Alert archive / New York / Severe Thunderstorm Warnings in 2009
Severe Thunderstorm Warning 84, NWS Buffalo, NY
NWS Buffalo, NY issued this severe thunderstorm warning at Aug 18, 2009, 5:49 PM EDT for Lewis County, New York. It was in force for 26 min. No storm report in the archive falls inside the area while it was in force.
The area
The outline as issued.
The facts
- Issued
- Aug 18, 2009, 5:49 PM EDT (21:49 UTC)
- Expired
- Aug 18, 2009, 6:15 PM EDT
- In force
- 26 min
- Issued by
- NWS Buffalo, NY
- Area
- Storm-based polygon
County Lewis County, NY
The radar
The Ft Drum radar (KTYX), 38 km from the middle of the area, began a volume at 21:51 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
Albany, NY (KALY), launched 12:00Z, 9.8 hours before the alert went out and 179 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
- 213 J/kg
- Mixed-layer CIN
- -116 J/kg
- Mixed-layer LCL
- 1316 m above ground
- 0-6 km bulk shear
- 7 kt
- 0-1 km storm-relative helicity
- 81 m²/s²
- 0-3 km storm-relative helicity
- 72 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted, in the capitals the NWS used until 2016.
000 WUUS51 KBUF 182149 SVRBUF NYC049-182215- /O.NEW.KBUF.SV.W.0084.090818T2149Z-090818T2215Z/ BULLETIN - EAS ACTIVATION REQUESTED SEVERE THUNDERSTORM WARNING NATIONAL WEATHER SERVICE BUFFALO NY 549 PM EDT TUE AUG 18 2009 THE NATIONAL WEATHER SERVICE IN BUFFALO HAS ISSUED A * SEVERE THUNDERSTORM WARNING FOR... EAST CENTRAL LEWIS COUNTY IN CENTRAL NEW YORK * UNTIL 615 PM EDT * AT 548 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 7 MILES SOUTH OF INDIAN RIVER... OR 2 MILES SOUTHEAST OF CROGHAN...AND MOVING NORTHEAST AT 30 MPH. * THE SEVERE THUNDERSTORM WILL BE NEAR... RURAL LEWIS COUNTY EAST OF CROGHAN PRECAUTIONARY/PREPAREDNESS ACTIONS... WIND DAMAGE WITH THIS STORM WILL OCCUR WELL AHEAD OF ANY RAIN OR LIGHTNING. DO NOT WAIT FOR THE SOUND OF THUNDER BEFORE TAKING COVER. SEEK SHELTER IMMEDIATELY INSIDE A STURDY STRUCTURE AND STAY AWAY FROM WINDOWS. && LAT...LON 4386 7513 4381 7542 4393 7546 4411 7517 TIME...MOT...LOC 2148Z 239DEG 24KT 4389 7536 $$ HITCHCOCK
2 follow-up statements
000 WWUS51 KBUF 182159 SVSBUF SEVERE WEATHER STATEMENT NATIONAL WEATHER SERVICE BUFFALO NY 559 PM EDT TUE AUG 18 2009 NYC049-182215- /O.CON.KBUF.SV.W.0084.000000T0000Z-090818T2215Z/ LEWIS NY- 559 PM EDT TUE AUG 18 2009 ...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 615 PM EDT FOR EAST CENTRAL LEWIS COUNTY... AT 557 PM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR CONTINUED TO INDICATE A SEVERE THUNDERSTORM CAPABLE OF PRODUCING DAMAGING WINDS IN EXCESS OF 60 MPH. THIS STORM WAS LOCATED 8 MILES EAST OF CROGHAN... MOVING NORTHEAST AT 30 MPH. THE SEVERE THUNDERSTORM WILL BE NEAR... SOFT MAPLE RESERVOIR AND LONG POND BY 605 PM EDT... PRECAUTIONARY/PREPAREDNESS ACTIONS... WIND DAMAGE WITH THIS STORM WILL OCCUR WELL AHEAD OF ANY RAIN OR LIGHTNING. DO NOT WAIT FOR THE SOUND OF THUNDER BEFORE TAKING COVER. SEEK SHELTER IMMEDIATELY INSIDE A STURDY STRUCTURE AND STAY AWAY FROM WINDOWS. CAMPERS ALONG THE BEAVER RIVER SHOULD TAKE SHELTER IMMEDIATELY IN A BUILDING OR LEAN-TO IF POSSIBLE. MOVE AWAY FROM DEAD AND WEAK TREES. && LAT...LON 4384 7530 4399 7535 4411 7517 4386 7513 TIME...MOT...LOC 2157Z 239DEG 24KT 4393 7524 $$ HITCHCOCK
000 WWUS51 KBUF 182216 SVSBUF SEVERE WEATHER STATEMENT NATIONAL WEATHER SERVICE BUFFALO NY 616 PM EDT TUE AUG 18 2009 NYC049-182225- /O.EXP.KBUF.SV.W.0084.000000T0000Z-090818T2215Z/ LEWIS NY- 616 PM EDT TUE AUG 18 2009 ...THE SEVERE THUNDERSTORM WARNING FOR EAST CENTRAL LEWIS COUNTY HAS EXPIRED... AT 615 PM EDT NATIONAL WEATHER SERVICE RADAR SHOWED THAT THE SEVERE THUNDERSTORM THAT PROMPTED THE WARNING HAD EXITED THE WARNED AREA... THUS THE WARNING HAS BEEN ALLOWED TO EXPIRE. PLEASE REPORT SEVERE WEATHER DAMAGE TO LOCAL LAW ENFORCEMENT FOR RELAY TO THE NATIONAL WEATHER SERVICE IN BUFFALO. LAT...LON 4384 7530 4399 7535 4411 7517 4386 7513 TIME...MOT...LOC 2159Z 239DEG 24KT 4393 7523 $$ HITCHCOCK
The office that day
Everything else NWS Buffalo, NY issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Aug 18, 12:49 PM EDT | Areal Flood Advisory | BUF | Chautauqua | 3 hr |
| Aug 18, 2:19 PM EDT | Severe Thunderstorm Warning | BUF | Cattaraugus | 56 min |
| Aug 18, 3:18 PM EDT | Severe Thunderstorm Warning | BUF | Monroe, Wayne | 57 min |
| Aug 18, 3:54 PM EDT | Special Marine Warning | BUF | 83 min | |
| Aug 18, 4:54 PM EDT | Special Marine Warning | BUF | 35 min |
Nearby
Severe Thunderstorm Warnings in New York, 2009Every severe thunderstorm warning in 2009
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.