Alert archive / Massachusetts / Flash Flood Warnings in 2003
Flash Flood Warning 16, NWS Boston/Norton, MA
NWS Boston/Norton, MA issued this flash flood warning at Aug 22, 2003, 6:30 PM EDT for Middlesex County, Norfolk County, Suffolk County, Massachusetts. It was in force for 2 hr. 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 22, 2003, 6:30 PM EDT (22:30 UTC)
- Expired
- Aug 22, 2003, 8:30 PM EDT
- In force
- 2 hr
- Issued by
- NWS Boston/Norton, MA
- Area
- Whole counties
Counties Middlesex County, MA, Norfolk County, MA, Suffolk County, MA
The radar
The Boston radar (KBOX), 43 km from the middle of the area, began a volume at 22:30 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, 10.5 hours before the alert went out and 127 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
- 629 J/kg
- Mixed-layer CIN
- -158 J/kg
- Mixed-layer LCL
- 909 m above ground
- 0-6 km bulk shear
- 11 kt
- 0-1 km storm-relative helicity
- 37 m²/s²
- 0-3 km storm-relative helicity
- 5 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 222231
FFWBOX
MAC017-021-025-230030-
BULLETIN - EAS ACTIVATION REQUESTED
FLASH FLOOD WARNING
NATIONAL WEATHER SERVICE TAUNTON MA
630 PM EDT FRI AUG 22 2003
THE NATIONAL WEATHER SERVICE IN TAUNTON HAS ISSUED A
* FLASH FLOOD WARNING FOR...
SOUTHEAST MIDDLESEX COUNTY IN EASTERN MASSACHUSETTS
INCLUDING SOMERVILLE...NEWTON...CAMBRIDGE
NORFOLK COUNTY IN EASTERN MASSACHUSETTS
INCLUDING QUINCY...BROOKLINE
SUFFOLK COUNTY IN EASTERN MASSACHUSETTS
INCLUDING BOSTON
* UNTIL 830 PM EDT.
* AT 627 PM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED
THUNDERSTORMS WITH TORRENTIAL RAINFALL EXTENDING ACROSS SOUTHEAST
MIDDLESEX COUTY...MOVING EAST AT 25 MPH. URBAN FLASH FLOODING IS LIKELY
AS THE STORMS MOVE THROUGH THE AREA.
A FLASH FLOOD WARNING MEANS THAT FLOODING IS IMMINENT OR OCCURRING.
IF YOU ARE IN THE WARNING AREA MOVE TO HIGHER GROUND IMMEDIATELY.
$$
LAT...LON 4220 7082 4220 7095 4223 7124 4242 7123
4244 7097 4226 7094 4223 7087 4225 7079
4222 7077The office that day
Everything else NWS Boston/Norton, MA issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Aug 22, 4:08 PM EDT | Severe Thunderstorm Warning | BOX | Franklin, Hampshire, Worcester | 52 min |
| Aug 22, 4:59 PM EDT | Severe Thunderstorm Warning | BOX | Middlesex | 46 min |
| Aug 22, 5:16 PM EDT | Severe Thunderstorm Warning | BOX | Middlesex, Worcester | 44 min |
| Aug 22, 5:50 PM EDT | Special Marine Warning | BOX | 115 min | |
| Aug 22, 5:50 PM EDT | Special Marine Warning | BOX | 115 min | |
| Aug 22, 5:51 PM EDT | Special Marine Warning | BOX | 22 hr | |
| Aug 22, 5:51 PM EDT | Special Marine Warning | BOX | 22 hr | |
| Aug 22, 5:55 PM EDT | Severe Thunderstorm Warning | BOX | Middlesex, Norfolk, Suffolk, Worcester | 65 min |
| Aug 22, 6:56 PM EDT | Severe Thunderstorm Warning | BOX | Bristol, Norfolk, Plymouth | 49 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.