Alert archive / Texas / Severe Thunderstorm Warnings in 2021
Severe Thunderstorm Warning 137, NWS Shreveport, LA
NWS Shreveport, LA issued this severe thunderstorm warning at May 10, 2021, 1:00 PM CDT for 6 counties in Texas. It was in force for 45 min. 5 reports 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
- May 10, 2021, 1:00 PM CDT (18:00 UTC)
- Expired
- May 10, 2021, 1:45 PM CDT
- In force
- 45 min
- Issued by
- NWS Shreveport, LA
- Area
- Storm-based polygon
- Hail
- 1.5 in
- Wind
- 60.0 mph
Counties Camp County, TX, Cass County, TX, Marion County, TX, Morris County, TX, Titus County, TX, Upshur County, TX
The radar
The Shreveport radar (KSHV), 110 km from the middle of the area, began a volume at 18:02 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 |
|---|---|---|---|
| May 10, 1:00 PM CDT | HAIL 1.75 | 4 N Pittsburg, TX | SPOTTER NETWORK REPORTS. |
| May 10, 1:06 PM CDT | HAIL 1.25 | 2 Sse Mount Pleasant, TX | REPORT FROM MPING: HALF DOLLAR (1.25 IN.). |
| May 10, 1:30 PM CDT | HAIL 1.25 | 3 Ne Daingerfield, TX | HAM/SPOTTER REPORTS QUARTERS TO HALF DOLLAR SIZE HAIL. |
| May 10, 1:54 PM CDT | HAIL 1.5 | 3 Ne Daingerfield, TX | HALF DOLLAR TO PING PONG SIZE HAIL AND 1.24 INCHES OF RAIN IN 55 MINUTES. |
| May 10, 1:55 PM CDT | HAIL 1.5 | Hughes Springs, 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 12:00Z, 6.0 hours before the alert went out and 115 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.
- Mixed-layer CAPE
- 257 J/kg
- Mixed-layer CIN
- -87 J/kg
- Mixed-layer LCL
- 552 m above ground
- 0-6 km bulk shear
- 49 kt
- 0-1 km storm-relative helicity
- 64 m²/s²
- 0-3 km storm-relative helicity
- 74 m²/s²
- Significant tornado parameter
- 0.1
- Supercell composite
- 2.4
The text
As transmitted.
919
WUUS54 KSHV 101800
SVRSHV
TXC063-067-315-343-449-459-101845-
/O.NEW.KSHV.SV.W.0137.210510T1800Z-210510T1845Z/
BULLETIN - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Warning
National Weather Service Shreveport LA
100 PM CDT Mon May 10 2021
The National Weather Service in Shreveport has issued a
* Severe Thunderstorm Warning for...
Northwestern Marion County in northeastern Texas...
Southwestern Cass County in northeastern Texas...
Northeastern Upshur County in northeastern Texas...
Morris County in northeastern Texas...
Southern Titus County in northeastern Texas...
Camp County in northeastern Texas...
* Until 145 PM CDT.
* At 1259 PM CDT, a severe thunderstorm was located over Pittsburg,
moving southeast at 40 mph.
HAZARD...Ping pong ball size hail and 60 mph wind gusts.
SOURCE...Trained weather spotters. At 1255 PM CDT, large hail was
reported in Pittsburg.
IMPACT...People and animals outdoors will be injured. Expect hail
damage to roofs, siding, windows, and vehicles. Expect
wind damage to roofs, siding, and trees.
* Locations impacted include...
Mount Pleasant, Pittsburg, Leesburg, Daingerfield, Linden, Hughes
Springs, Lone Star, Omaha, Cason, Cookville, Jenkins, Rocky Branch,
Cedar Springs, Avinger, Rocky Mound, Lassater, Holly Springs,
Roeder, Harvard and Lafayette.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
For your protection move to an interior room on the lowest floor of a
building.
This storm is producing large hail. SEEK SHELTER NOW inside a sturdy
structure and stay away from windows!
This is a dangerous storm. Prepare immediately for large destructive
hail capable of producing significant damage. People outside should
move to shelter inside a strong building, and stay away from
windows.
&&
LAT...LON 3297 9512 3323 9504 3318 9466 3314 9434
3274 9444
TIME...MOT...LOC 1759Z 295DEG 37KT 3302 9494
HAIL...1.50IN
WIND...60MPH
$$
19The office that day
Everything else NWS Shreveport, LA issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| May 9, 8:20 PM CDT | Special Weather Statement | SHV | Angelina | 40 min |
| May 9, 8:23 PM CDT | River Flood Warning | SHV | Anderson, Cherokee, Houston, Trinity | 35 days |
| May 9, 8:26 PM CDT | River Flood Warning | SHV | Sabine, San Augustine | 3 days |
| May 9, 11:10 PM CDT | Special Weather Statement | SHV | Nacogdoches | 50 min |
| May 10, 12:04 AM CDT | Special Weather Statement | SHV | Angelina | 41 min |
| May 10, 12:15 PM CDT | Severe Thunderstorm Warning | SHV | Camp, Franklin, Titus, Upshur, Wood | 45 min |
| May 10, 12:41 PM CDT | Severe Thunderstorm Warning | SHV | Bowie, Franklin, Morris, Red River, Titus | 49 min |
| May 10, 1:08 PM CDT | Special Weather Statement | SHV | Franklin | 37 min |
| May 10, 1:29 PM CDT | Special Weather Statement | SHV | Titus | 46 min |
| May 10, 1:44 PM CDT | Severe Thunderstorm Warning | SHV | Camp, Cass, Marion, Morris, Titus | 46 min |
| May 10, 2:25 PM CDT | Severe Thunderstorm Warning | SHV | Cass, Harrison, Marion | 65 min |
| May 10, 3:06 PM CDT | Special Weather Statement | SHV | Red River | 39 min |
| May 10, 5:20 PM CDT | Special Weather Statement | SHV | Harrison | 40 min |
| May 10, 6:29 PM CDT | Special Weather Statement | SHV | Morris, Titus | 46 min |
Nearby
Severe Thunderstorm Warnings in Texas, 2021Every 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.