Alert archive / Connecticut / Severe Thunderstorm Warnings in 2012
Severe Thunderstorm Warning 39, NWS New York, NY
NWS New York, NY issued this severe thunderstorm warning at Jul 18, 2012, 12:33 PM EDT for Greater Bridgeport Planning Region, Connecticut; Westchester County, New York. It was in force for 42 min. 2 reports came from inside the area while it was in force.
The area
The outline as issued, with what was reported inside it.
The facts
- Issued
- Jul 18, 2012, 12:33 PM EDT (16:33 UTC)
- Expired
- Jul 18, 2012, 1:15 PM EDT
- In force
- 42 min
- Issued by
- NWS New York, NY
- Area
- Storm-based polygon
Counties Greater Bridgeport Planning Region, CT, Westchester County, NY
The radar
The Brookhaven radar (KOKX), 64 km from the middle of the area, began a volume at 16:35 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.
What was reported inside it
| Time | Report | Where | Remark |
|---|---|---|---|
| Jul 18, 12:35 PM EDT | HAIL 1 | White Plains, NY | TIME ESTIMATED FROM RADAR. |
| Jul 18, 12:44 PM EDT | HAIL 0.75 | White Plains, NY | TRAINED SPOTTER |
Local storm reports filed while the alert was in force, from inside its polygon or its counties.
The watch it was issued in
The SPC watch in force over the same counties when this warning went out.
| Issued | Product | Office | Lasted |
|---|---|---|---|
| Jul 18, 12:20 PM EDT | Severe Thunderstorm Watch | SPC | 9 hr |
The nearest sounding before it
Brookhaven, NY (KOKX), launched 12:00Z, 4.6 hours before the alert went out and 64 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
- 2129 J/kg
- Mixed-layer CIN
- -147 J/kg
- Mixed-layer LCL
- 1491 m above ground
- 0-6 km bulk shear
- 30 kt
- 0-1 km storm-relative helicity
- 82 m²/s²
- 0-3 km storm-relative helicity
- 95 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted, in the capitals the NWS used until 2016.
313
WUUS51 KOKX 181633
SVROKX
CTC001-NYC119-181715-
/O.NEW.KOKX.SV.W.0039.120718T1633Z-120718T1715Z/
BULLETIN - EAS ACTIVATION REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE NEW YORK NY
1233 PM EDT WED JUL 18 2012
THE NATIONAL WEATHER SERVICE IN UPTON NY HAS ISSUED A
* SEVERE THUNDERSTORM WARNING FOR...
FAIRFIELD COUNTY IN SOUTHERN CONNECTICUT...
WESTCHESTER COUNTY IN SOUTHEAST NEW YORK...
* UNTIL 115 PM EDT...
* AT 1230 PM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
SEVERE THUNDERSTORM CAPABLE OF PRODUCING DAMAGING WINDS IN EXCESS
OF 60 MPH. THIS STORM WAS LOCATED NEAR SCARSDALE...OR NEAR
WHITE PLAINS. THIS STORM WAS MOVING EAST AT 10 MPH.
* OTHER LOCATIONS IN THE WARNING INCLUDE BUT ARE NOT LIMITED TO
HARRISON...WILTON...WESTPORT...NORWALK...NEW CANAAN...TARRYTOWN...
NORTH TARRYTOWN...HAWTHORNE AND DOBBS FERRY
PRECAUTIONARY/PREPAREDNESS ACTIONS...
THIS IS A DANGEROUS STORM. IF YOU ARE IN ITS PATH...PREPARE
IMMEDIATELY FOR DAMAGING WINDS...DESTRUCTIVE HAIL...AND DEADLY CLOUD
TO GROUND LIGHTNING. PEOPLE OUTSIDE SHOULD MOVE TO A SHELTER...
PREFERABLY INSIDE A STRONG BUILDING BUT AWAY FROM WINDOWS.
IN ADDITION TO LARGE HAIL AND DAMAGING WINDS...CONTINUOUS CLOUD TO
GROUND LIGHTNING IS OCCURRING WITH THIS STORM. MOVE INDOORS
IMMEDIATELY! LIGHTNING IS ONE OF NATURES NUMBER ONE KILLERS.
REMEMBER...IF YOU CAN HEAR THUNDER...YOU ARE CLOSE ENOUGH TO BE
STRUCK BY LIGHTNING.
A SEVERE THUNDERSTORM WATCH REMAINS IN EFFECT UNTIL 900 PM WEDNESDAY
EVENING FOR SOUTHERN CONNECTICUT AND NORTHEAST NEW JERSEY AND
SOUTHEAST NEW YORK.
&&
LAT...LON 4091 7389 4110 7388 4124 7340 4111 7331
4110 7335 4106 7338 4104 7342 4105 7344
4099 7358 4101 7359 4099 7363 4099 7361
4097 7362 4099 7365 4093 7370 4090 7384
TIME...MOT...LOC 1633Z 168DEG 2KT 4101 7377
$$
FIG2 follow-up statements
853
WWUS51 KOKX 181655
SVSOKX
SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE NEW YORK NY
1255 PM EDT WED JUL 18 2012
CTC001-NYC119-181715-
/O.CON.KOKX.SV.W.0039.000000T0000Z-120718T1715Z/
WESTCHESTER NY-FAIRFIELD CT-
1255 PM EDT WED JUL 18 2012
...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 115 PM EDT
FOR SOUTHERN FAIRFIELD AND WESTCHESTER COUNTIES...
AT 1254 PM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR CONTINUED TO
INDICATE A SEVERE THUNDERSTORM CAPABLE OF PRODUCING DAMAGING WINDS IN
EXCESS OF 60 MPH. THIS STORM WAS LOCATED NEAR WHITE PLAINS. THIS
STORM WAS NEARLY STATIONARY.
OTHER LOCATIONS IN THE WARNING INCLUDE BUT ARE NOT LIMITED TO
HARTSDALE AND NORWALK
PRECAUTIONARY/PREPAREDNESS ACTIONS...
A SEVERE THUNDERSTORM WATCH REMAINS IN EFFECT UNTIL 900 PM WEDNESDAY
EVENING FOR SOUTHERN CONNECTICUT AND NORTHEAST NEW JERSEY AND
SOUTHEAST NEW YORK.
&&
LAT...LON 4091 7380 4104 7384 4113 7348 4109 7341
4105 7345 4106 7343 4099 7358 4101 7359
4099 7363 4099 7361 4097 7362 4099 7365
4093 7370 4090 7384
TIME...MOT...LOC 1655Z 168DEG 2KT 4102 7377
$$
FIG455
WWUS51 KOKX 181714
SVSOKX
SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE NEW YORK NY
114 PM EDT WED JUL 18 2012
CTC001-NYC119-181724-
/O.EXP.KOKX.SV.W.0039.000000T0000Z-120718T1715Z/
WESTCHESTER NY-FAIRFIELD CT-
114 PM EDT WED JUL 18 2012
...THE SEVERE THUNDERSTORM WARNING FOR SOUTHERN FAIRFIELD AND
WESTCHESTER COUNTIES WILL EXPIRE AT 115 PM EDT...
THE SEVERE THUNDERSTORMS HAVE MOVED OVER THE AREA WATERS...THEREFORE
WILL ALLOW THE WARNING TO EXPIRE.
A SEVERE THUNDERSTORM WATCH REMAINS IN EFFECT UNTIL 900 PM WEDNESDAY
EVENING FOR SOUTHERN CONNECTICUT AND NORTHEAST NEW JERSEY AND
SOUTHEAST NEW YORK.
LAT...LON 4091 7380 4104 7384 4113 7348 4109 7341
4105 7345 4106 7343 4099 7358 4101 7359
4099 7363 4099 7361 4097 7362 4099 7365
4093 7370 4090 7384
TIME...MOT...LOC 1714Z 168DEG 2KT 4103 7377
$$The office that day
Everything else NWS New York, NY issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jul 18, 12:51 PM EDT | Areal Flood Advisory | OKX | Greater Bridgeport Planning Region | 54 min |
| Jul 18, 2:26 PM EDT | Severe Thunderstorm Warning | OKX | Greater Bridgeport Planning Region, Naugatuck Valley Planning Region | 34 min |
| Jul 18, 2:42 PM EDT | Areal Flood Advisory | OKX | Lower Connecticut River Valley Planning Region, Naugatuck Valley Planning Region, Southeastern Connecticut Planning Region | 84 min |
| Jul 18, 2:44 PM EDT | Severe Thunderstorm Warning | OKX | Greater Bridgeport Planning Region, Lower Connecticut River Valley Planning Region, Naugatuck Valley Planning Region | 55 min |
| Jul 18, 2:48 PM EDT | Areal Flood Advisory | OKX | Greater Bridgeport Planning Region | 70 min |
| Jul 18, 2:55 PM EDT | Areal Flood Advisory | OKX | Greater Bridgeport Planning Region | 72 min |
| Jul 18, 2:55 PM EDT | Severe Thunderstorm Warning | OKX | Southeastern Connecticut Planning Region | 65 min |
| Jul 18, 2:57 PM EDT | Severe Thunderstorm Warning | OKX | Greater Bridgeport Planning Region | 33 min |
| Jul 18, 4:10 PM EDT | Severe Thunderstorm Warning | OKX | Southeastern Connecticut Planning Region | 24 min |
| Jul 18, 6:49 PM EDT | Special Weather Statement | OKX | 56 min | |
| Jul 18, 12:36 PM EDT | Special Marine Warning | OKX | 39 min | |
| Jul 18, 12:39 PM EDT | Areal Flood Advisory | OKX | Westchester | 81 min |
| Jul 18, 1:12 PM EDT | Special Marine Warning | OKX | 63 min | |
| Jul 18, 1:12 PM EDT | Severe Thunderstorm Warning | OKX | Orange | 63 min |
| Jul 18, 1:15 PM EDT | Areal Flood Advisory | OKX | Orange | 90 min |
| Jul 18, 1:19 PM EDT | Areal Flood Advisory | OKX | Bronx, Nassau, Queens | 69 min |
| Jul 18, 1:19 PM EDT | Special Weather Statement | OKX | Bronx | 56 min |
| Jul 18, 2:00 PM EDT | Areal Flood Advisory | OKX | Putnam, Rockland, Westchester | 2 hr |
| Jul 18, 2:26 PM EDT | Severe Thunderstorm Warning | OKX | Orange, Rockland | 64 min |
| Jul 18, 2:36 PM EDT | Areal Flood Advisory | OKX | Orange | 84 min |
| Jul 18, 2:50 PM EDT | Special Marine Warning | OKX | 40 min | |
| Jul 18, 2:59 PM EDT | Special Marine Warning | OKX | 61 min | |
| Jul 18, 3:23 PM EDT | Severe Thunderstorm Warning | OKX | Nassau, Suffolk | 52 min |
| Jul 18, 3:35 PM EDT | Special Marine Warning | OKX | 25 min | |
| Jul 18, 3:54 PM EDT | Special Weather Statement | OKX | Bronx, New York | 66 min |
| Jul 18, 3:59 PM EDT | Special Marine Warning | OKX | 46 min | |
| Jul 18, 4:10 PM EDT | Areal Flood Advisory | OKX | Bronx, Kings, Nassau, New York, Queens, Richmond and 1 more | 2 hr |
| Jul 18, 4:15 PM EDT | Severe Thunderstorm Warning | OKX | Nassau, Queens, Suffolk | 60 min |
| Jul 18, 4:34 PM EDT | Flash Flood Warning | OKX | Bronx, Kings, Nassau, New York, Queens | 116 min |
| Jul 18, 4:41 PM EDT | Severe Thunderstorm Warning | OKX | Bronx, Kings, New York, Queens | 49 min |
| Jul 18, 5:08 PM EDT | Special Marine Warning | OKX | 52 min | |
| Jul 18, 7:00 PM EDT | Special Marine Warning | OKX | 45 min | |
| Jul 18, 7:09 PM EDT | Special Marine Warning | OKX | 66 min | |
| Jul 18, 7:58 PM EDT | Special Marine Warning | OKX | 47 min |
Nearby
Severe Thunderstorm Warnings in Connecticut, 2012Severe Thunderstorm Warnings in New York, 2012Every severe thunderstorm warning in 2012
Sources
The product and its follow-ups from the Iowa Environmental Mesonet's archive of National Weather Service and Storm Prediction Center text; local storm reports from the same archive; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.