Heat, Marion
- When
- July 19, 9:00 AM CST to July 22, 6:00 PM CST
- Where
- Marion forecast zone
- Reported by
- ASOS
- Coordinates
- 32.798, -94.357 (the zone’s center; the record gives no point)
Heat in Texas, July 19 to 22, 2017
An upper level ridge of high pressure built in across portions of the Southern Plains and Lower Mississippi Valley between July 19th-22nd, resulting in high temperatures each day climbing into the mid 90s across East Texas. When combined with the high humidity, heat indices ranged from 105-108 degrees each day.
Where it happened
Every event with a place to put it; 9 filed by county or forecast zone are drawn at its center, in a lighter ring. Tap one for its entry below.
- Tornadoes
- Tropical storms and surge
- Floods
- Wind
- Hail
- Winter weather
- Heat and drought
- Cold
- Fire, smoke and dust
- Marine and coastal
- Other
The toll
- Deaths
- 0
- Injuries
- 0
- Property damage
- None recorded
- Crop damage
- None recorded
- Events
- 9
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.
What happened
The episode as NWS SHV wrote it up.
An upper level ridge of high pressure built in across portions of the Southern Plains and Lower Mississippi Valley between July 19th-22nd, resulting in high temperatures each day climbing into the mid 90s across East Texas. When combined with the high humidity, heat indices ranged from 105-108 degrees each day.
What forecasters said that day
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 Shreveport, LA wrote its last area forecast discussion before the first event at Jul 19, 8:19 AM CST, 41 minutes earlier.
Area forecast discussion, Jul 19, 8:19 AM CST, 41 minutes before
Area Forecast Discussion
National Weather Service Shreveport LA
919 AM CDT Wed Jul 19 2017
.DISCUSSION...
Persistence forecast typical for mid July to continue through the
remainder of this work week.
A broad ridge remains centered over OK this Wednesday morning with
little movement expected through Friday. By this weekend, a weak
short wave trough retrogrades west across the Gulf Coast with
increasing rain chances for the weekend.
In the meantime, expect the above described ridge to reduce
convective coverage to just across the southern half of the ArkLaTex
region with only widely SCT areal coverage at best.
Finally, expect heat indices to reach upwards of 108 degrees this
afternoon across the southern half of the ArkLaTex. Curiosly enough,
we have not recorded a triple digit high temperature yet this summer
across any of the Shreveport county warning area of E TX, SE OK, SW
AR, and N LA. For this trend to continue, we must receive timely and
near normal rainfall for the remainder of this July and throughout
August. /VIII/.
&&
.PREV DISCUSSION... /issued 717 AM CDT Wed Jul 19 2017/
AVIATION...
For the ArkLaTex, just a little light mist at KMLU with VFR to be
the case most of the day for our terminals. Light and variable
winds extend up to 10kft, then all E/NE 20-40KT.Isold p.m. TS will
be amended for and thinking KSHV/KGGG are still good candidates
looking at rapid refresh model and maybe KTXK too. Hot and dry for
most and more tomorrow, but upper high weakens this weekend and
an upper low drifts W along Gulf coast, which will make for more
coverage for many sites into early next week. /24/
PREV DISCUSSION... /issued 233 AM CDT Wed Jul 19 2017/
DISCUSSION...
Upper-ridge across the southern plains to maintain hot and mainly
dry conditions across the ArkLaTex through the remainder of the
week and early into the weekend. Temperatures this afternoon
forecast to climb into the mid to upper 90s across the region.
With dewpoint values forecast to linger in the mid 70s across
north Louisiana and portions of southern Arkansas and deep East
Texas this afternoon, heat index values are forecast to climb to
around 106 degrees. A similar pattern is expected through Thursday
prompting a heat advisory for both days. With similar conditions
expected through early in the weekend, heat advisory could be
extended as needed. Afternoon showers and thunderstorms will
remain isolated to widely scattered through Saturday with best
coverage mainly along and south of interstate 20.
Rain chances to increase on Sunday as an upper-low shifts west
across the northern gulf coast from the Florida panhandle. Could
see likely pops across north Louisiana and portions of deep east
Texas with chance pops across the remainder of the region.
Increased instability and cloud cover will keep temperatures in
the lower to mid 90s on Sunday.
A weak frontal boundary to the north along with lingering trough
in the wake of dissipating upper-low to maintain scattered
afternoon showers and thunderstorms along with slightly cooler
temperatures through the middle of next week. Temperatures to
average from highs in the low to mid 90s to lows in the mid 70s.
/05/
&&
.PRELIMINARY POINT TEMPS/POPS...
SHV 97 77 96 76 / 20 10 10 10
MLU 97 75 96 75 / 20 10 20 10
DEQ 96 72 96 73 / 10 10 10 10
TXK 95 75 96 75 / 20 10 10 10
ELD 96 73 97 75 / 10 10 10 10
TYR 96 76 96 76 / 20 10 10 10
GGG 96 75 96 75 / 20 10 10 10
LFK 95 74 95 75 / 20 20 20 20
&&
.SHV WATCHES/WARNINGS/ADVISORIES...
AR...Heat Advisory until 7 PM CDT Thursday for ARZ061-071>073.
LA...Heat Advisory until 7 PM CDT Thursday for LAZ001>006-010>014-
017>022.
OK...None.
TX...Heat Advisory until 7 PM CDT Thursday for TXZ126-138-150>153-
165>167.
&&
08Hazardous weather outlook, Jul 19, 4:50 AM CST, 4 hours 10 minutes before
Hazardous Weather Outlook National Weather Service Shreveport LA 550 AM CDT Wed Jul 19 2017 ARZ050-051-059-060-070-OKZ077-TXZ096-097-108>112-124-125-136-137- 149-201100- Sevier-Howard-Little River-Hempstead-Miller-McCurtain-Red River- Bowie-Franklin-Titus-Camp-Morris-Cass-Wood-Upshur-Smith-Gregg- Cherokee- 550 AM CDT Wed Jul 19 2017 This Hazardous Weather Outlook is for portions of southwest Arkansas, southeast Oklahoma and northeast Texas. .DAY ONE...Today and Tonight... No hazardous weather is expected. .DAYS TWO THROUGH SEVEN...Thursday through Tuesday... An upper level ridge of high pressure will maintain hot temperatures and slight chances of afternoon showers and thunderstorms through the end of the work week. With temperatures climbing into the mid and possibly upper 90s, afternoon heat indices may approach 105 degrees through Friday. Upper-ridge will weaken this weekend with the approach of a couple of weak upper level disturbances and an associated weak surface frontal system, which should result in an increase in scattered showers and thunderstorms, and slightly cooler temperatures. .SPOTTER INFORMATION STATEMENT... Activation of emergency management personnel...amateur radio operators...and storm spotters will not be needed tonight. ARZ061-071>073-LAZ001>006-010>014-017>022-TXZ126-138-150>153- 165>167-201100- Nevada-Lafayette-Columbia-Union-Caddo-Bossier-Webster-Claiborne- Lincoln-De Soto-Red River-Bienville-Jackson-Ouachita-Sabine- Natchitoches-Winn-Grant-Caldwell-La Salle-Marion-Harrison-Rusk- Panola-Nacogdoches-Shelby-Angelina-San Augustine- 550 AM CDT Wed Jul 19 2017 This Hazardous Weather Outlook is for portions of south central Arkansas, southwest Arkansas, north central Louisiana, northwest Louisiana, east Texas and northeast Texas. .DAY ONE...Today and Tonight... High temperatures in the mid to upper 90s, combined with a moist airmass in place, will allow for heat index values to climb to the around 105 to 108 degrees this afternoon. A heat advisory is in effect for today and Thursday. Precautions should be taken to minimize heat related illnesses while outside for prolonged periods of time. .DAYS TWO THROUGH SEVEN...Thursday through Tuesday... An upper level ridge of high pressure will maintain hot temperatures and slight chances of afternoon showers and thunderstorms through the end of the work week. With temperatures climbing into the mid to upper 90s, afternoon heat indices will range from 105 to 109 degrees through Friday. Upper ridge will begin to weaken this weekend with the approach of a couple of weak upper-level disturbances and an associated weak surface frontal system, which should result in an increase in scattered showers and thunderstorms, and slightly cooler temperatures. .SPOTTER INFORMATION STATEMENT... Activation of emergency management personnel...amateur radio operators...and storm spotters will not be needed tonight. 05
The radar
The national radar mosaic for the moment the first event began.
Event by event
9 heat. Local standard time, as filed.
Heat, Harrison
- When
- July 19, 9:00 AM CST to July 22, 6:00 PM CST
- Where
- Harrison forecast zone
- Reported by
- ASOS
- Coordinates
- 32.548, -94.371 (the zone’s center; the record gives no point)
Heat, Panola
- When
- July 19, 9:00 AM CST to July 22, 6:00 PM CST
- Where
- Panola forecast zone
- Reported by
- ASOS
- Coordinates
- 32.162, -94.306 (the zone’s center; the record gives no point)
Heat, Rusk
- When
- July 19, 9:00 AM CST to July 22, 6:00 PM CST
- Where
- Rusk forecast zone
- Reported by
- ASOS
- Coordinates
- 32.108, -94.762 (the zone’s center; the record gives no point)
Heat, Nacogdoches
- When
- July 19, 9:00 AM CST to July 22, 6:00 PM CST
- Where
- Nacogdoches forecast zone
- Reported by
- ASOS
- Coordinates
- 31.616, -94.616 (the zone’s center; the record gives no point)
Heat, Shelby
- When
- July 19, 9:00 AM CST to July 22, 6:00 PM CST
- Where
- Shelby forecast zone
- Reported by
- ASOS
- Coordinates
- 31.792, -94.145 (the zone’s center; the record gives no point)
Heat, Sabine
- When
- July 19, 9:00 AM CST to July 22, 6:00 PM CST
- Where
- Sabine forecast zone
- Reported by
- ASOS
- Coordinates
- 31.343, -93.852 (the zone’s center; the record gives no point)
Heat, San Augustine
- When
- July 19, 9:00 AM CST to July 22, 6:00 PM CST
- Where
- San Augustine forecast zone
- Reported by
- ASOS
- Coordinates
- 31.394, -94.168 (the zone’s center; the record gives no point)
Heat, Angelina
- When
- July 19, 9:00 AM CST to July 22, 6:00 PM CST
- Where
- Angelina forecast zone
- Reported by
- ASOS
- Coordinates
- 31.255, -94.612 (the zone’s center; the record gives no point)
What these are
- Heat
- Heat below excessive heat criteria that still caused deaths, injuries or significant impacts.
After NWS Directive 10-1605, the rules offices file Storm Data by.
The same day elsewhere
- Tornadoes and Damaging Winds in Iowa, July 19, 2017
- Flash Flooding and Flooding in Wisconsin, July 19 to 27, 2017
- Heat in Mississippi, July 19, 2017
- Flash Flooding and Hail in Arizona, July 19, 2017
- Flood and Damaging Winds in Wisconsin, July 19, 2017
- Tornadoes and Flash Flooding in Minnesota, July 19 to 20, 2017
- Damaging Winds and High Wind in Wisconsin, July 19 to 21, 2017
- Hail and Damaging Winds in South Carolina, July 19, 2017
- Damaging Winds in Iowa, July 19, 2017
- Tornadoes and Hail in Minnesota, July 19, 2017
- Damaging Winds in New Mexico, July 19, 2017
- Flash Flooding and Damaging Winds in Arizona, July 19, 2017
More
Every storm in Texas in 2017Every state in 2017This day in weather historyWarnings in Texas, July 2017
Sources
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: 703871, 703874, 703875, 703876, 703880, 703881, 703883, 703884, 703885.