Alert archive / West Virginia / Special Weather Statements in 2017

Special Weather Statement, NWS Charleston, WV

July 10, 2017Braxton County, Gilmer County, West Virginia

NWS Charleston, WV issued this special weather statement at Jul 10, 2017, 8:02 PM EDT for Braxton County, Gilmer County, West Virginia. It was in force for 28 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: Jul 10, 2017, 8:02 PM EDT (00:02 UTC)
Expired: Jul 10, 2017, 8:30 PM EDT
In force: 28 min
Issued by: NWS Charleston, WV

Counties Braxton County, WV, Gilmer County, WV

The radar

The Charleston,WV radar (KRLX), 105 km from the middle of the area, began a volume at 00:01 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 00:00Z, 0.0 hours before the alert went out and 277 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: 299 J/kg
Mixed-layer CIN: -35 J/kg
Mixed-layer LCL: 1494 m above ground
0-6 km bulk shear: 33 kt
0-1 km storm-relative helicity: 73 m²/s²
0-3 km storm-relative helicity: 192 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 1.6

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 Jul 10, 3:41 PM EDT, 4 hours 21 minutes earlier.

Area forecast discussion, Jul 10, 3:41 PM EDT, 4 hours 21 minutes before

Area Forecast Discussion
National Weather Service Charleston WV
341 PM EDT Mon Jul 10 2017

.SYNOPSIS...
Weather remains unsettled due to a series of short waves and
frontal boundary across the region. Very warm mid week with a cold
front in the vicinity late in the week into the weekend.

&&

.NEAR TERM /THROUGH TUESDAY/...
As of 200 PM Monday...

Last of the showers and thunderstorms will continue to move east
across the northeast portion of WV this afternoon and exit the
area late this afternoon. A frontal boundary north of the area
will drop southward overnight and stall over the CWA on Tuesday.
SPC has the northern half of the CWA in a marginal risk. With
plenty of low level moisture in place and the expected short
wave trof to move along that boundary, expect scattered showers
thunderstorms to develop in the daytime heating. Shear will be
weak and any organized development will be brief with some hail
and possibly some damaging wind gusts. Temps will stay on the
warm side tonight and tomorrow. Some areas in the lowlands may
top out in the low 90s by tomorrow afternoon.

&&

.SHORT TERM /TUESDAY NIGHT THROUGH WEDNESDAY NIGHT/...
As of 340 PM Monday...

As upper level ridging builds to our south, upper flow is
expected to remain zonal. Lobes of energy advecting eastward in
the mean zonal flow will enhance chances for showers and storms,
primarily across central/northern counties through the short
term. Additionally, afternoon temperatures will climb into the
90s for most locations with 80s in the mountains. Increased
moisture will combine with warm temperatures to produce heat
index values in the mid to upper 90s across the lowlands.

&&

.LONG TERM /THURSDAY THROUGH MONDAY/...
As of 340 PM Monday...

Still eyeing a cold front that will approach the area by late
week. Current model guidance doesn't have the front crossing
until Friday, which would allow sufficient moisture return and
heating such that thunderstorms will be likely. It's difficult
to assess the magnitude of potential strong/severe storm threat
owing to lower-than-average model agreement and confidence.
Additionally, the phasing of wind dynamics and moisture may or
may not be favorable to support more robust convection. Still
expecting an unsettled pattern through the period with
additional thunder chances into at least the back half of the
weekend.

Temperatures will be slightly cooler than mid week owing to
increased cloud cover and periods of showers and storms.

&&

.AVIATION /20Z MONDAY THROUGH SATURDAY/...
As of 200 PM Monday...

A short wave over NE WW will continue to move east and exit the
region late this afternoon and early this evening. Brief
periods of MVFR conditions in cigs and vsbys in showers will
exit as well. VFR conditions will prevail through the early
morning hours on Tuesday. Increase in clouds will occur as a
frontal boundary drifts southward and stalls over the region on
Tuesday. Expect shwrs/tstms to develop along that boundary
during the afternoon hours on Tuesday with daytime heating.
Possible MVFR/IFR conditions in those shwrs/tstms. Expect winds
to generally be out of the SSW this evening and turning to the
SW 5-10kts on Tuesday with higher gusts 15-20kts in
shwrs/tstms.

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

FORECAST CONFIDENCE: High.

ALTERNATE SCENARIOS: Timing of showers and thunderstorms
development on Tuesday may 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.

UTC 1HRLY       18   19   20   21   22   23   00   01   02   03   04   05
EDT 1HRLY       14   15   16   17   18   19   20   21   22   23   00   01
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    M
EKN CONSISTENCY  H    H    H    H    H    H    H    H    H    H    H    L
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 TUESDAY...
Brief periods of IFR possible in showers and thunderstorms into
midweek.

&&

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

&&

SYNOPSIS...JS/DTC
NEAR TERM...JS
SHORT TERM...DTC
LONG TERM...DTC
AVIATION...JS

Hazardous weather outlook, Jul 10, 3:21 AM EDT, 16 hours 41 minutes before

Hazardous Weather Outlook
National Weather Service Charleston WV
321 AM EDT Mon Jul 10 2017

KYZ101>103-105-OHZ066-067-075-076-083>087-VAZ003-004-WVZ005>011-
013>020-024>034-039-040-515>526-110730-
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-
321 AM EDT Mon Jul 10 2017

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

.DAY ONE...Today and Tonight.

No hazardous weather is expected at this time.

.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.

In the hours before

Special weather statement, Jul 10, 7:05 PM EDT, 57 minutes before

Special Weather Statement
National Weather Service Charleston WV
705 PM EDT MON JUL 10 2017

OHZ066-067-075-102330-
Athens-Morgan-Perry-
705 PM EDT MON JUL 10 2017

...A STRONG THUNDERSTORM WILL AFFECT SOUTHEASTERN PERRY...WESTERN
MORGAN AND NORTH CENTRAL ATHENS COUNTIES...

At 705 PM EDT, a strong thunderstorm was located near New Lexington,
moving southeast at 30 mph.

Wind gusts up to 50 mph and nickel size hail are possible with this
storm.

Locations impacted include...
New Lexington, Glouster, Somerset, Shawnee, Perry State Forest,
Crooksville, Junction City, Corning, Hemlock, Rendville and Burr Oak
State Park.

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.

Do not drive your vehicle into areas where the water covers the
roadway. The water depth may be too great to allow your car to cross
safely. Move to higher ground.

LAT...LON 3970 8196 3953 8192 3949 8213 3953 8216
      3955 8216 3956 8219 3974 8236 3979 8235
      3981 8227
TIME...MOT...LOC 2305Z 303DEG 25KT 3972 8227

Cooper

Local storm report, Jul 10, 7:14 PM EDT, 48 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE CHARLESTON WV
714 PM EDT MON JUL 10 2017

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

0550 PM     TSTM WND DMG     2 W TRIMBLE             39.49N  82.12W
07/10/2017                   ATHENS             OH   EMERGENCY MNGR

            MULTIPLE HOMES WITH ROOF DAMAGE.

&&

EVENT NUMBER RLX1700549

KMC

Special weather statement, Jul 10, 7:14 PM EDT, 48 minutes before

Special Weather Statement
National Weather Service Charleston WV
714 PM EDT MON JUL 10 2017

OHZ075-085-WVZ007-009-110015-
Athens-Meigs-Mason-Wood-
714 PM EDT MON JUL 10 2017

...A STRONG THUNDERSTORM WILL AFFECT EASTERN MEIGS...SOUTH CENTRAL
ATHENS...NORTH CENTRAL MASON AND WEST CENTRAL WOOD COUNTIES...

At 714 PM EDT, a strong thunderstorm was located 7 miles east of
Albany, moving southeast at 35 mph.

Wind gusts of 50 to 55 mph and nickel size hail are possible with
this storm.

Locations impacted include...
Pomeroy, Racine, Forked Run State Park, New Haven, Mason, Tuppers
Plains, Chester, Syracuse, Hartford City, Darwin, Belleville and
Reedsville.

LAT...LON 3916 8169 3908 8177 3908 8181 3906 8181
      3905 8180 3891 8194 3921 8217 3931 8204
TIME...MOT...LOC 2314Z 303DEG 32KT 3920 8206

26

Special weather statement, Jul 10, 7:18 PM EDT, 44 minutes before

Special Weather Statement
National Weather Service Charleston WV
718 PM EDT MON JUL 10 2017

WVZ020-030-031-102345-
Doddridge-Harrison-Lewis-
718 PM EDT MON JUL 10 2017

...AN AREA OF STRONG THUNDERSTORMS WILL AFFECT SOUTHERN DODDRIDGE...
NORTH CENTRAL LEWIS AND SOUTHWESTERN HARRISON COUNTIES...

At 718 PM EDT, strong thunderstorms were clustered near West Union,
or 13 miles east of Harrisville, moving east at 40 mph.

Wind gusts up to 50 mph and nickel size hail are possible with these
storms.

Locations impacted include...
West Union, New Milton, Smithburg, Avon, Grove and Blandville.

This includes Route 50 in West Virginia between mile markers 48 and
62.

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.

Do not drive your vehicle into areas where the water covers the
roadway. The water depth may be too great to allow your car to cross
safely. Move to higher ground.

LAT...LON 3916 8083 3928 8087 3932 8064 3918 8050
      3912 8060
TIME...MOT...LOC 2318Z 269DEG 36KT 3921 8080

Cooper

Special weather statement, Jul 10, 7:27 PM EDT, 35 minutes before

Special Weather Statement
National Weather Service Charleston WV
727 PM EDT MON JUL 10 2017

WVZ032-040-110030-
Barbour-Taylor-
727 PM EDT MON JUL 10 2017

...A LINE OF STRONG THUNDERSTORMS WILL AFFECT TAYLOR AND NORTHERN
BARBOUR COUNTIES...

At 727 PM EDT, radar indicated strong thunderstorms were located
along a line extending from Fairmont to near Grafton to 6 miles
northwest of Philippi. Movement was east at 55 mph.

Wind gusts of 50 to 55 mph and dime size hail are possible with these
storms.

Locations impacted include...
Grafton, Philippi, Flemington, Valley Falls, Moatsville, Rosemont,
Knottsville, Nestorville, Meadland, Tygart Lake State Park, Thornton,
McGee and Galloway.

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

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.

Do not drive your vehicle into areas where the water covers the
roadway. The water depth may be too great to allow your car to cross
safely. Move to higher ground.

LAT...LON 3913 7984 3917 8022 3924 8016 3926 8018
      3929 8017 3939 8020 3941 8011 3939 8009
      3940 8003 3942 8000 3945 7994 3944 7990
      3930 7989 3929 7986 3924 7985 3923 7981
TIME...MOT...LOC 2327Z 266DEG 48KT 3948 8017 3930 8010 3919 8014

Cooper

Special weather statement, Jul 10, 7:31 PM EDT, 31 minutes before

Special Weather Statement
National Weather Service Charleston WV
731 PM EDT MON JUL 10 2017

WVZ018>020-029-110000-
Calhoun-Doddridge-Ritchie-Gilmer-
731 PM EDT MON JUL 10 2017

...A LINE OF STRONG THUNDERSTORMS WILL AFFECT NORTHEASTERN CALHOUN...
EASTERN RITCHIE...SOUTHWESTERN DODDRIDGE AND WESTERN GILMER
COUNTIES...

At 731 PM EDT, radar indicated strong thunderstorms were located
along a line extending from near Pennsboro to 7 miles northeast of
Spencer. Movement was east at 30 mph.

Wind gusts of 50 to 55 mph and nickel size hail are possible with
these storms.

Locations impacted include...
Harrisville, Grantsville, Pennsboro, Pullman, Auburn, Greenwood,
Smithville, Blandville, Mount Zion, Grove, Leopold, New Milton,
Newberne, Coxs Mills, Big Springs, Berea, Stumptown, Tanner,
Normantown and Burnt House.

This includes Route 50 in West Virginia between mile markers 40 and
53.

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

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 3927 8063 3876 8099 3888 8121 3900 8120
      3903 8116 3904 8118 3904 8119 3908 8119
      3931 8099
TIME...MOT...LOC 2331Z 283DEG 27KT 3927 8101 3890 8128

Cooper

The office that day

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

Issued	Product	Office	Counties	Lasted
Jul 10, 8:11 PM EDT	Special Weather Statement	RLX	Calhoun	34 min
Jul 10, 8:15 PM EDT	Special Weather Statement	RLX	Lewis, Upshur	30 min
Jul 10, 8:16 PM EDT	Special Weather Statement	RLX	Jackson	29 min
Jul 10, 8:27 PM EDT	Special Weather Statement	RLX	Braxton	33 min
Jul 10, 9:10 PM EDT	Special Weather Statement	RLX	Roane	35 min

Nearby

Special Weather Statements in West Virginia, 2017 Every 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.