Alert archive / New York / Severe Thunderstorm Warnings in 2011

Severe Thunderstorm Warning 50, NWS Binghamton, NY

April 28, 2011Wayne County, Pennsylvania; Delaware County, Sullivan County, New York

NWS Binghamton, NY issued this severe thunderstorm warning at Apr 28, 2011, 9:23 AM EDT for Wayne County, Pennsylvania; Delaware County, Sullivan County, New York. It was in force for 37 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: Apr 28, 2011, 9:23 AM EDT (13:23 UTC)
Expired: Apr 28, 2011, 10:00 AM EDT
In force: 37 min
Issued by: NWS Binghamton, NY
Area: Storm-based polygon

Counties Delaware County, NY, Sullivan County, NY, Wayne County, PA

The radar

The Binghamton radar (KBGM), 79 km from the middle of the area, began a volume at 13:25 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
Apr 28, 9:53 AM EDT	TSTM WND DMG	Colchester, NY	NUMEROUS TREES DOWN THROUGHOUT THE COUNTY

Local storm reports filed while the alert was in force, from inside its polygon or its counties.

Did it verify

Verified. The Iowa Environmental Mesonet's Cow matched one storm report to this severe thunderstorm warning; the first came 30 minutes after it went out.

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, 1.4 hours before the alert went out and 126 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.

657 
WUUS51 KBGM 281323
SVRBGM
NYC025-105-PAC127-281400-
/O.NEW.KBGM.SV.W.0050.110428T1323Z-110428T1400Z/

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

THE NATIONAL WEATHER SERVICE IN BINGHAMTON HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...
  DELAWARE COUNTY IN CENTRAL NEW YORK...
  NORTHWESTERN SULLIVAN COUNTY IN CENTRAL NEW YORK...
  NORTHERN WAYNE COUNTY IN NORTHEAST PENNSYLVANIA...

* UNTIL 1000 AM EDT.

* AT 916 AM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
  SEVERE THUNDERSTORM CAPABLE OF PRODUCING DAMAGING WINDS IN EXCESS
  OF 60 MPH.  THIS STORM WAS LOCATED 6 MILES SOUTH OF SHEHAWKEN...AND
  MOVING NORTHEAST AT 50 MPH.

* THE SEVERE THUNDERSTORM WILL BE NEAR...
  EQUINUNK BY 928 AM EDT...
  HANCOCK BY 932 AM EDT...
  PEABROOK BY 936 AM EDT...
  FISHS EDDY BY 938 AM EDT...
  HARVARD BY 944 AM EDT...
  CORBETT BY 950 AM EDT...

THIS IS A DANGEROUS STORM WHICH HAS DOWNED NUMEROUS TREES ACROSS 
LACKAWANNA COUNTY AND WAYNE 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 4206 7468 4202 7478 4201 7476 4201 7475
      4163 7526 4182 7548 4199 7548 4200 7547
      4200 7538 4205 7543 4242 7506 4213 7458
TIME...MOT...LOC 1322Z 228DEG 43KT 4184 7535

$$

1 follow-up statement

218 
WWUS51 KBGM 281339
SVSBGM

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

PAC127-281349-
/O.CAN.KBGM.SV.W.0050.000000T0000Z-110428T1400Z/
WAYNE PA-
939 AM EDT THU APR 28 2011

...THE SEVERE THUNDERSTORM WARNING FOR NORTHERN WAYNE COUNTY IS
CANCELLED...

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.

A SEVERE THUNDERSTORM WATCH REMAINS IN EFFECT UNTIL 1000 AM EDT
THURSDAY MORNING FOR CENTRAL NEW YORK AND NORTHEAST PENNSYLVANIA.

LAT...LON 4213 7458 4206 7468 4202 7478 4201 7475
      4177 7507 4177 7511 4181 7508 4185 7513
      4185 7516 4187 7518 4187 7526 4195 7528
      4195 7531 4200 7535 4200 7538 4205 7543
      4242 7506
TIME...MOT...LOC 1339Z 228DEG 43KT 4197 7515

$$

NYC025-105-281400-
/O.CON.KBGM.SV.W.0050.000000T0000Z-110428T1400Z/
DELAWARE NY-SULLIVAN NY-
939 AM EDT THU APR 28 2011

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 1000 AM EDT
FOR NORTHWESTERN SULLIVAN AND DELAWARE COUNTIES...

AT 935 AM 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 NEAR FISHS EDDY...MOVING
NORTHEAST AT 50 MPH.

THE SEVERE THUNDERSTORM WILL BE NEAR...
  HARVARD BY 945 AM EDT...
  CORBETT AND DOWNSVILLE BY 950 AM EDT...
  COLCHESTER BY 955 AM EDT...
  SHINHOPPLE...COOKS FALLS AND ROCK RIFT BY 945 AM EDT...
  ROCKLAND BY 950 AM EDT...
  WOLF HOLLOW AND HAMDEN BY 1000 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!

A SEVERE THUNDERSTORM WATCH REMAINS IN EFFECT UNTIL 1000 AM EDT
THURSDAY MORNING FOR CENTRAL NEW YORK AND NORTHEAST PENNSYLVANIA.

&&

LAT...LON 4213 7458 4206 7468 4202 7478 4201 7475
      4177 7507 4177 7511 4181 7508 4185 7513
      4185 7516 4187 7518 4187 7526 4195 7528
      4195 7531 4200 7535 4200 7538 4205 7543
      4242 7506
TIME...MOT...LOC 1339Z 228DEG 43KT 4197 7515

$$

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, 2 hours 44 minutes earlier.

Area forecast discussion, Apr 28, 6:39 AM EDT, 2 hours 44 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, 4 hours 52 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

Local storm report, Apr 28, 7:59 AM EDT, 1 hour 24 minutes before

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

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

0731 AM     FLASH FLOOD      UTICA                   43.10N  75.23W
04/28/2011                   ONEIDA             NY   BROADCAST MEDIA

            ROADS FLOODED.

&&

DJN

Special weather statement, Apr 28, 8:16 AM EDT, 1 hour 7 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, 51 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, 35 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, 24 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, 17 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

The office that day

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

Issued	Product	Office	Counties	Lasted
Apr 27, 8:22 PM EDT	Severe Thunderstorm Warning	BGM	Bradford	53 min
Apr 27, 8:33 PM EDT	Flash Flood Warning	BGM	Bradford	2 hr
Apr 27, 9:02 PM EDT	Severe Thunderstorm Warning	BGM	Bradford, Susquehanna, Wyoming	43 min
Apr 27, 9:09 PM EDT	Severe Thunderstorm Warning	BGM	Luzerne, Susquehanna, Wyoming	51 min
Apr 27, 9:40 PM EDT	Severe Thunderstorm Warning	BGM	Susquehanna	41 min
Apr 27, 10:36 PM EDT	Severe Thunderstorm Warning	BGM	Wayne	54 min
Apr 28, 1:22 AM EDT	Severe Thunderstorm Warning	BGM	Bradford	53 min
Apr 28, 2:11 AM EDT	Special Weather Statement	BGM	Bradford	64 min
Apr 28, 2:13 AM EDT	Severe Thunderstorm Warning	BGM	Bradford	47 min
Apr 28, 3:00 AM EDT	Flash Flood Warning	BGM	Bradford	10 hr
Apr 28, 3:29 AM EDT	Flash Flood Warning	BGM	Bradford	10 hr
Apr 28, 3:51 AM EDT	Severe Thunderstorm Warning	BGM	Bradford, Susquehanna, Wyoming	54 min
Apr 28, 4:12 AM EDT	River Flood Warning	BGM	Bradford	25 hr
Apr 28, 4:21 AM EDT	Severe Thunderstorm Warning	BGM	Luzerne, Susquehanna, Wyoming	54 min
Apr 28, 4:23 AM EDT	Flash Flood Warning	BGM	Lackawanna, Luzerne, Susquehanna, Wyoming	9 hr
Apr 28, 4:47 AM EDT	Severe Thunderstorm Warning	BGM	Lackawanna, Luzerne, Susquehanna, Wayne, Wyoming	43 min
Apr 28, 5:23 AM EDT	Flash Flood Warning	BGM	Pike, Wayne	9 hr
Apr 28, 5:39 AM EDT	Severe Thunderstorm Warning	BGM	Lackawanna, Pike, Susquehanna, Wayne	66 min
Apr 28, 5:46 AM EDT	Tornado Warning	BGM	Susquehanna, Wayne	44 min
Apr 28, 6:05 AM EDT	River Flood Warning	BGM	Bradford	8 hr
Apr 28, 6:48 AM EDT	Severe Thunderstorm Warning	BGM	Pike, Wayne	42 min
Apr 28, 8:16 AM EDT	Special Weather Statement	BGM	Lackawanna, Luzerne	59 min
Apr 28, 8:22 AM EDT	Severe Thunderstorm Warning	BGM	Lackawanna, Luzerne, Wyoming	38 min
Apr 28, 8:55 AM EDT	Severe Thunderstorm Warning	BGM	Lackawanna, Susquehanna, Wayne	50 min
Apr 28, 9:27 AM EDT	Severe Thunderstorm Warning	BGM	Lackawanna, Luzerne, Pike, Wayne	48 min
Apr 28, 9:58 AM EDT	Severe Thunderstorm Warning	BGM	Pike, Wayne	47 min
Apr 28, 10:12 AM EDT	Severe Thunderstorm Warning	BGM	Pike	48 min
Apr 28, 2:16 PM EDT	River Flood Warning	BGM	Wyoming	15 hr
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, 9:04 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, 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, 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, 1:28 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, 2:27 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, 3:08 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, 3:40 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, 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	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, 4:54 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, 6:46 AM EDT	Severe Thunderstorm Warning	BGM	Delaware	29 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, 9:37 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, 9:53 AM EDT	Severe Thunderstorm Warning	BGM	Delaware, Otsego	37 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 Severe Thunderstorm Warnings in Pennsylvania, 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; local storm reports from the same archive; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.