Alert archive / Texas / Areal Flood Advisories in 2021

Areal Flood Advisory 13, NWS Brownsville, TX

May 15, 2021Hidalgo County, Texas

NWS Brownsville, TX issued this areal flood advisory at May 15, 2021, 12:23 PM CDT for Hidalgo County, Texas. It was in force for 112 min.

The area

The counties it named.

The facts

Issued: May 15, 2021, 12:23 PM CDT (17:23 UTC)
Expired: May 15, 2021, 2:15 PM CDT
In force: 112 min
Issued by: NWS Brownsville, TX
Area: Storm-based polygon

County Hidalgo County, TX

The radar

The Brownsville radar (KBRO), 93 km from the middle of the area, began a volume at 17:24 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

Brownsville Intl, TX (KBRO), launched 12:00Z, 5.4 hours before the alert went out and 96 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: 1407 J/kg
Mixed-layer CIN: -11 J/kg
Mixed-layer LCL: 634 m above ground
0-6 km bulk shear: 30 kt
0-1 km storm-relative helicity: 57 m²/s²
0-3 km storm-relative helicity: 118 m²/s²
Significant tornado parameter: 0.5
Supercell composite: 3.0

Open this sounding in Storm Lab

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 Brownsville, TX wrote its last area forecast discussion before this areal flood advisory went out at May 15, 6:49 AM CDT, 5 hours 34 minutes earlier.

Area forecast discussion, May 15, 6:49 AM CDT, 5 hours 34 minutes before

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Hazardous weather outlook, May 15, 5:00 AM CDT, 7 hours 23 minutes before

Hazardous Weather Outlook
National Weather Service Brownsville TX
500 AM CDT Sat May 15 2021

TXZ248>257-351-353-152145-
Zapata-Jim Hogg-Brooks-Inland Kenedy-Starr-Southern Hidalgo-
Inland Willacy-Inland Cameron-Coastal Willacy-Coastal Cameron-
Coastal Kenedy-Northern Hidalgo-
500 AM CDT Sat May 15 2021

This Hazardous Weather Outlook is for portions of Deep South
Texas.

.DAY ONE...Today and Tonight

Scattered thunderstorms are expected today and tonight. An isolated
strong to severe thunderstorm is possible, producing hail, strong
wind gusts, and locally heavy rainfall.

There is also a Moderate Risk of rip currents at the beaches of
South Padre Island and at Boca Chica Beach.

.DAYS TWO THROUGH SEVEN...Sunday through Friday

An elevated risk of rip currents is possible at the local beaches
through the entire period.

.SPOTTER INFORMATION STATEMENT...

Spotter activation will not be needed at this time.

GMZ130-132-135-150-155-170-175-152145-
Laguna Madre from the Port of Brownsville to the Arroyo Colorado-
Laguna Madre from the Arroyo Colorado To 5 NM north of Port
Mansfield TX-
Laguna Madre from 5 nm north of Port Mansfield to Baffin Bay TX-
Coastal waters from Port Mansfield to the Rio Grande out 20 nm-
Coastal waters from Baffin Bay to Port Mansfield out 20 nm-
Waters from Port Mansfield to the Rio Grande extending from 20 to
60 nm-
Waters from Baffin Bay to Port Mansfield extending from 20 to
60 nm-
500 AM CDT Sat May 15 2021

This Hazardous Weather Outlook is for portions of The Gulf of
Mexico and The Laguna Madre.

.DAY ONE...Today and Tonight

Small Craft Advisories may be needed across the Laguna Madre and the
lower Texas Gulf waters tonight.

.DAYS TWO THROUGH SEVEN...Sunday through Friday

Small Craft Advisories may be needed across the Gulf of Mexico Bay
and Gulf waters Sunday through Wednesday and on the Laguna Madre
Sunday through Tuesday.

.SPOTTER INFORMATION STATEMENT...

Spotter activation will not be needed.

In the hours before

Special weather statement, May 15, 10:56 AM CDT, 1 hour 27 minutes before

Special Weather Statement
National Weather Service Brownsville TX
1056 AM CDT Sat May 15 2021

TXZ253-151645-
Southern Hidalgo TX-
1056 AM CDT Sat May 15 2021

...SPECIAL WEATHER STATEMENT...

At 1056 AM CDT, Doppler radar was tracking strong thunderstorms along
a line extending from 15 miles southwest of Hidalgo to 12 miles south
of Santa Ana National Wildlife Refuge to 28 miles south of Progreso
City Offices. Movement was northeast at 20 mph.

Pea size hail and winds in excess of 30 mph will be possible with
these storms.

Locations impacted include...
Mission, Pharr, Weslaco, San Juan, Alamo, Donna, Mercedes, Hidalgo,
Progreso and Palmview.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Frequent cloud to ground lightning is occurring with these storms.
Lightning can strike 10 miles away from a thunderstorm. Seek a safe
shelter inside a building or vehicle.

These storms may intensify, so be certain to monitor local radio
stations and available television stations for additional information
and possible warnings from the National Weather Service.

&&

LAT...LON 2606 9807 2607 9808 2607 9813 2605 9815
      2607 9818 2606 9819 2607 9825 2610 9829
      2612 9827 2612 9828 2610 9830 2613 9833
      2617 9834 2615 9835 2617 9840 2626 9838
      2620 9795 2607 9786 2607 9803 2604 9808
TIME...MOT...LOC 1556Z 208DEG 16KT 2593 9842 2589 9815 2568 9801

Farris

Special weather statement, May 15, 11:25 AM CDT, 58 minutes before

Special Weather Statement
National Weather Service Brownsville TX
1125 AM CDT Sat May 15 2021

TXZ252-253-255-151715-
Southern Hidalgo TX-Inland Cameron TX-Starr TX-
1125 AM CDT Sat May 15 2021

...SIGNIFICANT WEATHER ADVISORY FOR SOUTHERN HIDALGO...SOUTHEASTERN
STARR AND WEST CENTRAL CAMERON COUNTIES UNTIL 1215 PM CDT...

At 1124 AM CDT, Doppler radar was tracking strong thunderstorms
along a line extending from 9 miles south of Los Ebanos to J.C.
Kelly Elementary School to 11 miles south of Santa Maria. Movement
was north at 20 mph.

Nickel size hail and winds in excess of 40 mph will be possible with
these storms.

Locations impacted include...
Edinburg, Mission, Pharr, Harlingen, Weslaco, San Juan, Alamo, Donna,
Mercedes and Hidalgo.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Frequent cloud to ground lightning is occurring with these storms.
Lightning can strike 10 miles away from a thunderstorm. Seek a safe
shelter inside a building or vehicle.

These storms may intensify, so be certain to monitor local radio
stations and available television stations for additional information
and possible warnings from the National Weather Service.

&&

LAT...LON 2607 9786 2607 9803 2604 9807 2605 9807
      2606 9820 2612 9830 2610 9830 2617 9834
      2616 9839 2623 9845 2620 9848 2626 9859
      2624 9867 2627 9870 2646 9874 2645 9815
      2620 9774 2604 9777
TIME...MOT...LOC 1624Z 180DEG 18KT 2610 9859 2611 9819 2592 9788

Farris

Special weather statement, May 15, 12:14 PM CDT, 9 minutes before

Special Weather Statement
National Weather Service Brownsville TX
1214 PM CDT Sat May 15 2021

TXZ252-253-353-151800-
Southern Hidalgo TX-Northern Hidalgo TX-Starr TX-
1214 PM CDT Sat May 15 2021

...SIGNIFICANT WEATHER ADVISORY FOR SOUTHWESTERN HIDALGO AND
SOUTHEASTERN STARR COUNTIES UNTIL 100 PM CDT...

At 1214 PM CDT, Doppler radar was tracking strong thunderstorms along
a line extending from near Garciasville to near Madero. Movement was
north at 15 mph.

Nickel size hail and winds in excess of 40 mph will be possible with
these storms.

Locations impacted include...
Edinburg, Mission, Palmview, Penitas, Sullivan City, La Joya,
Palmhurst, Garciasville, North McAllen and Los Ebanos.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Frequent cloud to ground lightning is occurring with these storms.
Lightning can strike 10 miles away from a thunderstorm. Seek a safe
shelter inside a building or vehicle.

These storms may intensify, so be certain to monitor local radio
stations and available television stations for additional information
and possible warnings from the National Weather Service.

&&

LAT...LON 2612 9827 2610 9830 2617 9834 2616 9839
      2623 9845 2620 9848 2625 9856 2622 9856
      2626 9859 2624 9867 2627 9872 2629 9871
      2630 9875 2633 9875 2633 9878 2637 9881
      2658 9877 2656 9841 2644 9803 2610 9827
TIME...MOT...LOC 1714Z 201DEG 12KT 2627 9874 2615 9835

Farris

The office that day

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

Issued	Product	Office	Counties	Lasted
May 15, 10:56 AM CDT	Special Weather Statement	BRO	Hidalgo	49 min
May 15, 11:25 AM CDT	Special Weather Statement	BRO	Hidalgo	50 min
May 15, 11:39 AM CDT	Areal Flood Advisory	BRO	Hidalgo	51 min
May 15, 12:14 PM CDT	Special Weather Statement	BRO	Hidalgo, Starr	46 min
May 15, 12:22 PM CDT	Tornado Warning	BRO	Hidalgo	8 min
May 15, 12:28 PM CDT	Tornado Warning	BRO	Hidalgo	17 min
May 15, 12:41 PM CDT	Severe Thunderstorm Warning	BRO	Cameron, Hidalgo	49 min
May 15, 12:48 PM CDT	Areal Flood Advisory	BRO	Hidalgo, Starr	75 min
May 15, 1:02 PM CDT	Severe Thunderstorm Warning	BRO	Cameron, Hidalgo, Willacy	28 min
May 15, 1:12 PM CDT	Flash Flood Warning	BRO	Hidalgo	49 min
May 15, 1:26 PM CDT	Severe Thunderstorm Warning	BRO	Cameron, Hidalgo, Willacy	28 min
May 15, 1:30 PM CDT	Tornado Warning	BRO	Hidalgo, Willacy	15 min
May 15, 1:53 PM CDT	Areal Flood Advisory	BRO	Cameron, Hidalgo, Willacy	52 min
May 15, 2:01 PM CDT	Special Weather Statement	BRO	Cameron, Willacy	29 min
May 15, 2:23 PM CDT	Special Marine Warning	BRO		97 min
May 15, 2:29 PM CDT	Special Weather Statement	BRO	Cameron	46 min
May 15, 2:37 PM CDT	Areal Flood Advisory	BRO	Cameron, Hidalgo, Willacy	53 min
May 15, 3:15 PM CDT	Special Weather Statement	BRO	Cameron	30 min
May 15, 3:22 PM CDT	Special Weather Statement	BRO	Cameron	38 min
May 15, 3:25 PM CDT	Areal Flood Advisory	BRO	Cameron, Willacy	65 min
May 15, 5:20 PM CDT	Special Marine Warning	BRO		25 min

Nearby

Areal Flood Advisories in Texas, 2021 Every 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.