Alert archive / Texas / Severe Thunderstorm Warnings in 2021

Severe Thunderstorm Warning 177, NWS Shreveport, LA

June 14, 2021Upshur County, Texas

NWS Shreveport, LA issued this severe thunderstorm warning at Jun 14, 2021, 1:16 AM CDT for Upshur County, Texas. It was in force for 30 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: Jun 14, 2021, 1:16 AM CDT (06:16 UTC)
Expired: Jun 14, 2021, 1:46 AM CDT
In force: 30 min
Issued by: NWS Shreveport, LA
Area: Storm-based polygon
Hail: 1.0 in
Wind: 60.0 mph

County Upshur County, TX

The radar

The Shreveport radar (KSHV), 104 km from the middle of the area, began a volume at 06:19 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
Jun 14, 1:25 AM CDT	HAIL 1	Gilmer, TX	QUARTER INCH HAIL REPORTED AT A FAST FOOD RESTAURANT ON THE NORTH SIDE OF GILMER.

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, 6.3 hours before the alert went out and 111 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: 1911 J/kg
Mixed-layer CIN: -20 J/kg
Mixed-layer LCL: 1687 m above ground
0-6 km bulk shear: 15 kt
0-1 km storm-relative helicity: -3 m²/s²
0-3 km storm-relative helicity: 51 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.0

Open this sounding in Storm Lab

The text

As transmitted.

387 
WUUS54 KSHV 140616
SVRSHV
TXC459-140700-
/O.NEW.KSHV.SV.W.0177.210614T0616Z-210614T0700Z/

BULLETIN - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Warning
National Weather Service Shreveport LA
116 AM CDT Mon Jun 14 2021

The National Weather Service in Shreveport has issued a

* Severe Thunderstorm Warning for...
  Central Upshur County in northeastern Texas...

* Until 200 AM CDT.

* At 116 AM CDT, a severe thunderstorm was located over Gilmer,
  moving west at 10 mph.

  HAZARD...60 mph wind gusts and quarter size hail.

  SOURCE...Radar indicated.

  IMPACT...Hail damage to vehicles is expected. Expect wind damage 
           to roofs, siding, and trees.

* Locations impacted include...
  Gilmer, East Mountain, Diana, Midway, Bettie and Lafayette. 

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

&&

LAT...LON 3290 9493 3290 9484 3273 9470 3269 9470
      3259 9488 3287 9511
TIME...MOT...LOC 0616Z 069DEG 10KT 3275 9492 

HAIL...1.00IN
WIND...60MPH
 
$$

13

1 follow-up statement

278 
WWUS54 KSHV 140646
SVSSHV

Severe Weather Statement
National Weather Service Shreveport LA
146 AM CDT Mon Jun 14 2021

TXC459-140656-
/O.CAN.KSHV.SV.W.0177.000000T0000Z-210614T0700Z/
Upshur TX-
146 AM CDT Mon Jun 14 2021

...THE SEVERE THUNDERSTORM WARNING FOR CENTRAL UPSHUR COUNTY IS
CANCELLED...
        
The storm which prompted the warning has weakened below severe
limits, and has exited the warned area. Therefore, the warning has
been cancelled.

LAT...LON 3290 9493 3290 9484 3273 9470 3269 9470
      3259 9488 3287 9511
TIME...MOT...LOC 0642Z 069DEG 10KT 3272 9501 

$$

13

The office that day

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

Issued	Product	Office	Counties	Lasted
Jun 14, 12:19 AM CDT	Severe Thunderstorm Warning	SHV	Harrison, Panola, Rusk	26 min
Jun 14, 12:49 AM CDT	Special Weather Statement	SHV	Gregg, Upshur	41 min
Jun 14, 1:46 AM CDT	Special Weather Statement	SHV	Wood	44 min
Jun 14, 3:06 AM CDT	Heat Advisory	SHV	Angelina, Cherokee, Gregg, Harrison, Marion, Nacogdoches and 7 more	16 hr

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.