Alert archive / Massachusetts / Flash Flood Warnings in 2011

Flash Flood Warning 13, NWS Boston/Norton, MA

October 4, 2011Essex County, Middlesex County, Suffolk County, Massachusetts

NWS Boston/Norton, MA issued this flash flood warning at Oct 4, 2011, 5:52 AM EDT for Essex County, Middlesex County, Suffolk County, Massachusetts. It was in force for 113 min. 20 reports came from inside the area while it was in force.

The area

The outline as issued, with what was reported inside it.

The facts

Issued: Oct 4, 2011, 5:52 AM EDT (09:52 UTC)
Expired: Oct 4, 2011, 7:45 AM EDT
In force: 113 min
Issued by: NWS Boston/Norton, MA
Area: Storm-based polygon
Flood severity: None

Counties Essex County, MA, Middlesex County, MA, Suffolk County, MA

The radar

The Boston radar (KBOX), 72 km from the middle of the area, began a volume at 09:52 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.

What was reported inside it

Time	Report	Where	Remark
Oct 4, 6:00 AM EDT	FLOOD	Peabody, MA	FOSTER STREET AND CROWNINSHIELD STREET CLOSED DUE TO FLOODING
Oct 4, 6:04 AM EDT	FLOOD	Lynnfield, MA	ROUTE 1 SB IN THE LYNNFIELD TUNNEL IS CLOSED DUE TO FLOODING INSIDE THE TUNNEL.
Oct 4, 6:15 AM EDT	FLOOD	Peabody, MA	FOSTER STREET AND CROWNINSHIELD STREET CLOSED DUE TO FLOODING
Oct 4, 6:15 AM EDT	FLOOD	Salem, MA	MARLBORO ROAD CLOSED DUE TO FLOODING
Oct 4, 6:15 AM EDT	FLASH FLOOD	Salem, MA	HIGHLAND AVE CLOSED DUE TO FLOODING. 3 PEOPLE RESCUED FROM VEHICLES
Oct 4, 6:20 AM EDT	FLOOD	Lynn, MA	CHATHAM ROAD AND TRASK LANE CLOSED DUE TO FLOODING
Oct 4, 6:27 AM EDT	FLASH FLOOD	Peabody, MA	TRASK LANE HAS VEHICLES STUCK IN WATER WITH PEOPLE TRAPPED
Oct 4, 6:28 AM EDT	FLOOD	Danvers, MA	6 INCHES OF STANDING WATER ON SUMMER STREET AT ROUTE 62
Oct 4, 6:28 AM EDT	FLOOD	Peabody, MA	PARTS OF ROUTE 128 IMPASSABLE DUE TO FLOODING
Oct 4, 6:38 AM EDT	FLASH FLOOD	Peabody, MA	WALL COLLAPSING AT PEABODY POLICE STATION AND STATION IS TAKING ON WATER. MULTIPLE CARS FLOODED AND PEOPLE TRAPPED ON ROUTE 128 NEAR LOWELL STREET THROUGH ROUTE 114
Oct 4, 6:44 AM EDT	FLASH FLOOD	Peabody, MA	3 CARS STUCK IN FLOOD WATERS ON ROUTE 1 NORTH AT THE UNDERPASS NEAR I-95
Oct 4, 7:00 AM EDT	FLASH FLOOD	Salem, MA	WINTHROP STREET FLOODED WITH A PREGNANT WOMAN IN CAR STUCK IN FLOOD WATERS. TREMONT... SHAMROCK AND BUFFMAN STREETS FLOODED AND IMPASSABLE. JEFFERSON AVE AND CANAL ST FLOODED WITH VEHICLES STUCK IN FLOOD WATERS.
Oct 4, 7:18 AM EDT	FLASH FLOOD	Peabody, MA	ABINGTON AVE... SENECA ROAD AND GARDNER ST FLOODED WITH 3 FT OF WATER AND IMPASSABLE. HOWLEY ST FLOODED AND IMPASSABLE WITH VEHICLES STUCK. TREMONT... HOWLEY... WALLIS AND WALNUT STREETS FLOODED AND IMPASSABLE.
Oct 4, 7:24 AM EDT	FLASH FLOOD	Beverly, MA	FEDERAL STREET RAILROAD UNDERPASS FLOODED WITH CARS STUCK IN FLOOD WATERS
Oct 4, 7:26 AM EDT	FLOOD	Peabody, MA	CAR FLOODED OUT ON RAILROAD AVE. NO OCCUPANTS IN THE CAR.
Oct 4, 7:27 AM EDT	FLOOD	Peabody, MA	LYNN STREET AT GRANITE STREET...SEVERAL HOMES FLOODED.
Oct 4, 7:28 AM EDT	FLOOD	Peabody, MA	CAR STUCK IN FLOOD WATERS ON WALNUT STREET
Oct 4, 7:35 AM EDT	FLASH FLOOD	Beverly, MA	CAR STUCK IN FLOOD WATERS WITH PEOPLE IN IT ON PARK STREET
Oct 4, 7:49 AM EDT	FLOOD	Beverly, MA	8 INCHES OF WATER FLOWING INTO THE CUMMINGS CENTER
Oct 4, 7:52 AM EDT	FLASH FLOOD	Peabody, MA	LAHEY CLINIC HAS 4 TO 6 FEET OF WATER IN THE BASEMENT IN ADDITION TO SEVERAL INCHES OF WATER IN THE LOWER HALLWAYS OF THE CLINIC. OIL COMING OUT OF FLOODED BASEMENT ON LYNNFIELD STREET. WATER RESCUE IN HOME ON TUMELTY STREET.

Local storm reports filed while the alert was in force, from inside its polygon or its counties.

The nearest sounding before it

Chatham, MA (KCHH), launched 00:00Z, 9.9 hours before the alert went out and 129 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: 14 J/kg
Mixed-layer CIN: -18 J/kg
Mixed-layer LCL: 922 m above ground
0-6 km bulk shear: 59 kt
0-1 km storm-relative helicity: 52 m²/s²
0-3 km storm-relative helicity: 88 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.0

Open this sounding in Storm Lab

The text

As transmitted, in the capitals the NWS used until 2016.

491 
WGUS51 KBOX 040952
FFWBOX
MAC009-017-025-041145-
/O.NEW.KBOX.FF.W.0013.111004T0952Z-111004T1145Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/

BULLETIN - EAS ACTIVATION REQUESTED
FLASH FLOOD WARNING
NATIONAL WEATHER SERVICE TAUNTON MA
552 AM EDT TUE OCT 4 2011

THE NATIONAL WEATHER SERVICE IN TAUNTON HAS ISSUED A

* FLASH FLOOD WARNING FOR...
  CENTRAL ESSEX COUNTY IN EASTERN MASSACHUSETTS...
  THIS INCLUDES THE CITIES OF...LYNN...BEVERLY...
  EXTREME NORTHEASTERN SUFFOLK COUNTY IN EASTERN MASSACHUSETTS...
  EAST CENTRAL MIDDLESEX COUNTY IN SOUTHEAST MASSACHUSETTS...

* UNTIL 745 AM EDT

* AT 548 AM EDT...SHOWERS AND THUNDERSTORMS WITH VERY HEAVY RAIN 
WERE MOVING NORTHWEST ACROSS THE WARNING AREA.  RAINFALL RATES OF 1 
TO 2 INCHES PER HOUR WILL RESULT IN SIGNIFICANT URBAN FLOODING.    

FLASH FLOODING OF SMALL STREAMS AND URBAN AREAS IS OCCURRING OR
IMMINENT. THOSE NEAR STREAMS AND CREEKS...OR IN AREAS PRONE TO
FLOODING SHOULD MOVE TO HIGHER GROUND IMMEDIATELY. AVOID FLOODED
ROADS. THE WATER MAY BE TOO DEEP TO ALLOW VEHICLES TO CROSS SAFELY...
OR THE ROADWAY MAY BE UNDERMINED. TURN AROUND...DONT DROWN!

&&

LAT...LON 4272 7100 4255 7082 4254 7084 4254 7085
      4252 7086 4244 7097 4263 7117

$$

KJC

1 follow-up statement

908 
WGUS71 KBOX 041146
FFSBOX

FLASH FLOOD STATEMENT
NATIONAL WEATHER SERVICE TAUNTON MA
746 AM EDT TUE OCT 4 2011

MAC009-017-025-041153-
/O.EXP.KBOX.FF.W.0013.000000T0000Z-111004T1145Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
MIDDLESEX MA-ESSEX MA-SUFFOLK MA-
746 AM EDT TUE OCT 4 2011

...THE FLASH FLOOD WARNING WILL EXPIRE AT 745 AM EDT FOR EXTREME
NORTHEASTERN SUFFOLK...CENTRAL ESSEX AND EAST CENTRAL MIDDLESEX
COUNTIES...

VERY HEAVY RAINFALL OF 3 TO 5 INCHES IN A 2 HOUR PERIOD CAUSED 
SIGNIFICANT FLOODING ACROSS ESSEX COUNTY.  THE HEAVIEST RAINFALL HAS 
DIMINISHED AND SHIFTED NORTHEAST OF THE WARNING AREA...SO THIS 
WARNING WILL BE ALLOWED TO EXPIRE.  

LAT...LON 4272 7100 4255 7082 4254 7084 4254 7085
      4252 7086 4244 7097 4263 7117

$$

KJC

The office that day

Everything else NWS Boston/Norton, MA issued on the same UTC day.

Issued	Product	Office	Counties	Lasted
Oct 4, 3:48 AM EDT	Small Craft Advisory	BOX		48 hr
Oct 4, 5:00 AM EDT	Special Marine Warning	BOX		30 min
Oct 4, 5:35 AM EDT	Special Weather Statement	BOX	Essex	25 min
Oct 4, 7:56 AM EDT	Areal Flood Advisory	BOX	Essex	6 hr
Oct 4, 9:43 AM EDT	Areal Flood Advisory	BOX	Worcester	3 hr
Oct 4, 1:44 PM EDT	Areal Flood Advisory	BOX	Essex	3 hr
Oct 4, 4:29 PM EDT	Gale Watch	BOX		11 hr

Nearby

Flash Flood Warnings in Massachusetts, 2011 Every flash flood warning 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; local storm reports from the same archive; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.