Continued excessive heat occurred during most of July. The first stretch reaching warning criteria was on the 12th through the 14th, with most other days reaching Heat Advisory Levels.
Every event with a place to put it; 24 filed by county or forecast zone are drawn at its center, in a lighter ring. Tap one for its entry below.
Deaths and injuries are direct and indirect together, as the offices filed them. Damage is property and crops in the dollars of the year, not adjusted for inflation, and only where an office estimated it.
The episode as NWS HGX wrote it up.
Continued excessive heat occurred during most of July. The first stretch reaching warning criteria was on the 12th through the 14th, with most other days reaching Heat Advisory Levels. Excessive Heat Warnings are issued for maximum heat index values of 113F or above or maximum temperatures of 105 or above.
The local office's own words before the first event, as it sent them, from the Iowa Environmental Mesonet's archive of National Weather Service text.
NWS Houston/Galveston, TX wrote its last area forecast discussion before the first event at Jul 12, 2:49 AM CST, 3 minutes earlier.
Area Forecast Discussion
National Weather Service Houston/Galveston TX
349 AM CDT Wed Jul 12 2023
...New SHORT TERM, LONG TERM, MARINE...
.SHORT TERM...
(Today through Thursday Night)
Issued at 325 AM CDT Wed Jul 12 2023
Mid to upper level ridge situated over New Mexico and Western
Texas will continue to dominate the weather pattern over
Southeast Texas. Rain chances will remain limited as subsidence
persists and temperatures will remain very hot. The high
temperatures for today will be in the upper 90s to low 100s inland
and in the low to mid 90s along the coasts. Heat indices this
afternoon will peak at 109 to 112 degrees F for much of Southeast
Texas, however, there are several locations along the central
regions of Southeast Texas that may experience heat indices of 113
to 115 degrees F. For that reason, some of our central counties
were upgraded to an Excessive Heat Warning while the rest of
Southeast Texas remains under a Heat Advisory. Warm and muggy
conditions expected tonight into Thursday morning with lows in the
upper 70s to low 80s. Although Thursday's high temperatures will
be similar to today's...slightly drier air is expected and may
allow for heat indices to stay below Excessive Heat Warning
criteria. Thus, a Heat Advisory is in place for all of Southeast
Texas for Thursday.
These are dangerous heat conditions, thus, please continue to
practice heat safety. Make the appropriate adjustments if you plan
to work or spend time outdoors. Remember to hydrate often, wear
loose fitting and light clothing, stay in the shade or cool off in
an air conditioned building, and wear sunscreen. Never leave
children or pets unattended in vehicles. If the ground is too hot
for your hands, then it is too hot for their paws.
Know the signs and symptoms of heat exhaustion and heat stroke.
Check with your local authorities regarding the potential opening
of any cooling centers in your area.
24
&&
.LONG TERM...
(Friday through Tuesday)
Issued at 325 AM CDT Wed Jul 12 2023
Southeast Texas will continue under the influence of high pressure
along the mid to upper levels. Unfortunately, it means that the
scorching heat will continue for us. From Friday through
Tuesday, the high temperatures will remain in the upper 90s to low
100s range inland and in the low to mid 90s along the coasts. Heat
indices of 106 to 112 degrees F can be expected each day, which
means that Heat Advisories could be in effect through at least
the end of the forecast period. Expect warm and humid conditions
at night with low temperatures in the upper 70s to low 80s.
Little to no rainfall is expected for the next several days.
There might be a chance for isolated showers and thunderstorms on
Sunday into Monday as a few weak upper level shortwaves move
across the region. We will have to see if it will be enough to
surpass the mid level subsidence. For now, continued with PoPs of
15-20% mainly for areas east of I-45 and locations near Galveston
Bay.
With the dangerous heat conditions persisting, please continue to
practice heat safety.
24
&&
.AVIATION...
(06Z TAF Issuance)
Issued at 1123 PM CDT Tue Jul 11 2023
Similar to the last couple of days, some late night through early morning
MVFR ceilings and possible fog, otherwise VFR with mainly SSE to SSW
Winds generally in a 7-14 knot range and occasionally gusty. 42
&&
.MARINE...
Issued at 325 AM CDT Wed Jul 12 2023
The summertime pattern will continue through much of the forecast
period with winds increasing to 10-15 knots at night and relaxing
to 5-10 knots during the afternoons. Seas will be at 2 to 4 feet.
Slight rain chances are possible Sunday into early next week.
24
&&
.PRELIMINARY POINT TEMPS/POPS...
College Station (CLL) 102 79 102 78 / 0 0 0 0
Houston (IAH) 100 80 100 80 / 10 0 0 0
Galveston (GLS) 92 83 92 82 / 10 0 10 0
&&
.HGX WATCHES/WARNINGS/ADVISORIES...
TX...Heat Advisory until 10 PM CDT Thursday for TXZ163-164-176>179-
195>199-335>337-436>439.
Excessive Heat Warning until 7 PM CDT this evening for TXZ200-
210>214-226-227-235>238-300-313-338.
Heat Advisory from 7 PM this evening to 10 PM CDT Thursday for
TXZ200-210>214-226-227-235>238-300-313-338.
GM...None.
&&
SHORT TERM...24
LONG TERM....24
AVIATION...42
MARINE...24The national radar mosaic for the moment the first event began.
24 excessive heat. Local standard time, as filed.
Period of extremely hot weather, within a long period of at least Heat Advisory conditions. In StormData periods of conditions reaching Excessive Heat Warning levels are recorded.
Period of extremely hot weather, within a long period of at least Heat Advisory conditions. In StormData periods of conditions reaching Excessive Heat Warning levels are recorded.
Period of extremely hot weather, within a long period of at least Heat Advisory conditions. In StormData periods of conditions reaching Excessive Heat Warning levels are recorded.
Period of extremely hot weather, within a long period of at least Heat Advisory conditions. In StormData periods of conditions reaching Excessive Heat Warning levels are recorded.
Period of extremely hot weather, within a long period of at least Heat Advisory conditions. In StormData periods of conditions reaching Excessive Heat Warning levels are recorded.
Period of extremely hot weather, within a long period of at least Heat Advisory conditions. In StormData periods of conditions reaching Excessive Heat Warning levels are recorded.
Period of extremely hot weather, within a long period of at least Heat Advisory conditions. In StormData periods of conditions reaching Excessive Heat Warning levels are recorded.
Period of extremely hot weather, within a long period of at least Heat Advisory conditions. In StormData periods of conditions reaching Excessive Heat Warning levels are recorded.
Period of extremely hot weather, within a long period of at least Heat Advisory conditions. In StormData periods of conditions reaching Excessive Heat Warning levels are recorded.
Period of extremely hot weather, within a long period of at least Heat Advisory conditions. In StormData periods of conditions reaching Excessive Heat Warning levels are recorded.
Period of extremely hot weather, within a long period of at least Heat Advisory conditions. In StormData periods of conditions reaching Excessive Heat Warning levels are recorded.
Period of extremely hot weather, within a long period of at least Heat Advisory conditions. In StormData periods of conditions reaching Excessive Heat Warning levels are recorded.
Period of extremely hot weather, within a long period of at least Heat Advisory conditions. In StormData periods of conditions reaching Excessive Heat Warning levels are recorded.
Period of extremely hot weather, within a long period of at least Heat Advisory conditions. In StormData periods of conditions reaching Excessive Heat Warning levels are recorded.
Period of extremely hot weather, within a long period of at least Heat Advisory conditions. In StormData periods of conditions reaching Excessive Heat Warning levels are recorded.
Period of extremely hot weather, within a long period of at least Heat Advisory conditions. In StormData periods of conditions reaching Excessive Heat Warning levels are recorded.
Period of extremely hot weather, within a long period of at least Heat Advisory conditions. In StormData periods of conditions reaching Excessive Heat Warning levels are recorded.
Period of extremely hot weather, within a long period of at least Heat Advisory conditions. In StormData periods of conditions reaching Excessive Heat Warning levels are recorded.
Period of extremely hot weather, within a long period of at least Heat Advisory conditions. In StormData periods of conditions reaching Excessive Heat Warning levels are recorded.
Period of extremely hot weather, within a long period of at least Heat Advisory conditions. In StormData periods of conditions reaching Excessive Heat Warning levels are recorded.
Period of extremely hot weather, within a long period of at least Heat Advisory conditions. In StormData periods of conditions reaching Excessive Heat Warning levels are recorded.
Period of extremely hot weather, within a long period of at least Heat Advisory conditions. In StormData periods of conditions reaching Excessive Heat Warning levels are recorded.
Period of extremely hot weather, within a long period of at least Heat Advisory conditions. In StormData periods of conditions reaching Excessive Heat Warning levels are recorded.
Period of extremely hot weather, within a long period of at least Heat Advisory conditions. In StormData periods of conditions reaching Excessive Heat Warning levels are recorded.
After NWS Directive 10-1605, the rules offices file Storm Data by.
Every storm in Texas in 2023Every state in 2023This day in weather historyWarnings in Texas, July 2023
NOAA National Centers for Environmental Information, Storm Events Database, compiled from the National Weather Service’s monthly Storm Data. Complete through 2026-06; NCEI adds each month about 75 days after it ends and revises past years a few times a year. Rebuilt 2026-09-24. Each event’s entry at NCEI: 1127164, 1127165, 1127166, 1127167, 1127168, 1127169, 1127170, 1127171, 1127172, 1127173, 1127174, 1127175, 1127176, 1127177, 1127178, 1127179, 1127180, 1127181, 1127182, 1127183, 1127184, 1127185, 1127186, 1127187.