Alert archive / Massachusetts / Flash Flood Warnings in 2003
Flash Flood Warning 15, NWS Boston/Norton, MA
NWS Boston/Norton, MA issued this flash flood warning at Aug 16, 2003, 9:25 PM EDT for Plymouth County, Massachusetts. It was in force for 110 min. No storm report in the archive falls inside the area while it was in force.
The area
The counties it named.
The facts
- Issued
- Aug 16, 2003, 9:25 PM EDT (01:25 UTC)
- Expired
- Aug 16, 2003, 11:15 PM EDT
- In force
- 110 min
- Issued by
- NWS Boston/Norton, MA
- Area
- Whole counties
County Plymouth County, MA
The radar
The Boston radar (KBOX), 33 km from the middle of the area, began a volume at 01:28 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 00:00Z, 1.4 hours before the alert went out and 73 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
- 942 J/kg
- Mixed-layer CIN
- -81 J/kg
- Mixed-layer LCL
- 1162 m above ground
- 0-6 km bulk shear
- 11 kt
- 0-1 km storm-relative helicity
- 50 m²/s²
- 0-3 km storm-relative helicity
- 50 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted, in the capitals the NWS used until 2016.
000 WGUS51 KBOX 170124 FFWBOX MAC023-170315- BULLETIN - EAS ACTIVATION REQUESTED FLASH FLOOD WARNING NATIONAL WEATHER SERVICE TAUNTON MA 925 PM EDT SAT AUG 16 2003 THE NATIONAL WEATHER SERVICE IN TAUNTON HAS ISSUED A * FLASH FLOOD WARNING FOR... NORTHERN PLYMOUTH COUNTY IN SOUTHEAST MASSACHUSETTS * UNTIL 1115 PM EDT. * AT 918 PM EDT...THUNDERSTORMS HAD DUMPED OVER 2.5 INCHES OF RAIN IN THE MARSHFIELD PEMBROKE HANOVER AREA THIS EVENING. THUNDERSTORMS ARE LIKELY TO CONTINUE FOR AT LEAST ANOTHER HOUR. RAINFALL BY 11 PM TONIGHT MAY BE CLOSE TO 5 INCHES IN A FEW SPOTS NEAR MARSHFIELD. THIS WILL CAUSE POTENTIALLY DANGEROUS FLASH FLOODING. A FLASH FLOOD WARNING MEANS THAT FLOODING IS IMMINENT OR OCCURRING. IF YOU ARE IN THE WARNING AREA MOVE TO HIGHER GROUND IMMEDIATELY. PEOPLE THAT MAY BE CAMPING OR HIKING IN THE WARNING AREA MUST HEAD FOR A STURDY SHELTER NOW. BE SURE TO STAY AWAY FROM STREAMS AND LOW WATER AREAS. BE ESPECIALLY CAUTIOUS AT NIGHT WHEN IT IS HARDER TO RECOGNIZE THE DANGERS OF FLASH FLOODS. NEVER TRY TO CROSS A FLOODED ROADWAY. THE ROAD COULD BE DAMAGED OR WASHED OUT. MOST FLASH FLOOD DEATHS OCCUR IN AUTOMOBILES. NEVER ATTEMPT TO CROSS BRIDGES OR ROADS WHERE WATER COVERS THE ROADWAY. IT ONLY TAKES A FOOT OR TWO OF WATER TO WASH MOST CARS AWAY. FLASH FLOODING OF POOR DRAINAGE AREAS IS LIKELY DUE TO THE TORRENTIAL RAINFALL. CULVERTS ALONG ROADSIDES MAY BE WASHED OUT. STANDING WATER ON ROADWAYS AND ESPECIALLY UNDERPASSES MAY RISE TO SEVERAL FEET IN DEPTH SUBMERGING MOST VEHICLES. $$ LAT...LON 4209 7094 4200 7091 4201 7062 4218 7065
1 follow-up statement
000 WGUS71 KBOX 170156 FFSBOX MAC023-170245- FLASH FLOOD STATEMENT NATIONAL WEATHER SERVICE TAUNTON MA 945 PM EDT SAT AUG 16 2003 ...A FLASH FLOOD WARNING CONTINUES IN EFFECT THROUGH 1115 PM FOR THE MARSHFIELD AREA OF NORTHERN PLYMOUTH COUNTY... POLICE AT 935 PM REPORTED FOUR TREES DOWN AS WELL AS DOWNED WIRES AND FLOODING HIGHWAYS IN THE MARSHFIELD AREA. A RETIRED NATIONAL WEATHER FORECASTER OBSERVED OVER TWO AND ONE HALF INCHES OF RAIN THIS EVENING AS WELL AS HALF INCH DIAMETER HAIL JUST BEFORE 915 PM. RADAR ESTIMATES THAT OVER 4 INCHES MAY HAVE ALREADY FALLEN IN THE MARSHFIELD AREA THIS EVENING. AT 950 PM...THERE HAS BEEN A SLIGHT SOUTHWARD DRIFT TO THE EXCESSIVE RAINS WHICH WOULD FAVOR THE HEAVIEST AXIS OF RAINFALL BETWEEN 10 AND 11 PM TO OCCUR FROM MARSHFIELDS SOUTHERN LIMITS TO PLYMPTON AND KINGSTON. THIS POTENT SITUATION HAS BEEN SET UP ALONG THE BOUNDARY BETWEEN A SLIGHTLY COOLER NORTHEAST FLOW NORTH OF MARSHFIELD AND A VERY WET SOUTHWEST FLOW ALONG THE SOUTH COAST. PEOPLE THAT MAY BE CAMPING OR HIKING IN THE WARNING AREA MUST BE SURE TO STAY AWAY FROM STREAMS AND LOW WATER AREAS. BE ESPECIALLY CAUTIOUS AT NIGHT WHEN IT IS HARDER TO RECOGNIZE THE DANGERS OF FLASH FLOODS. NEVER TRY TO CROSS A FLOODED ROADWAY. THE ROAD COULD BE DAMAGED OR WASHED OUT. FLASH FLOODING OF POOR DRAINAGE AREAS WILL OCCUR DUE TO THE TORRENTIAL RAINFALL. CULVERTS ALONG ROADSIDES MAY BE WASHED OUT. STANDING WATER ON ROADWAYS AND ESPECIALLY UNDERPASSES MAY RISE TO SEVERAL FEET IN DEPTH SUBMERGING MOST VEHICLES. MOST FLASH FLOOD DEATHS OCCUR IN AUTOMOBILES. NEVER ATTEMPT TO CROSS BRIDGES OR ROADS WHERE WATER COVERS THE ROADWAY. IT ONLY TAKES A FOOT OR TWO OF WATER TO WASH MOST CARS AWAY. $$ DRAG
The office that day
Everything else NWS Boston/Norton, MA issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Aug 16, 8:55 PM EDT | Severe Thunderstorm Warning | BOX | Plymouth | 20 min |
Nearby
Flash Flood Warnings in Massachusetts, 2003Every flash flood warning in 2003
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.