Alert archive / Texas / Flash Flood Warnings in 2021

Flash Flood Warning 13, NWS Fort Worth, TX

June 5, 2021Dallas County, Texas

NWS Fort Worth, TX issued this flash flood warning at Jun 5, 2021, 11:29 PM CDT for Dallas County, Texas. It was in force for 3 hr. No storm report in the archive falls inside the area while it was in force.

The area

The outline as issued.

The facts

Issued: Jun 5, 2021, 11:29 PM CDT (04:29 UTC)
Expired: Jun 6, 2021, 2:30 AM CDT
In force: 3 hr
Issued by: NWS Fort Worth, TX
Area: Storm-based polygon
Flood severity: None

County Dallas County, TX

The radar

The Dallas/Ft Worth radar (KFWS), 63 km from the middle of the area, began a volume at 04:32 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, 4.5 hours before the alert went out and 51 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: 941 J/kg
Mixed-layer CIN: -24 J/kg
Mixed-layer LCL: 1368 m above ground
0-6 km bulk shear: 8 kt
0-1 km storm-relative helicity: 17 m²/s²
0-3 km storm-relative helicity: -2 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.0

Open this sounding in Storm Lab

The text

As transmitted.

651 
WGUS54 KFWD 060429
FFWFWD
TXC113-060730-
/O.NEW.KFWD.FF.W.0013.210606T0429Z-210606T0730Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/

BULLETIN - EAS ACTIVATION REQUESTED
Flash Flood Warning
National Weather Service Fort Worth TX
1129 PM CDT Sat Jun 5 2021

The National Weather Service in Fort Worth has issued a

* Flash Flood Warning for...
  Northern Dallas County in north central Texas...

* Until 230 AM CDT.

* At 1129 PM CDT, Doppler radar and automated rain gauges indicated 
  slow moving thunderstorms producing very heavy rain across 
  Northern Dallas County including White Rock Lake. Between 2 and 4 
  inches of rain have fallen. Additional rainfall amounts of 1 to 3 
  inches are possible. Flash flooding is ongoing or expected to 
  begin shortly.

  HAZARD...Flash flooding caused by thunderstorms.

  SOURCE...Radar and automated gauges.

  IMPACT...Flooding of small creeks and streams, urban areas,
           highways, streets, and underpasses as well as other
           poor drainage and low lying areas.

* Some locations that will experience flash flooding include...
  Dallas, Garland, Irving, Coppell, Farmers Branch, University Park, 
  Sachse, Addison and Buckingham.  Interstate 635, the Dallas North 
  Tollway, Interstate 35E, and Highway 75 may all experience urban 
  flooding.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Be aware of your surroundings and do not drive on flooded roads.

Be especially cautious at night when it is harder to recognize the 
dangers of flooding.

&&

LAT...LON 3298 9661 3280 9661 3280 9673 3285 9676
      3286 9696 3299 9694

FLASH FLOOD...RADAR AND GAUGE INDICATED

$$

Dunn

The office that day

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

Issued	Product	Office	Counties	Lasted
Jun 5, 7:19 PM CDT	Special Weather Statement	FWD	Henderson	26 min
Jun 5, 7:53 PM CDT	River Flood Warning	FWD	Hunt	4 days
Jun 5, 7:53 PM CDT	River Flood Warning	FWD	Hunt, Kaufman, Rockwall	60 hr
Jun 5, 8:37 PM CDT	Areal Flood Advisory	FWD	Collin	83 min
Jun 5, 9:25 PM CDT	Flash Flood Warning	FWD	Collin	4 hr
Jun 5, 11:44 PM CDT	River Flood Warning	FWD	Dallas	9 hr
Jun 6, 12:19 AM CDT	River Flood Warning	FWD	Collin	28 hr
Jun 6, 12:20 AM CDT	River Flood Warning	FWD	Collin	31 hr
Jun 6, 12:33 AM CDT	River Flood Warning	FWD	Dallas	15 hr
Jun 6, 2:58 AM CDT	Areal Flood Warning	FWD	Collin, Dallas	6 hr
Jun 6, 2:19 PM CDT	Flash Flood Watch	FWD	Anderson, Collin, Cooke, Dallas, Delta, Denton and 23 more	26 hr

Nearby

Flash Flood Warnings in Texas, 2021 Every flash flood 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; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.