASING NORTH WIND WAVES WILL COMBINE WITH LARGE SWELLS FROM LESLIE YIELDING HAZARDOUS SEA CONDITIONS. .SPOTTER INFORMATION STATEMENT... SPOTTER ACTIVATION MAY BE NEEDED.
In the hours before
Special weather statement, Sep 7, 5:46 PM EDT, 2 hours 11 minutes before
SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE TAUNTON MA 546 PM EDT FRI SEP 7 2012 MAZ005-014-015-072245- CENTRAL MIDDLESEX COUNTY MA-SOUTHEAST MIDDLESEX MA-SUFFOLK MA- 546 PM EDT FRI SEP 7 2012 AT 542 PM EDT NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A STRONG THUNDERSTORM CAPABLE OF PRODUCING WIND GUSTS TO 40 MPH OVER CONCORD...OR ABOUT 7 MILES NORTHWEST OF WALTHAM...MOVING EAST AT 10 MPH. * SOME LOCATIONS WHICH MAY BE AFFECTED INCLUDE...CONCORD... CARLISLE... LINCOLN...WESTON...BEDFORD...WALTHAM...BILLERICA... LEXINGTON...WATERTOWN...BURLINGTON...BELMONT...ARLINGTON... WOBURN...WINCHESTER...WILMINGTON...SOMERVILLE...MEDFORD AND CAMBRIDGE. FOR YOUR SAFETY...GET INSIDE WHEN THIS STORM APPROACHES. WINDS MAY BE STRONG ENOUGH TO BRING DOWN SMALL BRANCHES. MINOR STREET FLOODING AND PONDING OF WATER IN POOR DRAINAGE AREAS IS ALSO POSSIBLE. && LAT...LON 4258 7114 4236 7108 4233 7145 4251 7150 BELK
Special weather statement, Sep 7, 6:14 PM EDT, 1 hour 43 minutes before
SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE TAUNTON MA
614 PM EDT FRI SEP 7 2012
MAZ014>016-019-022-072245-
BARNSTABLE MA-EASTERN NORFOLK MA-EASTERN PLYMOUTH MA-SOUTHEAST
MIDDLESEX MA-SUFFOLK MA-
614 PM EDT FRI SEP 7 2012
AT 610 PM EDT NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
STRONG THUNDERSTORM CAPABLE OF PRODUCING WIND GUSTS TO 40 MPH AND
PENNY SIZED HAIL OVER QUINCY...MOVING NORTHEAST AT 5 MPH.
* SOME LOCATIONS AFFECTED INCLUDE...HULL AND QUINCY.
FOR YOUR SAFETY...GET INSIDE WHEN THIS STORM APPROACHES. WINDS MAY BE
STRONG ENOUGH TO BRING DOWN SMALL BRANCHES. MINOR STREET FLOODING AND
PONDING OF WATER IN POOR DRAINAGE AREAS IS ALSO POSSIBLE.
&&
LAT...LON 4221 7095 4227 7105 4232 7101 4234 7093
4231 7092 4232 7089 4234 7090 4235 7088
4231 7089 4228 7086 4227 7083
BELKLocal storm report, Sep 7, 6:40 PM EDT, 1 hour 17 minutes before
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</html>Special weather statement, Sep 7, 6:47 PM EDT, 1 hour 10 minutes before
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</html>Special weather statement, Sep 7, 7:12 PM EDT, 45 minutes before
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</html>Special weather statement, Sep 7, 7:53 PM EDT, 4 minutes before
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</html>The office that day
Everything else NWS Boston/Norton, MA issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Sep 7, 4:39 PM EDT | High Surf Advisory | BOX | Barnstable, Bristol, Dukes, Essex, Nantucket, Norfolk and 1 more | 4 days |
| Sep 7, 4:42 PM EDT | Small Craft Advisory | BOX | 4 days | |
| Sep 7, 5:46 PM EDT | Special Weather Statement | BOX | Middlesex | 59 min |
| Sep 7, 5:59 PM EDT | Severe Thunderstorm Warning | BOX | Essex, Middlesex, Norfolk, Suffolk | 46 min |
| Sep 7, 6:14 PM EDT | Special Weather Statement | BOX | Suffolk | 31 min |
| Sep 7, 6:42 PM EDT | Areal Flood Advisory | BOX | Middlesex, Norfolk, Suffolk | 55 min |
| Sep 7, 7:12 PM EDT | Special Weather Statement | BOX | Worcester | 48 min |
| Sep 7, 7:20 PM EDT | Areal Flood Advisory | BOX | Essex, Middlesex, Norfolk, Suffolk | 100 min |
| Sep 7, 7:34 PM EDT | Severe Thunderstorm Warning | BOX | Franklin, Hampshire, Worcester | 26 min |
| Sep 7, 7:53 PM EDT | Special Weather Statement | BOX | Worcester | 52 min |
Nearby
Areal Flood Advisories in Massachusetts, 2012Every areal flood advisory 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.