Alert archive / Ohio / Special Weather Statements in 2021

Special Weather Statement, NWS Charleston, WV

July 29, 2021Lawrence County, Ohio

NWS Charleston, WV issued this special weather statement at Jul 29, 2021, 7:21 PM EDT for Lawrence County, Ohio. It was in force for 9 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 29, 2021, 7:21 PM EDT (23:21 UTC)
Expired
Jul 29, 2021, 7:30 PM EDT
In force
9 min
Issued by
NWS Charleston, WV

County Lawrence County, OH

The radar

The Charleston,WV radar (KRLX), 89 km from the middle of the area, began a volume at 23:21 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, 11.4 hours before the alert went out and 130 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 2021-07-29Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 1163 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 2021-07-29The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 108 square meters per square second.193958Sfc1 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
1163 J/kg
Mixed-layer CIN
-29 J/kg
Mixed-layer LCL
775 m above ground
0-6 km bulk shear
24 kt
0-1 km storm-relative helicity
108 m²/s²
0-3 km storm-relative helicity
109 m²/s²
Significant tornado parameter
0.0
Supercell composite
2.2

Open this sounding in Storm Lab

The text

As transmitted.

695 
WWUS81 KRLX 292321
SPSRLX

Special Weather Statement
National Weather Service Charleston WV
721 PM EDT Thu Jul 29 2021

OHZ087-292330-
Lawrence-
721 PM EDT Thu Jul 29 2021

...A STRONG THUNDERSTORM WILL AFFECT NORTHWESTERN LAWRENCE COUNTY...

At 720 PM EDT, a strong thunderstorm was located near South Webster,
or 9 miles south of Oak Hill, moving southeast at 45 mph.

Wind gusts of 50 to 55 mph are possible with this storm.

Locations impacted include...
Vernon and Waterloo. 

LAT...LON 3875 8270 3875 8266 3883 8265 3880 8258
      3878 8258 3878 8253 3876 8248 3874 8249
      3874 8247 3872 8247 3860 8257 3870 8270
TIME...MOT...LOC 2320Z 309DEG 38KT 3876 8264 

$$

25

The office that day

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

IssuedProductOfficeCountiesLasted
Jul 29, 12:42 PM EDTSpecial Weather StatementRLXDoddridge, Harrison, Tyler33 min
Jul 29, 1:14 PM EDTSpecial Weather StatementRLXDoddridge31 min
Jul 29, 1:16 PM EDTSevere Thunderstorm WarningRLXBarbour, Doddridge, Harrison, Lewis, Upshur29 min
Jul 29, 6:39 PM EDTSpecial Weather StatementRLXDoddridge36 min
Jul 29, 4:55 PM EDTSevere Thunderstorm WarningRLXWashington54 min
Jul 29, 7:36 PM EDTSpecial Weather StatementRLXLawrence24 min

Nearby

Special Weather Statements in Ohio, 2021Every special weather statement in 2021

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.