Alert archive / Connecticut / Severe Thunderstorm Warnings in 2000

Severe Thunderstorm Warning 76, NWS New York, NY

August 10, 2000Southeastern Connecticut Planning Region, Connecticut

NWS New York, NY issued this severe thunderstorm warning at Aug 10, 2000, 2:45 AM EDT for Southeastern Connecticut Planning Region, Connecticut. It was in force for 45 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: Aug 10, 2000, 2:45 AM EDT (06:45 UTC)
Expired: Aug 10, 2000, 3:30 AM EDT
In force: 45 min
Issued by: NWS New York, NY
Area: Whole counties

County Southeastern Connecticut Planning Region, CT

The radar

The Boston radar (KBOX), 94 km from the middle of the area, began a volume at 06:48 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 00:00Z, 6.8 hours before the alert went out and 96 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: 805 J/kg
Mixed-layer CIN: -119 J/kg
Mixed-layer LCL: 1157 m above ground
0-6 km bulk shear: 27 kt
0-1 km storm-relative helicity: 88 m²/s²
0-3 km storm-relative helicity: 83 m²/s²
Significant tornado parameter: 0.1
Supercell composite: 1.8

Open this sounding in Storm Lab

The text

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

000 
WUUS51 KOKX 100648
SVRNYC
CTC011-100730-

BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE NEW YORK NY
245 AM EDT THU AUG 10 2000

THE NATIONAL WEATHER SERVICE IN UPTON NY HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR THE FOLLOWING COUNTY...

  IN SOUTHERN CONNECTICUT...
     NEW LONDON...

* UNTIL 330 AM EDT...

* AT 245 AM A LINE OF SEVERE THUNDERSTORMS WERE LOCATED ALONG A LINE
  EXTENDING EXTREME NORTHWEST NEW LONDON COUNTY TO CENTRAL MIDDLESEX 
  COUNTY...MOVING SOUTHEAST AROUND 20 MPH.

* SEVERE THUNDERSTORMS SHOULD BE IN
  THE VICINITY OF...
  LEBANON AROUND 255 AM...
  NORTH LYME...SALEM AROUND 310 AM...
  NORWICH AROUND 325 AM...
  GALES FERRY...LEDYARD CENTER...WATERFORD AROUND 330 AM...

REMEMBER A SEVERE THUNDERSTORM CAN PRODUCE DAMAGING WINDS IN EXCESS
OF 58 MPH...LARGE HAIL...DEADLY LIGHTNING AND VERY HEAVY RAIN.

$$

REPORT SEVERE WEATHER TO THE NEAREST LAW ENFORCEMENT AGENCY. THEY
WILL RELAY YOUR REPORT TO THE NATIONAL WEATHER SERVICE FORECAST
OFFICE IN UPTON NY.

LAT...LON 4179 7237 4143 7245 4127 7227 4148 7190

What forecasters said that day

The local office's own words before this severe thunderstorm warning went out, as it sent them, from the Iowa Environmental Mesonet's archive of National Weather Service text.

NWS New York, NY wrote its last area forecast discussion before this severe thunderstorm warning went out at Aug 9, 8:35 PM EDT, 6 hours 10 minutes earlier.

Area forecast discussion, Aug 9, 8:35 PM EDT, 6 hours 10 minutes before

AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE NEW YORK NY
835 PM EDT WED AUG 9 2000

RADAR AND STLT PICS SHOWED THAT THE BULK OF THE TSTMS ALG THE CDFNT
XTDD ACRS WRN AND CNTRL NY STA JUST N OF THE NY-PA BRDR. H7 ZONAL FLO
WUD TAKE MOST OF THEM N OF THE FCST AREA OVRNGT. HWVR ANOTHER BATCH
WHICH DVLPD AT THE BASE OF THE UPR TROF...ASSOCD WITH A VORT
MAX...WERE TRACKING ACRS NWRN PA. THESE WUD AFFECT THE RGN AFT MIDN
IF THEY HOLD TO%GETHER. SO THE OVRNGT FCST OF SCT TSTMS STILL LKS
OK...BUT WL INDICATE THEIR ARRIVAL AFT MIDN IN THE UPDTD ZNS.

REST OF THE FCST PDS LOOK GOOD AND WL MAKE NO CHGS.

.OKX...NONE.

EY

The office that day

Everything else NWS New York, NY issued on the same UTC day.

Issued	Product	Office	Counties	Lasted
Aug 10, 1:16 AM EDT	Severe Thunderstorm Warning	OKX	Greater Bridgeport Planning Region	44 min
Aug 10, 1:57 AM EDT	Severe Thunderstorm Warning	OKX	Greater Bridgeport Planning Region, Naugatuck Valley Planning Region	48 min
Aug 10, 2:34 AM EDT	Severe Thunderstorm Warning	OKX	Lower Connecticut River Valley Planning Region	41 min
Aug 10, 3:55 AM EDT	Severe Thunderstorm Warning	OKX	Southeastern Connecticut Planning Region	50 min

Nearby

Severe Thunderstorm Warnings in Connecticut, 2000 Every severe thunderstorm warning in 2000

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.