Alert archive / Texas / Special Weather Statements in 2020

Special Weather Statement, NWS Shreveport, LA

July 5, 2020Harrison County, Texas

NWS Shreveport, LA issued this special weather statement at Jul 5, 2020, 10:10 PM CDT for Harrison County, Texas. It was in force for 65 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 5, 2020, 10:10 PM CDT (03:10 UTC)
Expired
Jul 5, 2020, 11:15 PM CDT
In force
65 min
Issued by
NWS Shreveport, LA

County Harrison County, TX

The radar

The Shreveport radar (KSHV), 40 km from the middle of the area, began a volume at 03:11 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

Shreveport, LA (KSHV), launched 00:00Z, 3.2 hours before the alert went out and 49 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, Shreveport, LA at 00:00Z on 2020-07-06Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 1307 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, Shreveport, LA at 00:00Z on 2020-07-06The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 19 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
1307 J/kg
Mixed-layer CIN
-14 J/kg
Mixed-layer LCL
942 m above ground
0-6 km bulk shear
23 kt
0-1 km storm-relative helicity
19 m²/s²
0-3 km storm-relative helicity
123 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.0

Open this sounding in Storm Lab

The text

As transmitted.

828 
WWUS84 KSHV 060310
SPSSHV

Special Weather Statement
National Weather Service Shreveport LA
1010 PM CDT Sun Jul 5 2020
 
TXZ138-151-060415-
Panola TX-Harrison TX-
1010 PM CDT Sun Jul 5 2020

...SIGNIFICANT WEATHER ADVISORY FOR SOUTHEASTERN HARRISON AND
NORTHEASTERN PANOLA COUNTIES UNTIL 1115 PM CDT...

At 1009 PM CDT, Doppler radar was tracking a strong thunderstorm near
Marshall, moving east at 15 mph.

Pea size hail and winds in excess of 40 mph will be possible with
this storm.

Locations impacted include...
Marshall, Elysian Fields, Scottsville and Jonesville. 

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

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.

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 3232 9439 3253 9439 3257 9410 3233 9408
TIME...MOT...LOC 0309Z 268DEG 9KT 3245 9436 

$$

19

The office that day

Everything else NWS Shreveport, LA issued on the same UTC day.

IssuedProductOfficeCountiesLasted
Jul 5, 7:04 PM CDTSpecial Weather StatementSHVWood56 min
Jul 5, 7:58 PM CDTSpecial Weather StatementSHVGregg, Smith62 min
Jul 5, 8:38 PM CDTSevere Thunderstorm WarningSHVGregg, Rusk, Smith52 min
Jul 5, 9:21 PM CDTSpecial Weather StatementSHVPanola54 min
Jul 5, 9:30 PM CDTSpecial Weather StatementSHVRusk45 min
Jul 5, 10:12 PM CDTSpecial Weather StatementSHVRusk63 min
Jul 5, 11:10 PM CDTSpecial Weather StatementSHVSan Augustine, Shelby65 min
Jul 6, 10:11 AM CDTAreal Flood AdvisorySHVCass, Harrison, Marion3 hr
Jul 6, 12:16 PM CDTFlash Flood Warning Considerable damage threatSHVBowie60 min
Jul 6, 2:30 PM CDTFlash Flood WarningSHVCass, Franklin, Morris, Titus3 hr
Jul 5, 11:00 PM CDTSpecial Weather StatementSHVCaddo60 min
Jul 6, 8:23 AM CDTAreal Flood AdvisorySHVGrant, Natchitoches3 hr
Jul 6, 2:32 PM CDTAreal Flood AdvisorySHVCaldwell, Jackson, LaSalle, Winn3 hr
Jul 6, 4:03 PM CDTSpecial Weather StatementSHVRed River57 min
Jul 6, 4:37 PM CDTSpecial Weather StatementSHVRed River53 min
Jul 6, 1:47 PM CDTFlash Flood WarningSHVColumbia, Lafayette, Nevada, Union3 hr

Nearby

Special Weather Statements in Texas, 2020Every special weather statement in 2020

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.