Alert archive / Connecticut / Severe Thunderstorm Warnings in 2001

Severe Thunderstorm Warning 12, NWS New York, NY

June 11, 2001Lower Connecticut River Valley Planning Region, Connecticut

NWS New York, NY issued this severe thunderstorm warning at Jun 11, 2001, 10:30 PM EDT for Lower Connecticut River Valley 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: Jun 11, 2001, 10:30 PM EDT (02:30 UTC)
Expired: Jun 11, 2001, 11:15 PM EDT
In force: 45 min
Issued by: NWS New York, NY
Area: Whole counties

County Lower Connecticut River Valley Planning Region, CT

The radar

The Brookhaven radar (KOKX), 72 km from the middle of the area, began a volume at 02:30 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, 2.5 hours before the alert went out and 72 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: 703 J/kg
Mixed-layer CIN: -94 J/kg
Mixed-layer LCL: 1131 m above ground
0-6 km bulk shear: 37 kt
0-1 km storm-relative helicity: 100 m²/s²
0-3 km storm-relative helicity: 201 m²/s²
Significant tornado parameter: 0.3
Supercell composite: 5.1

Open this sounding in Storm Lab

The text

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

000 
WUUS51 KOKX 120230
SVROKX
CTC007-120315-

BULLETIN - EAS ACTIVATION REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE NEW YORK NY
1030 PM EDT MON JUN 11 2001

THE NATIONAL WEATHER SERVICE IN UPTON NY HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...
  NORTHERN MIDDLESEX COUNTY IN SOUTHERN CONNECTICUT

* UNTIL 1115 PM EDT

* AT 1030 PM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
  SEVERE THUNDERSTORM OVER MIDDLETOWN...OR ABOUT 2 MILES SOUTH OF
  MIDDLETOWN...MOVING EAST AT 20 MPH.

* THE SEVERE THUNDERSTORM WILL BE NEAR...
RURAL CENTRAL MIDDLESEX COUNTY AT 1040 PM EDT
RURAL EASTERN MIDDLESEX COUNTY AT 1100 PM EDT

$$

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

A SEVERE THUNDERSTORM WATCH REMAINS IN EFFECT UNTIL 1100 PM EDT
MONDAY EVENING FOR SOUTHERN CONNECTICUT AND NORTHEAST NEW JERSEY AND
SOUTHEAST NEW YORK.

LAT...LON 4161 7276 4143 7277 4142 7244 4147 7228
          4159 7246


SDR

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 Jun 11, 10:03 PM EDT, 27 minutes earlier.

Area forecast discussion, Jun 11, 10:03 PM EDT, 27 minutes before

AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE NEW YORK NY
1003 PM EDT MON JUN 11 2001

VERY BUSY NIGHT BUT MOST STORMS JUST FALLING SHORT OF SEVERE
CRITERIA. SFC LOW MOVING INTO NWRN CT. AXIS OF MOST UNSTABLE AIR
STILL EXTENDS ACROSS MOST OF CWA. WILL HAVE TO CONTEND WITH TSTMS
FOR ANOTHER COUPLE OF HOURS OR SO. WILL TRY TO GET MARINE OUT ASAP.

ANY OTHER PRODUCTS WILL HAVE TO WAIT FOR NOW.

MARINE: WINDS UP NOW AHEAD OF FRONT BUT SHOULD DROP SOMEWHAT
OVERNIGHT. NO FLAGS.

.OKX...
CT...SVR TSTM WATCH CTZ005>007-009>011 TIL 03Z.
NJ...SVR TSTM WATCH NJZ002>005 TIL 03Z.
NY...SVR TSTM WATCH NYZ067>071 TIL 03Z.
MARINE...NONE.

PW

In the hours before

Local storm report, Jun 11, 9:10 PM EDT, 1 hour 20 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE NEW YORK NY
910 PM EDT MON JUN 11 2001

TIME(EDT)  .....CITY LOCATION..... STATE  ...EVENT/REMARKS...
           ....COUNTY LOCATION....

0820 PM    ELIZABETH                 NJ
06/11/01   UNION                          LIGHTNING STRUCK HOUSE AND
                                          DAMAGED CHIMNEY...REPORTED
                                          BY SPOTTER

0837 PM    NAUGATUCK                 CT   WIND DAMAGE
06/11/01   NEW HAVEN                      TREES AND POWER LINES
                                          DOWNED...REPORT BY LOCAL
                                          PD.

The office that day

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

Issued	Product	Office	Counties	Lasted
Jun 11, 8:30 PM EDT	Severe Thunderstorm Warning	OKX	Naugatuck Valley Planning Region	45 min
Jun 11, 11:06 PM EDT	Severe Thunderstorm Warning	OKX	Lower Connecticut River Valley Planning Region, Southeastern Connecticut Planning Region	39 min

Nearby

Severe Thunderstorm Warnings in Connecticut, 2001 Every severe thunderstorm warning in 2001

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.