Alert archive / Texas / Flash Flood Watches in 2020

Flash Flood Watch 3, NWS Fort Worth, TX

May 16, 202023 counties in Texas

NWS Fort Worth, TX issued this flash flood watch at May 16, 2020, 10:39 AM CDT for 23 counties in Texas. It was in force for 14 hr.

The area

The counties it named.

The facts

Issued: May 16, 2020, 10:39 AM CDT (15:39 UTC)
Expired: May 17, 2020, 1:00 AM CDT
In force: 14 hr
Issued by: NWS Fort Worth, TX
Flood severity: None

All 23 counties

Anderson County, TX, Collin County, TX, Cooke County, TX, Dallas County, TX, Delta County, TX, Denton County, TX, Ellis County, TX, Fannin County, TX, Freestone County, TX, Grayson County, TX, Henderson County, TX, Hill County, TX, Hopkins County, TX, Hunt County, TX, Johnson County, TX, Kaufman County, TX, Lamar County, TX, Limestone County, TX, Navarro County, TX, Rains County, TX, Rockwall County, TX, Tarrant County, TX, Van Zandt County, TX

The radar

The Dallas/Ft Worth radar (KFWS), 88 km from the middle of the area, began a volume at 15:42 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 12:00Z, 3.7 hours before the alert went out and 85 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: 15 J/kg
Mixed-layer CIN: -163 J/kg
Mixed-layer LCL: 760 m above ground
0-6 km bulk shear: 29 kt
0-1 km storm-relative helicity: 178 m²/s²
0-3 km storm-relative helicity: 189 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.0

Open this sounding in Storm Lab

What forecasters said that day

The local office's own words before this flash flood watch went out, as it sent them, from the Iowa Environmental Mesonet's archive of National Weather Service text.

NWS Fort Worth, TX wrote its last area forecast discussion before this flash flood watch went out at May 16, 5:02 AM CDT, 5 hours 37 minutes earlier.

Area forecast discussion, May 16, 5:02 AM CDT, 5 hours 37 minutes before

<!doctype html>
<html lang="en">
<head>
  <meta charset="utf-8">
  <meta name="viewport" content="width=device-width, initial-scale=1">
  <title>Service Notice</title>
  <link rel="stylesheet" href="index.css">
</head>
<body>
  <main class="wrap">
    <section class="card" role="status" aria-live="polite">
      <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.
      </p>
      <p class="small" id="detail">
        If you are an administrator, restore upstream service and remove the redirect/fallback rule when normal operations resume.
      </p>
    </section>
  </main>
  <script src="index.js"></script>
</body>
</html>

Hazardous weather outlook, May 16, 5:05 AM CDT, 5 hours 34 minutes before

<!doctype html>
<html lang="en">
<head>
  <meta charset="utf-8">
  <meta name="viewport" content="width=device-width, initial-scale=1">
  <title>Service Notice</title>
  <link rel="stylesheet" href="index.css">
</head>
<body>
  <main class="wrap">
    <section class="card" role="status" aria-live="polite">
      <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.
      </p>
      <p class="small" id="detail">
        If you are an administrator, restore upstream service and remove the redirect/fallback rule when normal operations resume.
      </p>
    </section>
  </main>
  <script src="index.js"></script>
</body>
</html>

The office that day

Everything else NWS Fort Worth, TX issued on the same UTC day.

Issued	Product	Office	Counties	Lasted
May 15, 7:28 PM CDT	Special Weather Statement	FWD	Rockwall	32 min
May 15, 7:46 PM CDT	Special Weather Statement	FWD	Denton	29 min
May 15, 7:55 PM CDT	Special Weather Statement	FWD	Ellis, Johnson, Palo Pinto, Parker, Tarrant	65 min
May 15, 8:09 PM CDT	Severe Thunderstorm Warning	FWD	Stephens, Young	66 min
May 15, 8:40 PM CDT	Special Weather Statement	FWD	Eastland	50 min
May 15, 8:57 PM CDT	Special Weather Statement	FWD	Hill, Hood, Johnson, Navarro, Somervell	63 min
May 15, 9:12 PM CDT	Severe Thunderstorm Warning	FWD	Eastland, Jack, Palo Pinto, Stephens, Young	48 min
May 15, 9:42 PM CDT	Special Weather Statement	FWD	Comanche, Mills	48 min
May 15, 9:49 PM CDT	Areal Flood Advisory	FWD	Eastland, Jack, Palo Pinto, Stephens, Young	3 hr
May 15, 9:49 PM CDT	Severe Thunderstorm Warning	FWD	Comanche, Eastland, Erath	56 min
May 15, 9:57 PM CDT	Severe Thunderstorm Warning	FWD	Jack, Palo Pinto, Parker, Wise	63 min
May 15, 10:28 PM CDT	Severe Thunderstorm Warning	FWD	Erath, Hood, Parker, Somervell	62 min
May 15, 10:36 PM CDT	Areal Flood Advisory	FWD	Erath, Hood, Palo Pinto, Parker	3 hr
May 15, 10:39 PM CDT	Special Weather Statement	FWD	Hamilton, Lampasas	66 min
May 15, 11:10 PM CDT	Severe Thunderstorm Warning	FWD	Bosque, Coryell, Hamilton, McLennan	80 min
May 15, 11:25 PM CDT	Special Weather Statement	FWD	Johnson	35 min
May 15, 11:27 PM CDT	Areal Flood Advisory	FWD	Bosque, Hill, Hood, Johnson, Somervell	3 hr
May 16, 12:25 AM CDT	Special Weather Statement	FWD	Hill, McLennan	50 min
May 16, 12:45 AM CDT	Areal Flood Advisory	FWD	McLennan	3 hr
May 16, 12:56 AM CDT	Special Weather Statement	FWD	Falls, Milam	49 min
May 16, 1:21 AM CDT	Special Weather Statement	FWD	McLennan	24 min
May 16, 1:43 AM CDT	River Flood Warning	FWD	Hunt	57 hr
May 16, 1:43 AM CDT	River Flood Warning	FWD	Hunt, Kaufman, Rockwall	47 hr
May 16, 1:50 AM CDT	Special Weather Statement	FWD	Milam, Robertson	25 min
May 16, 9:51 AM CDT	Areal Flood Advisory	FWD	Tarrant	3 hr
May 16, 11:01 AM CDT	Flash Flood Warning	FWD	Tarrant	5 hr
May 16, 11:36 AM CDT	Areal Flood Advisory	FWD	Denton	3 hr
May 16, 12:06 PM CDT	Areal Flood Advisory	FWD	Freestone, Leon, Limestone, Robertson	3 hr
May 16, 12:17 PM CDT	River Flood Warning	FWD	Denton	22 hr
May 16, 12:17 PM CDT	River Flood Warning	FWD	Dallas	52 hr
May 16, 12:28 PM CDT	Areal Flood Advisory	FWD	Dallas, Ellis, Tarrant	3 hr
May 16, 1:51 PM CDT	Areal Flood Advisory	FWD	Dallas, Kaufman, Rockwall	5 hr
May 16, 2:19 PM CDT	Special Weather Statement	FWD	Van Zandt	26 min
May 16, 2:26 PM CDT	Areal Flood Advisory	FWD	Cooke, Denton	3 hr
May 16, 2:28 PM CDT	River Flood Warning	FWD	Leon, Robertson	4 days
May 16, 2:34 PM CDT	River Flood Warning	FWD	Dallas	5 hr
May 16, 2:39 PM CDT	Special Weather Statement	FWD	Ellis	36 min
May 16, 2:52 PM CDT	Areal Flood Advisory	FWD	Ellis, Navarro	5 hr
May 16, 2:57 PM CDT	Special Weather Statement	FWD	Rains	33 min
May 16, 3:14 PM CDT	Special Weather Statement	FWD	Kaufman	46 min
May 16, 3:25 PM CDT	Areal Flood Advisory	FWD	Dallas, Tarrant	3 hr
May 16, 3:46 PM CDT	Special Weather Statement	FWD	Rockwall	29 min
May 16, 3:57 PM CDT	Areal Flood Warning	FWD	Tarrant	4 hr
May 16, 4:11 PM CDT	Special Weather Statement	FWD	Rains	34 min
May 16, 4:14 PM CDT	Special Weather Statement	FWD	Kaufman	31 min
May 16, 5:01 PM CDT	Areal Flood Advisory	FWD	Hunt, Rains, Van Zandt	3 hr
May 16, 5:35 PM CDT	Special Weather Statement	FWD	Kaufman	25 min
May 16, 6:25 PM CDT	Areal Flood Advisory	FWD	Kaufman, Rockwall	118 min
May 16, 6:54 PM CDT	Flash Flood Warning	FWD	Rains	2 hr

Nearby

Flash Flood Watches in Texas, 2020 Every flash flood watch in 2020

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.