An upper level disturbance provided enough lift to generate scattered showers and thunderstorms during the afternoons of July 8th and 9th. Damaging wind was the primary severe weather occurrence, but a few storms also produced quarter sized hail and caused localized flash flooding.
Every event with a place to put it. 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.
An upper level disturbance provided enough lift to generate scattered showers and thunderstorms during the afternoons of July 8th and 9th. Damaging wind was the primary severe weather occurrence, but a few storms also produced quarter sized hail and caused localized flash flooding.
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 Jul 8, 1:54 PM CST, 16 minutes earlier.
Area Forecast Discussion National Weather Service Fort Worth TX 254 PM CDT Sat Jul 8 2017 .SHORT TERM... /Through Tonight/ Scattered showers and thunderstorms have developed in the broad region of convergence ahead of the large southwestward moving outflow boundary that originated from convection across eastern Oklahoma and Arkansas last night. New outflows from the afternoon storms will also drop south and southwest through the afternoon and early evening hours and ignite additional scattered showers and storms primarily across the central and eastern zones. Due to large values of CAPE and temperatures in the mid to upper 90s, microbursts producing damaging wind gusts and frequent cloud to ground lightning will be the primary hazards with these storms. A weak upper trough axis situated across Oklahoma will drop south through the overnight hours. Some of the model guidance, namely the GFS and a few of the UCAR CAM ensemble members are indicating good convective development across Oklahoma tonight and drop this activity across the Red River by daybreak. Other models are much drier and this seems more believable as low level flow looks too weak to sustain an organized convective complex. In addition the activity this afternoon and early evening should have a stabilizing effect on the environment tonight. This afternoon and evening's activity may continue after sunset for a few more hours given that North Central Texas will be on the favorable side of the trough for continued lifting. However, the loss of heating should eventually result in dissipating of convection and have left PoPs out of the forecast after midnight. Otherwise lows tonight will be in the mid to upper 70s, with initially variable winds becoming light southeast. TR.92 && .LONG TERM... /Sunday through Friday/ Similar to today, Sunday should continue to feature scattered afternoon showers and thunderstorms as we remain to the east of stronger upper level ridging and within an axis of rich low level moisture. Persistent weak easterly flow across the northern half of our area should remain in place with southerly winds farther south. This weak low level convergence has been sufficient to trigger afternoon showers and thunderstorms. While there is some low chance for convection to already be ongoing during the morning on Sunday, generally weak flow aloft should inhibit more widespread organized convection, leaving an untouched and unstable atmosphere for afternoon pop-up thunderstorms. Coverage will again be around 30% for most areas, and similar to the last few days, an isolated severe storm with damaging wind gusts would be the main threat. As we head into Monday, there is some indication that the upper ridge to the west will begin to nudge into our area with slightly stronger southwesterly 850mb flow which should help strengthen the convective inhibition across North Texas. This would generally suggest that coverage of showers and thunderstorms would be lower, however, the guidance has struggled a little with the strength and center of the upper high to the west. In addition, a decent coverage of afternoon showers and thunderstorms across North Texas each afternoon appears to slightly reinforce a weakness in the mid level height fields on the eastern periphery of the upper ridge. This often happens in the summer and can result in the ridge never fully extending eastward and suppressing afternoon convection. So, for now, we'll maintain some low PoPs into Monday and Tuesday primarily across the eastern half of the CWA and continue to monitor the eastward progression of the upper ridge. As we head into the middle and latter part of the upcoming week, it appears that we'll be mainly dry and warm, but again, there are some discrepancies in the placement of the center of the ridge axis. If it remains to the west, then we may need to keep some low rain/storm chances in through the week. Dunn && .AVIATION... /Issued 1230 PM CDT Sat Jul 8 2017/ VFR conditions are expected to prevail, but afternoon thunderstorms will be a primary hazard. A moist, unstable, and uncapped atmosphere will be in place this afternoon and forcing along the outflow boundary moving in from the northeast will get storms started primarily northeast of the TRACON early this afternoon. Outflow boundaries from these storms should fire off more storms farther southwest which should put them in the DFW TRACON after 19z. Will show VCTS at all TAF sites from 20z to 0z. Right now confidence isn't high enough to show a tempo group for thunderstorms on station as coverage will still be in the 30% to 40% range. Storms will persist in the region a few hours after 0z but they should push southwest of the DFW TRACON by this time. Forecast confidence with convection is not high, so updates will be made to TAFs as trends become apparent. Otherwise expect additional convection Sunday afternoon and will show VCTS again in DFW extended TAF after 18z. There is an outside probability that storms may develop in Oklahoma late tonight and reach DFW area in the morning hours. Winds will be light and variable this morning, but could be gusty and variable later this afternoon due to influences from nearby convection. Winds should become light southeasterly by mid evening. TR.92 && .PRELIMINARY POINT TEMPS/POPS... Dallas-Ft. Worth 79 95 77 96 77 / 20 30 10 20 0 Waco 75 96 76 97 76 / 20 30 10 10 5 Paris 74 91 73 92 73 / 20 20 10 20 0 Denton 74 95 76 96 75 / 20 20 10 10 0 McKinney 74 93 75 93 75 / 20 30 10 20 0 Dallas 79 95 77 96 78 / 20 30 10 20 0 Terrell 75 94 75 94 75 / 20 30 10 20 5 Corsicana 74 93 75 94 75 / 20 30 10 20 5 Temple 74 97 75 97 75 / 20 30 10 10 5 Mineral Wells 72 96 73 96 73 / 20 20 10 5 0 && .FWD WATCHES/WARNINGS/ADVISORIES... None. && 92/91
Hazardous Weather Outlook National Weather Service Fort Worth TX 255 PM CDT Sat Jul 8 2017 TXZ091>095-100>107-115>123-129>135-141>148-156>162-174-175-091230- 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- 255 PM CDT Sat Jul 8 2017 This Hazardous Weather Outlook is for North and Central Texas. .DAY ONE...This Afternoon and Tonight. Isolated to scattered thunderstorms will be possible through the evening hours. Some storms could produce damaging wind gusts. The main hazards will be heavy rainfall and frequent lightning. .DAYS TWO THROUGH SEVEN...Sunday through Friday. Thunderstorm chances will continue across all of North Texas on Sunday and mainly east of I-35 on Monday through Wednesday. Similar to the last few days, isolated severe storms will be possible with damaging winds and frequent lightning being the main threat. .SPOTTER INFORMATION STATEMENT... Very limited spotter activation may be requested this afternoon and early evening.
Special Weather Statement National Weather Service Fort Worth TX 140 PM CDT SAT JUL 8 2017 TXZ094-095-081915- Lamar TX-Fannin TX- 140 PM CDT SAT JUL 8 2017 ...SIGNIFICANT WEATHER ADVISORY FOR WEST CENTRAL LAMAR AND EAST CENTRAL FANNIN COUNTIES UNTIL 215 PM CDT... At 140 PM CDT, Doppler radar was tracking a strong thunderstorm 8 miles northeast of Honey Grove, or 14 miles west of Paris, moving southwest at 5 mph. Wind gusts up to 50 mph will be possible with this storm. Locations impacted include... Honey Grove, Roxton and Toco. PRECAUTIONARY/PREPAREDNESS ACTIONS... Torrential rainfall is also occurring with this storm, and may lead to localized flooding. Do not drive your vehicle through flooded roadways. Frequent cloud to ground lightning is occurring with this storm. Seek a safe shelter inside a building or vehicle. && LAT...LON 3376 9582 3365 9565 3352 9574 3363 9602 TIME...MOT...LOC 1840Z 040DEG 5KT 3365 9580 92
Special Weather Statement National Weather Service Fort Worth TX 240 PM CDT SAT JUL 8 2017 TXZ093-082015- Grayson TX- 240 PM CDT SAT JUL 8 2017 ...SIGNIFICANT WEATHER ADVISORY FOR SOUTHEASTERN GRAYSON COUNTY UNTIL 315 PM CDT... At 239 PM CDT, Doppler radar was tracking a strong thunderstorm near Van Alstyne, or 10 miles south of Sherman, moving west at 10 mph. Wind gusts of 50 to 55 mph will be possible with this storm. Locations impacted include... Sherman, Van Alstyne, Howe, Whitewright, Gunter, Tom Bean, Dorchester and Luella. PRECAUTIONARY/PREPAREDNESS ACTIONS... Torrential rainfall is also occurring with this storm, and may lead to localized flooding. Do not drive your vehicle through flooded roadways. Frequent cloud to ground lightning is occurring with this storm. Seek a safe shelter inside a building or vehicle. This storm may intensify, so closely monitor for additional information or possible warnings from the National Weather Service. && LAT...LON 3357 9640 3340 9642 3341 9676 3359 9663 TIME...MOT...LOC 1939Z 088DEG 8KT 3347 9658 92
The Dallas/Ft Worth radar (KFWS), 95 km away, was scanning. The volume nearest the first event began at 20:09 UTC.
10 thunderstorm wind, 5 hail, 5 flood. Local standard time, as filed.
A 54 knot wind gust was reported by the McKinney, TX Automated Surface Observation System.
Allen Fire and Rescue reported that multiple large trees were uprooted and large branches were blown down in the city of Allen, TX.
A trained spotter reported quarter-sized hail in the city of Garland, TX.
Broadcast media reported quarter-sized hail near the intersection of Northside Dr and Interstate 35W.
A trained spotter reported a wind gust to 50 KT approximately 5 miles south-southwest of the city of Poynor, TX.
Emergency management reported roof damage to a couple of homes west and southwest of the city of Corsicana, TX.
A social media report indicated that multiple trees were blown down near the city of Corbet, TX.
A trained storm spotter reported hail up to quarter-sized and a wind gust around 40 MPH approximately 11 miles south of the city of Weatherford, TX.
Emergency management reported multiple trees down in the Tanglewood area of Fort Worth, TX.
Emergency management reported a large tree blown down on a house in the Overton Park area of Fort Worth, TX. Trees were also blown onto power lines in the same area.
A National Weather Service employee reported several trees down in the Benbrook area.
A National Weather Service Employee reported large branches blown down and several medium sized trees uprooted in the Ridglea Country Club Estates area of Fort Worth, TX.
A newspaper report indicated flooding at the 5700 block of Vickery Blvd in Fort Worth, TX.
A public report indicated quarter-sized hail in the Arlington Heights area of Fort Worth, TX.
A local newspaper reported that a large pecan tree estimated to be at least 130 years old was blown down in the Colonial Country Club area of Fort Worth, TX.
Emergency management reported quarter-sized hail near the intersection of FM 423 and Panther Creek Parkway in the city of Little Elm, TX.
Emergency management reported a vehicle stuck in high water at the 3300 block of West Freeway westbound in the city of Fort Worth, TX.
Emergency management reported high water of 3 to 4 feet deep near the intersection of Norwood Street and Morton Street in the city of Fort Worth, TX.
A newspaper reported that vehicles were trapped in high water near the 3000 block of Hulen Street in the city of Fort Worth, TX.
A news report indicated that 3 homeless men were swept away by flood waters. Two of the men made it out of the water, but the body of the third man was found in a retention pond behind the Walmart at Rayzor Ranch Marketplace.
As the offices recorded each death: direct deaths were caused by the weather itself, indirect ones by something it set in motion.
| Event | Date | Age | Sex | Where | Kind |
|---|---|---|---|---|---|
| Flood, Denton | 2017-07-09 | Male | In Water | Direct |
After NWS Directive 10-1605, the rules offices file Storm Data by.
Every storm in Texas in 2017Every state in 2017This day in weather historyWarnings in Texas, July 2017
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: 713354, 713344, 712366, 712367, 713355, 713346, 713347, 713370, 713348, 713363, 713350, 713351, 714400, 713359, 713353, 713372, 714401, 714402, 714403, 713603.