Alert archive / Texas / Severe Thunderstorm Warnings in 2021

Severe Thunderstorm Warning 98, NWS Shreveport, LA

April 14, 2021Smith County, Upshur County, Wood County, Texas

NWS Shreveport, LA issued this severe thunderstorm warning at Apr 14, 2021, 1:27 AM CDT for Smith County, Upshur County, Wood County, Texas. It was in force for 63 min. 1 report came from inside the area while it was in force.

The area

The outline as issued, with what was reported inside it.

The facts

Issued: Apr 14, 2021, 1:27 AM CDT (06:27 UTC)
Expired: Apr 14, 2021, 2:30 AM CDT
In force: 63 min
Issued by: NWS Shreveport, LA
Area: Storm-based polygon
Hail: 1.0 in
Wind: 50.0 mph

Counties Smith County, TX, Upshur County, TX, Wood County, TX

The radar

The Shreveport radar (KSHV), 129 km from the middle of the area, began a volume at 06:31 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.

What was reported inside it

Time	Report	Where	Remark
Apr 14, 1:28 AM CDT	HAIL 1	7 Ssw Winona, TX

Local storm reports filed while the alert was in force, from inside its polygon or its counties.

The nearest sounding before it

Shreveport, LA (KSHV), launched 00:00Z, 6.5 hours before the alert went out and 138 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: 1508 J/kg
Mixed-layer CIN: -7 J/kg
Mixed-layer LCL: 1286 m above ground
0-6 km bulk shear: 52 kt
0-1 km storm-relative helicity: -34 m²/s²
0-3 km storm-relative helicity: 24 m²/s²
Significant tornado parameter: 0.3
Supercell composite: 1.8

Open this sounding in Storm Lab

The text

As transmitted.

703 
WUUS54 KSHV 140627
SVRSHV
TXC423-459-499-140730-
/O.NEW.KSHV.SV.W.0098.210414T0627Z-210414T0730Z/

BULLETIN - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Warning
National Weather Service Shreveport LA
127 AM CDT Wed Apr 14 2021

The National Weather Service in Shreveport has issued a

* Severe Thunderstorm Warning for...
  Central Smith County in northeastern Texas...
  Southeastern Wood County in northeastern Texas...
  Southwestern Upshur County in northeastern Texas...

* Until 230 AM CDT.

* At 127 AM CDT, a severe thunderstorm was located near Tyler, moving
  north at 15 mph.

  HAZARD...Quarter size hail.

  SOURCE...Radar indicated.

  IMPACT...Damage to vehicles is expected.

* Locations impacted include...
  Tyler, Big Sandy, Hawkins, New Chapel Hill, Winona and Red Springs.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

For your protection move to an interior room on the lowest floor of a
building.

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

&&

LAT...LON 3229 9518 3231 9540 3264 9537 3261 9497
TIME...MOT...LOC 0627Z 185DEG 14KT 3238 9529 

HAIL...1.00IN
WIND...<50MPH
 
$$

24

2 follow-up statements

300 
WWUS54 KSHV 140644
SVSSHV

Severe Weather Statement
National Weather Service Shreveport LA
144 AM CDT Wed Apr 14 2021

TXC423-459-499-140730-
/O.CON.KSHV.SV.W.0098.000000T0000Z-210414T0730Z/
Smith TX-Wood TX-Upshur TX-
144 AM CDT Wed Apr 14 2021

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 230 AM CDT
FOR CENTRAL SMITH...SOUTHEASTERN WOOD AND SOUTHWESTERN UPSHUR
COUNTIES...

At 143 AM CDT, a severe thunderstorm was located 8 miles north of
Tyler, moving north at 20 mph.

HAZARD...Quarter size hail.

SOURCE...Radar indicated.

IMPACT...Damage to vehicles is expected.

Locations impacted include...
Tyler, Big Sandy, Hawkins, New Chapel Hill, Winona and Red Springs. 

PRECAUTIONARY/PREPAREDNESS ACTIONS...

For your protection move to an interior room on the lowest floor of a
building.

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

&&

LAT...LON 3229 9518 3230 9522 3237 9526 3240 9539
      3264 9537 3261 9497
TIME...MOT...LOC 0643Z 185DEG 14KT 3245 9528 

HAIL...1.00IN
WIND...<50MPH
 
$$

24

384 
WWUS54 KSHV 140656
SVSSHV

Severe Weather Statement
National Weather Service Shreveport LA
156 AM CDT Wed Apr 14 2021

TXC423-459-499-140730-
/O.CON.KSHV.SV.W.0098.000000T0000Z-210414T0730Z/
Smith TX-Wood TX-Upshur TX-
156 AM CDT Wed Apr 14 2021

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 230 AM CDT
FOR NORTHEASTERN SMITH...SOUTHEASTERN WOOD AND SOUTHWESTERN UPSHUR
COUNTIES...

At 155 AM CDT, a severe thunderstorm was located 7 miles southwest of
Hawkins, or 11 miles north of Tyler, moving north at 15 mph.

HAZARD...Quarter size hail.

SOURCE...Radar indicated.

IMPACT...Damage to vehicles is expected.

Locations impacted include...
Big Sandy, Hawkins, Winona and Red Springs. 

PRECAUTIONARY/PREPAREDNESS ACTIONS...

For your protection move to an interior room on the lowest floor of a
building.

Continuous cloud to ground lightning is occurring with this storm.
Move indoors immediately. Lightning is one of nature's leading
killers. Remember, if you can hear thunder, you are close enough to
be struck by lightning.

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

&&

LAT...LON 3240 9511 3243 9516 3244 9525 3245 9535
      3264 9534 3261 9497
TIME...MOT...LOC 0655Z 185DEG 14KT 3250 9527 

HAIL...1.00IN
WIND...<50MPH
 
$$

24

The office that day

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

Issued	Product	Office	Counties	Lasted
Apr 13, 7:16 PM CDT	Severe Thunderstorm Warning	SHV	Harrison, Panola	44 min
Apr 13, 7:30 PM CDT	Special Weather Statement	SHV	Shelby	30 min
Apr 13, 8:00 PM CDT	Severe Thunderstorm Warning	SHV	Harrison, Panola	38 min
Apr 13, 9:28 PM CDT	Special Weather Statement	SHV	Cherokee	62 min
Apr 13, 10:24 PM CDT	Special Weather Statement	SHV	Rusk	36 min
Apr 14, 12:55 AM CDT	Special Weather Statement	SHV	Smith	35 min
Apr 14, 1:13 AM CDT	Special Weather Statement	SHV	Smith	32 min
Apr 14, 1:59 AM CDT	Special Weather Statement	SHV	Upshur	31 min
Apr 14, 2:09 AM CDT	Special Weather Statement	SHV	Gregg	36 min
Apr 14, 2:33 AM CDT	Special Weather Statement	SHV	Upshur	42 min
Apr 14, 2:41 AM CDT	Special Weather Statement	SHV	Gregg	49 min
Apr 14, 3:30 AM CDT	Special Weather Statement	SHV	Marion	45 min
Apr 14, 4:29 AM CDT	Special Weather Statement	SHV	Franklin, Titus	46 min
Apr 14, 4:54 AM CDT	Severe Thunderstorm Warning	SHV	Bowie, Morris, Red River, Titus	50 min

Nearby

Severe Thunderstorm Warnings in Texas, 2021 Every severe thunderstorm warning 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; local storm reports from the same archive; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.