Alert archive / Massachusetts / Flash Flood Warnings in 2014

Flash Flood Warning 10, NWS Boston/Norton, MA

July 2, 2014Franklin County, Hampshire County, Massachusetts

NWS Boston/Norton, MA issued this flash flood warning at Jul 2, 2014, 2:04 PM EDT for Franklin County, Hampshire County, Massachusetts. It was in force for 116 min. 1 report 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 2, 2014, 2:04 PM EDT (18:04 UTC)
Expired: Jul 2, 2014, 4:00 PM EDT
In force: 116 min
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), 92 km from the middle of the area, began a volume at 18:04 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 2, 3:37 PM EDT	FLOOD	Shelburne Falls, MA	BROOK ALONG ZERAH FISKE ROAD OUT OF ITS BANKS

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, 6.1 hours before the alert went out and 74 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.

Skew-T log-p

Temperature in red, dew point in green, the mixed-layer parcel dashed.

Hodograph

The wind turning with height, colored by layer: ground to 1 km, 1 to 3 km, 3 to 6 km, 6 to 10 km.

Mixed-layer CAPE: 1263 J/kg
Mixed-layer CIN: -38 J/kg
Mixed-layer LCL: 897 m above ground
0-6 km bulk shear: 34 kt
0-1 km storm-relative helicity: 48 m²/s²
0-3 km storm-relative helicity: 85 m²/s²
Significant tornado parameter: 0.4
Supercell composite: 2.1

Open this sounding in Storm Lab

The text

As transmitted, in the capitals the NWS used until 2016.

921 
WGUS51 KBOX 021804
FFWBOX
MAC011-015-022000-
/O.NEW.KBOX.FF.W.0010.140702T1804Z-140702T2000Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/

BULLETIN - EAS ACTIVATION REQUESTED
FLASH FLOOD WARNING
NATIONAL WEATHER SERVICE TAUNTON MA
204 PM EDT WED JUL 2 2014

THE NATIONAL WEATHER SERVICE IN TAUNTON HAS ISSUED A

* FLASH FLOOD WARNING FOR...
  NORTHWESTERN HAMPSHIRE COUNTY IN WESTERN MASSACHUSETTS...
  NORTHWESTERN FRANKLIN COUNTY IN WESTERN MASSACHUSETTS...

* UNTIL 400 PM EDT

* AT 203 PM EDT...DOPPLER RADAR INDICATED THUNDERSTORMS PRODUCING
  HEAVY RAIN ACROSS THE WARNED AREA. UP TO TWO INCHES OF RAIN HAVE
  ALREADY FALLEN. FLASH FLOODING IS EXPECTED TO BEGIN SHORTLY.

* SOME LOCATIONS THAT WILL EXPERIENCE FLOODING INCLUDE...
  GREENFIELD...DEERFIELD...MONROE...MONTAGUE...NORTHFIELD...
  WILLIAMSBURG...BERNARDSTON...BUCKLAND...CONWAY...SHELBURNE...
  ASHFIELD...COLRAIN...GILL...WHATELY...CHARLEMONT...CHESTERFIELD...
  WORTHINGTON...GOSHEN...CUMMINGTON...LEYDEN...HEATH...PLAINFIELD...
  MIDDLEFIELD...ROWE...HAWLEY...EAST WINDSOR AND HOOSAC TUNNEL.

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 4238 7301 4239 7301 4263 7295 4266 7295
      4267 7300 4269 7296 4270 7295 4270 7302
      4274 7302 4273 7250 4243 7265 4233 7306
      4238 7307

$$

NOCERA

The office that day

Everything else NWS Boston/Norton, MA issued on the same UTC day.

Issued	Product	Office	Counties	Lasted
Jul 2, 1:31 PM EDT	Special Weather Statement	BOX	Franklin, Hampshire	44 min
Jul 2, 2:17 PM EDT	Flash Flood Watch	BOX	Franklin, Hampden, Hampshire, Middlesex, Worcester	7 hr
Jul 2, 2:24 PM EDT	Special Weather Statement	BOX	Franklin	66 min
Jul 2, 3:07 PM EDT	Severe Thunderstorm Warning	BOX	Franklin	53 min
Jul 2, 3:23 PM EDT	Special Weather Statement	BOX	Franklin, Hampden, Hampshire	52 min
Jul 2, 3:38 PM EDT	Severe Thunderstorm Warning	BOX	Franklin, Hampden, Hampshire	52 min
Jul 2, 4:03 PM EDT	Areal Flood Advisory	BOX	Franklin	117 min
Jul 2, 4:17 PM EDT	Severe Thunderstorm Warning	BOX	Hampden	58 min
Jul 2, 4:42 PM EDT	Areal Flood Advisory	BOX	Franklin, Middlesex, Worcester	2 hr
Jul 2, 4:57 PM EDT	Severe Thunderstorm Warning	BOX	Franklin, Hampden, Hampshire	63 min
Jul 2, 5:06 PM EDT	Severe Thunderstorm Warning	BOX	Hampden, Hampshire	54 min
Jul 2, 5:42 PM EDT	Severe Thunderstorm Warning	BOX	Franklin, Hampden, Hampshire, Worcester	33 min

Nearby

Flash Flood Warnings in Massachusetts, 2014 Every 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; local storm reports from the same archive; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.