Alert archive / Massachusetts / Flash Flood Warnings in 2014
Flash Flood Warning 41, NWS Boston/Norton, MA
NWS Boston/Norton, MA issued this flash flood warning at Aug 13, 2014, 3:46 PM EDT for 4 counties in Massachusetts. It was in force for 4 hr. 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 13, 2014, 3:46 PM EDT (19:46 UTC)
- Expired
- Aug 13, 2014, 7:45 PM EDT
- In force
- 4 hr
- Issued by
- NWS Boston/Norton, MA
- Area
- Storm-based polygon
- Flood severity
- None
Counties Franklin County, MA, Hampshire County, MA, Middlesex County, MA, Worcester County, MA
The radar
The Boston radar (KBOX), 94 km from the middle of the area, began a volume at 19:47 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, 7.8 hours before the alert went out and 147 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
- 0 J/kg
- Mixed-layer CIN
- No buoyant parcel
- Mixed-layer LCL
- 723 m above ground
- 0-6 km bulk shear
- 31 kt
- 0-1 km storm-relative helicity
- 204 m²/s²
- 0-3 km storm-relative helicity
- 283 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted, in the capitals the NWS used until 2016.
619 WGUS51 KBOX 131946 FFWBOX MAC011-015-017-027-132345- /O.NEW.KBOX.FF.W.0041.140813T1946Z-140813T2345Z/ /00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/ BULLETIN - EAS ACTIVATION REQUESTED FLASH FLOOD WARNING NATIONAL WEATHER SERVICE TAUNTON MA 346 PM EDT WED AUG 13 2014 THE NATIONAL WEATHER SERVICE IN TAUNTON HAS ISSUED A * FLASH FLOOD WARNING FOR... EAST CENTRAL HAMPSHIRE COUNTY IN WESTERN MASSACHUSETTS... SOUTHEASTERN FRANKLIN COUNTY IN WESTERN MASSACHUSETTS... CENTRAL WORCESTER COUNTY IN CENTRAL MASSACHUSETTS... NORTHWESTERN MIDDLESEX COUNTY IN NORTHEAST MASSACHUSETTS... * UNTIL 745 PM EDT * AT 342 PM EDT...DOPPLER RADAR AND AUTOMATED RAIN GAUGES INDICATED THAT HEAVY RAIN WAS FALLING OVER NORTH CENTRAL MASSACHUSETTS. THE HEAVIEST RAIN WAS LOCATED IN THE VICINITY OF QUABBIN RESERVOIR NORTHWARD TO WINCHENDON...MOVING GRADUALLY TO THE EAST. AS THIS HEAVY RAIN CROSSES THROUGH NORTH CENTRAL MASSACHUSETTS...RAINFALL RATES OF UP TO 2 INCHES PER HOUR OR MORE ARE POSSIBLE. THIS IS EXPECTED TO PRODUCE FLASH FLOODING. URBAN FLASH FLOODING IS OF PARTICULAR CONCERN. * SOME LOCATIONS THAT WILL EXPERIENCE FLOODING INCLUDE... WORCESTER...LEOMINSTER...FITCHBURG...SHREWSBURY...ORANGE... GARDNER...GRAFTON...HOLDEN...AUBURN...BELCHERTOWN...CLINTON... MILLBURY...SPENCER...ATHOL...LEICESTER...WINCHENDON...LUNENBURG... WARE...TOWNSEND...LANCASTER...TEMPLETON...RUTLAND...STERLING...WEST BOYLSTON...WESTMINSTER...ASHBURNHAM...BARRE...WARREN...PAXTON AND NORTH BROOKFIELD. PRECAUTIONARY/PREPAREDNESS ACTIONS... RAPID FLOODING OF STREETS AND UNDERPASSES IS IMMINENT. DO NOT DRIVE THROUGH FLOODED ROADS AND FIND ALTERNATE ROUTES. A FLASH FLOOD WARNING IS ISSUED FOR RAPID AND POTENTIALLY LIFE THREATENING FLOODING. IN URBAN AREAS AVOID FLOODED ROADS AND OBEY ROAD CLOSURES. THOSE NEAR SMALL STREAMS SHOULD MONITOR CONDITIONS CLOSELY AND HEAD FOR HIGHER GROUND IF FLOODWATERS ENCROACH. && LAT...LON 4226 7236 4272 7228 4270 7167 4220 7171 $$ NMB
2 follow-up statements
900 WGUS71 KBOX 132121 FFSBOX FLASH FLOOD STATEMENT NATIONAL WEATHER SERVICE TAUNTON MA 521 PM EDT WED AUG 13 2014 MAC011-015-017-027-132345- /O.CON.KBOX.FF.W.0041.000000T0000Z-140813T2345Z/ /00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/ HAMPSHIRE MA-FRANKLIN MA-WORCESTER MA-MIDDLESEX MA- 521 PM EDT WED AUG 13 2014 ...THE FLASH FLOOD WARNING REMAINS IN EFFECT UNTIL 745 PM EDT FOR EAST CENTRAL HAMPSHIRE...SOUTHEASTERN FRANKLIN...CENTRAL WORCESTER AND NORTHWESTERN MIDDLESEX COUNTIES... AT 515 PM EDT...DOPPLER RADAR INDICATED THAT THE AREA OF HEAVY RAIN HAD MOVED EASTWARD. WITHIN THE WARNING AREA THE HEAVY RAIN EXTENDED FROM ASHBY AND FITCHBURG...SOUTHWARD TO WEST BOYLSTON. IN THAT AREA UP TO AN ADDITIONAL INCH OF RAIN IS POSSIBLE THROUGH 6 PM. URBAN AND POOR DRAINAGE FLASH FLOODING IS LIKELY. ELSEWHERE IN THE WARNING AREA...SOME STREAMS MAY NEAR BANKFULL LEVELS. IN ADDITION STANDING WATER IN URBAN AND POOR DRAINAGE AREAS MAY LINGER...AND TAKE SOME TIME TO RECEDE. PRECAUTIONARY/PREPAREDNESS ACTIONS... RAPID AND POTENTIALLY LIFE THREATENING FLOODING OF STREETS AND UNDERPASSES IS IMMINENT. DO NOT DRIVE THROUGH FLOODED ROADS AND FIND ALTERNATE ROUTES. && LAT...LON 4226 7236 4272 7228 4270 7167 4220 7171 $$ NMB
310 WGUS71 KBOX 132248 FFSBOX FLASH FLOOD STATEMENT NATIONAL WEATHER SERVICE TAUNTON MA 648 PM EDT WED AUG 13 2014 MAC011-015-017-027-132252- /O.CAN.KBOX.FF.W.0041.000000T0000Z-140813T2345Z/ /00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/ HAMPSHIRE MA-FRANKLIN MA-WORCESTER MA-MIDDLESEX MA- 648 PM EDT WED AUG 13 2014 ...THE FLASH FLOOD WARNING FOR EAST CENTRAL HAMPSHIRE...SOUTHEASTERN FRANKLIN...CENTRAL WORCESTER AND NORTHWESTERN MIDDLESEX COUNTIES IS CANCELLED... THE HEAVY RAIN THAT AFFECTED THE AREA EARLIER HAS DIMINISHED AND MOVED TO THE EAST...AND THE THREAT OF FLASH FLOODING HAS SUBSIDED. AS A RESULT...THE FLASH FLOOD WARNING THAT WAS IN EFFECT FOR NORTH CENTRAL MASSACHUSETTS HAS BEEN CANCELED. MINOR PONDING OF WATER IN POOR DRAINAGE AREAS MAY LINGER THIS EVENING. LAT...LON 4226 7236 4272 7228 4270 7167 4220 7171 $$ NMB
The office that day
Everything else NWS Boston/Norton, MA issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Aug 13, 8:58 AM EDT | Areal Flood Advisory | BOX | Worcester | 2 hr |
| Aug 13, 10:33 AM EDT | Coastal Flood Advisory | BOX | Barnstable, Essex, Nantucket, Norfolk, Plymouth, Suffolk | 5 hr |
| Aug 13, 10:59 AM EDT | Areal Flood Advisory | BOX | Bristol, Middlesex, Norfolk, Worcester | 4 hr |
| Aug 13, 11:24 AM EDT | Flash Flood Warning | BOX | Bristol, Norfolk, Worcester | 4 hr |
| Aug 13, 12:43 PM EDT | Areal Flood Advisory | BOX | Franklin, Hampden, Hampshire | 2 hr |
| Aug 13, 1:30 PM EDT | Flash Flood Warning | BOX | Hampden, Hampshire | 4 hr |
| Aug 13, 1:59 PM EDT | Flash Flood Warning | BOX | Franklin, Hampshire | 4 hr |
| Aug 13, 4:23 PM EDT | Severe Thunderstorm Warning | BOX | Worcester | 32 min |
| Aug 13, 4:28 PM EDT | Special Marine Warning | BOX | 62 min | |
| Aug 13, 5:00 PM EDT | Flash Flood Warning | BOX | Middlesex, Worcester | 4 hr |
| Aug 13, 6:16 PM EDT | Areal Flood Advisory | BOX | Essex, Middlesex | 119 min |
Nearby
Flash Flood Warnings in Massachusetts, 2014Every flash flood warning in 2014
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.