Alert archive / Pennsylvania / Severe Thunderstorm Warnings in 2018

Severe Thunderstorm Warning 38, NWS State College, PA

May 15, 20184 counties in Pennsylvania

NWS State College, PA issued this severe thunderstorm warning at May 15, 2018, 2:11 PM EDT for 4 counties in Pennsylvania. It was in force for 49 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: May 15, 2018, 2:11 PM EDT (18:11 UTC)
Expired: May 15, 2018, 3:00 PM EDT
In force: 49 min
Issued by: NWS State College, PA
Area: Storm-based polygon
Hail: 0.75 in
Wind: 60.0 mph

Counties Blair County, PA, Cambria County, PA, Centre County, PA, Huntingdon County, PA

The radar

The State College radar (KCCX), 41 km from the middle of the area, began a volume at 18:14 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
May 15, 2:20 PM EDT	HAIL 1.25	1 S Lilly, PA	HAIL LARGER THAN QUARTERS.

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 9 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
May 15, 12:26 PM EDT	Severe Thunderstorm Watch	SPC	7 hr

The nearest sounding before it

Pittsburgh, PA (KAGC), launched 12:00Z, 6.2 hours before the alert went out and 184 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: 856 J/kg
Mixed-layer CIN: -79 J/kg
Mixed-layer LCL: 1232 m above ground
0-6 km bulk shear: 46 kt
0-1 km storm-relative helicity: 112 m²/s²
0-3 km storm-relative helicity: 185 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 2.4

Open this sounding in Storm Lab

The text

As transmitted.

661 
WUUS51 KCTP 151811
SVRCTP
PAC013-021-027-061-151915-
/O.NEW.KCTP.SV.W.0038.180515T1811Z-180515T1915Z/

BULLETIN - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Warning
National Weather Service State College PA
211 PM EDT TUE MAY 15 2018

The National Weather Service in State College PA has issued a

* Severe Thunderstorm Warning for...
  Northern Huntingdon County in central Pennsylvania...
  South central Centre County in central Pennsylvania...
  Blair County in central Pennsylvania...
  South central Cambria County in central Pennsylvania...

* Until 315 PM EDT

* At 211 PM EDT, severe thunderstorms were located along a line
  extending from near Warriors Mark to Altoona to near Lilly, moving
  east at 35 mph.

  HAZARD...60 mph wind gusts.

  SOURCE...Radar indicated.

  IMPACT...Expect damage to trees and power lines.

* Locations impacted include...
  Hollidaysburg, Altoona, Portage, Tyrone, Huntingdon, Whipple Dam
  State Park, Pine Grove Mills, Raystown Dam, Bellwood and Spruce
  Creek.

This includes Interstate 99 from mile markers 20 to 57.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

For your protection move to an interior room on the lowest floor of a
building.

&&

LAT...LON 4033 7875 4076 7818 4075 7765 4073 7768
      4072 7768 4070 7770 4068 7770 4068 7768
      4058 7783 4055 7784 4050 7782 4041 7791
      4040 7791 4030 7799
TIME...MOT...LOC 1811Z 279DEG 32KT 4070 7806 4051 7836 4038 7857 

HAIL...<.75IN
WIND...60MPH
 
$$

Dangelo

2 follow-up statements

517 
WWUS51 KCTP 151853
SVSCTP

Severe Weather Statement
National Weather Service State College PA
253 PM EDT TUE MAY 15 2018

PAC013-021-027-151903-
/O.CAN.KCTP.SV.W.0038.000000T0000Z-180515T1915Z/
Centre PA-Blair PA-Cambria PA-
253 PM EDT TUE MAY 15 2018

...THE SEVERE THUNDERSTORM WARNING FOR SOUTH CENTRAL CENTRE...BLAIR
AND SOUTH CENTRAL CAMBRIA COUNTIES IS CANCELLED...

The storms which prompted the warning have moved out of the warned 
area. Therefore, the warning has been cancelled.

A severe thunderstorm watch remains in effect until 800 PM EDT for
central Pennsylvania.

LAT...LON 4031 7825 4037 7821 4058 7783 4055 7784
      4050 7782 4041 7791 4040 7791 4030 7799
TIME...MOT...LOC 1853Z 292DEG 28KT 4047 7784 4039 7797 4032 7817 

$$

PAC061-151915-
/O.CON.KCTP.SV.W.0038.000000T0000Z-180515T1915Z/
Huntingdon PA-
253 PM EDT TUE MAY 15 2018

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 315 PM EDT
FOR CENTRAL HUNTINGDON COUNTY...

At 253 PM EDT, severe thunderstorms were located along a line
extending from near Allensville to near Raystown Dam to near
Entriken, moving southeast at 35 mph.

HAZARD...70 mph wind gusts.

SOURCE...Radar indicated.

IMPACT...Expect considerable tree damage. Damage is likely to mobile 
         homes, roofs, and outbuildings.

Locations impacted include...
Huntingdon, Trough Creek State Park, Raystown Dam, Entriken, Mill
Creek, Marklesburg and Mapleton.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

For your protection move to an interior room on the lowest floor of a
building.

&&

LAT...LON 4031 7825 4037 7821 4058 7783 4055 7784
      4050 7782 4041 7791 4040 7791 4030 7799
TIME...MOT...LOC 1853Z 292DEG 28KT 4047 7784 4039 7797 4032 7817 

HAIL...<.75IN
WIND...70MPH
 
$$

Dangelo

578 
WWUS51 KCTP 151900
SVSCTP

Severe Weather Statement
National Weather Service State College PA
300 PM EDT TUE MAY 15 2018

PAC061-151910-
/O.CAN.KCTP.SV.W.0038.000000T0000Z-180515T1915Z/
Huntingdon PA-
300 PM EDT TUE MAY 15 2018

...THE SEVERE THUNDERSTORM WARNING FOR CENTRAL HUNTINGDON COUNTY IS
CANCELLED...
    
The storms which prompted the warning have moved out of the area.
Therefore the warning has been cancelled.

A severe thunderstorm watch remains in effect until 800 PM EDT for
central Pennsylvania.

LAT...LON 4031 7825 4037 7821 4058 7783 4055 7784
      4050 7782 4041 7791 4040 7791 4030 7799
TIME...MOT...LOC 1859Z 279DEG 32KT 4046 7776 4038 7789 4031 7809 

$$

Dangelo

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 State College, PA wrote its last area forecast discussion before this severe thunderstorm warning went out at May 15, 12:31 PM EDT, 1 hour 40 minutes earlier.

Area forecast discussion, May 15, 12:31 PM EDT, 1 hour 40 minutes before

Area Forecast Discussion
National Weather Service State College PA
1231 PM EDT Tue May 15 2018

.SYNOPSIS...
Severe thunderstorms capable of significant damaging wind are
forecast Tuesday afternoon and evening across parts of central
Pennsylvania. A wet and muggy weather pattern will persist
through late week into the weekend with areas of locally heavy
rain and risk of flash flooding.

&&

.NEAR TERM /THROUGH TONIGHT/...
Severe Thunderstorm Watch 93 just issue for all of our CWA
except for warren county - through 8 pm edt.

After a few hour break in the isolated early convection over
northern PA, generally cloud free skies and strong diabatic
diabatic heating and advection of low to mid 60s dewpoints is
priming the airmass for one or two lines of fast-moving tsra
headed across our far NW counties ATTM.

Latest HRRR has this expanding/intensifying line of TSRA
screaming across much of central and northern PA by 21Z,
while lagging back along its southern edge over the Lower Susq
Valley.

A second mesoscale mid/upper level vort max will ride east along
the sagging/slowing frontal boundary near the mason dixon line
tonight, bringing the chc for training heavy showers/tsra cells
and heavy rain. Flash flood watch there through the first half
of tonight issued very early this morning looks good.

Central and northern counties of the state will dry out with
some brief/partial clearing possible, before winds veer all the
way around through the north and northeast, helping to develop a
widespread lowering stratus deck toward daybreak Wednesday.

&&

.SHORT TERM /WEDNESDAY THROUGH FRIDAY NIGHT/...
A wet and humid weather pattern is expected to last through the
end of the week as tropical moisture flowing northward collides
with a stalled frontal zone across the Mid Atlantic region. This
should result in some relatively cooler days (vs. mid-May
climo) and warmer nights given moist/humid airmass. Highest
precip probs are over south-central PA.

&&

.LONG TERM /SATURDAY THROUGH MONDAY/...
A persistent flow of subtropical moisture interacting with a
quasi-stationary frontal system will keep conditions soggy over
the region for the foreseeable future. The front will wag north
and south for the next several days bringing periods of showers
and thunderstorms with very little chance of any 12 hour period
remaining dry in any one location. Proximity of drier air mass
and high pressure to the north over southern Canada means that
drier air will filter southward into far northern PA from time
to time, giving at least some chance of periodic drier periods
this week, but the main story is for daily chances of showers
and thunderstorms until further notice. The Thursday night into
Friday timeframe looks particularly wet as deep layer moisture
surges (PW near 2.0") thanks to amplification of the offshore
upper ridge coupled with a nearly stationary upper trough over
the central plains. This will direct copious subtropical
moisture northward into the eastern GLAKS and set the stage for
locally heavy rains and potential flooding given what will have
been a very wet week by that time.

Temperatures should be above seasonal climate averages this week
with a muggy summertime/humid feel given dewpoints in the 60s.

&&

.AVIATION /16Z TUESDAY THROUGH SATURDAY/...
Widespread VFR conditions will be interrupted by a few brief
periods of MVFR/IFR with a gusty thunderstorm this afternoon and
early evening. Strongest westerly wind gusts expected across the
northern half of PA where westerly mid-level winds are over 50
kts.

A cold front will push south across the region This afternoon,
accompanied in many locations by a round of strong to
potentially severe thunderstorms, with briefly reduced
cigs/vsbys and possible strong wind gusts.

Outlook...

Wed-Thu...Rain/low cigs possible, mainly southern Pa.

Fri...Rain/low cigs likely.

Sat...Rain/low cigs possible.

&&

.HYDROLOGY...
Some repeat/training convection (on the tail end of fcst
damaging Tstm wind complex) is possible across the southern tier
of central PA mainly this evening. Collaborated with adjacent
offices on FF watch across srn PA although would have preferred
to issue a more short-fused watch. 1-3hr FFGs as low as 1-1.5
inches suggest some runoff problems are possible.

Deep moisture feed advecting northward along stalled frontal
boundary suggests potential for heavy rain/FF risk through late
week. Current WPC EROs favor areas just south of PA for marginal
to slight risk of flash flooding.

&&

.CTP WATCHES/WARNINGS/ADVISORIES...
Flash Flood Watch until midnight EDT tonight for PAZ033>036-
056-057-059-063>066.

&&

SYNOPSIS...Lambert
NEAR TERM...Lambert
SHORT TERM...Lambert/Steinbugl
LONG TERM...DeVoir
AVIATION...Lambert
HYDROLOGY...lambert

Hazardous weather outlook, May 15, 1:02 PM EDT, 1 hour 9 minutes before

Hazardous Weather Outlook
National Weather Service State College PA
102 PM EDT Tue May 15 2018

PAZ033>036-056-057-059-063>066-161715-
Somerset-Bedford-Fulton-Franklin-Perry-Dauphin-Lebanon-Cumberland-
Adams-York-Lancaster-
102 PM EDT Tue May 15 2018

...SEVERE THUNDERSTORM WATCH 93 IN EFFECT UNTIL 8 PM EDT THIS
EVENING...
...FLASH FLOOD WATCH IN EFFECT UNTIL MIDNIGHT EDT TONIGHT...

This Hazardous Weather Outlook is for central Pennsylvania.

.DAY ONE...This Afternoon and Tonight.

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

   Severe Thunderstorm Watch.
   Flash Flood Watch.

.DAYS TWO THROUGH SEVEN...Wednesday through Monday.

The probability for widespread hazardous weather is low.

.SPOTTER INFORMATION STATEMENT...

Spotters are encouraged to report significant hazardous weather.

PAZ005-006-010>012-017>019-024>028-045-049-050-161715-
McKean-Potter-Elk-Cameron-Northern Clinton-Clearfield-
Northern Centre-Southern Centre-Cambria-Blair-Huntingdon-Mifflin-
Juniata-Southern Clinton-Union-Snyder-
102 PM EDT Tue May 15 2018

...SEVERE THUNDERSTORM WATCH 93 IN EFFECT UNTIL 8 PM EDT THIS
EVENING...

This Hazardous Weather Outlook is for central Pennsylvania.

.DAY ONE...This Afternoon and Tonight.

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

   Severe Thunderstorm Watch.

.DAYS TWO THROUGH SEVEN...Wednesday through Monday.

The probability for widespread hazardous weather is low.

.SPOTTER INFORMATION STATEMENT...

Spotters are encouraged to report significant hazardous weather.

PAZ037-041-042-046-051>053-058-161715-
Tioga-Northern Lycoming-Sullivan-Southern Lycoming-Montour-
Northumberland-Columbia-Schuylkill-
102 PM EDT Tue May 15 2018

...SEVERE THUNDERSTORM WATCH 93 IN EFFECT UNTIL 8 PM EDT THIS
EVENING...

This Hazardous Weather Outlook is for central Pennsylvania.

.DAY ONE...This Afternoon and Tonight.

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

   Severe Thunderstorm Watch.

.DAYS TWO THROUGH SEVEN...Wednesday through Monday.

The probability for widespread hazardous weather is low.

.SPOTTER INFORMATION STATEMENT...

Spotters are encouraged to report significant hazardous weather.

PAZ004-161715-
Warren-
102 PM EDT Tue May 15 2018

This Hazardous Weather Outlook is for central Pennsylvania.

.DAY ONE...This Afternoon and Tonight.

The probability for widespread hazardous weather is low.

.DAYS TWO THROUGH SEVEN...Wednesday through Monday.

The probability for widespread hazardous weather is low.

.SPOTTER INFORMATION STATEMENT...

Spotters are encouraged to report significant hazardous weather.

In the hours before

Local storm report, May 15, 1:24 PM EDT, 47 minutes before

PRELIMINARY LOCAL STORM REPORT...CORRECTED
NATIONAL WEATHER SERVICE STATE COLLEGE PA
124 PM EDT TUE MAY 15 2018

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

1227 PM     TSTM WND DMG     1 N RIDGWAY             41.44N  78.73W
05/15/2018                   ELK                PA   EMERGENCY MNGR

            WIRES DOWN ON ROADWAY

&&

CORRECTED EVENT TIME...FATALITIES...INJURIES

EVENT NUMBER CTP1801801

COLBERT

Special weather statement, May 15, 1:34 PM EDT, 37 minutes before

Special Weather Statement
National Weather Service State College PA
134 PM EDT TUE MAY 15 2018

PAZ024-033-151815-
Somerset PA-Cambria PA-
134 PM EDT TUE MAY 15 2018

...STRONG THUNDERSTORMS WILL AFFECT PARTS OF SOMERSET AND CAMBRIA
COUNTIES UNTIL 215 PM EDT...

At 134 PM EDT, Doppler radar indicated strong thunderstorms along a
line extending from near Belsano to near Ligonier. Movement was east
at 40 mph.

Pea size hail and wind gusts up to 50 mph are possible.

Locations impacted include...
Belmont, Johnstown, Westmont, Nanty-Glo, Windber, Portage, Ebensburg,
Salix-Beauty Line Park, Scalp Level, Loretto, Belsano, Boswell,
Paint, Ogletown, Sankertown, Geistown, Beaverdale-Lloydell,
Davidsville, Vinco and Dunlo.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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 4018 7913 4036 7900 4057 7887 4059 7845
      4054 7848 4051 7854 4037 7856 4035 7861
      4031 7864 4028 7865 4026 7864 4012 7872
      4014 7916 4016 7916
TIME...MOT...LOC 1734Z 261DEG 33KT 4054 7884 4023 7928

RXR

Local storm report, May 15, 1:42 PM EDT, 29 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE STATE COLLEGE PA
142 PM EDT TUE MAY 15 2018

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

0119 PM     TSTM WND DMG     MAHAFFEY                40.88N  78.73W
05/15/2018                   CLEARFIELD         PA   EMERGENCY MNGR

            LARGE TREE DOWN BLOCKING BOTH LANES AT WEST MAIN STREET
            AND SPRUCE STREET.

&&

EVENT NUMBER CTP1801803

COLBERT

Local storm report, May 15, 1:55 PM EDT, 16 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE STATE COLLEGE PA
155 PM EDT TUE MAY 15 2018

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

0142 PM     TSTM WND DMG     1 NW OSCEOLA MILLS      40.86N  78.28W
05/15/2018                   CLEARFIELD         PA   EMERGENCY MNGR

            MULTIPLE TREES DOWN

&&

EVENT NUMBER CTP1801804

COLBERT

Special weather statement, May 15, 1:59 PM EDT, 12 minutes before

Special Weather Statement
National Weather Service State College PA
159 PM EDT TUE MAY 15 2018

PAZ024>026-151845-
Blair PA-Cambria PA-Huntingdon PA-
159 PM EDT TUE MAY 15 2018

...STRONG THUNDERSTORMS WILL AFFECT PARTS OF HUNTINGDON...BLAIR...AND
CAMBRIA COUNTIES UNTIL 245 PM EDT...

At 158 PM EDT, Doppler radar indicated strong thunderstorms along a
line extending from near Tyrone to near Horseshoe Curve to near East
Conemaugh. Movement was east at 30 mph.

Pea size hail and wind gusts of 50 to 55 mph are possible.

Strong thunderstorms will be near...
  Tyrone, Bald Eagle and Birmingham around 205 PM EDT.
  Altoona, Hollidaysburg and Warriors Mark around 210 PM EDT.
  Franklinville and Bellwood around 215 PM EDT.
  Sinking Valley, Canoe Creek State Park and Lilly around 220 PM
  EDT.
  Williamsburg around 230 PM EDT.
  Whipple Dam State Park and Spruce Creek around 235 PM EDT.

Other locations impacted by these storms include Tunnelhill, Spring
Hill, Cassandra, Marklesburg and McConnellstown.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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 4054 7857 4074 7826 4074 7813 4069 7794
      4074 7783 4072 7777 4073 7768 4069 7771
      4068 7768 4058 7783 4055 7784 4051 7783
      4039 7807 4032 7840 4032 7860 4033 7862
      4032 7863 4031 7900
TIME...MOT...LOC 1758Z 272DEG 27KT 4071 7824 4054 7849 4035 7884

Dangelo

Local storm report, May 15, 2:08 PM EDT, 3 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE STATE COLLEGE PA
208 PM EDT TUE MAY 15 2018

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

0200 PM     TSTM WND GST     1 E BELLWOOD            40.60N  78.31W
05/15/2018  M52 MPH          BLAIR              PA   PENNDOT RWIS

&&

EVENT NUMBER CTP1801805

RXR

The office that day

Everything else NWS State College, PA issued on the same UTC day.

Issued	Product	Office	Counties	Lasted
May 15, 3:47 AM EDT	Flash Flood Watch	CTP	Adams, Bedford, Cumberland, Dauphin, Franklin, Fulton and 5 more	15 hr
May 15, 8:16 AM EDT	Special Weather Statement	CTP	Tioga	44 min
May 15, 11:38 AM EDT	Special Weather Statement	CTP	Elk, McKean	52 min
May 15, 12:00 PM EDT	Severe Thunderstorm Warning	CTP	Cameron, Clearfield, Elk, McKean	75 min
May 15, 12:43 PM EDT	Severe Thunderstorm Warning	CTP	Cameron, Clinton, Elk, Potter	47 min
May 15, 12:46 PM EDT	Tornado Warning	CTP	Cameron, Clinton, Elk, Potter	44 min
May 15, 12:58 PM EDT	Severe Thunderstorm Warning	CTP	Cambria, Cameron, Clearfield, Clinton, Elk	57 min
May 15, 1:03 PM EDT	Special Weather Statement	CTP	Tioga	42 min
May 15, 1:14 PM EDT	Severe Thunderstorm Warning	CTP	Tioga	61 min
May 15, 1:25 PM EDT	Tornado Warning	CTP	Clinton, Lycoming, Potter, Tioga	65 min
May 15, 1:34 PM EDT	Special Weather Statement	CTP	Cambria	41 min
May 15, 1:42 PM EDT	Severe Thunderstorm Warning	CTP	Centre, Clearfield, Clinton, Lycoming	63 min
May 15, 1:59 PM EDT	Special Weather Statement	CTP	Blair	46 min
May 15, 2:04 PM EDT	Tornado Warning	CTP	Sullivan	41 min
May 15, 2:16 PM EDT	Severe Thunderstorm Warning	CTP	Centre, Clinton, Columbia, Huntingdon, Juniata, Lycoming and 6 more	74 min
May 15, 2:34 PM EDT	Severe Thunderstorm Warning	CTP	Blair, Huntingdon, Juniata, Mifflin, Perry	56 min
May 15, 2:45 PM EDT	Tornado Warning	CTP	Montour, Northumberland, Snyder, Union	24 min
May 15, 2:48 PM EDT	Tornado Warning	CTP	Columbia, Montour, Northumberland	42 min
May 15, 2:51 PM EDT	Special Weather Statement	CTP	Huntingdon	24 min
May 15, 3:14 PM EDT	Severe Thunderstorm Warning	CTP	Columbia, Dauphin, Juniata, Northumberland, Perry, Schuylkill and 1 more	46 min
May 15, 3:23 PM EDT	Special Weather Statement	CTP	Fulton	37 min
May 15, 3:34 PM EDT	Severe Thunderstorm Warning	CTP	Cumberland, Franklin, Perry	41 min
May 15, 3:45 PM EDT	Severe Thunderstorm Warning	CTP	Cumberland, Dauphin, Franklin, Fulton, Lancaster, Lebanon and 3 more	60 min
May 15, 4:14 PM EDT	Tornado Warning	CTP	Cumberland, Dauphin, Perry, York	31 min
May 15, 4:31 PM EDT	Severe Thunderstorm Warning	CTP	Adams, Cumberland, York	59 min
May 15, 4:41 PM EDT	Severe Thunderstorm Warning	CTP	Dauphin, Lancaster, Lebanon, York	53 min
May 15, 5:07 PM EDT	Severe Thunderstorm Warning	CTP	Adams, Lancaster, York	83 min
May 15, 6:02 PM EDT	Areal Flood Advisory	CTP	Lancaster, York	118 min

Nearby

Severe Thunderstorm Warnings in Pennsylvania, 2018 Every severe thunderstorm warning in 2018

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.