Excessive Heat Warning 1, NWS Brownsville, TX

068 
WWUS74 KBRO 202329
NPWBRO

URGENT - WEATHER MESSAGE
National Weather Service Brownsville TX
629 PM CDT Sun Jun 20 2021

TXZ252-211200-
/O.CAN.KBRO.HT.Y.0004.000000T0000Z-210621T0000Z/
/O.CON.KBRO.EH.W.0001.210621T1800Z-210622T0000Z/
Starr-
Including the cities of Rio Grande City and Roma
629 PM CDT Sun Jun 20 2021

...TODAY'S HEAT ADVISORY FOR STARR COUNTY HAS BEEN CANCELLED EARLY...

...AN EXCESSIVE HEAT WARNING REMAINS IN EFFECT FROM 1 PM TO 7 PM 
CDT MONDAY...

* WHAT...Dangerously hot conditions with heat index values up to 
  121 expected.

* WHERE...Starr County.

* WHEN...From 1 PM to 7 PM CDT Monday.

* IMPACTS...Extreme heat and humidity will significantly 
  increase the potential for heat related illnesses, 
  particularly for those working or participating in outdoor 
  activities.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Drink plenty of fluids, stay in an air-conditioned room, stay out
of the sun, and check up on relatives and neighbors. Young
children and pets should never be left unattended in vehicles
under any circumstances.

Take extra precautions if you work or spend time outside. When
possible reschedule strenuous activities to early morning or
evening. Know the signs and symptoms of heat exhaustion and heat
stroke. Wear lightweight and loose fitting clothing when
possible. To reduce risk during outdoor work, the Occupational
Safety and Health Administration recommends scheduling frequent
rest breaks in shaded or air conditioned environments. Anyone
overcome by heat should be moved to a cool and shaded location.
Heat stroke is an emergency! Call 9 1 1.

&&

$$

TXZ248-253-211200-
/O.CON.KBRO.EH.W.0001.210621T1800Z-210622T0000Z/
Zapata-Southern Hidalgo-
Including the cities of Zapata, McAllen, Edinburg, Pharr, 
Mission, and Weslaco
629 PM CDT Sun Jun 20 2021

...EXCESSIVE HEAT WARNING REMAINS IN EFFECT FROM 1 PM TO 7 PM CDT
MONDAY...

* WHAT...Dangerously hot conditions with heat index values up to 
  116 expected.

* WHERE...Zapata and Southern Hidalgo Counties.

* WHEN...From 1 PM to 7 PM CDT Monday.

* IMPACTS...Extreme heat and humidity will significantly 
  increase the potential for heat related illnesses, 
  particularly for those working or participating in outdoor 
  activities.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Drink plenty of fluids, stay in an air-conditioned room, stay out
of the sun, and check up on relatives and neighbors. Young
children and pets should never be left unattended in vehicles
under any circumstances.

Take extra precautions if you work or spend time outside. When
possible reschedule strenuous activities to early morning or
evening. Know the signs and symptoms of heat exhaustion and heat
stroke. Wear lightweight and loose fitting clothing when
possible. To reduce risk during outdoor work, the Occupational
Safety and Health Administration recommends scheduling frequent
rest breaks in shaded or air conditioned environments. Anyone
overcome by heat should be moved to a cool and shaded location.
Heat stroke is an emergency! Call 9 1 1.

&&

$$

404 
WWUS74 KBRO 210908
NPWBRO

URGENT - WEATHER MESSAGE
National Weather Service Brownsville TX
408 AM CDT Mon Jun 21 2021

TXZ248-252-253-211900-
/O.CON.KBRO.EH.W.0001.210621T1800Z-210622T0000Z/
Zapata-Starr-Southern Hidalgo-
Including the cities of Zapata, Rio Grande City, Roma, McAllen, 
Edinburg, Pharr, Mission, and Weslaco
408 AM CDT Mon Jun 21 2021

...EXCESSIVE HEAT WARNING REMAINS IN EFFECT FROM 1 PM THIS
AFTERNOON TO 7 PM CDT THIS EVENING...

* WHAT...Dangerously hot conditions with heat index values between
  115 to 118 degrees expected.

* WHERE...Starr County, Zapata and Southern Hidalgo.

* WHEN...From 1 PM to 7 PM CDT Monday.

* IMPACTS...Extreme heat and humidity will significantly 
  increase the potential for heat related illnesses, 
  particularly for those working or participating in outdoor 
  activities.

* ADDITIONAL DETAILS...The most intense heat may only last 2 hours
  between 2 and 4 pm. 

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Drink plenty of fluids, stay in an air-conditioned room, stay out
of the sun, and check up on relatives and neighbors. Young
children and pets should never be left unattended in vehicles
under any circumstances.

Take extra precautions if you work or spend time outside. When
possible reschedule strenuous activities to early morning or
evening. Know the signs and symptoms of heat exhaustion and heat
stroke. Wear lightweight and loose fitting clothing when
possible. To reduce risk during outdoor work, the Occupational
Safety and Health Administration recommends scheduling frequent
rest breaks in shaded or air conditioned environments. Anyone
overcome by heat should be moved to a cool and shaded location.
Heat stroke is an emergency! Call 9 1 1.

&&

$$

TXZ249-353-211900-
/O.NEW.KBRO.HT.Y.0005.210621T1800Z-210622T0000Z/
Jim Hogg-Northern Hidalgo-
Including the cities of Hebbronville and San Manuel
408 AM CDT Mon Jun 21 2021

...HEAT ADVISORY IN EFFECT FROM 1 PM THIS AFTERNOON TO 7 PM CDT
THIS EVENING...

* WHAT...Heat index values up to 111 expected.

* WHERE...Jim Hogg and Northern Hidalgo Counties.

* WHEN...From 1 PM this afternoon to 7 PM CDT this evening.

* IMPACTS...Hot temperatures and high humidity may cause heat 
  illnesses to occur.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Drink plenty of fluids, stay in an air-conditioned room, stay out
of the sun, and check up on relatives and neighbors. Young
children and pets should never be left unattended in vehicles
under any circumstances.

Take extra precautions if you work or spend time outside. When
possible reschedule strenuous activities to early morning or
evening. Know the signs and symptoms of heat exhaustion and heat
stroke. Wear lightweight and loose fitting clothing when
possible. To reduce risk during outdoor work, the Occupational
Safety and Health Administration recommends scheduling frequent
rest breaks in shaded or air conditioned environments. Anyone
overcome by heat should be moved to a cool and shaded location.
Heat stroke is an emergency! Call 9 1 1.

&&

$$

443 
WWUS74 KBRO 211720
NPWBRO

URGENT - WEATHER MESSAGE
National Weather Service Brownsville TX
1220 PM CDT Mon Jun 21 2021

TXZ248-252-253-220000-
/O.CON.KBRO.EH.W.0001.210621T1800Z-210622T0000Z/
Zapata-Starr-Southern Hidalgo-
Including the cities of Zapata, Rio Grande City, Roma, McAllen, 
Edinburg, Pharr, Mission, and Weslaco
1220 PM CDT Mon Jun 21 2021

...EXCESSIVE HEAT WARNING REMAINS IN EFFECT FROM 1 PM THIS
AFTERNOON UNTIL 7 PM CDT THIS EVENING...

* WHAT...Dangerously hot conditions with heat index values up to
  118 expected.

* WHERE...Starr, Zapata and Southern Hidalgo Counties.

* WHEN...Until 7 PM CDT this evening.

* IMPACTS...Extreme heat and humidity will significantly increase
  the potential for heat related illnesses, particularly for those
  working or participating in outdoor activities.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Drink plenty of fluids, stay in an air-conditioned room, stay out
of the sun, and check up on relatives and neighbors. Young
children and pets should never be left unattended in vehicles
under any circumstances.

Take extra precautions if you work or spend time outside. When
possible reschedule strenuous activities to early morning or
evening. Know the signs and symptoms of heat exhaustion and heat
stroke. Wear lightweight and loose fitting clothing when
possible. To reduce risk during outdoor work, the Occupational
Safety and Health Administration recommends scheduling frequent
rest breaks in shaded or air conditioned environments. Anyone
overcome by heat should be moved to a cool and shaded location.
Heat stroke is an emergency! Call 9 1 1.

&&

$$

TXZ249-353-220000-
/O.CON.KBRO.HT.Y.0005.210621T1800Z-210622T0000Z/
Jim Hogg-Northern Hidalgo-
Including the cities of Hebbronville and San Manuel
1220 PM CDT Mon Jun 21 2021

...HEAT ADVISORY REMAINS IN EFFECT FROM 1 PM THIS AFTERNOON UNTIL
7 PM CDT THIS EVENING...

* WHAT...Heat index values up to 111 expected.

* WHERE...Jim Hogg and Northern Hidalgo Counties.

* WHEN...Until 7 PM CDT this evening.

* IMPACTS...Hot temperatures and high humidity may cause heat 
  illnesses to occur.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Drink plenty of fluids, stay in an air-conditioned room, stay out
of the sun, and check up on relatives and neighbors. Young
children and pets should never be left unattended in vehicles
under any circumstances.

Take extra precautions if you work or spend time outside. When
possible reschedule strenuous activities to early morning or
evening. Know the signs and symptoms of heat exhaustion and heat
stroke. Wear lightweight and loose fitting clothing when
possible. To reduce risk during outdoor work, the Occupational
Safety and Health Administration recommends scheduling frequent
rest breaks in shaded or air conditioned environments. Anyone
overcome by heat should be moved to a cool and shaded location.
Heat stroke is an emergency! Call 9 1 1.

&&

$$

026 
WWUS74 KBRO 220013 AAA
NPWBRO

URGENT - WEATHER MESSAGE...UPDATED
National Weather Service Brownsville TX
713 PM CDT Mon Jun 21 2021

TXZ248-252-253-220115-
/O.EXP.KBRO.EH.W.0001.000000T0000Z-210622T0000Z/
Zapata-Starr-Southern Hidalgo-
Including the cities of Zapata, Rio Grande City, Roma, McAllen, 
Edinburg, Pharr, Mission, and Weslaco
713 PM CDT Mon Jun 21 2021

...EXCESSIVE HEAT WARNING HAS EXPIRED...

Surface observations suggest that temperatures have started to
cool across Deep South Texas and the Rio Grande Valley. As a
result, the Excessive Heat Warning has been allowed to expire.

$$

TXZ249-353-220115-
/O.EXP.KBRO.HT.Y.0005.000000T0000Z-210622T0000Z/
Jim Hogg-Northern Hidalgo-
Including the cities of Hebbronville and San Manuel
713 PM CDT Mon Jun 21 2021

...HEAT ADVISORY HAS EXPIRED...

Surface observations suggest that temperatures have started to
cool across Deep South Texas and the Rio Grande Valley. As a
result, the Heat Advisory has been allowed to expire.

$$

Area Forecast Discussion
National Weather Service Brownsville TX
240 PM CDT Sun Jun 20 2021

.SHORT TERM (Now through Monday Night): Upper level moisture
courtesy of of Tropical Depression Dolores and a 500 mb trough
will continue to provide a chance of showers and thunderstorms
across central and eastern portions of deep south Texas this
evening. The 500 mb trough that is draped across east Texas will
begin to shift eastward tonight into Monday and slightly drier air
will begin to filter in. Temperatures on Monday will be hot,
especially across western portions of the CWA with highs expected
to reach 100 to 106 degrees Mon afternoon. The warm temperatures
coupled with high dewpoints will result in heat index values
reaching 111 degrees across much of the region and heat index
values above 115 degrees across western and southern portions of
the CWA. Heat Advisories are likely for all but the coastal areas
tomorrow with an Excessive Heat Warning for portions of Hidalgo,
Starr and Zapata counties in effect tomorrow as well. Monday
night, a cold front will move into central Texas, but remain well
north of the CWA. This boundary along with ample moisture still in
place and midlevel energy will allow for a chance of showers and
thunderstorms to develop. Overnight conditions tonight and Monday
will remain sultry with lows generally in the low 80s.

&&

.LONG TERM (Tuesday through Sunday): A weak cold front will push
into Central Texas by Monday night or Tuesday morning. Supported
by a pinched off mid level energy parcel, convection will develop
over the Sierra Madre Orientals Monday night, with activity over
the Upper Valley also possible. Lingering unsettled weather will
continue on Tuesday as the front retreats north and mid level
energy to the south gets absorbed. Wednesday day will see
improvement, with sea breeze conditions likely. Mid level ridging
centered over West Texas and New Mexico will build more
confidently over Texas late in the week. A mid level trough will
dig south over the Plains late in the week, setting up a
relatively brief Rex looking block over the West on Saturday and
Sunday as mid level high heights shift to the Southeast United
States. Despite this interesting mid level dance, local weather
will reflect fairly typical summer conditions, with near to
slightly warmer than normal temperatures. Best rain chances after
Tuesday will be along the coast. Heat index values will peak at
103 to 108 degrees through the end of the week, except 105 to 110
degrees on Wednesday afternoon.

&&

.MARINE:
Now through Monday Night: A relatively tight pressure gradient
along the lower Texas coast will continue to to increase winds and
seas today and tonight. Small Craft Advisories are in effect on
Laguna Madre into this evening and on the Gulf waters through
tonight with SCA/SCEC conditions expected into Monday. Monday
night, the pressure gradient begins to weaken, though SCEC
conditions will still be possible, especially on the Gulf waters.
Isolated to scattered showers and thunderstorms will also be
possible through the period.

Tuesday through Friday Night: Light to moderate southeast winds
and moderate seas will prevail through the long term. Isolated to
scattered showers and thunderstorms will be possible from time to
time. Low pressure troughing will exist initially, extending north
along the North Mexican coast. As the week evolves, however, high
pressure will become dominant, solidifying the southeast flow.

&&

.PRELIMINARY POINT TEMPS/POPS...
BAYVIEW/PORT ISABEL  81  92  81  90 /  20  20  20  60
BROWNSVILLE          82  93  82  93 /  20  20  10  60
HARLINGEN            81  95  81  93 /  20  10  20  60
MCALLEN              81  98  81  93 /  20  10  20  60
RIO GRANDE CITY      80 103  80  96 /  10  10  20  60
SOUTH PADRE ISLAND   83  86  83  87 /  20  20  10  50

&&

.BRO WATCHES/WARNINGS/ADVISORIES...
TX...Excessive Heat Warning from 1 PM to 7 PM CDT Monday for TXZ248-
     252-253.

     Heat Advisory until 7 PM CDT this evening for TXZ252.

GM...Small Craft Advisory until 10 PM CDT this evening for GMZ130-132-
     135.

     Small Craft Advisory until 7 AM CDT Monday for GMZ150-155-170-
     175.

&&

This product is also available on the web at:
HTTP://WEATHER.GOV/RGV

68-McGinnis/54-BHM/67-Mejia

Hazardous Weather Outlook...UPDATED
National Weather Service Brownsville TX
111 PM CDT Sun Jun 20 2021

TXZ248>257-351-353-211815-
Zapata-Jim Hogg-Brooks-Inland Kenedy-Starr-Southern Hidalgo-
Inland Willacy-Inland Cameron-Coastal Willacy-Coastal Cameron-
Coastal Kenedy-Northern Hidalgo-
111 PM CDT Sun Jun 20 2021

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

.DAY ONE...This Afternoon and Tonight

A Heat Advisory is in effect for Starr County from 1 pm this
afternoon to 7 pm this evening.

There is a moderate risk of rip currents at the beaches of South
Padre Island and at Boca Chica Beach today through tonight.

.DAYS TWO THROUGH SEVEN...Monday through Saturday

An Excessive Heat Watch is in effect for Zapata County, Starr
County, and the southern half of Hidalgo County from 1 PM CDT
Monday until 7 PM CDT Monday. A Heat Advisory will be needed for
the remainder of Deep South Texas and the Rio Grande Valley for
the same time period.

Additional Heat Advisories may be needed for portions of Deep
South Texas and the Rio Grande Valley on Tuesday.

An elevated risk of rip currents is possible at the local beaches
Monday through Saturday.

.SPOTTER INFORMATION STATEMENT...

Spotter activation will not be needed.

GMZ130-132-135-150-155-170-175-211815-
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-
111 PM CDT Sun Jun 20 2021

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

.DAY ONE...This Afternoon and Tonight

Small craft advisories are in effect for the Laguna Madre into
this evening and for the offshore waters of the lower Texas coast
this afternoon and overnight due to strong winds and high seas.

.DAYS TWO THROUGH SEVEN...Monday through Saturday

Small Craft Advisories may be needed for the offshore waters of
the lower Texas coast Monday due to strong winds and high seas.

.SPOTTER INFORMATION STATEMENT...

Spotter activation will not be needed.