Alert archive / Texas / Areal Flood Advisories in 2021
Areal Flood Advisory 46, NWS Austin/San Antonio, TX
NWS Austin/San Antonio, TX issued this areal flood advisory at May 16, 2021, 8:27 AM CDT for Karnes County, Texas. It was in force for 3 hr.
The area
The counties it named.
The facts
- Issued
- May 16, 2021, 8:27 AM CDT (13:27 UTC)
- Expired
- May 16, 2021, 11:30 AM CDT
- In force
- 3 hr
- Issued by
- NWS Austin/San Antonio, TX
- Area
- Storm-based polygon
County Karnes County, TX
The radar
The Austin/San Antonio radar (KEWX), 90 km from the middle of the area, began a volume at 13:28 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, 1.5 hours before the alert went out and 140 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
- 2495 J/kg
- Mixed-layer CIN
- 0 J/kg
- Mixed-layer LCL
- 504 m above ground
- 0-6 km bulk shear
- 35 kt
- 0-1 km storm-relative helicity
- 83 m²/s²
- 0-3 km storm-relative helicity
- 230 m²/s²
- Significant tornado parameter
- 2.4
- Supercell composite
- 12.7
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 May 16, 6:23 AM CDT, 2 hours 4 minutes earlier.
Area forecast discussion, May 16, 6:23 AM CDT, 2 hours 4 minutes before
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</html>Hazardous weather outlook, May 16, 3:58 AM CDT, 4 hours 29 minutes before
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<div class="status" id="status">Temporary Notice</div>
<h1 id="headline">This service is currently unavailable.</h1>
<p id="message1">
The site you requested is temporarily down for maintenance or an unexpected outage.
</p>
<p id="message2">
Please try again in a few minutes.
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If you are an administrator, restore upstream service and remove the redirect/fallback rule when normal operations resume.
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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 |
|---|---|---|---|---|
| May 15, 8:53 PM CDT | Special Weather Statement | EWX | Val Verde | 37 min |
| May 15, 9:01 PM CDT | Severe Thunderstorm Warning | EWX | Val Verde | 17 min |
| May 15, 9:22 PM CDT | Severe Thunderstorm Warning | EWX | Val Verde | 38 min |
| May 16, 5:39 AM CDT | Areal Flood Advisory | EWX | Frio, Zavala | 3 hr |
| May 16, 11:09 AM CDT | Areal Flood Advisory | EWX | Hays, Travis | 3 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.