Alert archive / New York / Severe Thunderstorm Warnings in 2011

Severe Thunderstorm Warning 52, NWS Binghamton, NY

April 28, 2011Delaware County, Otsego County, New York

NWS Binghamton, NY issued this severe thunderstorm warning at Apr 28, 2011, 9:53 AM EDT for Delaware County, Otsego County, New York. It was in force for 37 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: Apr 28, 2011, 9:53 AM EDT (13:53 UTC)
Expired: Apr 28, 2011, 10:30 AM EDT
In force: 37 min
Issued by: NWS Binghamton, NY
Area: Storm-based polygon

Counties Delaware County, NY, Otsego County, NY

The radar

The Albany radar (KENX), 58 km from the middle of the area, began a volume at 13:54 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.

Did it verify

Not verified. The Iowa Environmental Mesonet's Cow found no qualifying storm report inside this severe thunderstorm warning while it was in force. That is not proof nothing happened: reports are thin where few people live.

Cow counts a report within 15 km of the polygon while the warning was in force: a tornado for a tornado warning; hail of 1 inch or more, a gust of 58 mph or more or wind damage for a severe thunderstorm warning; a flash flood report for a flash flood warning.

The watch it was issued in

The SPC watch in force over the same counties when this warning went out.

Issued	Product	Office	Lasted
Apr 28, 4:05 AM EDT	Severe Thunderstorm Watch	SPC	6 hr

The nearest sounding before it

Albany, NY (KALY), launched 12:00Z, 1.9 hours before the alert went out and 80 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: 354 J/kg
Mixed-layer CIN: -37 J/kg
Mixed-layer LCL: 613 m above ground
0-6 km bulk shear: 63 kt
0-1 km storm-relative helicity: 258 m²/s²
0-3 km storm-relative helicity: 254 m²/s²
Significant tornado parameter: 0.7
Supercell composite: 5.7

Open this sounding in Storm Lab

The text

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

760 
WUUS51 KBGM 281353
SVRBGM
NYC025-077-281430-
/O.NEW.KBGM.SV.W.0052.110428T1353Z-110428T1430Z/

BULLETIN - EAS ACTIVATION REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE BINGHAMTON NY
953 AM EDT THU APR 28 2011

THE NATIONAL WEATHER SERVICE IN BINGHAMTON HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...
  EASTERN DELAWARE COUNTY IN CENTRAL NEW YORK...
  EAST CENTRAL OTSEGO COUNTY IN CENTRAL NEW YORK...

* UNTIL 1030 AM EDT.

* AT 949 AM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
  LINE OF SEVERE THUNDERSTORMS.  THESE STORMS WERE LOCATED ALONG A
  LINE EXTENDING FROM COLLIERSVILLE TO DOWNSVILLE...AND MOVING
  NORTHEAST AT 45 MPH.

* SEVERE THUNDERSTORMS WILL BE NEAR...
  MILFORD AND MARYLAND BY 958 AM EDT...
  DAVENPORT BY 1002 AM EDT...
  ELK CREEK AND SCHENEVUS BY 1004 AM EDT...
  ANDES BY 1006 AM EDT...
  BOVINA CENTER BY 1008 AM EDT...
  WORCESTER BY 1010 AM EDT...

THIS STORM HAS A HISTORY OF PRODUCING DAMAGING WINDS. SEVERAL 
REPORTS OF TREE DAMAGE HAVE BEEN RECEIVED FROM DELAWARE COUNTY. 

WHEN YOU CAN DO SO SAFELY...PLEASE REPORT HAIL...OR DAMAGING WINDS TO
THE NATIONAL WEATHER SERVICE BY CALLING TOLL FREE AT
1-877-633-6772...OR BY EMAIL AT BGM.STORMREPORT@NOAA.GOV.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

IF YOU ARE IN THE PATH OF THIS STORM...SEEK SHELTER INDOORS AND STAY
AWAY FROM WINDOWS!

&&

LAT...LON 4197 7505 4253 7505 4276 7467 4263 7463
      4259 7465 4252 7471 4243 7462 4236 7444
      4235 7442
TIME...MOT...LOC 1352Z 231DEG 38KT 4250 7495 4212 7496

$$

RHB

2 follow-up statements

884 
WWUS51 KBGM 281415
SVSBGM

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE BINGHAMTON NY
1015 AM EDT THU APR 28 2011

NYC025-077-281430-
/O.CON.KBGM.SV.W.0052.000000T0000Z-110428T1430Z/
DELAWARE NY-OTSEGO NY-
1015 AM EDT THU APR 28 2011

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 1030 AM EDT
FOR EAST CENTRAL OTSEGO AND NORTHEASTERN DELAWARE COUNTIES...

AT 1012 AM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR CONTINUED TO
INDICATE A LINE OF SEVERE THUNDERSTORMS.  THESE STORMS WERE LOCATED
ALONG A LINE EXTENDING FROM WESTFORD TO NEW KINGSTON...MOVING
NORTHEAST AT 50 MPH.

SEVERE THUNDERSTORMS WILL BE NEAR...
  STAMFORD BY 1020 AM EDT...
  ROXBURY BY 1025 AM EDT...

PLEASE REPORT HAIL...OR DAMAGING WINDS TO THE NATIONAL WEATHER
SERVICE BY CALLING TOLL FREE AT 1-877-633-6772...OR BY EMAIL AT
BGM.STORMREPORT@NOAA.GOV.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

IF YOU ARE IN THE PATH OF THIS STORM...SEEK SHELTER INDOORS AND STAY
AWAY FROM WINDOWS!

&&

LAT...LON 4215 7477 4261 7488 4276 7467 4263 7463
      4259 7465 4252 7471 4243 7462 4236 7444
      4235 7442
TIME...MOT...LOC 1415Z 223DEG 44KT 4266 7469 4224 7468

$$

312 
WWUS51 KBGM 281425
SVSBGM

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE BINGHAMTON NY
1025 AM EDT THU APR 28 2011

NYC025-077-281435-
/O.EXP.KBGM.SV.W.0052.000000T0000Z-110428T1430Z/
DELAWARE NY-OTSEGO NY-
1025 AM EDT THU APR 28 2011

...THE SEVERE THUNDERSTORM WARNING FOR EAST CENTRAL OTSEGO AND
NORTHEASTERN DELAWARE COUNTIES WILL EXPIRE AT 1030 AM EDT...

PLEASE REPORT HAIL...OR DAMAGING WINDS TO THE NATIONAL WEATHER
SERVICE BY CALLING TOLL FREE AT 1-877-633-6772...OR BY EMAIL AT
BGM.STORMREPORT@NOAA.GOV.

LAT...LON 4215 7477 4261 7488 4276 7467 4263 7463
      4259 7465 4252 7471 4243 7462 4236 7444
      4235 7442
TIME...MOT...LOC 1425Z 223DEG 44KT 4275 7457 4233 7457

$$

What forecasters said that day

The local office's own words before this severe thunderstorm warning went out, as it sent them, from the Iowa Environmental Mesonet's archive of National Weather Service text.

NWS Binghamton, NY wrote its last area forecast discussion before this severe thunderstorm warning went out at Apr 28, 6:39 AM EDT, 3 hours 14 minutes earlier.

Area forecast discussion, Apr 28, 6:39 AM EDT, 3 hours 14 minutes before

AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE BINGHAMTON NY
639 AM EDT THU APR 28 2011

.SYNOPSIS...
LOW PRESSURE MOVING THROUGH THE GREAT LAKES WILL PUSH A COLD FRONT
THROUGH THE AREA THIS MORNING BRINGING SHOWERS AND THUNDERSTORMS.
A NORTHWEST FLOW OF COOL AIR...ALONG WITH AN UPPER LEVEL LOW
PRESSURE AREA WILL KEEP SHOWERS IN THE AREA THROUGH FRIDAY.

&&

.NEAR TERM /THROUGH TONIGHT/...
VERY BUSY SHIFT WITH MULTIPLE TORNADO AND FLOOD WARNINGS. VERY
GOOD LL SHEAR IS OVERCOMING MRGNL INSTABILITY TO PRODUCE MINI
SUPERCELLS AND SVRL DAMAGE RPTS. SEE LTL CHG IN THE SCENARIO UNTIL
THE FNTL PASSAGE ARND OR AFT 12Z. OTR BIG CONCERN IS FLOODING WITH
SATURATED GND AND RVRS AND STREAMS ALREADY RUNNING HIGH FROM PRVS
RAINS. XPCT CONTD FLOODING PRBLMS AHD OF THE FNT WITH PS APRCHG
1.75.

&&

.SHORT TERM /FRIDAY THROUGH FRIDAY NIGHT/...
UPR LOW OVER THE ERN GREAT LAKES WILL DRFT EWRD ON FRI AND FRI
NGT. INSTABILITY WITH THE COLD POOL ALOFT WILL BRING ADTNL TO THE
AREA...WITH SOME ISLTD TRW PSBL. SHRP RDGG AND MUCH DRIER AIR WILL
BRING A BRIEF BRK IN THE RAINY PTRN FOR SAT WITH TEMPS RISING TO
NEAR NRML WITH SUN.

&&

.LONG TERM /SATURDAY THROUGH WEDNESDAY/...
UL RIDGE AXIS AT THE START OF THE PD WL GRADUALLY SLIDE EAST ON
SUNDAY. EC IS A LITTLE SLOWER TO BREAK DOWN THE RIDGE BUT EXPECT SFC
FRONTAL BNDRY TO MV THRU THE GREAT LKS WITH A WARM FRONT LIFTING
THRU SUN/SUN NGT. HV BASICALLY FOLLOWED HPC GUIDANCE WHICH FOLLOWS
CLOSELY WITH THE EURO.

THUS, CHC POPS FM 12Z SUNDAY ON FOR STALLED FRONTAL BNDRY NR THE
REGION. LATER IN THE PD, THE EURO DRIVES A WV UP INTO THE CWA BY THE
END OF THE PD. MEANWHILE THE 12Z GFS BRINGS THE FRONT THRU WITH DRY
WX MVG IN BHND MON/MON NGT. WL MAINTAIN CHC FOR SHOWERS SIMILAR  TO
HPC GUIDANCE THRU TUE NGT. HWVR LONG TERM FCST IS UP IN THE AIR
AFTER MONDAY.

&&

.AVIATION /12Z THURSDAY THROUGH MONDAY/...
SVR CONV MVG THRU THE AREA ATTM. SHRT WV LFTG THRU THE ERN LAKES
IS PUSHING A FNT EWRD TWRDS THE AREA THIS MRNG TRIGGERING SHWRS
AND ISLTD SVR TRWS. MVFR AND OCNL IFR CONDS WITH THE TRWS. FNT
WILL PASS EARLY IN THE PD AND BE FLWD BY DRIER AIR AND GNRL VFR
CONDS. VFR CONDS WILL LINGER THRU THE END OF THE TAF PD.

OUTLOOK...

FRI TO FRI NGT...MVFR MAINLY CENTRAL NY IN SCATTERED -SHRA.

SAT/SAT NGT...VFR.

SUN TO MON...MVFR IN SCT -SHRA.

&&

.HYDROLOGY...
HEAVY RAIN ON SATURATED SOILS HAS CAUSED MINOR FLOODING AT SVRL
POINTS ALONG THE SUSQUEHANNA RIVER SYSTEM...AND ALSO AT ONONDAGA
LAKE. ANTECEDENT HYDROLOGIC CONDITIONS HAVE NEARLY ZERO TOLERANCE
FOR ADDITIONAL RAINFALL IN THE NEXT 12-24 HRS.

FLASH FLOOD WATCH CONTINUES FOR THE ENTIRE CWA INTO THURSDAY
AFTERNOON. HEAVY LOCALIZED RAIN WITH THUNDERSTORMS HAS CAUSED
FLASH FLOODING THIS EVENING.

ADDITIONAL WIDESPREAD RAINFALL EXPECTED LATER TONIGHT SHOULD BRING
ANOTHER THREE QUARTERS TO ONE INCH TO MANY BASINS. THIS MAY BE
EXACERBATED BY LOCALLY TORRENTIAL RAINFALL IN CONVECTION. MORE
FLASH FLOODING IS LIKELY. CONTINUED MINOR RIVER FLOODING...TO
MODERATE AT SOME POINTS IS LIKELY WITH ADDITIONAL RISES EXPECTED
DUE TO THIS NEW RAINFALL FORECAST. HEADWATER POINTS ALONG THE
SUSQUEHANNA AND DELAWARE BASINS WILL NEED MONITORING AS MANY OF
THESE ARE NOT INDICATED TO BE IN FLOOD AT THIS TIME. THEY WILL
REACH FS IF CONVECTION HITS THE PARTICULAR BASINS.

&&

.BGM WATCHES/WARNINGS/ADVISORIES...
PA...FLASH FLOOD WATCH UNTIL 2 PM EDT THIS AFTERNOON FOR PAZ038>040-
     043-044-047-048-072.
NY...FLASH FLOOD WATCH UNTIL 2 PM EDT THIS AFTERNOON FOR NYZ009-
     015>018-022>025-036-037-044>046-055>057-062.

&&

SYNOPSIS...DGM
NEAR TERM...DGM
SHORT TERM...DGM
LONG TERM...PVN
AVIATION...DGM
HYDROLOGY...

Hazardous weather outlook, Apr 28, 4:31 AM EDT, 5 hours 22 minutes before

HAZARDOUS WEATHER OUTLOOK
NATIONAL WEATHER SERVICE BINGHAMTON NY
431 AM EDT THU APR 28 2011

NYZ015>018-022>025-290845-
YATES-SENECA-SOUTHERN CAYUGA-ONONDAGA-STEUBEN-SCHUYLER-CHEMUNG-
TOMPKINS-
431 AM EDT THU APR 28 2011

...FLASH FLOOD WATCH IN EFFECT UNTIL 2 PM EDT THIS AFTERNOON...

THIS HAZARDOUS WEATHER OUTLOOK IS FOR CENTRAL NEW YORK.

.DAY ONE...TODAY AND TONIGHT.

PLEASE LISTEN TO NOAA WEATHER RADIO OR GO TO WEATHER.GOV ON THE
INTERNET FOR MORE INFORMATION ABOUT THE FOLLOWING HAZARDS.

   FLASH FLOOD WATCH.

.DAYS TWO THROUGH SEVEN...FRIDAY THROUGH WEDNESDAY.

SEVERE WEATHER IS NOT EXPECTED.

.SPOTTER INFORMATION STATEMENT...

SPOTTER ACTIVATION WILL BE NEEDED FOR ALL WARNINGS.

NYZ009-036-037-044>046-055>057-062-PAZ038>040-043-044-047-048-072-
290845-
NORTHERN ONEIDA-MADISON-SOUTHERN ONEIDA-CORTLAND-CHENANGO-OTSEGO-
TIOGA-BROOME-DELAWARE-SULLIVAN-BRADFORD-SUSQUEHANNA-NORTHERN WAYNE-
WYOMING-LACKAWANNA-LUZERNE-PIKE-SOUTHERN WAYNE-
431 AM EDT THU APR 28 2011

...FLASH FLOOD WATCH IN EFFECT UNTIL 2 PM EDT THIS AFTERNOON...
...SEVERE THUNDERSTORM WATCH 249 IN EFFECT UNTIL 10 AM EDT THIS
MORNING...

THIS HAZARDOUS WEATHER OUTLOOK IS FOR CENTRAL NEW
YORK...SOUTHEASTERN NEW YORK AND NORTHEAST PENNSYLVANIA.

.DAY ONE...TODAY AND TONIGHT.

PLEASE LISTEN TO NOAA WEATHER RADIO OR GO TO WEATHER.GOV ON THE
INTERNET FOR MORE INFORMATION ABOUT THE FOLLOWING HAZARDS.

   FLASH FLOOD WATCH.
   SEVERE THUNDERSTORM WATCH.

.DAYS TWO THROUGH SEVEN...FRIDAY THROUGH WEDNESDAY.

SEVERE WEATHER IS NOT EXPECTED.

.SPOTTER INFORMATION STATEMENT...

SPOTTER ACTIVATION WILL BE NEEDED FOR ALL WARNINGS.

In the hours before

Special weather statement, Apr 28, 8:16 AM EDT, 1 hour 37 minutes before

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE BINGHAMTON NY
816 AM EDT THU APR 28 2011

PAZ044-047-281315-
LACKAWANNA PA-LUZERNE PA-
816 AM EDT THU APR 28 2011

...STRONG THUNDERSTORM WILL AFFECT NORTHERN LUZERNE AND SOUTHERN
LACKAWANNA COUNTIES...

* AT 812 AM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
  STRONG THUNDERSTORM CAPABLE OF PRODUCING STRONG GUSTY WINDS...AND
  VERY HEAVY RAIN.  THIS STORM WAS LOCATED NEAR MUHLENBERG...AND
  MOVING EAST AT 35 MPH.

* THE STRONG THUNDERSTORM WILL BE NEAR...
  NANTICOKE AND LEHMAN AT 825 AM EDT...
  LARKSVILLE AND PLYMOUTH AT 830 AM EDT...
  PRINGLE AND FORTY FORT AT 835 AM EDT...
  PLAINS AND PARSONS AT 840 AM EDT...
  LAFLIN AND YATESVILLE AT 845 AM EDT...
  DUPONT AND GLENDALE AT 850 AM EDT...
  MOOSIC AND OAKHILL AT 855 AM EDT...
  SPRINGBROOK CORNERS AND SCRANTON AT 900 AM EDT...

THIS STORM HAS THE POTENTIAL TO BECOME SEVERE AND PRODUCE LARGE HAIL
AND/OR DAMAGING WINDS.

LAT...LON 4130 7626 4147 7549 4132 7545 4126 7545
      4124 7549 4122 7552 4122 7555 4121 7556
      4113 7621

Local storm report, Apr 28, 8:32 AM EDT, 1 hour 21 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE BINGHAMTON NY
832 AM EDT THU APR 28 2011

..TIME...   ...EVENT...      ...CITY LOCATION...     ...LAT.LON...
..DATE...   ....MAG....      ..COUNTY LOCATION..ST.. ...SOURCE....
            ..REMARKS..

0831 AM     FLASH FLOOD      NORWICH                 42.53N  75.52W
04/28/2011                   CHENANGO           NY   BROADCAST MEDIA

            ROUTE 12 FLOODED BY THE CANASAWACTA CREEK.

&&

DJN

Local storm report, Apr 28, 8:48 AM EDT, 1 hour 5 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE BINGHAMTON NY
848 AM EDT THU APR 28 2011

..TIME...   ...EVENT...      ...CITY LOCATION...     ...LAT.LON...
..DATE...   ....MAG....      ..COUNTY LOCATION..ST.. ...SOURCE....
            ..REMARKS..

0848 AM     FLASH FLOOD      NICHOLS                 42.02N  76.37W
04/28/2011                   TIOGA              NY   TRAINED SPOTTER

            WEST RIVER ROAD FLOODED NEAR TIOGA DOWNS.

&&

DJN

Local storm report, Apr 28, 8:59 AM EDT, 54 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE BINGHAMTON NY
859 AM EDT THU APR 28 2011

..TIME...   ...EVENT...      ...CITY LOCATION...     ...LAT.LON...
..DATE...   ....MAG....      ..COUNTY LOCATION..ST.. ...SOURCE....
            ..REMARKS..

0839 AM     TSTM WND DMG     FALLS                   41.47N  75.88W
04/28/2011                   WYOMING            PA   EMERGENCY MNGR

            NUMEROUS TREES DOWN.

&&

DJN

Local storm report, Apr 28, 9:06 AM EDT, 47 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE BINGHAMTON NY
906 AM EDT THU APR 28 2011

..TIME...   ...EVENT...      ...CITY LOCATION...     ...LAT.LON...
..DATE...   ....MAG....      ..COUNTY LOCATION..ST.. ...SOURCE....
            ..REMARKS..

0857 AM     TSTM WND DMG     DALTON                  41.54N  75.74W
04/28/2011                   LACKAWANNA         PA   LAW ENFORCEMENT

            TREE DOWN

&&

XXX

Local storm report, Apr 28, 9:53 AM EDT, 0 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE BINGHAMTON NY
953 AM EDT THU APR 28 2011

..TIME...   ...EVENT...      ...CITY LOCATION...     ...LAT.LON...
..DATE...   ....MAG....      ..COUNTY LOCATION..ST.. ...SOURCE....
            ..REMARKS..

0953 AM     TSTM WND DMG     COLCHESTER              42.17N  75.08W
04/28/2011                   DELAWARE           NY   LAW ENFORCEMENT

            NUMEROUS TREES DOWN THROUGHOUT THE COUNTY

&&

CMG

The office that day

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

Issued	Product	Office	Counties	Lasted
Apr 27, 8:10 PM EDT	Severe Thunderstorm Warning	BGM	Cayuga, Seneca, Yates	65 min
Apr 27, 8:44 PM EDT	Severe Thunderstorm Warning	BGM	Cayuga, Chemung, Chenango, Cortland, Madison, Onondaga and 4 more	61 min
Apr 27, 9:02 PM EDT	Severe Thunderstorm Warning	BGM	Tioga	43 min
Apr 27, 9:04 PM EDT	Areal Flood Advisory	BGM	Chemung	3 hr
Apr 27, 9:11 PM EDT	Flash Flood Warning	BGM	Cayuga, Seneca, Yates	3 hr
Apr 27, 9:30 PM EDT	Areal Flood Advisory	BGM	Broome, Tioga	3 hr
Apr 27, 9:40 PM EDT	Severe Thunderstorm Warning	BGM	Broome, Chenango, Cortland, Tioga	41 min
Apr 27, 10:18 PM EDT	Severe Thunderstorm Warning	BGM	Chenango, Delaware, Madison, Oneida, Otsego	57 min
Apr 27, 10:26 PM EDT	Flash Flood Warning	BGM	Madison, Oneida	2 hr
Apr 27, 10:35 PM EDT	Severe Thunderstorm Warning	BGM	Delaware, Otsego	55 min
Apr 27, 10:36 PM EDT	Severe Thunderstorm Warning	BGM	Delaware	54 min
Apr 27, 11:54 PM EDT	Flash Flood Warning	BGM	Steuben	6 hr
Apr 28, 12:36 AM EDT	Special Weather Statement	BGM	Schuyler	54 min
Apr 28, 1:05 AM EDT	Areal Flood Advisory	BGM	Chemung, Schuyler, Steuben, Tompkins	6 hr
Apr 28, 1:11 AM EDT	Special Weather Statement	BGM	Chemung	49 min
Apr 28, 1:22 AM EDT	Severe Thunderstorm Warning	BGM	Cayuga, Chemung, Cortland, Tioga, Tompkins	53 min
Apr 28, 1:28 AM EDT	Tornado Warning	BGM	Chemung, Schuyler, Tioga, Tompkins	32 min
Apr 28, 1:53 AM EDT	Tornado Warning	BGM	Cayuga, Cortland, Tompkins	52 min
Apr 28, 2:11 AM EDT	Special Weather Statement	BGM	Chenango, Tioga	64 min
Apr 28, 2:27 AM EDT	Tornado Warning	BGM	Cortland, Madison, Onondaga	33 min
Apr 28, 2:34 AM EDT	Severe Thunderstorm Warning	BGM	Chenango, Cortland, Madison	41 min
Apr 28, 2:43 AM EDT	Tornado Warning	BGM	Chenango, Cortland, Madison	47 min
Apr 28, 2:48 AM EDT	Severe Thunderstorm Warning	BGM	Broome, Chenango, Cortland, Tioga	27 min
Apr 28, 3:00 AM EDT	Flash Flood Warning	BGM	Chemung, Tioga	10 hr
Apr 28, 3:08 AM EDT	Tornado Warning	BGM	Chenango, Madison, Oneida	37 min
Apr 28, 3:12 AM EDT	Tornado Warning	BGM	Chenango, Cortland	63 min
Apr 28, 3:29 AM EDT	Flash Flood Warning	BGM	Cortland, Tioga, Tompkins	10 hr
Apr 28, 3:40 AM EDT	Flash Flood Warning	BGM	Broome, Chenango, Madison, Oneida	10 hr
Apr 28, 3:41 AM EDT	Severe Thunderstorm Warning	BGM	Oneida	34 min
Apr 28, 3:45 AM EDT	Severe Thunderstorm Warning	BGM	Broome, Chenango, Cortland	45 min
Apr 28, 3:47 AM EDT	Tornado Warning	BGM	Madison, Oneida	28 min
Apr 28, 3:49 AM EDT	Tornado Warning	BGM	Chenango, Madison, Oneida	26 min
Apr 28, 3:51 AM EDT	Severe Thunderstorm Warning	BGM	Broome, Chenango, Tioga	54 min
Apr 28, 4:11 AM EDT	Tornado Warning	BGM	Oneida	19 min
Apr 28, 4:12 AM EDT	River Flood Warning	BGM	Chenango, Delaware	53 hr
Apr 28, 4:12 AM EDT	River Flood Warning	BGM	Chemung	25 hr
Apr 28, 4:12 AM EDT	River Flood Warning	BGM	Chemung	25 hr
Apr 28, 4:12 AM EDT	River Flood Warning	BGM	Chenango	29 hr
Apr 28, 4:12 AM EDT	River Flood Warning	BGM	Broome	29 hr
Apr 28, 4:12 AM EDT	River Flood Warning	BGM	Cortland	25 hr
Apr 28, 4:12 AM EDT	Tornado Warning	BGM	Chenango, Madison	33 min
Apr 28, 4:33 AM EDT	Tornado Warning	BGM	Chenango, Madison, Oneida, Otsego	57 min
Apr 28, 4:47 AM EDT	Severe Thunderstorm Warning	BGM	Broome, Chenango, Delaware, Otsego	43 min
Apr 28, 4:54 AM EDT	Flash Flood Warning	BGM	Delaware, Otsego	9 hr
Apr 28, 5:16 AM EDT	Severe Thunderstorm Warning	BGM	Otsego	44 min
Apr 28, 5:23 AM EDT	Flash Flood Warning	BGM	Sullivan	9 hr
Apr 28, 5:39 AM EDT	Severe Thunderstorm Warning	BGM	Chenango, Delaware, Otsego, Sullivan	66 min
Apr 28, 5:46 AM EDT	Tornado Warning	BGM	Delaware	44 min
Apr 28, 6:46 AM EDT	Severe Thunderstorm Warning	BGM	Delaware	29 min
Apr 28, 6:48 AM EDT	Severe Thunderstorm Warning	BGM	Sullivan	42 min
Apr 28, 7:25 AM EDT	Severe Thunderstorm Warning	BGM	Sullivan	35 min
Apr 28, 7:33 AM EDT	Tornado Warning	BGM	Sullivan	15 min
Apr 28, 7:56 AM EDT	Severe Thunderstorm Warning	BGM	Sullivan	28 min
Apr 28, 9:12 AM EDT	Wind Advisory	BGM	Cayuga, Cortland, Madison, Oneida, Onondaga, Schuyler and 4 more	7 hr
Apr 28, 9:23 AM EDT	Severe Thunderstorm Warning	BGM	Delaware, Sullivan	37 min
Apr 28, 9:37 AM EDT	River Flood Warning	BGM	Delaware, Otsego	30 hr
Apr 28, 9:37 AM EDT	River Flood Warning	BGM	Chenango	45 hr
Apr 28, 9:58 AM EDT	Severe Thunderstorm Warning	BGM	Sullivan	47 min
Apr 28, 10:11 AM EDT	River Flood Warning	BGM	Delaware	19 hr
Apr 28, 1:28 PM EDT	Flash Flood Warning	BGM	Broome, Chenango	4 hr
Apr 28, 3:22 PM EDT	Areal Flood Warning	BGM	Otsego	8 hr

Nearby

Severe Thunderstorm Warnings in New York, 2011 Every 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; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.