Alert archive / Connecticut / Severe Thunderstorm Warnings in 2002

Severe Thunderstorm Warning 19, NWS Boston/Norton, MA

May 31, 2002Capitol Planning Region, Connecticut

NWS Boston/Norton, MA issued this severe thunderstorm warning at May 31, 2002, 5:20 PM EDT for Capitol Planning Region, Connecticut. It was in force for 40 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: May 31, 2002, 5:20 PM EDT (21:20 UTC)
Expired: May 31, 2002, 6:00 PM EDT
In force: 40 min
Issued by: NWS Boston/Norton, MA
Area: Whole counties

County Capitol Planning Region, CT

The radar

The Brookhaven radar (KOKX), 109 km from the middle of the area, began a volume at 21:21 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

Brookhaven, NY (KOKX), launched 12:00Z, 9.3 hours before the alert went out and 109 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-p

Temperature in red, dew point in green, the mixed-layer parcel dashed.

Hodograph

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: 5 J/kg
Mixed-layer CIN: -130 J/kg
Mixed-layer LCL: 663 m above ground
0-6 km bulk shear: 21 kt
0-1 km storm-relative helicity: 45 m²/s²
0-3 km storm-relative helicity: 60 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.0

Open this sounding in Storm Lab

The text

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

409 
WUUS51 KBOX 312120
SVRBOX
CTC003-312200-

BULLETIN - EAS ACTIVATION REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE TAUNTON MA
519 PM EDT FRI MAY 31 2002

THE NATIONAL WEATHER SERVICE IN TAUNTON HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...
  NORTHERN HARTFORD COUNTY IN NORTHERN CONNECTICUT
    INCLUDING WINDSOR LOCKS

* UNTIL 600 PM EDT.

* AT 517 PM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED   
  A SEVERE THUNDERSTORM 10 MILES WEST OF SIMSBURY...MOVING EAST AT   
  45 MPH.

* THE SEVERE THUNDERSTORM WILL BE NEAR...
  GRANBY AND SIMSBURY AROUND 530 PM EDT
  EAST GRANBY AROUND 535 PM EDT
  SUFFIELD AND WINDSOR LOCKS AROUND 540 PM EDT
  ENFIELD AROUND 545 PM EDT.

SEVERE THUNDERSTORMS PRODUCE LARGE HAIL AND/OR WIND STRONG ENOUGH TO
KNOCK DOWN TREES AND POWER LINES. MOVE INDOORS AND STAY AWAY FROM
WINDOWS.

A SEVERE THUNDERSTORM WATCH REMAINS IN EFFECT UNTIL 800 PM EDT FRIDAY
EVENING FOR NORTHERN CONNECTICUT AND SOUTHEASTERN MASSACHUSETTS AND 
SOUTHERN NEW HAMPSHIRE.

$$

GAF/AED

The office that day

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

Issued	Product	Office	Counties	Lasted
May 31, 4:00 PM EDT	Severe Thunderstorm Warning	BOX	Capitol Planning Region	45 min
May 31, 4:25 PM EDT	Severe Thunderstorm Warning	BOX	Capitol Planning Region	35 min
May 31, 5:41 PM EDT	Severe Thunderstorm Warning	BOX	Capitol Planning Region	49 min
May 31, 6:05 PM EDT	Severe Thunderstorm Warning	BOX	Northeastern Connecticut Planning Region	40 min
May 31, 6:29 PM EDT	Severe Thunderstorm Warning	BOX	Capitol Planning Region	46 min
May 31, 6:43 PM EDT	Severe Thunderstorm Warning	BOX	Northeastern Connecticut Planning Region	47 min

Nearby

Severe Thunderstorm Warnings in Connecticut, 2002 Every severe thunderstorm warning in 2002

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.