Warm and humid conditions were in place across eastern Ohio on June 13th behind a warm front. After morning showers departed, instability was able to build during the afternoon hours.
Every event with a place to put it. Tap one for its entry below.
Deaths and injuries are direct and indirect together, as the offices filed them. Damage is property and crops in the dollars of the year, not adjusted for inflation, and only where an office estimated it.
The episode as NWS PBZ wrote it up.
Warm and humid conditions were in place across eastern Ohio on June 13th behind a warm front. After morning showers departed, instability was able to build during the afternoon hours. A strong shortwave was able to generate high levels of deep layer shear, which allowed for the development of thunderstorms during the afternoon and early evening, a few of which became severe. Harrison County was hit with a severe storms that caused some tree damage. The severe weather threat ended with a passage of a cold front during the evening.
The local office's own words before the first event, as it sent them, from the Iowa Environmental Mesonet's archive of National Weather Service text.
NWS Pittsburgh, PA wrote its last area forecast discussion before the first event at Jun 13, 3:49 PM EST, 1 hour 44 minutes earlier.
Area Forecast Discussion...UPDATED National Weather Service Pittsburgh PA 449 PM EDT Wed Jun 13 2018 .SYNOPSIS... Strong storms will be possible this evening with a crossing cold front. Dry conditions and seasonal temperatures then expected the remainder of the week. Above normal temperatures expected for the weekend. && .NEAR TERM /UNTIL 6 AM THURSDAY MORNING/... 450pm update...continue to monitor the development of showers/storms ahead of what appears to be a weak pre-frontal trough. These storms are very pulse in nature and are currently unable to reach strong to severe levels. This is likely due to the slow destabilization of the atmosphere and the lack of large scale ascension or a strong forcing mechanism. Still expect strong activity to develop as atmosphere is destabilizing with the loss of low cloud cover and the main cold front will increase low-level forcing as it passes through. Not totally convinced on the severe threat at this time, as main shortwave will remain well to the north of the area, so storm development and intensification will rely heavily on an increasingly unstable atmosphere and the speed shear already in place. Have updated PoPs through the evening in line with the latest radar trends and hires model guidance. Temperatures were also tweaked in line with hires guidance. Previous discussion... The full array of severe weather will be possible, including an isolated tornado or two....with sufficient deep layer shear, steep lapse rates, and fat CAPE profiles within the hail growth region. The main factor still causing some uncertainty is the large intrusion of dry mid level air, which will either jack up downdraft CAPE or cool/impede the updrafts sufficiently to at least limit coverage, especially in light of normalized CAPE projections, which indicate a lack of overall explosiveness. Minimal change was needed to the inherited forecast. && .SHORT TERM /6 AM THURSDAY MORNING THROUGH FRIDAY/... Building sfc high pressure under NW flow aloft will ensure a dry Thursday and Friday with temperatures near the averages. && .LONG TERM /FRIDAY NIGHT THROUGH WEDNESDAY/... An amplifying Eastern CONUS ridge responding to deep Wrn CONUS troughing is likely to support warming temperature into early next week. Dry weather should dominate, but MCS, or remnant invasion in the NNWly flow on the flank of that ridge may mar the dry prognosis. Low POPs have been added for that potential, but not hit hard given confidence limitations in the scenario. Otherwise, the weather will feature nr-90 F high temperatures by the beginning of the new week. The cutoff of the Wrn trough with splitting flow, and the eastern progress of a resulting northern stream shortwave are forecast to erode that ridge and send a cold front across the Upper Ohio by Tuesday with convection in accompaniment, but with only slightly cooler temperature in the wake. && .AVIATION /21Z WEDNESDAY THROUGH MONDAY/... Steepening mid-level lapse rates will aid in the development of deep convection along and ahead of a surging cold front as a shortwave trough advances through the Great Lakes Region. Brief restrictions in storms can be expected. The front will cross all terminals between 13/21-14/03Z, with all storms translating ewd by late evening. Dry air advection and light nly wind will eliminate all low clouds by mid-evening. Any fog tonight will be localized to river valleys as cooler air settles atop warm water. OUTLOOK... No widespread restrictions are expected amid high pressure until storms return to the forecast on Mon. && .PBZ WATCHES/WARNINGS/ADVISORIES... MD...None. OH...None. PA...None. WV...None. &&
Hazardous Weather Outlook National Weather Service Pittsburgh PA 225 AM EDT Wed Jun 13 2018 MDZ001-OHZ039>041-048>050-057>059-068-069-PAZ007>009-013>016-020>023- 029-031-073>076-WVZ001>004-012-021-509>514-140630- Garrett-Tuscarawas-Carroll-Columbiana-Coshocton-Harrison-Jefferson- Muskingum-Guernsey-Belmont-Noble-Monroe-Mercer-Venango-Forest- Lawrence-Butler-Clarion-Beaver-Allegheny-Armstrong-Indiana- Washington-Greene-Westmoreland-Westmoreland Ridges-Fayette- Fayette Ridges-Hancock-Brooke-Ohio-Marshall-Wetzel-Marion-Monongalia- Ridges of Eastern Monongalia and Northwestern Preston-Preston- Eastern Preston-Western Tucker-Eastern Tucker- 225 AM EDT Wed Jun 13 2018 This Hazardous Weather Outlook is for western Maryland, east central Ohio, northwest Pennsylvania, southwest Pennsylvania, west central Pennsylvania, western Pennsylvania, northern West Virginia and northern panhandle of West Virginia. .DAY ONE...Today and Tonight. Numerous thunderstorms with scattered incidents of severe weather are likely this afternoon and early evening. Primary severe threats from damaging wind gusts are anticipated with isolated large hail. Isolated tornadoes are possible. .DAYS TWO THROUGH SEVEN...Thursday through Tuesday. No hazardous weather is expected at this time. .SPOTTER INFORMATION STATEMENT... Weather spotters are encouraged to report significant weather conditions according to Standard Operating Procedures.
Special Weather Statement
National Weather Service Pittsburgh PA
528 PM EDT WED JUN 13 2018
PAZ014-015-022-132215-
Armstrong-Butler-Clarion-
528 PM EDT WED JUN 13 2018
...A STRONG THUNDERSTORM CAPABLE OF PRODUCING GUSTY WIND AND HEAVY
RAIN WILL AFFECT EAST CENTRAL BUTLER...WEST CENTRAL ARMSTRONG AND
SOUTH CENTRAL CLARION COUNTIES...
At 528 PM EDT, a strong thunderstorm was located near
Shanor-Northvue, or 7 miles north of Butler, moving east at 25 mph.
Wind gusts up to 50 mph are possible with this storm.
Locations impacted include...
Shanor-Northvue... Chicora...
East Brady... Petrolia...
Karns City... Fairview...
West Sunbury... Hooker...
Torrential rainfall also is occurring with this storm and may cause
localized flooding. Do not drive your vehicle through flooded
roadways.
This storm may intensify, so monitor local radio or television
stations for additional information and possible warnings from the
National Weather Service.
LAT...LON 4093 7997 4100 7995 4103 7992 4103 7948
4083 7957
TIME...MOT...LOC 2128Z 274DEG 23KT 4097 7986
TAXSpecial Weather Statement
National Weather Service Pittsburgh PA
535 PM EDT WED JUN 13 2018
OHZ048-057-058-132215-
Guernsey-Coshocton-Muskingum-
535 PM EDT WED JUN 13 2018
...A STRONG THUNDERSTORM CAPABLE OF PRODUCING GUSTY WIND AND HEAVY
RAIN WILL AFFECT NORTHWESTERN GUERNSEY...SOUTHEASTERN COSHOCTON AND
NORTHEASTERN MUSKINGUM COUNTIES...
At 534 PM EDT, a strong thunderstorm was located over Dresden, or 10
miles north of Zanesville, moving east at 30 mph.
Wind gusts up to 50 mph are possible with this storm.
Locations impacted include...
Cambridge... New Concord...
Dresden... Frazeysburg...
Conesville... Plainfield...
Otsego... Drake...
Boden...
This includes Interstate 70 in Ohio between mile markers 174 and
177.
Torrential rainfall also is occurring with this storm and may cause
localized flooding. Do not drive your vehicle through flooded
roadways.
This storm may intensify, so monitor local radio or television
stations for additional information and possible warnings from the
National Weather Service.
LAT...LON 4003 8209 4016 8212 4023 8164 4011 8159
3999 8160
TIME...MOT...LOC 2134Z 269DEG 29KT 4009 8203
TAXPRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE PITTSBURGH PA
619 PM EDT WED JUN 13 2018
..TIME... ...EVENT... ...CITY LOCATION... ...LAT.LON...
..DATE... ....MAG.... ..COUNTY LOCATION..ST.. ...SOURCE....
..REMARKS..
0615 PM TSTM WND DMG KITTANNING 40.83N 79.52W
06/13/2018 ARMSTRONG PA FIRE DEPT/RESCUE
TREES DOWN, WIRES DOWN
&&
EVENT NUMBER PBZ1803140
MFPRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE PITTSBURGH PA
622 PM EDT WED JUN 13 2018
..TIME... ...EVENT... ...CITY LOCATION... ...LAT.LON...
..DATE... ....MAG.... ..COUNTY LOCATION..ST.. ...SOURCE....
..REMARKS..
0620 PM TSTM WND DMG KITTANNING 40.82N 79.52W
06/13/2018 ARMSTRONG PA EMERGENCY MNGR
MULTIPLE TREES DOWN
&&
EVENT NUMBER PBZ1803141
MFPRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE PITTSBURGH PA
631 PM EDT WED JUN 13 2018
..TIME... ...EVENT... ...CITY LOCATION... ...LAT.LON...
..DATE... ....MAG.... ..COUNTY LOCATION..ST.. ...SOURCE....
..REMARKS..
0620 PM FUNNEL CLOUD KITTANNING 40.83N 79.52W
06/13/2018 ARMSTRONG PA PUBLIC
FUNNEL CLOUD REPORTED NEAR EAST FRANKLIN SHOPPING
CENTER
&&
EVENT NUMBER PBZ1803142
MFThe Pittsburgh radar (KPBZ), 95 km away, was scanning. The volume nearest the first event began at 22:32 UTC.
2 thunderstorm wind. Local standard time, as filed.
A cooperative observer reported that a few trees were blown down along US Route 22 near Ohio Route 800.
A cooperative observer reported that large limbs were snapped near Piedmont.
After NWS Directive 10-1605, the rules offices file Storm Data by.
Every storm in Ohio in 2018Every state in 2018This day in weather historyWarnings in Ohio, June 2018
NOAA National Centers for Environmental Information, Storm Events Database, compiled from the National Weather Service’s monthly Storm Data. Complete through 2026-06; NCEI adds each month about 75 days after it ends and revises past years a few times a year. Rebuilt 2026-09-24. Each event’s entry at NCEI: 768741, 770818.