Alert archive / New York / Severe Thunderstorm Warnings in 2011
Severe Thunderstorm Warning 77, NWS Buffalo, NY
NWS Buffalo, NY issued this severe thunderstorm warning at Aug 18, 2011, 3:46 PM EDT for Niagara County, Orleans County, New York. It was in force for 44 min. 1 report 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
- Aug 18, 2011, 3:46 PM EDT (19:46 UTC)
- Expired
- Aug 18, 2011, 4:30 PM EDT
- In force
- 44 min
- Issued by
- NWS Buffalo, NY
- Area
- Storm-based polygon
Counties Niagara County, NY, Orleans County, NY
The radar
The Buffalo radar (KBUF), 40 km from the middle of the area, began a volume at 19:49 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 |
|---|---|---|---|
| Aug 18, 3:55 PM EDT | TSTM WND DMG | 1 Ne Gasport, NY | TREE DOWN ACROSS ROAD |
Local storm reports filed while the alert was in force, from inside its polygon or its counties.
The nearest sounding before it
Buffalo Intl Airport, NY (KBUF), launched 12:00Z, 7.8 hours before the alert went out and 41 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
- 20 J/kg
- Mixed-layer CIN
- -63 J/kg
- Mixed-layer LCL
- 1362 m above ground
- 0-6 km bulk shear
- 28 kt
- 0-1 km storm-relative helicity
- 92 m²/s²
- 0-3 km storm-relative helicity
- 106 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted, in the capitals the NWS used until 2016.
794 WUUS51 KBUF 181946 SVRBUF NYC063-073-182030- /O.NEW.KBUF.SV.W.0077.110818T1946Z-110818T2030Z/ BULLETIN - EAS ACTIVATION REQUESTED SEVERE THUNDERSTORM WARNING NATIONAL WEATHER SERVICE BUFFALO NY 346 PM EDT THU AUG 18 2011 THE NATIONAL WEATHER SERVICE IN BUFFALO HAS ISSUED A * SEVERE THUNDERSTORM WARNING FOR... EASTERN NIAGARA COUNTY IN WESTERN NEW YORK WESTERN ORLEANS COUNTY IN WESTERN NEW YORK * UNTIL 430 PM EDT * AT 344 PM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A SEVERE THUNDERSTORM CAPABLE OF PRODUCING QUARTER SIZE HAIL...AND DAMAGING WINDS IN EXCESS OF 60 MPH. THIS STORM WAS LOCATED NEAR NEWFANE...OR 6 MILES NORTH OF LOCKPORT...AND MOVING EAST AT 15 MPH. * SOME LOCATIONS IN THE WARNING INCLUDE... HARTLAND... WRIGHTS CORNERS... MIDDLEPORT... PRECAUTIONARY/PREPAREDNESS ACTIONS... 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. && LAT...LON 4335 7834 4316 7834 4320 7880 4330 7877 TIME...MOT...LOC 1946Z 271DEG 13KT 4325 7870 $$ HITCHCOCK
2 follow-up statements
804 WWUS51 KBUF 182009 SVSBUF SEVERE WEATHER STATEMENT NATIONAL WEATHER SERVICE BUFFALO NY 409 PM EDT THU AUG 18 2011 NYC063-073-182030- /O.CON.KBUF.SV.W.0077.000000T0000Z-110818T2030Z/ NIAGARA NY-ORLEANS NY- 409 PM EDT THU AUG 18 2011 ...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 430 PM EDT FOR WESTERN ORLEANS AND EASTERN NIAGARA COUNTIES... AT 407 PM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR CONTINUED TO INDICATE A SEVERE THUNDERSTORM CAPABLE OF PRODUCING QUARTER SIZE HAIL...AND DAMAGING WINDS IN EXCESS OF 60 MPH. THIS STORM WAS LOCATED NEAR GASPORT...OR 8 MILES NORTHEAST OF LOCKPORT...MOVING EAST AT 15 MPH. SOME LOCATIONS IN THE WARNING INCLUDE... MIDDLEPORT... HARTLAND... RIDGEWAY... PRECAUTIONARY/PREPAREDNESS ACTIONS... IN ADDITION TO LARGE HAIL AND DAMAGING WINDS...CONTINUOUS CLOUD TO GROUND LIGHTNING IS OCCURRING WITH THIS STORM. MOVE INDOORS IMMEDIATELY! LIGHTNING IS ONE OF NATURES NUMBER ONE KILLERS. REMEMBER...IF YOU CAN HEAR THUNDER...YOU ARE CLOSE ENOUGH TO BE STRUCK BY LIGHTNING. && LAT...LON 4335 7834 4316 7834 4320 7880 4330 7877 TIME...MOT...LOC 2008Z 271DEG 13KT 4326 7859 $$ HITCHCOCK
906 WWUS51 KBUF 182034 SVSBUF SEVERE WEATHER STATEMENT NATIONAL WEATHER SERVICE BUFFALO NY 434 PM EDT THU AUG 18 2011 NYC063-073-182044- /O.EXP.KBUF.SV.W.0077.000000T0000Z-110818T2030Z/ NIAGARA NY-ORLEANS NY- 434 PM EDT THU AUG 18 2011 ...THE SEVERE THUNDERSTORM WARNING FOR WESTERN ORLEANS AND CENTRAL NIAGARA COUNTIES HAS EXPIRED... AT 434 PM EDT NATIONAL WEATHER SERVICE RADAR SHOWED THAT THE SEVERE THUNDERSTORM THAT PROMPTED THE WARNING HAD WEAKENED AND WAS NO LONGER SEVERE...THUS THE WARNING HAS BEEN ALLOWED TO EXPIRE. ADDITIONAL THUNDERSTORMS MAY CONTINUE TO PRODUCE SMALL HAIL AND GUSTY WINDS ALONG WITH HEAVY RAINFALL...BUT THESE STORMS ARE NOT SEVERE AT THIS TIME. LAT...LON 4335 7834 4316 7834 4320 7880 4330 7877 TIME...MOT...LOC 2009Z 271DEG 13KT 4326 7858 $$ HITCHCOCK
The office that day
Everything else NWS Buffalo, NY issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Aug 18, 1:20 PM EDT | Special Weather Statement | BUF | Orleans | 55 min |
| Aug 18, 1:35 PM EDT | Areal Flood Advisory | BUF | Monroe, Niagara, Orleans | 3 hr |
| Aug 18, 2:45 PM EDT | Special Weather Statement | BUF | Orleans | 60 min |
| Aug 18, 3:29 PM EDT | Special Weather Statement | BUF | Wayne | 61 min |
| Aug 18, 3:43 PM EDT | Special Weather Statement | BUF | Niagara | 62 min |
| Aug 18, 4:12 PM EDT | Special Weather Statement | BUF | Oswego | 63 min |
| Aug 18, 6:08 PM EDT | Special Marine Warning | BUF | 59 min |
Nearby
Severe Thunderstorm Warnings in New York, 2011Every severe thunderstorm warning in 2011
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.