Alert archive / Massachusetts / Flash Flood Warnings in 1996
Flash Flood Warning 29, NWS Boston/Norton, MA
NWS Boston/Norton, MA issued this flash flood warning at Oct 20, 1996, 10:00 PM EDT for Norfolk County, Suffolk County, Massachusetts. It was in force for 8 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
- Oct 20, 1996, 10:00 PM EDT (02:00 UTC)
- Expired
- Oct 21, 1996, 6:00 AM EDT
- In force
- 8 hr
- Issued by
- NWS Boston/Norton, MA
- Area
- Whole counties
Counties Norfolk County, MA, Suffolk County, MA
The nearest sounding before it
Chatham, MA (KCHH), launched 00:00Z, 2.0 hours before the alert went out and 116 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
- 0 J/kg
- Mixed-layer CIN
- No buoyant parcel
- Mixed-layer LCL
- 643 m above ground
- 0-6 km bulk shear
- 43 kt
- 0-1 km storm-relative helicity
- 12 m²/s²
- 0-3 km storm-relative helicity
- 80 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted, in the capitals the NWS used until 2016.
000 TTAA00 KBOS 210200 FFWBOS MAC009-017-021-023-025-NHC011-211000- BULLETIN - EBS ACTIVATION REQUESTED FLASH FLOOD WARNING NATIONAL WEATHER SERVICE TAUNTON MA 1000 PM EDT SUN OCT 20 1996 THE NATIONAL WEATHER SERVICE IN TAUNTON HAS ISSUED A FLASH FLOOD WARNING EFFECTIVE UNTIL 600 AM EDT FOR PEOPLE IN THE FOLLOWING LOCATIONS... IN MASSACHUSETTS ...ESSEX COUNTY...MIDDLESEX COUNTY...NORFOLK COUNTY ...PLYMOUTH COUNTY...SUFFOLK COUNTY IN SOUTH NEW HAMPSHIRE ...HILLSBOROUGH COUNTY AS OF 950 PM...AREAS OF HEAVY RAIN CONTINUED TO MOVE ACROSS EASTERN MASSACHUSETTS AND PARTS OF SOUTHERN NEW HAMPSHIRE. RAINFALL TOTALS ACROSS THIS REGION WERE IN EXCESS OF 3.5 INCHES. THIS RAINFALL HAS CAUSED WIDESPREAD PONDING AND STREET FLOODING ACROSS THE AREA...AND HAS CAUSED PROBLEMS WITH AT LEAST TWO DAMS IN EASTERN MASSACHUSETTS. THE RAIN IS EXPECTED TO CONTINUE THROUGH THE NIGHT. ANOTHER 1 TO 2 INCHES OF RAIN IS EXPECTED BETWEEN 8 PM TONIGHT AND 8 AM MONDAY MORNING. THIS WILL BRING RAINFALL TOTALS IN THE WARNING AREA TO BETWEEN 4 AND 8 INCHES. THUS...FLOODING PROBLEMS ARE EXPECTED TO CONTINUE THROUGH THE NIGHT IN THIS WARNING AREA. A FLASH FLOOD WARNING MEANS THAT FLOODING IS OCCURRING OR IS IMMINENT. MOST FLASH FLOOD DEATHS OCCUR IN AUTOMOBILES. DO NOT ATTEMPT TO CROSS BRIDGES...DIPS...OR LOW SPOTS IF WATER COVERS THE ROADWAY. NEVER TRY TO CROSS A FLOWING STREAM...EVEN A SMALL ONE...ON FOOT. TO ESCAPE RISING WATER MOVE UP TO HIGHER GROUND. WTB
The office that day
Everything else NWS Boston/Norton, MA issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Oct 20, 8:39 PM EDT | Flash Flood Warning | BOX | Middlesex | 4 hr |
| Oct 20, 9:34 PM EDT | Flash Flood Warning | BOX | Plymouth | 6 hr |
| Oct 20, 9:45 PM EDT | Flash Flood Warning | BOX | Middlesex | 4 hr |
| Oct 20, 10:00 PM EDT | Flash Flood Warning | BOX | Essex, Middlesex | 8 hr |
| Oct 20, 10:00 PM EDT | Flash Flood Warning | BOX | Plymouth | 8 hr |
| Oct 21, 2:07 AM EDT | Flash Flood Warning | BOX | Middlesex | 8 hr |
| Oct 21, 6:01 AM EDT | Flash Flood Warning | BOX | Essex, Middlesex, Norfolk, Suffolk | 6 hr |
| Oct 21, 6:01 AM EDT | Flash Flood Warning | BOX | Plymouth | 6 hr |
| Oct 21, 10:40 AM EDT | Flash Flood Warning | BOX | Essex, Middlesex | 12 hr |
| Oct 21, 10:40 AM EDT | Flash Flood Warning | BOX | Norfolk, Suffolk | 12 hr |
| Oct 21, 10:40 AM EDT | Flash Flood Warning | BOX | Plymouth | 12 hr |
Nearby
Flash Flood Warnings in Massachusetts, 1996Every flash flood warning in 1996
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.