Alert archive / New York / Severe Thunderstorm Warnings in 2009
Severe Thunderstorm Warning 83, NWS Buffalo, NY
NWS Buffalo, NY issued this severe thunderstorm warning at Aug 18, 2009, 3:18 PM EDT for Monroe County, Wayne County, New York. It was in force for 57 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, 2009, 3:18 PM EDT (19:18 UTC)
- Expired
- Aug 18, 2009, 4:15 PM EDT
- In force
- 57 min
- Issued by
- NWS Buffalo, NY
- Area
- Storm-based polygon
Counties Monroe County, NY, Wayne County, NY
The radar
The Buffalo radar (KBUF), 99 km from the middle of the area, began a volume at 19:21 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, 3:50 PM EDT | TSTM WND DMG | Ontario, NY | POWER LINES DOWN |
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, 7.3 hours before the alert went out and 97 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
- 870 J/kg
- Mixed-layer CIN
- -18 J/kg
- Mixed-layer LCL
- 661 m above ground
- 0-6 km bulk shear
- 17 kt
- 0-1 km storm-relative helicity
- 118 m²/s²
- 0-3 km storm-relative helicity
- 151 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 181918
SVRBUF
NYC055-117-182015-
/O.NEW.KBUF.SV.W.0083.090818T1918Z-090818T2015Z/
BULLETIN - EAS ACTIVATION REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE BUFFALO NY
318 PM EDT TUE AUG 18 2009
THE NATIONAL WEATHER SERVICE IN BUFFALO HAS ISSUED A
* SEVERE THUNDERSTORM WARNING FOR...
MONROE COUNTY IN WESTERN NEW YORK
NORTHWESTERN WAYNE COUNTY IN WESTERN NEW YORK
* UNTIL 415 PM EDT
* AT 317 PM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
SEVERE THUNDERSTORM CAPABLE OF PRODUCING PENNY SIZE HAIL...AND
DAMAGING WINDS IN EXCESS OF 60 MPH. THIS STORM WAS LOCATED NEAR
HENRIETTA...OR 7 MILES SOUTHWEST OF BRIGHTON...AND MOVING NORTHEAST
AT 35 MPH.
* THE SEVERE THUNDERSTORM WILL BE NEAR...
HENRIETTA BY 325 PM EDT...
BRIGHTON BY 330 PM EDT...
EAST ROCHESTER BY 335 PM EDT...
PENFIELD BY 340 PM EDT...
WEBSTER BY 350 PM EDT...
ONTARIO BY 400 PM EDT...
WILLIAMSON BY 405 PM EDT...
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 4299 7772 4299 7778 4307 7785 4328 7764
4325 7758 4325 7754 4328 7740 4330 7715
4328 7686 4303 7744 4304 7747 4302 7748
4294 7766 4294 7774
TIME...MOT...LOC 1918Z 236DEG 28KT 4305 7766
$$
HITCHCOCK2 follow-up statements
000
WWUS51 KBUF 181945
SVSBUF
SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE BUFFALO NY
345 PM EDT TUE AUG 18 2009
NYC055-117-182015-
/O.CON.KBUF.SV.W.0083.000000T0000Z-090818T2015Z/
WAYNE NY-MONROE NY-
345 PM EDT TUE AUG 18 2009
...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 415 PM EDT
FOR EAST CENTRAL MONROE AND NORTHWESTERN WAYNE COUNTIES...
AT 345 PM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR CONTINUED TO
INDICATE A SEVERE THUNDERSTORM CAPABLE OF PRODUCING PENNY SIZE
HAIL...AND DAMAGING WINDS IN EXCESS OF 60 MPH. THIS STORM WAS
LOCATED NEAR PENFIELD...OR NEAR WEBSTER...MOVING NORTHEAST AT 30 MPH.
THE SEVERE THUNDERSTORM WILL BE NEAR...
WALWORTH BY 355 PM EDT...
ONTARIO BY 400 PM EDT...
PULTNEYVILLE BY 410 PM EDT...
LAT...LON 4325 7754 4328 7740 4328 7726 4329 7725
4330 7715 4328 7704 4329 7698 4328 7697
4329 7695 4328 7686 4303 7743 4304 7747
TIME...MOT...LOC 1946Z 236DEG 28KT 4316 7740
$$
ZAFF000
WWUS51 KBUF 182013
SVSBUF
SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE BUFFALO NY
413 PM EDT TUE AUG 18 2009
NYC055-117-182023-
/O.EXP.KBUF.SV.W.0083.000000T0000Z-090818T2015Z/
WAYNE NY-MONROE NY-
413 PM EDT TUE AUG 18 2009
...THE SEVERE THUNDERSTORM WARNING FOR EAST CENTRAL MONROE AND
NORTHWESTERN WAYNE COUNTIES WILL EXPIRE AT 415 PM EDT...
AT 413 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 4325 7754 4328 7740 4328 7726 4329 7725
4330 7715 4328 7704 4329 7698 4328 7697
4329 7695 4328 7686 4303 7743 4304 7747
TIME...MOT...LOC 2013Z 236DEG 28KT 4327 7716
$$
HITCHCOCKThe 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, 3:54 PM EDT | Special Marine Warning | BUF | 83 min | |
| Aug 18, 4:54 PM EDT | Special Marine Warning | BUF | 35 min | |
| Aug 18, 5:49 PM EDT | Severe Thunderstorm Warning | BUF | Lewis | 26 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; local storm reports from the same archive; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.