Alert archive / Ohio / Special Weather Statements in 2017

Special Weather Statement, NWS Cleveland, OH

August 2, 2017Mahoning County, Ohio

NWS Cleveland, OH issued this special weather statement at Aug 2, 2017, 8:07 PM EDT for Mahoning County, Ohio. It was in force for 23 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
Aug 2, 2017, 8:07 PM EDT (00:07 UTC)
Expired
Aug 2, 2017, 8:30 PM EDT
In force
23 min
Issued by
NWS Cleveland, OH

County Mahoning County, OH

The radar

The Pittsburgh radar (KPBZ), 77 km from the middle of the area, began a volume at 00:10 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

Pittsburgh, PA (KAGC), launched 00:00Z, 0.1 hours before the alert went out and 93 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, Pittsburgh, PA at 00:00Z on 2017-08-03Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 337 joules per kilogram.LCLLFCEL10008507005003002001001 km2 km3 km6 km9 km12 km15 km-30°-20°-10°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Pittsburgh, PA at 00:00Z on 2017-08-03The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 23 square meters per square second.1939Sfc1 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
337 J/kg
Mixed-layer CIN
-18 J/kg
Mixed-layer LCL
1540 m above ground
0-6 km bulk shear
12 kt
0-1 km storm-relative helicity
23 m²/s²
0-3 km storm-relative helicity
28 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.0

Open this sounding in Storm Lab

The text

As transmitted.

273 
WWUS81 KCLE 030007
SPSCLE

Special Weather Statement
National Weather Service Cleveland OH
807 PM EDT WED AUG 2 2017

OHZ022-023-033-030030-
Portage-Mahoning-Trumbull-
807 PM EDT WED AUG 2 2017

...A LINE OF STRONG THUNDERSTORMS WILL AFFECT SOUTHEASTERN PORTAGE...
MAHONING AND SOUTHWESTERN TRUMBULL COUNTIES...

At 806 PM EDT, radar indicated strong thunderstorms were located
along a line extending from near Lordstown to 7 miles northeast of
Sebring. Movement was east at 15 mph.

Winds in excess of 30 mph and half inch hail are possible with these
storms. Torrential rainfall is also occurring with these storms, and 
may cause localized flooding. Do not drive your vehicle through 
flooded roadways. 

Locations impacted include...
Youngstown, Salem, Boardman, Niles, Canfield, Newton Falls, Sebring,
Lordstown, Hilltop, Austintown, Girard, McDonald, Atwater, Ellsworth,
Craig Beach, Beloit, Deerfield, North Jackson, Berlin Center and
Maple Ridge.

Frequent cloud to ground lightning is occurring with this storm.
Lightning can strike 10 miles away from a thunderstorm. Seek a safe
shelter inside a building or vehicle.

LAT...LON 4099 8109 4099 8121 4118 8095 4119 8068
      4091 8072 4090 8075 4090 8082 4093 8083
      4093 8089 4090 8090 4090 8108
TIME...MOT...LOC 0006Z 226DEG 15KT 4114 8088 4102 8097 4097 8112 

$$

Clark

The office that day

Everything else NWS Cleveland, OH issued on the same UTC day.

IssuedProductOfficeCountiesLasted
Aug 2, 8:40 PM EDTAreal Flood AdvisoryCLEPortage3 hr
Aug 3, 1:43 PM EDTSpecial Marine WarningCLE92 min
Aug 3, 2:09 PM EDTSpecial Marine WarningCLE66 min
Aug 3, 3:39 PM EDTSpecial Weather StatementCLEAshtabula, Lake66 min
Aug 3, 6:11 PM EDTSpecial Marine WarningCLE34 min
Aug 3, 7:38 PM EDTSevere Thunderstorm WarningCLEHuron, Seneca52 min

Nearby

Special Weather Statements in Ohio, 2017Every special weather statement in 2017

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.