Alert archive / Pennsylvania / Severe Thunderstorm Warnings in 2020

Severe Thunderstorm Warning 4, NWS Binghamton, NY

April 13, 2020Bradford County, Susquehanna County, Wyoming County, Pennsylvania

NWS Binghamton, NY issued this severe thunderstorm warning at Apr 13, 2020, 3:10 PM EDT for Bradford County, Susquehanna County, Wyoming County, Pennsylvania. It was in force for 43 min. No storm report in the archive falls inside the area while it was in force.

The area

The counties it named.

The facts

Issued
Apr 13, 2020, 3:10 PM EDT (19:10 UTC)
Expired
Apr 13, 2020, 3:53 PM EDT
In force
43 min
Issued by
NWS Binghamton, NY
Area
Storm-based polygon
Hail
0.75 in
Wind
60.0 mph

Counties Bradford County, PA, Susquehanna County, PA, Wyoming County, PA

The radar

The Binghamton radar (KBGM), 56 km from the middle of the area, began a volume at 19:11 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

Albany, NY (KALY), launched 12:00Z, 7.2 hours before the alert went out and 217 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-pSkew-T log-p diagram, Albany, NY at 12:00Z on 2020-04-13Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 0 joules per kilogram.LCL10008507005003002001001 km2 km3 km6 km9 km12 km15 km-30°-20°-10°0°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Albany, NY at 12:00Z on 2020-04-13The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 622 square meters per square second.1939587897Sfc1 km3 km6 km9 kmRMLM
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
0 J/kg
Mixed-layer CIN
No buoyant parcel
Mixed-layer LCL
681 m above ground
0-6 km bulk shear
45 kt
0-1 km storm-relative helicity
622 m²/s²
0-3 km storm-relative helicity
1112 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.0

Open this sounding in Storm Lab

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 13, 2:33 PM EDT, 37 minutes earlier.

Area forecast discussion, Apr 13, 2:33 PM EDT, 37 minutes before
Area Forecast Discussion
National Weather Service Binghamton NY
233 PM EDT Mon Apr 13 2020

.SYNOPSIS...
Much cooler air on gusty winds will move in this evening and
stay in our area through the week. An upper low moving through
the Great Lakes may bring a few showers to the area Thursday and
Friday.

&&

.NEAR TERM /THROUGH TUESDAY/...
Cold front will push through late this afternoon and evening
bringing another burst of heavy rain and winds, with an isolated
thunderstorm possible. Overnight will feature gusty west winds
and cold advection, perhaps a shower in the northern zones with
the added instability. Will continue with the flags but expect a
rather quick weakening of the gradient and corresponding
surface winds.

Tuesday will be mainly dry with a surface high nosing in and a
more southwest flow aloft. Wave zipping through in the southwest
flow looks now to be far enough south to keep the light
precipitation south of the area.

&&

.SHORT TERM /TUESDAY NIGHT THROUGH THURSDAY NIGHT/...
130 pm update...

A weak wave will cross the area Wednesday night. The low level
flow out of the W - NW should enhance moisture into the region
from the lakes. Could see a few isolated to scattered heavy
snow showers Wednesday night when this wave comes through. NAM
forecast soundings indicating steep low level lapse rates
(+7C/km) and strong omega, through a fairly deep saturated DGZ
layer from about 800 mb to just above 700 mb. Have kept PoP and
QPF/Snowfall conservative for now, as there remains uncertainty
on the total coverage of the showers. Can't rule out a quick
half inch to an inch of snow in heavy snow showers, as soundings
do indicate that snowfall rates should be intense enough to
overcome warm surface temperatures.

NW flow and cool conditions will continue on Thursday, as well
as a chance for lake effect rain/snow showers. There will likely
at the very least be mostly cloudy conditions through the day
with highs only in the low 40s and possibly upper 40s in parts
of NE PA.

&&

.LONG TERM /FRIDAY THROUGH SUNDAY/...
140 pm update...The previous forecast remains unchanged at this
time, with 12Z GFS still not indicating any storm on Saturday,
but just a quick wave that moves off the coast and out to sea on
Friday. At this time the 00Z Euro remains the outlier with the
large Coastal low on Saturday...will see what the 12Z Euro
brings when we get the data in the next couple hours.

430 am update...
The broad upper level trough at this time has moved over the
northeast US on Friday. Models not agreeing on the details of
the weak fast moving systems. The models have some form of a
storm that moves east through the Ohio Valley and PA Friday
afternoon and evening. Again a mix of rain and snow. ECMWF is
now the outlier with a storm on Saturday. For now continued
close to NBM and a dry forecast with highs slightly warmer with
highs in the mid and upper 40s.

Sunday showing a change in the weather with warmer and wetter
weather ahead of a cold front Sunday night. Most of the
precipitation would be rain with temperatures in the 50s.

&&

.AVIATION /19Z MONDAY THROUGH SATURDAY/...
Gusty winds at all terminals with thunder possible, mainly along
the NY/PA border in to NEPA at AVP. Variable conditions with the
showers and storms with VFR prevailing, but potential IFR in
the vicinity of storms. Front moves through most stations before
23Z and will be followed by improvement to VFR conditions all
stations overnight and into Tuesday.

Outlook...

Tuesday... through Thursday...Generally VFR.

Friday...Restrictions possible in NEPA for rain and snow
showers.

Saturday...VFR.

&&

.BGM WATCHES/WARNINGS/ADVISORIES...
PA...Wind Advisory until 10 PM EDT this evening for PAZ038>040-043-
     044-047-048-072.
NY...Wind Advisory until 10 PM EDT this evening for NYZ023>025-
     044>046-055>057-062.
     High Wind Warning until 10 PM EDT this evening for NYZ009-
     015>018-022-036-037.

&&

SYNOPSIS...DGM
NEAR TERM...DGM
SHORT TERM...MPK
LONG TERM...TAC
AVIATION...DGM
Hazardous weather outlook, Apr 13, 2:22 PM EDT, 48 minutes before
Hazardous Weather Outlook
National Weather Service Binghamton NY
222 PM EDT Mon Apr 13 2020

NYZ009-015>018-022-036-037-141830-
Northern Oneida-Yates-Seneca-Southern Cayuga-Onondaga-Steuben-
Madison-Southern Oneida-
222 PM EDT Mon Apr 13 2020

...HIGH WIND WARNING IN EFFECT UNTIL 10 PM EDT THIS EVENING...

This Hazardous Weather Outlook is for central New York.

.DAY ONE...This afternoon and tonight.

Please listen to NOAA Weather Radio or go to weather.gov on the
Internet for more information about the following hazards.

   High Wind Warning.

In addition, there is a chance for strong to severe thunderstorms
this afternoon. Any thunderstorm that forms could produce damaging
winds, and small hail.

.DAYS TWO THROUGH SEVEN...Tuesday through Sunday.

Hazardous weather is not expected at this time.

.SPOTTER INFORMATION STATEMENT...

Spotter activation may be needed. Please relay any information about
severe weather to the NWS while following local, state and CDC
guidelines.

NYZ023>025-044>046-055>057-062-PAZ038>040-043-044-048-072-141830-
Schuyler-Chemung-Tompkins-Cortland-Chenango-Otsego-Tioga-Broome-
Delaware-Sullivan-Bradford-Susquehanna-Northern Wayne-Wyoming-
Lackawanna-Pike-Southern Wayne-
222 PM EDT Mon Apr 13 2020

...WIND ADVISORY IN EFFECT UNTIL 10 PM EDT THIS EVENING...

This Hazardous Weather Outlook is for central New York and
northeast Pennsylvania.

.DAY ONE...This afternoon and tonight.

Please listen to NOAA Weather Radio or go to weather.gov on the
Internet for more information about the following hazards.

   Wind Advisory.

.DAYS TWO THROUGH SEVEN...Tuesday through Sunday.

No hazardous weather is expected at this time.

.SPOTTER INFORMATION STATEMENT...

Spotter activation is not expected at this time.

PAZ047-141830-
Luzerne-
222 PM EDT Mon Apr 13 2020

...WIND ADVISORY IN EFFECT UNTIL 10 PM EDT THIS EVENING...
...TORNADO WATCH 119 IN EFFECT UNTIL 6 PM EDT THIS EVENING...

This Hazardous Weather Outlook is for northeast Pennsylvania.

.DAY ONE...This afternoon and tonight.

Please listen to NOAA Weather Radio or go to weather.gov on the
Internet for more information about the following hazards.

   Tornado Watch.
   Wind Advisory.

.DAYS TWO THROUGH SEVEN...Tuesday through Sunday.

Hazardous weather is not expected at this time.

.SPOTTER INFORMATION STATEMENT...

Weather spotters are encouraged to report significant weather
conditions according to Standard Operating Procedures. Please relay
any information about severe weather to the NWS while following
local, state and CDC guidelines.

In the hours before

Local storm report, Apr 13, 10:43 AM EDT, 4 hours 27 minutes before
PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE BINGHAMTON NY
1043 AM EDT MON APR 13 2020

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

0915 AM     NON-TSTM WND DMG WILKES-BARRE            41.25N  75.88W
04/13/2020                   LUZERNE            PA   EMERGENCY MNGR

            ROOF DAMAGE TO CITY HALL IN WILKES BARRE

&&

MPK
Local storm report, Apr 13, 10:45 AM EDT, 4 hours 25 minutes before
PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE BINGHAMTON NY
1045 AM EDT MON APR 13 2020

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

1043 AM     NON-TSTM WND DMG WILKES-BARRE            41.25N  75.88W
04/13/2020                   LUZERNE            PA   EMERGENCY MNGR

            PEDESTIAN BRIDGE THAT CONNECTS WILKES BARRE GENERAL
            HOSPITAL WITH OUTPATIENT SURGERY CENTER SUSTAINED WIND
            DAMAGE

&&

MPK
Special weather statement, Apr 13, 1:56 PM EDT, 1 hour 14 minutes before
Special Weather Statement
National Weather Service Binghamton NY
156 PM EDT Mon Apr 13 2020

NYZ062-PAZ048-131845-
Sullivan NY-Pike PA-
156 PM EDT Mon Apr 13 2020

...A LINE OF STRONG THUNDERSTORMS WILL AFFECT...SOUTHERN SULLIVAN AND
PIKE COUNTIES UNTIL 245 PM EDT...

At 155 PM EDT, Doppler radar was tracking strong thunderstorms along
a line extending from near Greeley to near Bushkill. Movement was
northeast at 55 mph.

Although no lightning has been detected, brief heavy downpours and
wind gusts up to 50 mph will be possible with these storms.

Locations impacted include...
Fallsburg, Port Jervis, Bushkill, Monticello, Lackawaxen, South
Fallsburg, Shohola, Matamoras, Wurtsboro and Otisville.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Heavy rainfall is also occurring with these storms, and may lead to
minor flooding. Do not drive your vehicle through flooded roadways.

&&

LAT...LON 4150 7449 4149 7476 4143 7476 4143 7473
      4140 7474 4136 7469 4132 7479 4116 7490
      4108 7503 4114 7508 4115 7515 4139 7513
      4159 7495 4188 7446 4175 7457 4165 7440
      4159 7436
TIME...MOT...LOC 1755Z 231DEG 49KT 4139 7507 4115 7508

JRK
Special weather statement, Apr 13, 2:13 PM EDT, 57 minutes before
Special Weather Statement
National Weather Service Binghamton NY
213 PM EDT Mon Apr 13 2020

NYZ023>025-044-055-PAZ038-131900-
Chemung NY-Cortland NY-Schuyler NY-Tioga NY-Tompkins NY-Bradford PA-
213 PM EDT Mon Apr 13 2020

...A LINE OF STRONG THUNDERSTORMS WILL AFFECT...SOUTHEASTERN
SCHUYLER...CHEMUNG...SOUTHWESTERN CORTLAND...TIOGA...TOMPKINS AND
BRADFORD COUNTIES UNTIL 300 PM EDT...

At 213 PM EDT, Doppler radar was tracking strong thunderstorms along
a line extending from near Cayuta to near Millerton to near Morris.
Movement was northeast at 45 mph.

Wind gusts up to 50 mph and brief heavy downpours will be possible
with these storms.

Locations impacted include...
Chemung, Ithaca, Elmira, Cortland, Southport, Barton, Horseheads,
Sayre, Newfield and Waverly.

These storms may intensify, so be certain to monitor local radio
stations and available television stations for additional information
and possible warnings from the National Weather Service.

LAT...LON 4248 7668 4268 7609 4241 7610 4241 7613
      4231 7610 4219 7610 4218 7612 4200 7611
      4200 7615 4191 7614 4168 7630 4156 7648
      4160 7687 4200 7692 4200 7696 4203 7697
TIME...MOT...LOC 1813Z 238DEG 43KT 4226 7674 4196 7697 4168 7723

JRK
Local storm report, Apr 13, 3:04 PM EDT, 6 minutes before
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        Please try again in a few minutes.
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The office that day

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

IssuedProductOfficeCountiesLasted
Apr 13, 2:13 PM EDTSpecial Weather StatementBGMChemung, Tioga, Tompkins47 min
Apr 13, 2:41 PM EDTSevere Thunderstorm WarningBGMChemung, Tioga49 min
Apr 13, 3:05 PM EDTSevere Thunderstorm WarningBGMBroome, Chenango, Cortland, Tioga55 min
Apr 13, 3:51 PM EDTSpecial Weather StatementBGMDelaware54 min
Apr 13, 3:59 PM EDTSpecial Weather StatementBGMOtsego61 min
Apr 13, 4:56 PM EDTSpecial Weather StatementBGMSullivan34 min
Apr 13, 9:24 AM EDTWind AdvisoryBGMLackawanna, Luzerne, Wayne, Wyoming13 hr
Apr 13, 1:56 PM EDTSpecial Weather StatementBGMPike49 min
Apr 13, 3:50 PM EDTAreal Flood AdvisoryBGMLackawanna, Wayne115 min

Nearby

Severe Thunderstorm Warnings in Pennsylvania, 2020Every severe thunderstorm warning in 2020

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.