Alert archive / New York / Special Marine Warnings in 2011

Special Marine Warning 21, NWS Buffalo, NY

May 29, 2011

NWS Buffalo, NY issued this special marine warning at May 29, 2011, 9:42 PM EDT. It was in force for 33 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: May 29, 2011, 9:42 PM EDT (01:42 UTC)
Expired: May 29, 2011, 10:15 PM EDT
In force: 33 min
Issued by: NWS Buffalo, NY
Area: Storm-based polygon

The radar

The Buffalo radar (KBUF), 24 km from the middle of the area, began a volume at 01:46 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

Buffalo Intl Airport, NY (KBUF), launched 00:00Z, 1.7 hours before the alert went out and 28 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: 1339 J/kg
Mixed-layer CIN: -79 J/kg
Mixed-layer LCL: 834 m above ground
0-6 km bulk shear: 34 kt
0-1 km storm-relative helicity: 118 m²/s²
0-3 km storm-relative helicity: 136 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 3.4

Open this sounding in Storm Lab

The text

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

929 
WHUS51 KBUF 300142
SMWBUF
LEZ020-LOZ030-300215-
/O.NEW.KBUF.MA.W.0021.110530T0142Z-110530T0215Z/

BULLETIN - IMMEDIATE BROADCAST REQUESTED
SPECIAL MARINE WARNING
NATIONAL WEATHER SERVICE BUFFALO NY
942 PM EDT SUN MAY 29 2011

THE NATIONAL WEATHER SERVICE HAS ISSUED A

* SPECIAL MARINE WARNING FOR...
  THE NIAGARA RIVER

* UNTIL 1015 PM EDT

* AT 936 PM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
  LINE OF THUNDERSTORMS...PRODUCING STRONG WINDS OVER 35 KNOTS... 
  FROM 3 NM EAST OF PORT WELLER TO 7 NM EAST OF PORT COLBORNE...
  MOVING EAST AT 40 KNOTS.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

ALL MARINE INTERESTS SHOULD REMAIN ALERT AND SMALL BOATS TAKE SHELTER
IMMEDIATELY.

BOATERS SHOULD GO TO A SAFE HARBOR IMMEDIATELY. IF POSSIBLE REMAIN
BELOW DECK TO AVOID THE THREAT OF LIGHTNING. STRONG GUSTY WINDS AND
HIGH WAVES MAY QUICKLY CAPSIZE YOUR CRAFT. BOATS IN PORT SHOULD NOT
VENTURE OUT UNTIL THE STORM HAS PASSED.

A SEVERE THUNDERSTORM WATCH REMAINS IN EFFECT UNTIL 100 AM EDT MONDAY
MORNING FOR WESTERN NEW YORK.

&&

LAT...LON 4324 7905 4324 7904 4314 7903 4308 7906
      4307 7891 4302 7888 4298 7894 4295 7890
      4291 7891 4295 7892 4299 7903 4306 7900
      4308 7908
TIME...MOT...LOC 0142Z 251DEG 40KT 4326 7905 4291 7898

$$

TMA

1 follow-up statement

814 
FZUS71 KBUF 300207
MWSBUF

MARINE WEATHER STATEMENT
NATIONAL WEATHER SERVICE BUFFALO NY
1007 PM EDT SUN MAY 29 2011

LEZ020-LOZ030-300217-
/O.EXP.KBUF.MA.W.0021.000000T0000Z-110530T0215Z/
1007 PM EDT SUN MAY 29 2011

...SPECIAL MARINE WARNING WILL EXPIRE AT 1015 PM EDT...

THE THUNDERSTORMS THAT PROMPTED THE WARNING HAVE MOVED AWAY FROM THE
AREA.

LAT...LON 4324 7905 4324 7904 4314 7903 4308 7906
      4307 7891 4302 7888 4298 7894 4295 7890
      4291 7891 4295 7892 4299 7903 4306 7900
      4308 7908
TIME...MOT...LOC 0207Z 251DEG 40KT 4335 7869 4300 7862

$$

APFFEL

The office that day

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

Issued	Product	Office	Counties	Lasted
May 29, 8:03 PM EDT	Special Marine Warning	BUF		87 min
May 29, 8:34 PM EDT	Severe Thunderstorm Warning	BUF	Chautauqua	56 min
May 29, 8:58 PM EDT	Special Marine Warning	BUF		62 min
May 29, 9:17 PM EDT	Severe Thunderstorm Warning	BUF	Cattaraugus, Chautauqua	58 min
May 29, 9:24 PM EDT	Special Weather Statement	BUF	Erie, Niagara	51 min
May 29, 9:57 PM EDT	Special Marine Warning	BUF		63 min
May 29, 10:04 PM EDT	Severe Thunderstorm Warning	BUF	Allegany, Cattaraugus	56 min
May 29, 10:18 PM EDT	Special Weather Statement	BUF	Genesee, Livingston, Monroe, Orleans, Wyoming	57 min
May 29, 10:21 PM EDT	Severe Thunderstorm Warning	BUF	Allegany, Genesee, Livingston, Wyoming	34 min
May 29, 10:27 PM EDT	Severe Thunderstorm Warning	BUF	Genesee, Livingston, Monroe, Ontario, Orleans	63 min
May 29, 10:30 PM EDT	Severe Thunderstorm Warning	BUF	Allegany	26 min
May 29, 10:41 PM EDT	Severe Thunderstorm Warning	BUF	Genesee, Livingston, Ontario, Wyoming	50 min
May 29, 10:57 PM EDT	Special Marine Warning	BUF		63 min
May 29, 11:13 PM EDT	Severe Thunderstorm Warning	BUF	Monroe, Ontario, Wayne	62 min
May 29, 11:39 PM EDT	Severe Thunderstorm Warning	BUF	Cayuga, Oswego, Wayne	66 min
May 29, 11:44 PM EDT	Special Marine Warning	BUF		46 min
May 30, 12:31 AM EDT	Special Weather Statement	BUF	Lewis	74 min

Nearby

Special Marine Warnings in New York, 2011 Every special marine 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; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.