Afternoon heat indices between 105 and 112 degrees occurred across much of the region from August 17 through August 21, 2019.
Every event with a place to put it; 46 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 FWD wrote it up.
Afternoon heat indices between 105 and 112 degrees occurred across much of the region from August 17 through August 21, 2019.
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 Fort Worth, TX wrote its last area forecast discussion before the first event at Aug 17, 5:29 AM CST, 5 hours 31 minutes earlier.
Area Forecast Discussion National Weather Service Fort Worth TX 629 AM CDT Sat Aug 17 2019 .AVIATION... /12Z TAFs/ No major aviation concerns are anticipated during this TAF period. Southerly flow and VFR conditions will persist today. By mid/late afternoon and especially this evening, strengthening low-level flow and residual boundary-layer mixing should yield an uptick in wind speeds (around 15 kt sustained with a few gusts up to 20-22 kt). Occasional gustiness may continue through the overnight as well. As for cloud cover, MVFR CIGs should remain southeast of KACT this morning. Across the region, fair-weather cumulus are expected to develop through the day, with bases around 070. Any regional convection this evening should remain displaced well to the west and north of Metroplex airports. Otherwise, the only potential concern is a re-invigoration of low-level stratus across Central Texas late tonight. Strengthening flow should transport these clouds northward towards KACT, but confidence in MVFR CIGs developing before 12Z Sunday is low; therefore, the TAF only advertises SCT015 through 12Z. Additionally, this cloud deck may try to approach the Metroplex Sunday morning (during KDFW's 30-hour extended TAF). At this time, low-level flow should keep any MVFR CIGs southeast of the Metroplex, but this will have to be monitored closely. Picca && .SHORT TERM... /Issued 308 AM CDT Sat Aug 17 2019/ /Through Tonight/ Rather impressive zonal mid-level flow (at least by August standards) is maintaining a tight low-level pressure gradient across the southern Plains currently, with recent VWP data suggesting 925mb flow from the south around 30-35 kt. In turn, Gulf moisture continues to stream north across our area. Thus, while afternoon mixing should be relatively deep, our low-level moisture should be of sufficient depth to maintain surface dew points in the 60s to lower 70s in most spots around peak heating. With temperatures rising into the upper 90s to lower 100s, this moisture profile should yield heat indices around 105-108 in many locations. Therefore, have opted to issue a heat advisory for today (as well as tomorrow -- see the long-term discussion for more details). Besides the heat, there's a slim chance for a shower or two across East Texas this afternoon, where the deepest moisture will reside. However, given a lack of any clear forcing for ascent and persistent dry air in the mid levels, refrained from introducing any convection to the forecast at this time. Picca && .LONG TERM... /Issued 308 AM CDT Sat Aug 17 2019/ /Sunday through Next Weekend/ A mid/upper ridge will strengthen while expanding north into the Plains on Sunday, then remain dominant across the Central part of the CONUS through the first part of next week. Triple digit high temperatures will be common at least through Monday. In addition, persistent southerly winds will continue to bring Gulf moisture northward across the region, preventing any significant diurnal drop in the dewpoint temperature. The resulting heat indices will be widespread in the 105 to 110 range each afternoon, and barring any unforeseen circumstances the Heat Advisory will likely need to be extended into Monday at some point this weekend. A brief opportunity for relief will occur Tuesday as a subtle weakness develops over the southern edge of the ridge. A strong seabreeze is progged to push inland Tuesday afternoon, and slight chance POPs have hence been added across the southeastern-most row of Counties. The rest of the region will remain hot and rain-free, though perhaps a couple of degrees cooler than Sunday/Monday. The latest guidance continues to indicate a break-down of the ridging over the Plains during the second half of next week as the ridge center shifts westward into the Rockies. A shortwave embedded in the subsequent northwest flow aloft should kick off a round of convection north of the region Wednesday afternoon. Showers and storms will likely move southeast, some of which may cross the Red River Wednesday evening. Low-end POPs have hence been included for areas north of the I-20 corridor Wednesday night, then to areas along and east of I-35 on Thursday as the disturbance continues to move southeast. A second shortwave will generate another round of showers and storms by Friday, but at this time it looks like the disturbance and associated convection will remain north of the region. Near-normal temperatures and little to no rain chances will therefore be the official forecast as we enter next weekend. 30 && .PRELIMINARY POINT TEMPS/POPS... Dallas-Ft. Worth 101 80 101 81 101 / 5 0 0 0 0 Waco 101 79 102 79 101 / 5 0 0 0 0 Paris 97 77 96 77 97 / 5 5 0 10 5 Denton 100 79 101 80 101 / 5 0 0 5 0 McKinney 99 78 100 79 100 / 5 0 0 5 0 Dallas 100 81 101 81 101 / 5 0 0 0 0 Terrell 99 78 102 79 101 / 10 0 0 0 0 Corsicana 99 78 99 78 98 / 10 0 0 0 0 Temple 100 78 101 77 99 / 5 0 0 0 0 Mineral Wells 102 78 102 77 101 / 5 0 0 0 0 && .FWD WATCHES/WARNINGS/ADVISORIES... Heat Advisory from noon today to 7 PM CDT Sunday for TXZ091>095- 100>107-115>123-129>135-141>148-156>162-174-175. && 11/30
Hazardous Weather Outlook National Weather Service Fort Worth TX 310 AM CDT Sat Aug 17 2019 TXZ091>095-100>107-115>123-129>135-141>148-156>162-174-175-180815- Montague-Cooke-Grayson-Fannin-Lamar-Young-Jack-Wise-Denton-Collin- Hunt-Delta-Hopkins-Stephens-Palo Pinto-Parker-Tarrant-Dallas- Rockwall-Kaufman-Van Zandt-Rains-Eastland-Erath-Hood-Somervell- Johnson-Ellis-Henderson-Comanche-Mills-Hamilton-Bosque-Hill-Navarro- Freestone-Anderson-Lampasas-Coryell-Bell-McLennan-Falls-Limestone- Leon-Milam-Robertson- 310 AM CDT Sat Aug 17 2019 This Hazardous Weather Outlook is for North and Central Texas. .DAY ONE...Today and Tonight. Heat index values will meet or exceed 105 degrees across a good portion of the region this afternoon. .DAYS TWO THROUGH SEVEN...Sunday through Friday. Afternoon heat index values will likely reach 105 or greater both Sunday and Monday afternoon. Low thunderstorm chances return Tuesday southeast of a line from Palestine to Temple. Low storm chances will occur mainly north of I-20 Wednesday night and east of I-35 on Thursday. Severe weather is not expected at this time. .SPOTTER INFORMATION STATEMENT... Spotter activation is not expected at this time.
The national radar mosaic for the moment the first event began.
46 heat. Local standard time, as filed.
Heat index values between 105 and 110 degrees occurred across the county during the afternoon hours from Saturday August 17 to Monday August 19 of 2019.
Heat index values between 105 and 110 degrees occurred across the county during the afternoon hours from Saturday August 17 to Monday August 19 of 2019.
Heat index values between 105 and 110 degrees occurred across the county during the afternoon hours from Saturday August 17 to Monday August 19 of 2019.
Heat index values between 105 and 110 degrees occurred across the county during the afternoon hours from Saturday August 17 to Monday August 19 of 2019.
Heat index values between 105 and 110 degrees occurred across the county during the afternoon hours from Saturday August 17 to Monday August 19 of 2019.
Heat index values between 105 and 110 degrees occurred across the county during the afternoon hours from Saturday August 17 to Monday August 19 of 2019.
Heat index values between 105 and 110 degrees occurred across the county during the afternoon hours from Saturday August 17 to Monday August 19 of 2019.
Heat index values between 105 and 110 degrees occurred across the county during the afternoon hours from Saturday August 17 to Monday August 19 of 2019.
Heat index values between 105 and 110 degrees occurred across the county during the afternoon hours from Saturday August 17 to Monday August 19 of 2019.
Heat index values between 105 and 110 degrees occurred across the county during the afternoon hours from Saturday August 17 to Monday August 19 of 2019.
Heat index values between 105 and 110 degrees occurred across the county during the afternoon hours from Saturday August 17 to Monday August 19 of 2019.
Heat index values between 105 and 110 degrees occurred across the county during the afternoon hours from Saturday August 17 to Monday August 19 of 2019.
Heat index values between 105 and 110 degrees occurred across the county during the afternoon hours from Saturday August 17 to Monday August 19 of 2019.
Heat index values between 105 and 110 degrees occurred across the county during the afternoon hours from Saturday August 17 to Monday August 19 of 2019.
Heat index values between 105 and 110 degrees occurred across the county during the afternoon hours from Saturday August 17 to Monday August 19 of 2019.
Heat index values between 105 and 110 degrees occurred across the county during the afternoon hours from Saturday August 17 to Monday August 19 of 2019.
Heat index values between 105 and 110 degrees occurred across the county during the afternoon hours from Saturday August 17 to Monday August 19 of 2019.
Heat index values between 105 and 110 degrees occurred across the county during the afternoon hours from Saturday August 17 to Monday August 19 of 2019.
Heat index values between 105 and 112 degrees occurred across the county during the afternoon hours from Saturday August 17 to Wednesday August 21 of 2019.
Heat index values between 105 and 112 degrees occurred across the county during the afternoon hours from Saturday August 17 to Wednesday August 21 of 2019.
Heat index values between 105 and 112 degrees occurred across the county during the afternoon hours from Saturday August 17 to Wednesday August 21 of 2019.
Heat index values between 105 and 112 degrees occurred across the county during the afternoon hours from Saturday August 17 to Wednesday August 21 of 2019.
Heat index values between 105 and 112 degrees occurred across the county during the afternoon hours from Saturday August 17 to Wednesday August 21 of 2019. Denton County Public Health reported 7 cases on Heat Related Illnesses during this period. Most of the cases were heat exhaustion.
Heat index values between 105 and 112 degrees occurred across the county during the afternoon hours from Saturday August 17 to Wednesday August 21 of 2019.
Heat index values between 105 and 112 degrees occurred across the county during the afternoon hours from Saturday August 17 to Wednesday August 21 of 2019.
Heat index values between 105 and 112 degrees occurred across the county during the afternoon hours from Saturday August 17 to Wednesday August 21 of 2019.
Heat index values between 105 and 112 degrees occurred across the county during the afternoon hours from Saturday August 17 to Wednesday August 21 of 2019.
Heat index values between 105 and 112 degrees occurred across the county during the afternoon hours from Saturday August 17 to Wednesday August 21 of 2019.
Heat index values between 105 and 112 degrees occurred across the county during the afternoon hours from Saturday August 17 to Wednesday August 21 of 2019.
Heat index values between 105 and 112 degrees occurred across the county during the afternoon hours from Saturday August 17 to Wednesday August 21 of 2019.
Heat index values between 105 and 112 degrees occurred across the county during the afternoon hours from Saturday August 17 to Wednesday August 21 of 2019.
Heat index values between 105 and 112 degrees occurred across the county during the afternoon hours from Saturday August 17 to Wednesday August 21 of 2019.
Heat index values between 105 and 112 degrees occurred across the county during the afternoon hours from Saturday August 17 to Wednesday August 21 of 2019.
Heat index values between 105 and 112 degrees occurred across the county during the afternoon hours from Saturday August 17 to Wednesday August 21 of 2019.
Heat index values between 105 and 112 degrees occurred across the county during the afternoon hours from Saturday August 17 to Wednesday August 21 of 2019.
Heat index values between 105 and 112 degrees occurred across the county during the afternoon hours from Saturday August 17 to Wednesday August 21 of 2019.
Heat index values between 105 and 112 degrees occurred across the county during the afternoon hours from Saturday August 17 to Wednesday August 21 of 2019.
Heat index values between 105 and 112 degrees occurred across the county during the afternoon hours from Saturday August 17 to Wednesday August 21 of 2019.
Heat index values between 105 and 112 degrees occurred across the county during the afternoon hours from Saturday August 17 to Wednesday August 21 of 2019.
Heat index values between 105 and 112 degrees occurred across the county during the afternoon hours from Saturday August 17 to Wednesday August 21 of 2019.
Heat index values between 105 and 112 degrees occurred across the county during the afternoon hours from Saturday August 17 to Wednesday August 21 of 2019.
Heat index values between 105 and 112 degrees occurred across the county during the afternoon hours from Saturday August 17 to Wednesday August 21 of 2019.
Heat index values between 105 and 112 degrees occurred across the county during the afternoon hours from Saturday August 17 to Wednesday August 21 of 2019.
Heat index values between 105 and 112 degrees occurred across the county during the afternoon hours from Saturday August 17 to Wednesday August 21 of 2019.
Heat index values between 105 and 112 degrees occurred across the county during the afternoon hours from Saturday August 17 to Wednesday August 21 of 2019.
Heat index values between 105 and 112 degrees occurred across the county during the afternoon hours from Saturday August 17 to Wednesday August 21 of 2019.
After NWS Directive 10-1605, the rules offices file Storm Data by.
Every storm in Texas in 2019Every state in 2019This day in weather historyWarnings in Texas, August 2019
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: 850355, 850356, 850357, 850358, 850359, 850360, 850361, 850362, 850363, 850364, 850365, 850366, 850367, 850368, 850369, 850370, 850371, 850372, 850377, 850378, 850379, 850380, 850381, 850382, 850383, 850384, 850385, 850386, 850387, 850388, 850389, 850390, 850391, 850392, 850393, 850394, 850395, 850396, 850397, 850398, and more.