Alert archive / Massachusetts / Flash Flood Warnings in 2018
Flash Flood Warning 9, NWS Boston/Norton, MA
NWS Boston/Norton, MA issued this flash flood warning at Jul 17, 2018, 3:10 PM EDT for Hampden County, Hampshire County, Worcester County, Massachusetts; Capitol Planning Region, Connecticut. It was in force for 2 hr. 7 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
- Jul 17, 2018, 3:10 PM EDT (19:10 UTC)
- Expired
- Jul 17, 2018, 5:15 PM EDT
- In force
- 2 hr
- Issued by
- NWS Boston/Norton, MA
- Area
- Storm-based polygon
- Flood severity
- None
Counties Capitol Planning Region, CT, Hampden County, MA, Hampshire County, MA, Worcester County, MA
The radar
The Boston radar (KBOX), 99 km from the middle of the area, began a volume at 19:14 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 |
|---|---|---|---|
| Jul 17, 3:10 PM EDT | FLOOD | Chicopee, MA | MEETING HOUSE ROAD FLOODED AND IMPASSABLE |
| Jul 17, 3:10 PM EDT | FLOOD | Westfield, MA | CAR STUCK IN FLOOD WATERS AND ROAD CLOSED ON ROUTE 20 AT THE INTERSECTION OF EAST MOUNTAIN ROAD |
| Jul 17, 3:10 PM EDT | FLOOD | Westfield, MA | CAR STUCK IN FLOOD WATERS AT RTE 20 AND MOUNTAIN ROAD INTERSEXTION. ROAD IS CLOSED |
| Jul 17, 3:10 PM EDT | FLASH FLOOD | Chicopee, MA | MEETING HOUSE ROAD FLOODED AND IMPASSABLE |
| Jul 17, 3:10 PM EDT | FLASH FLOOD | Westfield, MA | CAR STUCK IN FLOOD WATERS AND ROAD CLOSED ON ROUTE 20 AT THE INTERSECTION OF EAST MOUNTAIN ROAD |
| Jul 17, 3:10 PM EDT | FLASH FLOOD | Westfield, MA | CAR STUCK IN FLOOD WATERS AT RTE 20 AND MOUNTAIN ROAD INTERSEXTION. ROAD IS CLOSED |
| Jul 17, 3:31 PM EDT | FLOOD | Somers, CT | STREET FLOODING ON RTE 190 |
Local storm reports filed while the alert was in force, from inside its polygon or its counties.
The nearest sounding before it
Albany, NY (KALY), launched 12:00Z, 7.2 hours before the alert went out and 139 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
- 666 J/kg
- Mixed-layer CIN
- -80 J/kg
- Mixed-layer LCL
- 862 m above ground
- 0-6 km bulk shear
- 26 kt
- 0-1 km storm-relative helicity
- 82 m²/s²
- 0-3 km storm-relative helicity
- 122 m²/s²
- Significant tornado parameter
- 0.2
- Supercell composite
- 1.0
The text
As transmitted.
266 WGUS51 KBOX 171910 FFWBOX CTC003-013-MAC013-015-027-172115- /O.NEW.KBOX.FF.W.0009.180717T1910Z-180717T2115Z/ /00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/ BULLETIN - EAS ACTIVATION REQUESTED Flash Flood Warning National Weather Service Boston/Norton MA 310 PM EDT TUE JUL 17 2018 The National Weather Service in Boston/Norton has issued a * Flash Flood Warning for... Northern Tolland County in northern Connecticut... Central Hartford County in northern Connecticut... Southwestern Worcester County in central Massachusetts... Southeastern Hampshire County in western Massachusetts... Hampden County in western Massachusetts... * Until 515 PM EDT. * At 308 PM EDT )Doppler radar indicated thunderstorms producing heavy rain across the warned area. Up to four and a half inches of rain have already fallen based on Spotter reports. Flash flooding is expected to begin shortly. * Some locations that will experience flooding include... Springfield, Hartford, New Britain, West Hartford, Manchester, Chicopee, East Hartford, Enfield, Westfield, Holyoke, Glastonbury, Newington, Vernon, Windsor, Agawam, West Springfield, Wethersfield, South Windsor, Farmington and Simsbury. PRECAUTIONARY/PREPAREDNESS ACTIONS... Turn around don't drown when encountering flooded roads. Most flood deaths occur in vehicles. 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 4231 7204 4213 7195 4158 7280 4225 7278 $$ AED
The office that day
Everything else NWS Boston/Norton, MA issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jul 16, 8:50 PM EDT | Special Weather Statement | BOX | Franklin | 40 min |
| Jul 16, 8:53 PM EDT | Special Weather Statement | BOX | Franklin | 37 min |
| Jul 16, 9:17 PM EDT | Areal Flood Advisory | BOX | Franklin, Worcester | 77 min |
| Jul 17, 3:58 AM EDT | Heat Advisory | BOX | Bristol, Essex, Middlesex, Norfolk, Worcester | 12 hr |
| Jul 17, 4:15 AM EDT | Flash Flood Watch | BOX | Bristol, Essex, Franklin, Hampden, Hampshire, Middlesex and 3 more | 15 hr |
| Jul 17, 10:46 AM EDT | Special Weather Statement | BOX | Franklin | 44 min |
| Jul 17, 11:04 AM EDT | Flash Flood Warning | BOX | Franklin, Hampshire | 3 hr |
| Jul 17, 11:28 AM EDT | Special Weather Statement | BOX | Franklin | 47 min |
| Jul 17, 11:36 AM EDT | Severe Thunderstorm Warning | BOX | Franklin, Worcester | 54 min |
| Jul 17, 11:39 AM EDT | Severe Thunderstorm Warning | BOX | Franklin, Hampshire | 51 min |
| Jul 17, 11:46 AM EDT | Flash Flood Warning | BOX | Franklin, Hampden, Hampshire | 3 hr |
| Jul 17, 12:23 PM EDT | Special Weather Statement | BOX | Middlesex | 37 min |
| Jul 17, 12:30 PM EDT | Flash Flood Warning | BOX | Franklin, Hampden, Hampshire, Middlesex, Worcester | 2 hr |
| Jul 17, 12:33 PM EDT | Special Weather Statement | BOX | Worcester | 42 min |
| Jul 17, 12:45 PM EDT | Severe Thunderstorm Warning | BOX | Franklin, Hampshire, Worcester | 45 min |
| Jul 17, 12:57 PM EDT | Severe Thunderstorm Warning | BOX | Middlesex, Worcester | 48 min |
| Jul 17, 1:08 PM EDT | Flash Flood Warning | BOX | Essex, Middlesex, Norfolk, Plymouth, Suffolk, Worcester | 112 min |
| Jul 17, 1:15 PM EDT | Severe Thunderstorm Warning | BOX | Essex, Middlesex | 60 min |
| Jul 17, 1:18 PM EDT | Special Marine Warning | BOX | 57 min | |
| Jul 17, 1:33 PM EDT | Severe Thunderstorm Warning | BOX | Essex, Middlesex, Suffolk | 45 min |
| Jul 17, 1:41 PM EDT | Special Marine Warning | BOX | 64 min | |
| Jul 17, 1:59 PM EDT | Severe Thunderstorm Warning | BOX | Franklin, Hampden, Hampshire, Worcester | 46 min |
| Jul 17, 2:22 PM EDT | Areal Flood Warning | BOX | Franklin, Hampden, Hampshire, Worcester | 3 hr |
| Jul 17, 3:03 PM EDT | Areal Flood Warning | BOX | Essex, Middlesex, Norfolk, Suffolk, Worcester | 3 hr |
| Jul 17, 3:27 PM EDT | Flash Flood Warning | BOX | Worcester | 2 hr |
| Jul 17, 3:27 PM EDT | Special Weather Statement | BOX | Worcester | 48 min |
| Jul 17, 3:43 PM EDT | Special Weather Statement | BOX | Middlesex | 47 min |
| Jul 17, 4:09 PM EDT | Areal Flood Warning | BOX | Norfolk, Worcester | 2 hr |
| Jul 17, 4:23 PM EDT | Severe Thunderstorm Warning | BOX | Worcester | 52 min |
| Jul 17, 4:32 PM EDT | Special Weather Statement | BOX | Middlesex | 58 min |
| Jul 17, 5:06 PM EDT | Severe Thunderstorm Warning | BOX | Bristol, Norfolk, Worcester | 39 min |
| Jul 17, 5:08 PM EDT | Special Weather Statement | BOX | Norfolk, Suffolk | 52 min |
| Jul 17, 5:20 PM EDT | Flash Flood Warning | BOX | Middlesex, Norfolk, Suffolk | 60 min |
| Jul 17, 5:47 PM EDT | Severe Thunderstorm Warning | BOX | Bristol, Norfolk, Plymouth | 43 min |
| Jul 17, 5:51 PM EDT | Special Marine Warning | BOX | 54 min | |
| Jul 17, 5:58 PM EDT | Special Marine Warning | BOX | 92 min | |
| Jul 17, 6:35 PM EDT | Special Marine Warning | BOX | 40 min | |
| Jul 17, 6:41 PM EDT | Special Marine Warning | BOX | 64 min | |
| Jul 17, 6:58 PM EDT | Special Marine Warning | BOX | 27 min | |
| Jul 17, 7:12 PM EDT | Special Marine Warning | BOX | 48 min | |
| Jul 17, 7:23 PM EDT | Special Marine Warning | BOX | 67 min | |
| Jul 17, 7:41 PM EDT | Special Marine Warning | BOX | 49 min | |
| Jul 17, 2:02 PM EDT | Severe Thunderstorm Warning | BOX | Capitol Planning Region | 35 min |
| Jul 17, 2:34 PM EDT | Special Weather Statement | BOX | 41 min | |
| Jul 17, 2:41 PM EDT | Severe Thunderstorm Warning | BOX | Capitol Planning Region | 64 min |
| Jul 17, 3:33 PM EDT | Severe Thunderstorm Warning | BOX | Northeastern Connecticut Planning Region | 42 min |
| Jul 17, 3:59 PM EDT | Tornado Warning | BOX | Northeastern Connecticut Planning Region | 31 min |
Nearby
Flash Flood Warnings in Massachusetts, 2018Flash Flood Warnings in Connecticut, 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.