Alert archive / Massachusetts / Flash Flood Warnings in 2015
Flash Flood Warning 11, NWS Boston/Norton, MA
NWS Boston/Norton, MA issued this flash flood warning at Jul 27, 2015, 4:27 PM EDT for Franklin County, Hampshire County, Massachusetts. It was in force for 2 hr. 5 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 27, 2015, 4:27 PM EDT (20:27 UTC)
- Expired
- Jul 27, 2015, 6:30 PM EDT
- In force
- 2 hr
- Issued by
- NWS Boston/Norton, MA
- Area
- Storm-based polygon
- Flood severity
- None
Counties Franklin County, MA, Hampshire County, MA
The radar
The Albany radar (KENX), 114 km from the middle of the area, began a volume at 20:27 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 |
|---|---|---|---|
| Jul 27, 4:40 PM EDT | FLASH FLOOD | Williamsburg, MA | HEAVY RAIN CAUSED PARTIAL WASHOUT OF BERKSHIRE TRAIL ROUTE 9...WATER RUNNING DOWN DRIVEWAY |
| Jul 27, 4:40 PM EDT | FLASH FLOOD | Williamsburg, MA | HEAVY RAIN CAUSED WASHOUT OF ROUTE 9...ROAD CLOSED BETWEEN SOUTH STREET AND RIVER ROAD BY STATE POLICE...ROADWAY IMPASSABLE AND SEVERELY DAMAGED |
| Jul 27, 5:03 PM EDT | FLASH FLOOD | Williamsburg, MA | HYDE HILL ROAD WASHED OUT DUE TO HEAVY RAINFALL |
| Jul 27, 5:21 PM EDT | FLASH FLOOD | Williamsburg, MA | ROUTE 9 AND OLD GOSHEN ROAD CLOSED DUE TO HEAVY RAIN AND MUDSLIDES VIA MASS DOT |
| Jul 27, 5:45 PM EDT | FLASH FLOOD | Williamsburg, MA | BASEMENT FLOODED ON VILLAGE HILL ROAD...ONE FOOT OF WATER AND RISING |
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, 8.5 hours before the alert went out and 99 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
- 144 J/kg
- Mixed-layer CIN
- -83 J/kg
- Mixed-layer LCL
- 916 m above ground
- 0-6 km bulk shear
- 14 kt
- 0-1 km storm-relative helicity
- 36 m²/s²
- 0-3 km storm-relative helicity
- 80 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted, in the capitals the NWS used until 2016.
941 WGUS51 KBOX 272027 FFWBOX MAC011-015-272230- /O.NEW.KBOX.FF.W.0011.150727T2027Z-150727T2230Z/ /00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/ BULLETIN - EAS ACTIVATION REQUESTED FLASH FLOOD WARNING NATIONAL WEATHER SERVICE TAUNTON MA 427 PM EDT MON JUL 27 2015 THE NATIONAL WEATHER SERVICE IN TAUNTON HAS ISSUED A * FLASH FLOOD WARNING FOR... CENTRAL HAMPSHIRE COUNTY IN WESTERN MASSACHUSETTS... CENTRAL FRANKLIN COUNTY IN WESTERN MASSACHUSETTS... * UNTIL 630 PM EDT * AT 425 PM EDT...DOPPLER RADAR INDICATED THUNDERSTORMS PRODUCING HEAVY RAIN ACROSS THE WARNED AREA. FLASH FLOODING IS EXPECTED TO BEGIN SHORTLY...ESPECIALLY NEAR MEEKIN BROOK AND THE MILL RIVER IN WILLIAMSBURG AND GOSHEN. * SOME LOCATIONS THAT WILL EXPERIENCE FLOODING INCLUDE... AMHERST...NORTHAMPTON...SOUTH HADLEY...GRANBY...HADLEY... SUNDERLAND...HATFIELD...WILLIAMSBURG...CONWAY...SHUTESBURY... WESTHAMPTON...WHATELY...PELHAM...CHESTERFIELD AND GOSHEN. PRECAUTIONARY/PREPAREDNESS ACTIONS... 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 MUST HEAD FOR HIGHER GROUND IMMEDIATELY. && LAT...LON 4236 7287 4246 7282 4242 7243 4226 7251 $$ RLG
2 follow-up statements
159 WGUS71 KBOX 272045 FFSBOX FLASH FLOOD STATEMENT NATIONAL WEATHER SERVICE TAUNTON MA 445 PM EDT MON JUL 27 2015 MAC011-015-272230- /O.CON.KBOX.FF.W.0011.000000T0000Z-150727T2230Z/ /00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/ HAMPSHIRE MA-FRANKLIN MA- 445 PM EDT MON JUL 27 2015 ...THE FLASH FLOOD WARNING REMAINS IN EFFECT UNTIL 630 PM EDT FOR CENTRAL HAMPSHIRE AND CENTRAL FRANKLIN COUNTIES... AT 443 PM EDT...TRAINED WEATHER SPOTTERS REPORTED THAT A PORTION OF ROUTE 9 OR BERKSHIRE TRAIL IN WILLIAMSBURG WAS WASHED OUT. RADAR HAS INDICATED THAT 4 TO 5 INCHES OF RAIN HAS FALLEN IN THE LAST HOUR IN THIS SAME AREA. AREAS NEAR MEEKIN BROOK AND THE EAST BRANCH OF THE MILL RIVER IN WILLIAMSBURG ARE ESPECIALLY SUSCEPTIBLE TO FLASH FLOODING. PRECAUTIONARY/PREPAREDNESS ACTIONS... A FLASH FLOOD WARNING IS ISSUED FOR RAPID AND POTENTIALLY LIFE THREATENING FLOODING. IN URBAN AREAS AVOID FLOODED ROADS AND OBEY ROAD CLOSURES. THOSE NEAR SMALL STREAMS MUST HEAD FOR HIGHER GROUND IMMEDIATELY. && LAT...LON 4236 7287 4246 7282 4242 7243 4226 7251 $$ RLG
007 WGUS71 KBOX 272221 FFSBOX FLASH FLOOD STATEMENT NATIONAL WEATHER SERVICE TAUNTON MA 621 PM EDT MON JUL 27 2015 MAC011-015-272230- /O.EXP.KBOX.FF.W.0011.000000T0000Z-150727T2230Z/ /00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/ HAMPSHIRE MA-FRANKLIN MA- 621 PM EDT MON JUL 27 2015 ...THE FLASH FLOOD WARNING FOR CENTRAL HAMPSHIRE AND CENTRAL FRANKLIN COUNTIES WILL EXPIRE AT 630 PM EDT... THE HEAVY RAIN HAS ENDED...AND FLOODING IS NO LONGER EXPECTED TO POSE A THREAT. LAT...LON 4236 7287 4246 7282 4242 7243 4226 7251 $$ MD
The office that day
Everything else NWS Boston/Norton, MA issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jul 27, 12:53 AM EDT | Special Weather Statement | BOX | Suffolk | 37 min |
| Jul 27, 2:26 AM EDT | Special Weather Statement | BOX | Bristol | 49 min |
| Jul 27, 3:14 AM EDT | Special Weather Statement | BOX | Bristol | 61 min |
| Jul 27, 4:00 AM EDT | Special Weather Statement | BOX | Bristol, Plymouth | 60 min |
| Jul 27, 4:55 AM EDT | Special Weather Statement | BOX | Bristol | 65 min |
| Jul 27, 9:34 AM EDT | Flash Flood Warning | BOX | Bristol | 3 hr |
| Jul 27, 9:58 AM EDT | Special Marine Warning | BOX | 47 min | |
| Jul 27, 11:49 AM EDT | Special Weather Statement | BOX | Bristol | 56 min |
| Jul 27, 12:45 PM EDT | Special Weather Statement | BOX | Franklin | 60 min |
| Jul 27, 1:02 PM EDT | Special Weather Statement | BOX | Franklin | 58 min |
| Jul 27, 1:11 PM EDT | Severe Thunderstorm Warning | BOX | Franklin, Hampshire | 64 min |
| Jul 27, 1:13 PM EDT | Flash Flood Warning | BOX | Franklin, Hampshire | 3 hr |
| Jul 27, 1:57 PM EDT | Special Weather Statement | BOX | Franklin | 63 min |
| Jul 27, 2:29 PM EDT | Special Weather Statement | BOX | Middlesex | 61 min |
| Jul 27, 2:38 PM EDT | Special Weather Statement | BOX | Franklin | 67 min |
| Jul 27, 3:09 PM EDT | Flash Flood Warning | BOX | Franklin | 3 hr |
| Jul 27, 4:06 PM EDT | Special Weather Statement | BOX | Hampshire | 39 min |
| Jul 27, 4:25 PM EDT | Special Weather Statement | BOX | Middlesex | 50 min |
| Jul 27, 5:01 PM EDT | Special Weather Statement | BOX | Suffolk | 59 min |
| Jul 27, 6:10 PM EDT | Special Weather Statement | BOX | Hampden | 65 min |
| Jul 27, 6:15 PM EDT | Severe Thunderstorm Warning | BOX | Hampden | 46 min |
| Jul 27, 6:28 PM EDT | Special Weather Statement | BOX | Essex | 47 min |
| Jul 27, 6:33 PM EDT | Special Marine Warning | BOX | 57 min |
Nearby
Flash Flood Warnings in Massachusetts, 2015Every flash flood warning in 2015
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.