Alert archive / Massachusetts / Flash Flood Warnings in 2011
Flash Flood Warning 7, NWS Boston/Norton, MA
NWS Boston/Norton, MA issued this flash flood warning at Aug 1, 2011, 4:07 PM EDT for Franklin County, Worcester County, Massachusetts. It was in force for 82 min. No storm report in the archive falls inside the area while it was in force.
The area
The outline as issued.
The facts
- Issued
- Aug 1, 2011, 4:07 PM EDT (20:07 UTC)
- Expired
- Aug 1, 2011, 5:29 PM EDT
- In force
- 82 min
- Issued by
- NWS Boston/Norton, MA
- Area
- Storm-based polygon
- Flood severity
- None
Counties Franklin County, MA, Worcester County, MA
The radar
The Boston radar (KBOX), 127 km from the middle of the area, began a volume at 20:09 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, 8.1 hours before the alert went out and 121 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
- 1159 J/kg
- Mixed-layer CIN
- -92 J/kg
- Mixed-layer LCL
- 824 m above ground
- 0-6 km bulk shear
- 17 kt
- 0-1 km storm-relative helicity
- 96 m²/s²
- 0-3 km storm-relative helicity
- 116 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted, in the capitals the NWS used until 2016.
927
WGUS51 KBOX 012007
FFWBOX
MAC011-027-012300-
/O.NEW.KBOX.FF.W.0007.110801T2007Z-110801T2300Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
BULLETIN - EAS ACTIVATION REQUESTED
FLASH FLOOD WARNING
NATIONAL WEATHER SERVICE TAUNTON MA
407 PM EDT MON AUG 1 2011
THE NATIONAL WEATHER SERVICE IN TAUNTON HAS ISSUED A
* FLASH FLOOD WARNING FOR...
NORTHWESTERN WORCESTER COUNTY IN CENTRAL MASSACHUSETTS...
NORTHEASTERN FRANKLIN COUNTY IN WESTERN MASSACHUSETTS...
* UNTIL 700 PM EDT
* AT 405 PM EDT...RADAR INDICATED TORRENTIAL RAINS FALLING FROM
THUNDERSTORMS OVER THE BERNARDSTON AND GILL AREAS...AS WELL AS
SURROUNDING COMMUNITIES. RAINFALL RATES OF UP TO 3 INCHES IN ONE
HOUR OR MORE ARE POSSIBLE WITH THESE STORMS THROUGH 5 PM. AS A
RESULT...FLASH FLOODING IS EXPECTED.
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 7253 4272 7211 4271 7209 4246 7228
4261 7257
$$
NMB1 follow-up statement
486
WGUS71 KBOX 012129
FFSBOX
FLASH FLOOD STATEMENT
NATIONAL WEATHER SERVICE TAUNTON MA
529 PM EDT MON AUG 1 2011
MAC011-027-012136-
/O.CAN.KBOX.FF.W.0007.000000T0000Z-110801T2300Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
WORCESTER MA-FRANKLIN MA-
529 PM EDT MON AUG 1 2011
...THE FLASH FLOOD WARNING HAS BEEN CANCELLED FOR NORTHEASTERN
FRANKLIN AND NORTHWESTERN WORCESTER COUNTIES...
FOR NOW...THUNDERSTORMS HAVE EXITED THE MAJORITY OF THE AREA FROM
WENDELL NORTHWARD TO THE MASSACHUSETTS/NEW HAMPSHIRE BORDER...NEAR
NORTHFIELD TO ROYALSTON. FLOODING HAS NOT BEEN REPORTED IN THIS
AREA. AS A RESULT...THE FLASH FLOOD WARNING HAS BEEN CANCELED.
HOWEVER...A FLOOD ADVISORY DOES REMAIN IN EFFECT UNTIL 745 PM FROM
MONTAGUE SOUTHEAST TO QUABBIN RESERVOIR...FOR THUNDERSTORMS MOVING
THROUGH THAT AREA. MINOR POOR DRAINAGE FLOODING IS EXPECTED IN THAT
AREA.
A SEVERE THUNDERSTORM WATCH REMAINS IN EFFECT UNTIL 1000 PM EDT
MONDAY EVENING FOR NORTHERN CONNECTICUT AND MASSACHUSETTS AND
SOUTHERN NEW HAMPSHIRE AND CENTRAL RHODE ISLAND.
LAT...LON 4272 7253 4272 7211 4271 7209 4246 7228
4261 7257
$$
NMBThe office that day
Everything else NWS Boston/Norton, MA issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Aug 1, 12:37 PM EDT | Special Weather Statement | BOX | Hampshire | 53 min |
| Aug 1, 1:24 PM EDT | Special Weather Statement | BOX | Hampshire | 51 min |
| Aug 1, 1:27 PM EDT | Areal Flood Advisory | BOX | Franklin, Hampshire, Worcester | 3 hr |
| Aug 1, 1:34 PM EDT | Severe Thunderstorm Warning | BOX | Franklin, Hampshire, Worcester | 19 min |
| Aug 1, 1:41 PM EDT | Flash Flood Warning | BOX | Franklin, Hampshire, Worcester | 3 hr |
| Aug 1, 1:55 PM EDT | Severe Thunderstorm Warning | BOX | Hampden, Hampshire | 35 min |
| Aug 1, 2:03 PM EDT | Special Weather Statement | BOX | Franklin | 42 min |
| Aug 1, 2:08 PM EDT | Special Weather Statement | BOX | Hampden | 52 min |
| Aug 1, 2:13 PM EDT | Severe Thunderstorm Warning | BOX | Hampden | 47 min |
| Aug 1, 2:19 PM EDT | Flash Flood Warning | BOX | Hampden, Hampshire, Worcester | 116 min |
| Aug 1, 2:19 PM EDT | Severe Thunderstorm Warning | BOX | Franklin, Hampshire | 41 min |
| Aug 1, 3:01 PM EDT | Special Weather Statement | BOX | Worcester | 59 min |
| Aug 1, 3:05 PM EDT | Severe Thunderstorm Warning | BOX | Hampden, Worcester | 17 min |
| Aug 1, 3:10 PM EDT | Special Weather Statement | BOX | Franklin | 50 min |
| Aug 1, 3:14 PM EDT | Severe Thunderstorm Warning | BOX | Franklin, Hampshire, Worcester | 38 min |
| Aug 1, 3:18 PM EDT | Severe Thunderstorm Warning | BOX | Franklin, Worcester | 42 min |
| Aug 1, 3:30 PM EDT | Severe Thunderstorm Warning | BOX | Franklin, Hampden, Hampshire, Worcester | 45 min |
| Aug 1, 3:33 PM EDT | Special Weather Statement | BOX | Hampden | 57 min |
| Aug 1, 3:40 PM EDT | Areal Flood Advisory | BOX | Franklin, Worcester | 113 min |
| Aug 1, 3:41 PM EDT | Severe Thunderstorm Warning | BOX | Hampden | 49 min |
| Aug 1, 3:59 PM EDT | Severe Thunderstorm Warning | BOX | Franklin, Worcester | 61 min |
| Aug 1, 4:08 PM EDT | Special Weather Statement | BOX | Essex | 67 min |
| Aug 1, 4:15 PM EDT | Areal Flood Advisory | BOX | Hampden | 3 hr |
| Aug 1, 4:31 PM EDT | Severe Thunderstorm Warning | BOX | Franklin, Worcester | 27 min |
| Aug 1, 4:37 PM EDT | Special Weather Statement | BOX | Franklin | 23 min |
| Aug 1, 4:42 PM EDT | Severe Thunderstorm Warning | BOX | Franklin, Hampshire, Worcester | 63 min |
| Aug 1, 4:55 PM EDT | Areal Flood Advisory | BOX | Franklin, Hampshire, Worcester | 3 hr |
| Aug 1, 5:29 PM EDT | Special Weather Statement | BOX | Franklin | 31 min |
| Aug 1, 6:29 PM EDT | Special Weather Statement | BOX | Hampshire | 46 min |
Nearby
Flash Flood Warnings in Massachusetts, 2011Every 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; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.