Alert archive / Ohio / Special Weather Statements in 2018

Special Weather Statement, NWS Charleston, WV

May 30, 2018Lawrence County, Ohio; Boyd County, Kentucky

NWS Charleston, WV issued this special weather statement at May 30, 2018, 4:11 PM EDT for Lawrence County, Ohio; Boyd County, Kentucky. It was in force for 34 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
May 30, 2018, 4:11 PM EDT (20:11 UTC)
Expired
May 30, 2018, 4:45 PM EDT
In force
34 min
Issued by
NWS Charleston, WV

Counties Boyd County, KY, Lawrence County, OH

The radar

The Charleston,WV radar (KRLX), 86 km from the middle of the area, began a volume at 20:11 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

Cncnati-Daytn, OH (KILN), launched 12:00Z, 8.2 hours before the alert went out and 142 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, Cncnati-Daytn, OH at 12:00Z on 2018-05-30Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 21 joules per kilogram.LCLLFCEL10008507005003002001001 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, Cncnati-Daytn, OH at 12:00Z on 2018-05-30The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 125 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
21 J/kg
Mixed-layer CIN
-73 J/kg
Mixed-layer LCL
1004 m above ground
0-6 km bulk shear
23 kt
0-1 km storm-relative helicity
125 m²/s²
0-3 km storm-relative helicity
159 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.0

Open this sounding in Storm Lab

The text

As transmitted.

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What forecasters said that day

The local office's own words before this special weather statement went out, as it sent them, from the Iowa Environmental Mesonet's archive of National Weather Service text.

NWS Charleston, WV wrote its last area forecast discussion before this special weather statement went out at May 30, 3:24 PM EDT, 47 minutes earlier.

Area forecast discussion, May 30, 3:24 PM EDT, 47 minutes before
Area Forecast Discussion
National Weather Service Charleston WV
324 PM EDT Wed May 30 2018

.SYNOPSIS...
Showers and thunderstorms continue through the rest of the
week, as remnants from Alberto push off to the east and an
upper level system affects the region.

&&

.NEAR TERM /THROUGH THURSDAY/...
As of 205 PM Wednesday...

Moisture from the remains of Alberto will continue to provide
chances for showers and thunderstorms into Thursday. The deeper
tropical moisture will be pulling off to the east on Thursday,
allowing for smaller chances of thunderstorms Thursday afternoon
in the western counties.

Based on the performance of MOS guidance last night, will go
toward the lower side of guidance for lows tonight.

&&

.SHORT TERM /THURSDAY NIGHT THROUGH SATURDAY NIGHT/...
As of 315 PM Wednesday...

As the deeper tropical moisture pulls east, we look upstream for
the next wx maker. This will arrive Thursday night courtesy of a
s/w trof with possibly an associating decaying convective
complex. A subsequent frontal passage is slated for Friday night
with shower/storms along and ahead of the boundary Friday
afternoon. This upper level system looks to close off along the
mid atlantic coast this weekend, providing for cooler air and
diurnally driven showers/thundershowers across the mountains.

&&

.LONG TERM /SUNDAY THROUGH WEDNESDAY/...
As of 315 PM Wednesday...

The upper level low lingers along the mid atlantic coast Sunday
before another upper level impulse dives Southeast toward the
area, evolving into an amplified mean trof across the
northeastern CONUS. The end result: Spring finally arrives to
the area, after having a nasty beginning to the season, followed
by a jump into summer.

&&

.AVIATION /19Z WEDNESDAY THROUGH MONDAY/...
As of 120 PM Wednesday...

Moisture from a tropical system will allow for restrictions in
scattered showers and thunderstorms. While these will be more
numerous and intense during the afternoon and evening hours,
some are possible at other times as well. A southeast wind flow
will also create MVFR clouds at times on the eastern slopes of
the mountains.

FORECAST CONFIDENCE AND ALTERNATE SCENARIOS THROUGH 18Z THURSDAY...

FORECAST CONFIDENCE: High, except medium with timing of showers
and thunderstorms.

ALTERNATE SCENARIOS: Timing of showers and thunderstorms could
vary.

EXPERIMENTAL TABLE OF FLIGHT CATEGORY OBJECTIVELY SHOWS CONSISTENCY
OF WFO FORECAST TO AVAILABLE MODEL INFORMATION:
H = HIGH:   TAF CONSISTENT WITH ALL MODELS OR ALL BUT ONE MODEL.
M = MEDIUM: TAF HAS VARYING LEVEL OF CONSISTENCY WITH MODELS.
L = LOW:    TAF INCONSISTENT WITH ALL MODELS OR ALL BUT ONE MODEL.

DATE                                                            FRI 05/25/18
UTC 1HRLY       00   01   02   03   04   05   06   07   08   09   10   11
EDT 1HRLY       20   21   22   23   00   01   02   03   04   05   06   07
CRW CONSISTENCY  H    H    H    H    H    H    H    H    H    H    H    M
HTS CONSISTENCY  H    H    H    H    H    H    H    H    H    H    H    M
BKW CONSISTENCY  H    H    H    H    H    H    H    H    H    H    H    L
EKN CONSISTENCY  H    H    H    H    H    H    H    H    H    H    H    M
PKB CONSISTENCY  H    H    H    H    H    H    H    H    H    H    H    M
CKB CONSISTENCY  H    H    H    H    H    H    H    H    H    H    H    M

AFTER 18Z THURSDAY...
IFR possible in thunderstorms Thursday afternoon.

&&

.RLX WATCHES/WARNINGS/ADVISORIES...
WV...None.
OH...None.
KY...None.
VA...None.

&&

SYNOPSIS...RPY/30
NEAR TERM...RPY
SHORT TERM...30
LONG TERM...30
AVIATION...RPY
Hazardous weather outlook, May 30, 3:25 AM EDT, 12 hours 46 minutes before
Hazardous Weather Outlook
National Weather Service Charleston WV
325 AM EDT Wed May 30 2018

KYZ101>103-105-OHZ066-067-075-076-083>087-VAZ003-004-WVZ005>011-
013>020-024>034-039-040-515>526-310730-
Greenup-Carter-Boyd-Lawrence KY-Perry-Morgan-Athens-Washington-
Jackson OH-Vinton-Meigs-Gallia-Lawrence OH-Dickenson-Buchanan-Wayne-
Cabell-Mason-Jackson WV-Wood-Pleasants-Tyler-Lincoln-Putnam-Kanawha-
Roane-Wirt-Calhoun-Ritchie-Doddridge-Mingo-Logan-Boone-Clay-Braxton-
Gilmer-Lewis-Harrison-Taylor-McDowell-Wyoming-Upshur-Barbour-
Northwest Raleigh-Southeast Raleigh-Northwest Fayette-
Southeast Fayette-Northwest Nicholas-Southeast Nicholas-
Northwest Webster-Southeast Webster-Northwest Pocahontas-
Southeast Pocahontas-Northwest Randolph-Southeast Randolph-
325 AM EDT Wed May 30 2018

This Hazardous Weather Outlook is for northeast Kentucky, southeast
Ohio, southwest Virginia and much of West Virginia.

.DAY ONE...Today and Tonight.

Showers and thunderstorms with heavy downpours expected Wednesday
afternoon into Thursday. Localized flash flooding will be possible
across the region.

.DAYS TWO THROUGH SEVEN...Thursday through Tuesday.

Showers and thunderstorms with heavy downpours expected through the
end of the week. A flash flood watch may be needed at a later time.

.SPOTTER INFORMATION STATEMENT...

Spotter activation is not expected at this time.

Kistner

In the hours before

Special weather statement, May 30, 4:11 PM EDT, 0 minutes before
Special Weather Statement
National Weather Service Charleston WV
411 PM EDT WED MAY 30 2018

KYZ101>103-OHZ087-302045-
Boyd-Greenup-Carter-Lawrence-
411 PM EDT WED MAY 30 2018

...A STRONG THUNDERSTORM WILL AFFECT BOYD...SOUTHEASTERN GREENUP...
EAST CENTRAL CARTER AND SOUTHWESTERN LAWRENCE COUNTIES...

At 410 PM EDT, a strong thunderstorm was located over Rush, or near
Cannonsburg, moving north at 35 mph.

Wind gusts up to 50 mph are possible with this storm.

Locations impacted include... Ashland, Ironton, Coal Grove, Lake
Vesuvius, Cannonsburg, Kenova, Catlettsburg, Princess, Coalton,
Naples, Rush, Flatwoods, South Point, Russell, Raceland,
Worthington, Wurtland, Bellefonte, Aid and Westwood.

This includes Interstate 64 in Kentucky between mile markers 177 and
191.

Torrential rainfall is also occurring with this storm, and may cause
localized flooding. Do not drive your vehicle through flooded
roadways.

This storm 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 3858 8280 3860 8274 3865 8277 3868 8276
      3868 8273 3861 8244 3841 8257 3842 8260
      3839 8260 3837 8259 3826 8266 3826 8270
      3833 8287
TIME...MOT...LOC 2010Z 198DEG 29KT 3834 8274

16

The office that day

Everything else NWS Charleston, WV issued on the same UTC day.

IssuedProductOfficeCountiesLasted
May 30, 4:47 PM EDTSpecial Weather StatementRLXPutnam28 min
May 30, 5:14 PM EDTSpecial Weather StatementRLXMason31 min
May 30, 5:40 PM EDTSevere Thunderstorm WarningRLXJackson, Mason35 min
May 30, 6:14 PM EDTSpecial Weather StatementRLXWood31 min
May 30, 6:46 PM EDTSpecial Weather StatementRLXWood29 min

Nearby

Special Weather Statements in Ohio, 2018Special Weather Statements in Kentucky, 2018Every special weather statement 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; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.