Alert archive / Massachusetts / Flash Flood Warnings in 1990
Flash Flood Warning 2, NWS Boston/Norton, MA
NWS Boston/Norton, MA issued this flash flood warning at Jul 24, 1990, 3:00 PM EDT for Bristol County, Plymouth County, Massachusetts. It was in force for 4 hr.
The area
The counties it named.
The facts
- Issued
- Jul 24, 1990, 3:00 PM EDT (19:00 UTC)
- Expired
- Jul 24, 1990, 7:00 PM EDT
- In force
- 4 hr
- Issued by
- NWS Boston/Norton, MA
- Area
- Whole counties
Counties Bristol County, MA, Plymouth County, MA
The radar
The WSR-88D network and its archive begin in 1991, so there is no radar volume for this alert.
The nearest sounding before it
Chatham, MA (KCHH), launched 12:00Z, 7.0 hours before the alert went out and 81 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
- 418 J/kg
- Mixed-layer CIN
- -36 J/kg
- Mixed-layer LCL
- 588 m above ground
- 0-6 km bulk shear
- 20 kt
- 0-1 km storm-relative helicity
- 35 m²/s²
- 0-3 km storm-relative helicity
- 45 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
The text of this product is not in the archive. The NWS text archive before 2002 is incomplete.
The office that day
Everything else NWS Boston/Norton, MA issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jul 24, 12:23 PM EDT | Flash Flood Warning | BOX | Bristol, Plymouth | 3 hr |
Nearby
Flash Flood Warnings in Massachusetts, 1990Every flash flood warning in 1990
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.