Alert archive / Massachusetts / Flash Flood Warnings in 2008

Flash Flood Warning 2, NWS Boston/Norton, MA

June 24, 2008Bristol County, Plymouth County, Massachusetts

NWS Boston/Norton, MA issued this flash flood warning at Jun 24, 2008, 1:43 PM EDT for Bristol County, Plymouth County, Massachusetts. It was in force for 62 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
Jun 24, 2008, 1:43 PM EDT (17:43 UTC)
Expired
Jun 24, 2008, 2:45 PM EDT
In force
62 min
Issued by
NWS Boston/Norton, MA
Area
Storm-based polygon
Flood severity
None

Counties Bristol County, MA, Plymouth County, MA

The radar

The Boston radar (KBOX), 36 km from the middle of the area, began a volume at 17:46 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

Chatham, MA (KCHH), launched 12:00Z, 5.7 hours before the alert went out and 67 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-pSkew-T log-p diagram, Chatham, MA at 12:00Z on 2008-06-24Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 228 joules per kilogram.LCLLFCEL10008507005003002001001 km2 km3 km6 km9 km12 km15 km-30°-20°-10°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Chatham, MA at 12:00Z on 2008-06-24The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity -18 square meters per square second.1939587897Sfc1 km3 km6 km9 kmRMLM
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
228 J/kg
Mixed-layer CIN
-71 J/kg
Mixed-layer LCL
845 m above ground
0-6 km bulk shear
45 kt
0-1 km storm-relative helicity
-18 m²/s²
0-3 km storm-relative helicity
59 m²/s²
Significant tornado parameter
-0.0
Supercell composite
-0.5

Open this sounding in Storm Lab

The text

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

000 
WGUS51 KBOX 241743
FFWBOX
MAC005-023-241845-
/O.NEW.KBOX.FF.W.0002.080624T1743Z-080624T1845Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/

BULLETIN - EAS ACTIVATION REQUESTED
FLASH FLOOD WARNING
NATIONAL WEATHER SERVICE TAUNTON MA
143 PM EDT TUE JUN 24 2008

THE NATIONAL WEATHER SERVICE IN TAUNTON HAS ISSUED A

* FLASH FLOOD WARNING FOR...
  EXTREME EAST CENTRAL BRISTOL COUNTY IN SOUTHEAST MASSACHUSETTS...
  SOUTHERN PLYMOUTH COUNTY IN SOUTHEAST MASSACHUSETTS...
  THIS INCLUDES THE CITY OF PLYMOUTH...

* UNTIL 245 PM EDT

* AT 137 PM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED
  TORRENTIAL DOWNPOURS FROM A THUNDERSTORM OVER THE WARNED AREA. 
  RAINFALL RATES OF OVER 2 INCHES PER HOUR ARE LIKELY THROUGH
  230 PM.

* LOCATIONS IN THE WARNING INCLUDE BUT ARE NOT LIMITED TO CARVER

EXCESSIVE RUNOFF FROM HEAVY RAINFALL WILL CAUSE FLOODING OF SMALL
CREEKS AND STREAMS...HIGHWAYS AND UNDERPASSES. ADDITIONALLY...COUNTRY
ROADS AND FARMLANDS ALONG THE BANKS OF CREEKS...STREAMS AND OTHER LOW
LYING AREAS ARE SUBJECT TO FLOODING.

DO NOT DRIVE YOUR VEHICLE INTO AREAS WHERE THE WATER COVERS THE
ROADWAY. THE WATER DEPTH MAY BE TOO GREAT TO ALLOW YOUR CAR TO CROSS
SAFELY. MOVE TO HIGHER GROUND.

LAT...LON 4164 7084 4186 7094 4201 7068 4181 7053
TIME...MOT...LOC 1742Z 180DEG 0KT 4181 7074

$$
MLE
1 follow-up statement
000 
WGUS71 KBOX 241846
FFSBOX

FLASH FLOOD STATEMENT
NATIONAL WEATHER SERVICE TAUNTON MA
246 PM EDT TUE JUN 24 2008

MAC005-023-241855-
/O.EXP.KBOX.FF.W.0002.000000T0000Z-080624T1845Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
PLYMOUTH MA-BRISTOL MA-
246 PM EDT TUE JUN 24 2008

...THE FLASH FLOOD WARNING HAS EXPIRED FOR EXTREME EAST CENTRAL
BRISTOL AND SOUTHERN PLYMOUTH COUNTIES IN SOUTHEAST MASSACHUSETTS...

THUNDERSTORMS HAVE MOVED OUT OF THE WARNED AREA AT THIS 
TIME...THEREFORE THE FLASH FLOOD WARNING HAS BEEN ALLOWED TO 
EXPIRE.  ANY ADDITIONAL RAINFALL MAY RESULT IN MORE FLOODING LATER 
THIS AFTERNOON.  AN URBAN AND SMALL STREAM FLOOD ADVISORY REMAINS IN 
EFFECT FOR THE WARNED AREA.

LAT...LON 4164 7084 4186 7094 4201 7068 4181 7053
TIME...MOT...LOC 1845Z 180DEG 0KT 4181 7074

$$

RLG

The office that day

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

IssuedProductOfficeCountiesLasted
Jun 24, 1:53 AM EDTSevere Thunderstorm WarningBOXHampshire37 min
Jun 24, 2:30 AM EDTSevere Thunderstorm WarningBOXFranklin, Hampshire, Worcester45 min
Jun 24, 2:53 AM EDTSevere Thunderstorm WarningBOXWorcester52 min
Jun 24, 11:48 AM EDTSevere Thunderstorm WarningBOXPlymouth42 min
Jun 24, 12:10 PM EDTSpecial Marine WarningBOX65 min
Jun 24, 12:12 PM EDTSpecial Marine WarningBOX63 min
Jun 24, 12:54 PM EDTSevere Thunderstorm WarningBOXBristol13 min
Jun 24, 1:00 PM EDTSevere Thunderstorm WarningBOXBristol, Plymouth60 min
Jun 24, 1:03 PM EDTSpecial Marine WarningBOX57 min
Jun 24, 1:06 PM EDTSevere Thunderstorm WarningBOXBristol39 min
Jun 24, 1:27 PM EDTSevere Thunderstorm WarningBOXBristol33 min
Jun 24, 1:35 PM EDTSevere Thunderstorm WarningBOXBristol, Norfolk, Plymouth32 min
Jun 24, 1:38 PM EDTAreal Flood AdvisoryBOXBarnstable, Bristol, Plymouth3 hr
Jun 24, 1:53 PM EDTSpecial Marine WarningBOX67 min
Jun 24, 1:58 PM EDTSevere Thunderstorm WarningBOXBarnstable34 min
Jun 24, 2:01 PM EDTSevere Thunderstorm WarningBOXBristol, Norfolk, Plymouth59 min
Jun 24, 2:13 PM EDTSpecial Marine WarningBOX92 min
Jun 24, 2:31 PM EDTSevere Thunderstorm WarningBOXBarnstable59 min
Jun 24, 2:40 PM EDTFlash Flood WarningBOXBristol, Norfolk, Plymouth95 min
Jun 24, 2:45 PM EDTSevere Thunderstorm WarningBOXFranklin45 min
Jun 24, 2:47 PM EDTSevere Thunderstorm WarningBOXBristol22 min
Jun 24, 2:54 PM EDTSpecial Marine WarningBOX66 min
Jun 24, 3:37 PM EDTSpecial Marine WarningBOX53 min
Jun 24, 3:51 PM EDTSevere Thunderstorm WarningBOXEssex, Middlesex39 min
Jun 24, 3:57 PM EDTSevere Thunderstorm WarningBOXFranklin, Middlesex, Worcester46 min
Jun 24, 4:15 PM EDTSpecial Marine WarningBOX90 min
Jun 24, 4:19 PM EDTSevere Thunderstorm WarningBOXEssex, Middlesex, Worcester56 min
Jun 24, 4:41 PM EDTSevere Thunderstorm WarningBOXMiddlesex, Worcester24 min
Jun 24, 4:47 PM EDTAreal Flood AdvisoryBOXEssex, Middlesex, Suffolk3 hr
Jun 24, 4:59 PM EDTSevere Thunderstorm WarningBOXMiddlesex, Norfolk, Worcester31 min
Jun 24, 5:04 PM EDTSevere Thunderstorm WarningBOXEssex, Middlesex, Suffolk37 min
Jun 24, 5:22 PM EDTSevere Thunderstorm WarningBOXEssex, Middlesex, Norfolk, Plymouth, Suffolk38 min
Jun 24, 5:34 PM EDTSpecial Marine WarningBOX86 min
Jun 24, 5:36 PM EDTFlash Flood WarningBOXEssex, Middlesex, Norfolk, Suffolk24 min
Jun 24, 6:27 PM EDTSpecial Marine WarningBOX63 min
Jun 24, 6:56 PM EDTSpecial Marine WarningBOX64 min

Nearby

Flash Flood Warnings in Massachusetts, 2008Every flash flood warning in 2008

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.