Alert archive / Massachusetts / Flash Flood Watches in 2021
Flash Flood Watch 1, NWS Boston/Norton, MA
NWS Boston/Norton, MA issued this flash flood watch at Jun 8, 2021, 12:54 PM EDT for Capitol Planning Region, Connecticut; 5 counties in Massachusetts. It was in force for 8 hr.
The area
The counties it named.
The facts
- Issued
- Jun 8, 2021, 12:54 PM EDT (16:54 UTC)
- Expired
- Jun 8, 2021, 9:22 PM EDT
- In force
- 8 hr
- Issued by
- NWS Boston/Norton, MA
- Flood severity
- None
Counties Capitol Planning Region, CT, Franklin County, MA, Hampden County, MA, Hampshire County, MA, Middlesex County, MA, Worcester County, MA
The radar
The Boston radar (KBOX), 102 km from the middle of the area, began a volume at 16:54 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
Albany, NY (KALY), launched 12:00Z, 4.9 hours before the alert went out and 134 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
- 289 J/kg
- Mixed-layer CIN
- -113 J/kg
- Mixed-layer LCL
- 1170 m above ground
- 0-6 km bulk shear
- 18 kt
- 0-1 km storm-relative helicity
- 7 m²/s²
- 0-3 km storm-relative helicity
- 40 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- -0.1
The text
As transmitted.
794 WGUS61 KBOX 081654 FFABOX URGENT - IMMEDIATE BROADCAST REQUESTED Flood Watch National Weather Service Boston/Norton MA 1254 PM EDT Tue Jun 8 2021 CTZ002-003-MAZ002>004-008>012-026-090100- /O.NEW.KBOX.FF.A.0001.210608T1654Z-210609T0200Z/ /00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/ Hartford CT-Tolland CT-Western Franklin MA-Eastern Franklin MA- Northern Worcester MA-Western Hampshire MA-Western Hampden MA- Eastern Hampshire MA-Eastern Hampden MA-Southern Worcester MA- Northern Middlesex MA- Including the cities of Milford, Fitchburg, Greenfield, Union, Northampton, Worcester, Charlemont, Vernon, Amherst, Hartford, Barre, Ayer, Orange, Chesterfield, Windsor Locks, Springfield, and Blandford 1254 PM EDT Tue Jun 8 2021 ...FLASH FLOOD WATCH IN EFFECT UNTIL 10 PM EDT THIS EVENING... The National Weather Service in Norton has issued a * Flash Flood Watch for portions of northern Connecticut and Massachusetts, including the following areas, in northern Connecticut, Hartford CT and Tolland CT. In Massachusetts, Eastern Franklin MA, Eastern Hampden MA, Eastern Hampshire MA, Northern Middlesex MA, Northern Worcester MA, Southern Worcester MA, Western Franklin MA, Western Hampden MA and Western Hampshire MA. * Until 10 PM EDT this evening * Scattered thunderstorms will continue to develop across the region this afternoon into early this evening. Any thunderstorm that develops will be capable of producing localized 2 to 4 inch rainfall amounts in just one hour. This will result in the potential for localized flash flooding. * Do not drive through flooded roadways. PRECAUTIONARY/PREPAREDNESS ACTIONS... Do not enter or cross flowing water or water of unknown depth. && $$ HF
1 follow-up statement
422 WGUS61 KBOX 090122 FFABOX Flood Watch National Weather Service Boston/Norton MA 922 PM EDT Tue Jun 8 2021 CTZ002-003-MAZ002>004-008>012-026-090230- /O.CAN.KBOX.FF.A.0001.000000T0000Z-210609T0200Z/ /00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/ Hartford CT-Tolland CT-Western Franklin MA-Eastern Franklin MA- Northern Worcester MA-Western Hampshire MA-Western Hampden MA- Eastern Hampshire MA-Eastern Hampden MA-Southern Worcester MA- Northern Middlesex MA- Including the cities of Milford, Fitchburg, Greenfield, Union, Northampton, Worcester, Charlemont, Vernon, Amherst, Hartford, Barre, Ayer, Orange, Chesterfield, Windsor Locks, Springfield, and Blandford 922 PM EDT Tue Jun 8 2021 ...FLASH FLOOD WATCH IS CANCELLED... The Flash Flood Watch for portions of northern Connecticut and Massachusetts, including the following areas, in northern Connecticut, Hartford and Tolland Counties. In Massachusetts, Franklin, Hampden, Hampshire, Northern Middlesex MA, and Worcester Counties has been cancelled. Flooding is no longer expected to pose a threat. Please continue to heed remaining road closures. $$ Belk
The office that day
Everything else NWS Boston/Norton, MA issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jun 8, 12:45 PM EDT | Special Weather Statement | BOX | 45 min | |
| Jun 8, 2:10 PM EDT | Special Weather Statement | BOX | 50 min | |
| Jun 8, 2:29 PM EDT | Severe Thunderstorm Warning | BOX | Capitol Planning Region | 61 min |
| Jun 8, 2:56 PM EDT | Severe Thunderstorm Warning | BOX | Capitol Planning Region | 43 min |
| Jun 8, 3:24 PM EDT | Special Weather Statement | BOX | 51 min | |
| Jun 8, 3:28 PM EDT | Special Weather Statement | BOX | 47 min | |
| Jun 8, 4:13 PM EDT | Special Weather Statement | BOX | 47 min | |
| Jun 8, 12:35 PM EDT | Special Weather Statement | BOX | Hampshire | 40 min |
| Jun 8, 1:02 PM EDT | Flash Flood Warning | BOX | Hampshire | 55 min |
| Jun 8, 1:13 PM EDT | Special Weather Statement | BOX | Hampden | 47 min |
| Jun 8, 1:34 PM EDT | Severe Thunderstorm Warning | BOX | Hampden, Hampshire | 41 min |
| Jun 8, 1:39 PM EDT | Flash Flood Warning | BOX | Hampden, Hampshire | 67 min |
| Jun 8, 2:40 PM EDT | Special Weather Statement | BOX | Hampshire | 50 min |
| Jun 8, 3:09 PM EDT | Special Weather Statement | BOX | Worcester | 51 min |
| Jun 8, 3:12 PM EDT | Special Weather Statement | BOX | Essex | 48 min |
| Jun 8, 3:32 PM EDT | Special Marine Warning | BOX | 43 min | |
| Jun 8, 3:37 PM EDT | Special Weather Statement | BOX | Hampshire | 38 min |
| Jun 8, 3:42 PM EDT | Special Weather Statement | BOX | Essex | 48 min |
| Jun 8, 3:51 PM EDT | Special Weather Statement | BOX | Hampshire | 39 min |
| Jun 8, 3:52 PM EDT | Special Marine Warning | BOX | 53 min | |
| Jun 8, 4:02 PM EDT | Special Weather Statement | BOX | Norfolk | 43 min |
| Jun 8, 4:04 PM EDT | Special Weather Statement | BOX | Hampshire | 41 min |
| Jun 8, 4:13 PM EDT | Special Weather Statement | BOX | Essex | 47 min |
| Jun 8, 4:38 PM EDT | Special Marine Warning | BOX | 52 min | |
| Jun 8, 5:17 PM EDT | Severe Thunderstorm Warning | BOX | Bristol, Middlesex, Norfolk, Worcester | 58 min |
| Jun 8, 5:33 PM EDT | Special Marine Warning | BOX | 42 min | |
| Jun 8, 5:59 PM EDT | Severe Thunderstorm Warning | BOX | Bristol, Norfolk, Plymouth, Suffolk | 35 min |
Nearby
Flash Flood Watches in Massachusetts, 2021Flash Flood Watches in Connecticut, 2021Every flash flood watch in 2021
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.