Alert archive / Texas / Areal Flood Advisories in 2021
Areal Flood Advisory 174, NWS Austin/San Antonio, TX
NWS Austin/San Antonio, TX issued this areal flood advisory at Jul 6, 2021, 10:34 AM CDT for Gillespie County, Texas. It was in force for 3 hr.
The area
The counties it named.
The facts
- Issued
- Jul 6, 2021, 10:34 AM CDT (15:34 UTC)
- Expired
- Jul 6, 2021, 1:45 PM CDT
- In force
- 3 hr
- Issued by
- NWS Austin/San Antonio, TX
- Area
- Storm-based polygon
County Gillespie County, TX
The radar
The Austin/San Antonio radar (KEWX), 112 km from the middle of the area, began a volume at 15:37 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
Corpus Christi, TX (KCRP), launched 12:00Z, 3.6 hours before the alert went out and 327 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
- 1612 J/kg
- Mixed-layer CIN
- -7 J/kg
- Mixed-layer LCL
- 771 m above ground
- 0-6 km bulk shear
- 3 kt
- 0-1 km storm-relative helicity
- -19 m²/s²
- 0-3 km storm-relative helicity
- 16 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
What forecasters said that day
The local office's own words before this areal flood advisory went out, as it sent them, from the Iowa Environmental Mesonet's archive of National Weather Service text.
NWS Austin/San Antonio, TX wrote its last area forecast discussion before this areal flood advisory went out at Jul 5, 6:30 PM CDT, 16 hours 4 minutes earlier.
Area forecast discussion, Jul 5, 6:30 PM CDT, 16 hours 4 minutes before
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</html>The office that day
Everything else NWS Austin/San Antonio, TX issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jul 5, 7:01 PM CDT | Areal Flood Advisory | EWX | Bandera, Kerr | 3 hr |
| Jul 6, 4:43 AM CDT | Areal Flood Advisory | EWX | Blanco, Comal, Kendall | 3 hr |
| Jul 6, 6:06 AM CDT | Areal Flood Advisory | EWX | Bexar, Medina | 3 hr |
| Jul 6, 6:39 AM CDT | Flash Flood Warning | EWX | Bexar | 5 hr |
| Jul 6, 6:47 AM CDT | Areal Flood Advisory | EWX | Atascosa | 3 hr |
| Jul 6, 10:15 AM CDT | River Flood Warning | EWX | Bexar | 22 hr |
| Jul 6, 2:47 PM CDT | River Flood Warning | EWX | Bexar | 20 hr |
| Jul 6, 4:56 PM CDT | River Flood Warning | EWX | Karnes, Wilson | 62 hr |
| Jul 6, 4:57 PM CDT | River Flood Warning | EWX | Bexar, Wilson | 42 hr |
Nearby
Areal Flood Advisories in Texas, 2021Every areal flood 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.