Alert archive / Rhode Island / Severe Thunderstorm Warnings in 1995

Severe Thunderstorm Warning 87, NWS Boston/Norton, MA

August 4, 1995Providence County, Rhode Island

NWS Boston/Norton, MA issued this severe thunderstorm warning at Aug 4, 1995, 5:45 PM EDT for Providence County, Rhode Island. It was in force for 45 min.

The area

The counties it named.

The facts

Issued
Aug 4, 1995, 5:45 PM EDT (21:45 UTC)
Expired
Aug 4, 1995, 6:30 PM EDT
In force
45 min
Issued by
NWS Boston/Norton, MA
Area
Whole counties

County Providence County, RI

The radar

The Boston radar (KBOX), 38 km from the middle of the area, began a volume at 21:49 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, 9.8 hours before the alert went out and 135 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 1995-08-04Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 16 joules per kilogram.LCLLFCEL10008507005003002001001 km2 km3 km6 km9 km12 km15 km-30°-20°-10°0°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Chatham, MA at 12:00Z on 1995-08-04The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 98 square meters per square second.1939Sfc1 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
16 J/kg
Mixed-layer CIN
-132 J/kg
Mixed-layer LCL
622 m above ground
0-6 km bulk shear
25 kt
0-1 km storm-relative helicity
98 m²/s²
0-3 km storm-relative helicity
79 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.2

Open this sounding in Storm Lab

The text

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

000 
TTAA00 KBOS 042145 RRA
SVRBOS
RIC007-042230-
 
BULLETIN - EBS ACTIVATION REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE TAUNTON MA
545 PM EDT FRI AUG 4 1995
 
THE NATIONAL WEATHER SERVICE IN TAUNTON HAS ISSUED A
SEVERE THUNDERSTORM WARNING EFFECTIVE UNTIL  630 PM EDT
FOR PEOPLE IN THE FOLLOWING LOCATION...
 
IN NORTH RHODE ISLAND
 
   ...EASTERN PROVIDENCE COUNTY
 
A SEVERE THUNDERSTORM NEAR SMITHFIELD AND JOHNSTON AT 545 PM WILL AFFECT
COMMUNITIES IN EASTERN PROVIDENCE COUNTY INCLUDING THE PROVIDENCE METRO
AREA.
 
IF THREATENING WEATHER APPROACHES...GO TO A SAFE PLACE IMMEDIATELY.
IF SEVERE WEATHER OCCURS...ASK YOUR NEAREST LAW ENFORCEMENT AGENCY TO
RELAY YOUR SEVERE WEATHER REPORT TO THE NATIONAL jWEATHER SERVICE.

The office that day

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

IssuedProductOfficeCountiesLasted
Aug 4, 4:53 PM EDTSevere Thunderstorm WarningBOXProvidence52 min
Aug 4, 6:03 PM EDTSevere Thunderstorm WarningBOXKent42 min
Aug 4, 6:03 PM EDTSevere Thunderstorm WarningBOXBristol42 min
Aug 4, 6:25 PM EDTSevere Thunderstorm WarningBOXKent, Washington50 min

Nearby

Severe Thunderstorm Warnings in Rhode Island, 1995Every severe thunderstorm warning in 1995

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.