Alert archive / Massachusetts / Flash Flood Warnings in 2018
Flash Flood Warning 29, NWS Boston/Norton, MA
NWS Boston/Norton, MA issued this flash flood warning at Sep 18, 2018, 10:17 AM EDT for 5 counties in Massachusetts. It was in force for 4 hr. 35 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
- Sep 18, 2018, 10:17 AM EDT (14:17 UTC)
- Expired
- Sep 18, 2018, 2:15 PM EDT
- In force
- 4 hr
- Issued by
- NWS Boston/Norton, MA
- Area
- Storm-based polygon
- Flood severity
- None
Counties Essex County, MA, Middlesex County, MA, Norfolk County, MA, Suffolk County, MA, Worcester County, MA
The radar
The Boston radar (KBOX), 73 km from the middle of the area, began a volume at 14:19 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 |
|---|---|---|---|
| Sep 18, 10:20 AM EDT | HEAVY RAIN 2 | Dracut, MA | |
| Sep 18, 10:21 AM EDT | HEAVY RAIN 3.13 | Pepperell, MA | |
| Sep 18, 10:23 AM EDT | FLASH FLOOD | Worcester, MA | BRIDGE IS FLOODING OUT AT ROUTE 20 AT GRAFTON STREET. |
| Sep 18, 10:32 AM EDT | FLASH FLOOD | Shrewsbury, MA | MAPLE AVE AT ROUTE 9 FLOODED AND IMPASSABLE |
| Sep 18, 10:41 AM EDT | FLASH FLOOD | Andover, MA | BEACON STREET IN FRONT OF WEST ELEMENTARY SCHOOL FLOODED |
| Sep 18, 10:42 AM EDT | HEAVY RAIN 1.58 | Lexington, MA | |
| Sep 18, 10:43 AM EDT | FLASH FLOOD | Lawrence, MA | ANDOVER AT CLIFTON STREET INTERSECTION FLOODED AND IMPASSABLE |
| Sep 18, 10:45 AM EDT | FLASH FLOOD | Sudbury, MA | ROUTE 20 AT MASSASOIT NEAR MILLBROOK ROAD IS COMPLETELY FLOODED AND IMPASSABLE |
| Sep 18, 10:53 AM EDT | FLASH FLOOD | Marlborough, MA | CAR STUCK IN FLOOD WATERS AT FARM ROAD AT CLARK DRIVE |
| Sep 18, 10:55 AM EDT | FLASH FLOOD | Lawrence, MA | MARKET STREET FROM MERRIMACK TO PARKER STREET IN THE AREA OF THE UNDERPASS CLOSED DUE TO FLOODING |
| Sep 18, 10:59 AM EDT | FLASH FLOOD | Newton, MA | SECTION OF BEACON STREET IN THE AREA OF 85 BEACON STREET CLOSED DUE TO FLOODING |
| Sep 18, 11:00 AM EDT | FLASH FLOOD | Danvers, MA | SIGNIFICANT STREET FLOODING ON ROUTE 62 AT THE MIDDLETON/DANVERS LINE ABOUT 1 FOOT DEEP |
| Sep 18, 11:00 AM EDT | FLASH FLOOD | Waltham, MA | AREA OF 840 WINTER STREET IS FLOODED AND IMPASSABLE |
| Sep 18, 11:03 AM EDT | FLASH FLOOD | Lynnfield, MA | CAR STUCK IN FLOOD WATERS AT MAIN STREET AT LOWELL STREET |
| Sep 18, 11:03 AM EDT | FLASH FLOOD | Waltham, MA | LEXINGTON STREET PRIOR TO RIVER FOREST FLOODED AND IMPASSABLE |
| Sep 18, 11:03 AM EDT | FLASH FLOOD | Waltham, MA | WINTER STREET BY DUFFYS POND IS FLOODED AND IMPASSABLE. CAR STUCK IN FLOOD WATERS. |
| Sep 18, 11:05 AM EDT | FLASH FLOOD | Waltham, MA | CAR STUCK IN FLOOD WATERS UNDER THE RAILROAD UNDERPASS ON PROSPECT STREET. WATER UP TO WHEEL WELL. |
| Sep 18, 11:06 AM EDT | FLASH FLOOD | Danvers, MA | SECTION OF ROUTE 114 IN BOTH DIRECTIONS ARE FLOODED AND IMPASSABLE |
| Sep 18, 11:07 AM EDT | FLASH FLOOD | Arlington, MA | HAMILTON ROAD AT LAKE HILL FLOODED AND IMPASSABLE |
| Sep 18, 11:08 AM EDT | FLASH FLOOD | Hamilton, MA | WALNUT STREET AND RAILROAD AVE FLOODED AND IMPASSABLE |
| Sep 18, 11:08 AM EDT | FLASH FLOOD | Watertown, MA | ROAD FLOODED AT 103 SUMMER STREET |
| Sep 18, 11:40 AM EDT | FLASH FLOOD | Chelsea, MA | VERNON ROAD CLOSED DUE TO FLOODING |
| Sep 18, 11:40 AM EDT | FLASH FLOOD | Malden, MA | ROUTE 60 EASTERN AVE FLOODED AND IMPASSABLE. ROAD CLOSED. |
| Sep 18, 11:40 AM EDT | FLASH FLOOD | Middleton, MA | BELLEVIEW AVE GARAGE FLOODED |
| Sep 18, 11:44 AM EDT | FLASH FLOOD | Chelsea, MA | RIGHT LANE OF ROUTE 16 IS FLOODED AND IMPASSABLE BY EAGLE HEIGHTS ACADEMY |
| Sep 18, 11:57 AM EDT | HEAVY RAIN 2.64 | Westborough, MA | |
| Sep 18, 12:00 PM EDT | FLASH FLOOD | Lynn, MA | BENNETT STREET FLOODED AND IMPASSABLE WITH THREE TO FOUR FEET OF STANDING WATER |
| Sep 18, 12:00 PM EDT | FLASH FLOOD | Middleton, MA | VILLAGE ROAD FLOODED AND IMPASSABLE |
| Sep 18, 12:00 PM EDT | FLASH FLOOD | Revere, MA | ROUTE 1 NORTHBOUND NEAR ROUTE 16 EXIT IS FLOODED |
| Sep 18, 12:56 PM EDT | FLASH FLOOD | Cambridge, MA | LONGFELLOW BRIDGE AND MEMORIAL DRIVE CLOSED IN BOTH DIRECTIONS DUE TO FLOODING |
| Sep 18, 1:04 PM EDT | HEAVY RAIN 3.41 | Pepperell, MA | |
| Sep 18, 1:30 PM EDT | HEAVY RAIN 1.9 | Wakefield, MA | |
| Sep 18, 1:36 PM EDT | FLASH FLOOD | Shrewsbury, MA | FLORAL STREET FLOODED AND IMPASSABLE |
| Sep 18, 2:10 PM EDT | HEAVY RAIN 1.5 | Salem, MA | |
| Sep 18, 2:20 PM EDT | HEAVY RAIN 2.47 | Chelmsford, MA |
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 12:00Z, 2.3 hours before the alert went out and 138 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
- 165 J/kg
- Mixed-layer CIN
- -16 J/kg
- Mixed-layer LCL
- 648 m above ground
- 0-6 km bulk shear
- 35 kt
- 0-1 km storm-relative helicity
- 124 m²/s²
- 0-3 km storm-relative helicity
- 148 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.4
The text
As transmitted.
275
WGUS51 KBOX 181417
FFWBOX
MAC009-017-021-025-027-181815-
/O.NEW.KBOX.FF.W.0029.180918T1417Z-180918T1815Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
BULLETIN - EAS ACTIVATION REQUESTED
Flash Flood Warning
National Weather Service Boston/Norton MA
1017 AM EDT TUE SEP 18 2018
The National Weather Service in Boston/Norton has issued a
* Flash Flood Warning for...
Southeastern Worcester County in central Massachusetts...
North central Norfolk County in eastern Massachusetts...
Suffolk County in eastern Massachusetts...
Essex County in northeastern Massachusetts...
Middlesex County in northeastern Massachusetts...
* Until 215 PM EDT.
* At 1015 AM EDT Doppler radar indicated a swath of heavy rain
moving across the warned area. Rainfall rates of up to 1 to 3
inches per hour were occurring. Flash flooding is expected to
begin shortly. This includes rapid ponding of water in urban poor
drainage areas.
* Some locations that will experience flooding include...
Boston, Worcester, Lowell, Cambridge, Quincy, Lynn, Nashua, Newton,
Lawrence, Somerville, Framingham, Haverhill, Waltham, Malden,
Brookline, Medford, Revere, Peabody, Methuen and Arlington.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
A Flash Flood Warning means that flooding will occur quickly, and
could be life threatening for those who try to drive through flooded
roads or underpasses. Find alternate routes. Those near small streams
need to get to higher ground immediately.
&&
LAT...LON 4287 7082 4281 7087 4280 7078 4269 7074
4270 7062 4265 7056 4241 7090 4242 7096
4235 7094 4235 7087 4229 7097 4216 7188
4233 7194 4240 7162 4271 7163 4270 7129
4274 7118 4281 7116 4281 7107 4289 7091
$$
NMBThe office that day
Everything else NWS Boston/Norton, MA issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Sep 18, 7:54 AM EDT | Special Weather Statement | BOX | Franklin, Hampshire | 81 min |
| Sep 18, 8:21 AM EDT | Special Weather Statement | BOX | Norfolk | 54 min |
| Sep 18, 8:52 AM EDT | Flash Flood Warning | BOX | Franklin, Hampshire, Middlesex, Worcester | 4 hr |
| Sep 18, 9:09 AM EDT | Special Weather Statement | BOX | Hampden, Worcester | 36 min |
| Sep 18, 9:32 AM EDT | Special Weather Statement | BOX | Essex, Middlesex | 88 min |
| Sep 18, 9:50 AM EDT | Special Weather Statement | BOX | Hampden, Worcester | 85 min |
| Sep 18, 10:12 AM EDT | Special Weather Statement | BOX | Essex | 48 min |
| Sep 18, 10:34 AM EDT | Special Weather Statement | BOX | Essex | 41 min |
| Sep 18, 10:45 AM EDT | Severe Thunderstorm Warning | BOX | Essex, Middlesex | 30 min |
| Sep 18, 10:56 AM EDT | Special Marine Warning | BOX | 64 min | |
| Sep 18, 10:58 AM EDT | Flash Flood Warning | BOX | Hampden, Hampshire, Worcester | 4 hr |
| Sep 18, 11:00 AM EDT | Tornado Warning | BOX | Essex | 15 min |
| Sep 18, 11:07 AM EDT | River Flood Warning | BOX | Worcester | 9 hr |
| Sep 18, 11:09 AM EDT | Special Marine Warning | BOX | 66 min | |
| Sep 18, 11:23 AM EDT | Flash Flood Warning | BOX | Bristol, Middlesex, Norfolk, Plymouth, Suffolk, Worcester | 4 hr |
| Sep 18, 11:58 AM EDT | Special Marine Warning | BOX | 62 min | |
| Sep 18, 12:20 PM EDT | Special Marine Warning | BOX | 25 min | |
| Sep 18, 12:32 PM EDT | Areal Flood Warning | BOX | Franklin, Hampshire, Middlesex, Worcester | 4 hr |
| Sep 18, 12:49 PM EDT | Special Marine Warning | BOX | 86 min | |
| Sep 18, 12:58 PM EDT | Special Weather Statement | BOX | Plymouth | 62 min |
| Sep 18, 1:10 PM EDT | Special Marine Warning | BOX | 80 min | |
| Sep 18, 1:31 PM EDT | Flash Flood Warning | BOX | Bristol, Plymouth | 4 hr |
| Sep 18, 2:01 PM EDT | Areal Flood Warning | BOX | Essex, Middlesex, Norfolk, Suffolk, Worcester | 4 hr |
| Sep 18, 2:07 PM EDT | Special Weather Statement | BOX | Bristol, Plymouth | 38 min |
| Sep 18, 2:27 PM EDT | Severe Thunderstorm Warning | BOX | Barnstable, Plymouth | 33 min |
| Sep 18, 2:31 PM EDT | Special Marine Warning | BOX | 44 min | |
| Sep 18, 2:59 PM EDT | Special Marine Warning | BOX | 46 min | |
| Sep 18, 3:04 PM EDT | Severe Thunderstorm Warning | BOX | Barnstable | 41 min |
| Sep 18, 3:05 PM EDT | Flash Flood Warning | BOX | Barnstable | 115 min |
| Sep 18, 3:14 PM EDT | Areal Flood Warning | BOX | Bristol, Middlesex, Norfolk, Plymouth, Suffolk, Worcester | 3 hr |
| Sep 18, 3:22 PM EDT | Special Marine Warning | BOX | 53 min | |
| Sep 18, 3:59 PM EDT | Special Marine Warning | BOX | 46 min | |
| Sep 18, 4:01 PM EDT | Small Craft Advisory | BOX | 60 hr |
Nearby
Flash Flood Warnings in Massachusetts, 2018Every flash flood warning in 2018
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.