Alert archive / Texas / Lake Wind Advisories in 2021
Lake Wind Advisory 19, NWS Shreveport, LA
NWS Shreveport, LA issued this lake wind advisory at May 8, 2021, 1:38 AM CDT for 21 counties in Texas; Caddo Parish, De Soto Parish, Sabine Parish, Louisiana; Miller County, Arkansas. It took effect at May 8, 2021, 11:00 AM CDT. It was in force for 20 hr.
The area
The counties it named.
The facts
- Issued
- May 8, 2021, 1:38 AM CDT (06:38 UTC)
- In effect from
- May 8, 2021, 11:00 AM CDT
- Expired
- May 9, 2021, 7:00 AM CDT
- In force
- 20 hr
- Issued by
- NWS Shreveport, LA
All 25 counties
Miller County, AR, Caddo Parish, LA, De Soto Parish, LA, Sabine Parish, LA, Angelina County, TX, Bowie County, TX, Camp County, TX, Cass County, TX, Cherokee County, TX, Franklin County, TX, Gregg County, TX, Harrison County, TX, Marion County, TX, Morris County, TX, Nacogdoches County, TX, Panola County, TX, Red River County, TX, Rusk County, TX, Sabine County, TX, San Augustine County, TX, Shelby County, TX, Smith County, TX, Titus County, TX, Upshur County, TX, Wood County, TX
The radar
The Shreveport radar (KSHV), 66 km from the middle of the area, began a volume at 06:36 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
Fort Worth, TX (KFWD), launched 00:00Z, 6.6 hours before the alert went out and 261 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
- 4 J/kg
- Mixed-layer CIN
- -319 J/kg
- Mixed-layer LCL
- 1986 m above ground
- 0-6 km bulk shear
- 34 kt
- 0-1 km storm-relative helicity
- 48 m²/s²
- 0-3 km storm-relative helicity
- 235 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- -0.1
What forecasters said that day
The local office's own words before this lake wind advisory went out, as it sent them, from the Iowa Environmental Mesonet's archive of National Weather Service text.
NWS Shreveport, LA wrote its last area forecast discussion before this lake wind advisory went out at May 8, 12:09 AM CDT, 1 hour 29 minutes earlier.
Area forecast discussion, May 8, 12:09 AM CDT, 1 hour 29 minutes before
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Lake Wind Advisories in Texas, 2021Lake Wind Advisories in Louisiana, 2021Lake Wind Advisories in Arkansas, 2021Every lake wind advisory 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.