Alert archive / Massachusetts / Flash Flood Watches in 2012
Flash Flood Watch 3, NWS Boston/Norton, MA
NWS Boston/Norton, MA issued this flash flood watch at Aug 5, 2012, 4:03 AM EDT for Franklin County, Hampden County, Hampshire County, Massachusetts; Capitol Planning Region, Connecticut; Cheshire County, New Hampshire. It took effect at Aug 5, 2012, 2:00 PM EDT. It was in force for 9 hr.
The area
The counties it named.
The facts
- Issued
- Aug 5, 2012, 4:03 AM EDT (08:03 UTC)
- In effect from
- Aug 5, 2012, 2:00 PM EDT
- Expired
- Aug 5, 2012, 10:43 PM EDT
- In force
- 9 hr
- Issued by
- NWS Boston/Norton, MA
- Flood severity
- None
Counties Capitol Planning Region, CT, Franklin County, MA, Hampden County, MA, Hampshire County, MA, Cheshire County, NH
The radar
The Boston radar (KBOX), 124 km from the middle of the area, began a volume at 08:00 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 00:00Z, 8.1 hours before the alert went out and 112 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
- 991 J/kg
- Mixed-layer CIN
- -44 J/kg
- Mixed-layer LCL
- 1709 m above ground
- 0-6 km bulk shear
- 9 kt
- 0-1 km storm-relative helicity
- 12 m²/s²
- 0-3 km storm-relative helicity
- 9 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted, in the capitals the NWS used until 2016.
327 WGUS61 KBOX 050803 FFABOX URGENT - IMMEDIATE BROADCAST REQUESTED FLOOD WATCH NATIONAL WEATHER SERVICE TAUNTON MA 403 AM EDT SUN AUG 5 2012 ...LOCALIZED FLASH FLOODING POSSIBLE TONIGHT... .ISOLATED THUNDERSTORMS WITH HEAVY DOWNPOURS MAY DEVELOP LATE THIS AFTERNOON. THEN...MORE WIDESPREAD SHOWERS AND THUNDERSTORMS WILL MOVE INTO SOUTHERN NEW ENGLAND TONIGHT. A FEW OF THE THUNDERSTORMS MAY CONTAIN EXCESSIVE RAINFALL. CTZ002-MAZ002-003-008>011-NHZ011-051615- /O.NEW.KBOX.FF.A.0003.120805T1800Z-120806T1200Z/ /00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/ HARTFORD CT-WESTERN FRANKLIN MA-EASTERN FRANKLIN MA- WESTERN HAMPSHIRE MA-WESTERN HAMPDEN MA-EASTERN HAMPSHIRE MA- EASTERN HAMPDEN MA-CHESHIRE NH- INCLUDING THE CITIES OF...HARTFORD...WINDSOR LOCKS...CHARLEMONT... GREENFIELD...ORANGE...CHESTERFIELD...BLANDFORD...AMHERST... NORTHAMPTON...SPRINGFIELD...JAFFREY...KEENE 403 AM EDT SUN AUG 5 2012 ...FLASH FLOOD WATCH IN EFFECT FROM 2 PM EDT THIS AFTERNOON THROUGH MONDAY MORNING... THE NATIONAL WEATHER SERVICE IN TAUNTON HAS ISSUED A * FLASH FLOOD WATCH FOR PORTIONS OF NORTHERN CONNECTICUT... WESTERN MASSACHUSETTS AND SOUTHERN NEW HAMPSHIRE...INCLUDING THE FOLLOWING AREAS...IN NORTHERN CONNECTICUT...HARTFORD COUNTY. IN WESTERN MASSACHUSETTS...FRANKLIN...HAMPDEN AND HAMPSHIRE COUNTIES. IN SOUTHERN NEW HAMPSHIRE...CHESHIRE COUNTY. * FROM 2 PM EDT THIS AFTERNOON THROUGH MONDAY MORNING * SHOWERS AND THUNDERSTORMS AHEAD OF A COLD FRONT MAY PRODUCE LOCALIZED AREAS OF EXCESSIVE RAINFALL LEADING TO RAPID FLOODING OF SOME SMALL STREAMS OR POOR DRAINAGE AREAS. * IT IS POSSIBLE THAT AN ISOLATED THUNDERSTORM WITH HEAVY DOWNPOURS COULD POSE A FLASH FLOOD RISK LATE THIS AFTERNOON. THE HIGHEST RISK FOR LOCALIZED FLASH FLOODING WILL BE THIS EVENING WHEN MORE ORGANIZED SHOWERS AND THUNDERSTORMS MOVE INTO SOUTHWEST NEW HAMPSHIRE...WESTERN MASSACHUSETTS AND WESTERN CONNECTICUT. PRECAUTIONARY/PREPAREDNESS ACTIONS... A FLASH FLOOD WATCH MEANS THAT CONDITIONS MAY DEVELOP THAT LEAD TO FLASH FLOODING. FLASH FLOODING IS A VERY DANGEROUS SITUATION. YOU SHOULD MONITOR LATER FORECASTS AND BE PREPARED TO TAKE ACTION SHOULD FLASH FLOOD WARNINGS BE ISSUED. && $$ THOMPSON
3 follow-up statements
036 WGUS61 KBOX 051517 FFABOX FLOOD WATCH NATIONAL WEATHER SERVICE TAUNTON MA 1117 AM EDT SUN AUG 5 2012 ...LOCALIZED FLASH FLOODING POSSIBLE TONIGHT... .ISOLATED THUNDERSTORMS WITH HEAVY DOWNPOURS MAY DEVELOP LATE THIS AFTERNOON. THEN...MORE WIDESPREAD SHOWERS AND THUNDERSTORMS WILL MOVE INTO SOUTHERN NEW ENGLAND TONIGHT. A FEW OF THE THUNDERSTORMS MAY CONTAIN EXCESSIVE RAINFALL. CTZ002-MAZ002-003-008>011-NHZ011-052330- /O.CON.KBOX.FF.A.0003.120805T1800Z-120806T1200Z/ /00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/ HARTFORD CT-WESTERN FRANKLIN MA-EASTERN FRANKLIN MA- WESTERN HAMPSHIRE MA-WESTERN HAMPDEN MA-EASTERN HAMPSHIRE MA- EASTERN HAMPDEN MA-CHESHIRE NH- INCLUDING THE CITIES OF...HARTFORD...WINDSOR LOCKS...CHARLEMONT... GREENFIELD...ORANGE...CHESTERFIELD...BLANDFORD...AMHERST... NORTHAMPTON...SPRINGFIELD...JAFFREY...KEENE 1117 AM EDT SUN AUG 5 2012 ...FLASH FLOOD WATCH REMAINS IN EFFECT THROUGH MONDAY MORNING... THE FLASH FLOOD WATCH CONTINUES FOR * PORTIONS OF NORTHERN CONNECTICUT...WESTERN MASSACHUSETTS AND SOUTHERN NEW HAMPSHIRE...INCLUDING THE FOLLOWING COUNTIES...IN NORTHERN CONNECTICUT...HARTFORD CT. IN WESTERN MASSACHUSETTS... FRANKLIN MA...HAMPDEN MA AND HAMPSHIRE MA. IN SOUTHERN NEW HAMPSHIRE...CHESHIRE NH. * THROUGH MONDAY MORNING * SHOWERS AND THUNDERSTORMS AHEAD OF A COLD FRONT MAY PRODUCE LOCALIZED AREAS OF EXCESSIVE RAINFALL LEADING TO RAPID FLOODING OF SOME SMALL STREAMS OR POOR DRAINAGE AREAS. * IT IS POSSIBLE THAT AN ISOLATED THUNDERSTORM WITH HEAVY DOWNPOURS COULD POSE A FLASH FLOOD RISK LATE THIS AFTERNOON. THE HIGHEST RISK FOR LOCALIZED FLASH FLOODING WILL BE THIS EVENING WHEN MORE ORGANIZED SHOWERS AND THUNDERSTORMS MOVE INTO SOUTHWEST NEW HAMPSHIRE...WESTERN MASSACHUSETTS AND WESTERN CONNECTICUT. PRECAUTIONARY/PREPAREDNESS ACTIONS... A FLASH FLOOD WATCH MEANS THAT CONDITIONS MAY DEVELOP THAT LEAD TO FLASH FLOODING. FLASH FLOODING IS A VERY DANGEROUS SITUATION. YOU SHOULD MONITOR LATER FORECASTS AND BE PREPARED TO TAKE ACTION SHOULD FLASH FLOOD WARNINGS BE ISSUED. && $$
792 WGUS61 KBOX 051950 FFABOX FLOOD WATCH NATIONAL WEATHER SERVICE TAUNTON MA 350 PM EDT SUN AUG 5 2012 ...LOCALIZED FLASH FLOODING POSSIBLE TONIGHT... .ISOLATED THUNDERSTORMS WITH HEAVY DOWNPOURS MAY DEVELOP LATE THIS AFTERNOON. THEN...MORE WIDESPREAD SHOWERS AND THUNDERSTORMS WILL MOVE INTO SOUTHERN NEW ENGLAND TONIGHT. A FEW OF THE THUNDERSTORMS MAY CONTAIN EXCESSIVE RAINFALL. CTZ002-MAZ002-003-008>011-NHZ011-060400- /O.CON.KBOX.FF.A.0003.000000T0000Z-120806T1200Z/ /00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/ HARTFORD CT-WESTERN FRANKLIN MA-EASTERN FRANKLIN MA- WESTERN HAMPSHIRE MA-WESTERN HAMPDEN MA-EASTERN HAMPSHIRE MA- EASTERN HAMPDEN MA-CHESHIRE NH- INCLUDING THE CITIES OF...HARTFORD...WINDSOR LOCKS...CHARLEMONT... GREENFIELD...ORANGE...CHESTERFIELD...BLANDFORD...AMHERST... NORTHAMPTON...SPRINGFIELD...JAFFREY...KEENE 350 PM EDT SUN AUG 5 2012 ...FLASH FLOOD WATCH REMAINS IN EFFECT THROUGH MONDAY MORNING... THE FLASH FLOOD WATCH CONTINUES FOR * PORTIONS OF NORTHERN CONNECTICUT...WESTERN MASSACHUSETTS AND SOUTHERN NEW HAMPSHIRE...INCLUDING THE FOLLOWING COUNTIES...IN NORTHERN CONNECTICUT...HARTFORD. IN WESTERN MASSACHUSETTS... FRANKLIN...HAMPDEN AND HAMPSHIRE. IN SOUTHERN NEW HAMPSHIRE... CHESHIRE. * THROUGH MONDAY MORNING * SHOWERS AND THUNDERSTORMS AHEAD OF A COLD FRONT MAY PRODUCE LOCALIZED AREAS OF EXCESSIVE RAINFALL LEADING TO RAPID FLOODING OF SOME SMALL STREAMS OR POOR DRAINAGE AREAS. * IT IS POSSIBLE THAT AN ISOLATED THUNDERSTORM WITH HEAVY DOWNPOURS COULD POSE A FLASH FLOOD RISK LATE THIS AFTERNOON. THE HIGHEST RISK FOR LOCALIZED FLASH FLOODING WILL BE THIS EVENING WHEN MORE ORGANIZED SHOWERS AND THUNDERSTORMS MOVE INTO SOUTHWEST NEW HAMPSHIRE...WESTERN MASSACHUSETTS AND WESTERN CONNECTICUT. PRECAUTIONARY/PREPAREDNESS ACTIONS... A FLASH FLOOD WATCH MEANS THAT CONDITIONS MAY DEVELOP THAT LEAD TO FLASH FLOODING. FLASH FLOODING IS A VERY DANGEROUS SITUATION. YOU SHOULD MONITOR LATER FORECASTS AND BE PREPARED TO TAKE ACTION SHOULD FLASH FLOOD WARNINGS BE ISSUED. && $$
153 WGUS61 KBOX 060243 FFABOX FLOOD WATCH NATIONAL WEATHER SERVICE TAUNTON MA 1043 PM EDT SUN AUG 5 2012 ...FLOOD WATCH CANCELED... CTZ002-MAZ002-003-008>011-NHZ011-060345- /O.CAN.KBOX.FF.A.0003.000000T0000Z-120806T1200Z/ /00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/ HARTFORD CT-WESTERN FRANKLIN MA-EASTERN FRANKLIN MA- WESTERN HAMPSHIRE MA-WESTERN HAMPDEN MA-EASTERN HAMPSHIRE MA- EASTERN HAMPDEN MA-CHESHIRE NH- INCLUDING THE CITIES OF...HARTFORD...WINDSOR LOCKS...CHARLEMONT... GREENFIELD...ORANGE...CHESTERFIELD...BLANDFORD...AMHERST... NORTHAMPTON...SPRINGFIELD...JAFFREY...KEENE 1043 PM EDT SUN AUG 5 2012 ...FLASH FLOOD WATCH IS CANCELLED... THE FLASH FLOOD WATCH FOR PORTIONS OF NORTHERN CONNECTICUT... WESTERN MASSACHUSETTS AND SOUTHERN NEW HAMPSHIRE HAS BEEN CANCELLED. SCATTERED SHOWERS AND THUNDERSTORMS WILL REMAIN POSSIBLE OVERNIGHT AHEAD OF AN APPROACHING COLD FRONT. WHILE BRIEF HEAVY RAINFALL IS POSSIBLE...THE THREAT FOR FLOODING RAINS IS GREATLY DIMINISHED. AS A RESULT...THE FLOOD WATCH FOR WESTERN PORTIONS OF SOUTHERN NEW ENGLAND HAS BEEN CANCELLED. $$ NMB
The office that day
Everything else NWS Boston/Norton, MA issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Aug 5, 4:08 AM EDT | Small Craft Advisory | BOX | 27 hr | |
| Aug 5, 2:02 PM EDT | Special Weather Statement | BOX | Hampden, Hampshire | 58 min |
| Aug 5, 3:03 PM EDT | Severe Thunderstorm Warning | BOX | Franklin, Hampshire, Worcester | 42 min |
| Aug 5, 3:33 PM EDT | Special Weather Statement | BOX | Worcester | 57 min |
| Aug 5, 4:20 PM EDT | Severe Thunderstorm Warning | BOX | Hampden | 40 min |
| Aug 5, 4:38 PM EDT | Severe Thunderstorm Warning | BOX | Middlesex, Worcester | 47 min |
| Aug 5, 5:05 PM EDT | Severe Thunderstorm Warning | BOX | Hampden, Worcester | 40 min |
| Aug 5, 5:30 PM EDT | Special Marine Warning | BOX | 51 min | |
| Aug 5, 5:46 PM EDT | Severe Thunderstorm Warning | BOX | Worcester | 29 min |
| Aug 5, 7:52 PM EDT | Special Weather Statement | BOX | Hampden | 83 min |
| Aug 5, 2:29 PM EDT | Special Weather Statement | BOX | 61 min | |
| Aug 5, 4:58 PM EDT | Severe Thunderstorm Warning | BOX | Capitol Planning Region | 47 min |
| Aug 5, 5:13 PM EDT | Areal Flood Advisory | BOX | Capitol Planning Region | 3 hr |
| Aug 5, 5:57 PM EDT | Areal Flood Advisory | BOX | Capitol Planning Region, Northeastern Connecticut Planning Region | 3 hr |
| Aug 5, 6:30 PM EDT | Severe Thunderstorm Warning | BOX | Capitol Planning Region, Northeastern Connecticut Planning Region | 18 min |
| Aug 5, 3:26 PM EDT | Special Weather Statement | BOX | Hillsborough | 64 min |
| Aug 5, 3:46 PM EDT | Special Weather Statement | BOX | Hillsborough | 59 min |
Nearby
Flash Flood Watches in Massachusetts, 2012Flash Flood Watches in Connecticut, 2012Flash Flood Watches in New Hampshire, 2012Every flash flood watch in 2012
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.