Alert archive / Massachusetts / Flash Flood Warnings in 2018
Flash Flood Warning 31, NWS Boston/Norton, MA
NWS Boston/Norton, MA issued this flash flood warning at Sep 18, 2018, 11:23 AM EDT for 6 counties in Massachusetts; Northeastern Connecticut Planning Region, Connecticut; Providence County, Rhode Island. It was in force for 4 hr. 16 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, 11:23 AM EDT (15:23 UTC)
- Expired
- Sep 18, 2018, 3:15 PM EDT
- In force
- 4 hr
- Issued by
- NWS Boston/Norton, MA
- Area
- Storm-based polygon
- Flood severity
- None
Counties Northeastern Connecticut Planning Region, CT, Bristol County, MA, Middlesex County, MA, Norfolk County, MA, Plymouth County, MA, Suffolk County, MA, Worcester County, MA, Providence County, RI
The radar
The Boston radar (KBOX), 43 km from the middle of the area, began a volume at 15:27 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, 11:40 AM EDT | FLASH FLOOD | Uxbridge, MA | ROUTE 122 AT HAZEL STREET FLOODED |
| Sep 18, 11:44 AM EDT | FLASH FLOOD | Bellingham, MA | MONIQUE DRIVE FLOODED AND IMPASSABLE |
| Sep 18, 11:44 AM EDT | FLASH FLOOD | Milford, MA | NORTH BOW STREET FLOODED AND IMPASSABLE |
| Sep 18, 11:50 AM EDT | FLASH FLOOD | Quincy, MA | ARTERY AT GREENLEAF STREET CLOSED DUE TO FLOODING |
| Sep 18, 12:18 PM EDT | FLASH FLOOD | Weymouth, MA | GREENVILLE AVE IS FLOODED AND IMPASSABLE |
| Sep 18, 12:35 PM EDT | FLASH FLOOD | Bellingham, MA | CAROLINE DRIVE IS FLOODED AND IMPASSABLE. WATER UP TO CAR BUMPER. |
| Sep 18, 12:38 PM EDT | FLASH FLOOD | Norwood, MA | ROUTE 1 AT PLEASANT STREET IS CLOSED DUE TO FLOODING |
| Sep 18, 12:48 PM EDT | FLASH FLOOD | Norfolk, MA | HOLBROOK STREET IN AREA OF ROUTE 115 FLOODED AND IMPASSABLE |
| Sep 18, 1:08 PM EDT | FLASH FLOOD | Randolph, MA | HIGHLAND AVE, WARREN STREET, AND DIAUTO DRIVE FLOODED AND IMPASSABLE |
| Sep 18, 1:38 PM EDT | FLASH FLOOD | Norfolk, MA | DEDHAM STREET BY VILLAGE GREEN NURSERIES FLOODED AND IMPASSABLE |
| Sep 18, 1:42 PM EDT | FLASH FLOOD | Cohasset, MA | ROUTE 3A SOUTHBOUND FLOODED WITH TWO FEET OF WATER |
| Sep 18, 1:42 PM EDT | FLASH FLOOD | Franklin, MA | FLOODING INTO THE LOBBY AT DEAN COLLEGE |
| Sep 18, 1:48 PM EDT | FLASH FLOOD | Brockton, MA | SECTIONS OF OAK HILL WAY ARE FLOODED AND IMPASSABLE |
| Sep 18, 2:03 PM EDT | FLASH FLOOD | Norwood, MA | DEAN STREET AT KERRY PLACE FLOODED AND IMPASSABLE |
| Sep 18, 2:29 PM EDT | FLASH FLOOD | Burrillville, RI | HOUSE ON WALLUM LAKE ROAD FLOODING |
| Sep 18, 2:42 PM EDT | HEAVY RAIN 1.16 | East Killingly, CT |
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, 3.4 hours before the alert went out and 144 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.
413
WGUS51 KBOX 181523
FFWBOX
CTC013-015-MAC005-017-021-023-025-027-RIC007-181915-
/O.NEW.KBOX.FF.W.0031.180918T1523Z-180918T1915Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
BULLETIN - EAS ACTIVATION REQUESTED
Flash Flood Warning
National Weather Service Boston/Norton MA
1123 AM EDT TUE SEP 18 2018
The National Weather Service in Boston/Norton has issued a
* Flash Flood Warning for...
Windham County in northern Connecticut...
Northeastern Tolland County in northern Connecticut...
Southeastern Worcester County in central Massachusetts...
Norfolk County in eastern Massachusetts...
Southern Suffolk County in eastern Massachusetts...
South central Middlesex County in northeastern Massachusetts...
Northern Plymouth County in southeastern Massachusetts...
Northwestern Bristol County in southeastern Massachusetts...
Providence County in Rhode Island...
* Until 315 PM EDT.
* At 1120 AM EDT Doppler radar indicated showers and thunderstorms
producing very heavy rain within the warned area. Flash flooding
is expected to begin shortly.
* As of 1120 AM, the heaviest rainfall extended from extreme
northeast Connecticut into far northwest Rhode Island,
northeastward into the Boston corridor. Rainfall rates in this
area were as high as 2 to 5 inches per hour. This band may shift
to the south over the next couple of hours.
* Some locations that will experience flooding include...
Boston, Brockton, Quincy, Pawtucket, Taunton, Weymouth, Woonsocket,
Braintree, Cumberland, Randolph, North Providence, Franklin,
Johnston, North Attleborough, Norwood, Milford, Milton, Stoughton,
Bridgewater and Windham.
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 4172 7224 4202 7226 4202 7172 4218 7174
4229 7096 4234 7088 4205 7065 4168 7220
$$
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, 10:17 AM EDT | Flash Flood Warning | BOX | Essex, Middlesex, Norfolk, Suffolk, Worcester | 4 hr |
| 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, 11:58 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 | |
| Sep 18, 12:36 PM EDT | Special Weather Statement | BOX | 39 min | |
| Sep 18, 11:22 AM EDT | Special Weather Statement | BOX | Providence | 53 min |
| Sep 18, 12:07 PM EDT | Special Weather Statement | BOX | Providence | 23 min |
Nearby
Flash Flood Warnings in Massachusetts, 2018Flash Flood Warnings in Connecticut, 2018Flash Flood Warnings in Rhode Island, 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.