Scattered strong thunderstorms developed during the early morning hours on July 5th, near a weak surface front and south of a closed upper level low pressure system over Eastern Oklahoma that drifted northeast along the Arkansas/Missouri border. These storms continued to develop and move east southeast across Southern McCurtain County Oklahoma into extreme Southwest Arkansas and Northeast Texas,…
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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 SHV wrote it up.
Scattered strong thunderstorms developed during the early morning hours on July 5th, near a weak surface front and south of a closed upper level low pressure system over Eastern Oklahoma that drifted northeast along the Arkansas/Missouri border. These storms continued to develop and move east southeast across Southern McCurtain County Oklahoma into extreme Southwest Arkansas and Northeast Texas, producing very heavy rainfall as storms moved repeatedly over the same areas. Total rainfall amounts through 12 pm that day ranged from 2-6+ inches over these areas, with the greatest totals falling over Central and Southern McCurtain County Oklahoma, as well as Southern Sevier, Southern Howard, and much of Little River Counties in Southwest Arkansas. The thunderstorms diminished by early afternoon over these areas before developing farther south across Northeast Texas, Southwest Arkansas, and Northern Louisiana along remnant outflow boundaries originating from the earlier cluster of storms.
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 5, 5:58 AM CST, 1 hour 2 minutes earlier.
Area Forecast Discussion National Weather Service Shreveport LA 658 AM CDT Wed Jul 5 2017 .AVIATION... Widespread SHRA/TSRA along and north of ktxk has resulted in intermittent VIS restrictions at the said terminal. These storms could near keld but confidence is low and thus a VCTS has been inserted. MVFR CIGS and VFR CIGS has been plaguing a few terminals especially sites that are not affected by the rainfall. Could see CIGS and VIS bounce around criteria until mid-late morning, where VFR criteria is expected. The aforementioned precipitation is expected to gradually wane throughout the morning/early afternoon hours with isolated -SHRA/-TSRA capable of developing just about anywhere this afternoon, given the moist conditions. Computer models hint at chances for renewed precipitation this evening- overnight, but exact location of development will be highly dependent on where lingering frontal boundaries from this morning's convection. Will expect terminals north of the Interstate-20 corridor, particularly ktxk could be under gun once again. && .PREV DISCUSSION... /issued 611 AM CDT Wed Jul 5 2017/ DISCUSSION... A strong cluster of storms has developed near a weak sfc front across portions of extreme SE Oklahoma, adjacent SW Arkansas, and extreme NE Texas this morning generally along the Red River. Radar estimates up to 4 inches of rainfall in the same vicinity as storms have essentially trained over the same area. Not expecting much movement in these storms over the next few hours, so Flash Flooding is a good possibility in this area. By mid morning, storms should decrease in intensity and begin to diminish across the region. However, another round of isolated to scattered storms is expected to develop across the region, with the highest concentration in North Central Louisiana this afternoon. Once again, another round of storms will develop late tonight as a shortwave disturbance moves along the Red River. Isolated to scattered showers and thunderstorms will linger across the region on Thursday as the shortwave departs the region. By Friday, a weak sfc front will try to push through the region, but not expecting it to get past the Interstate 20 corridor. No drier air is expected with it, but another round of showers and thunderstorms will be possible along the boundary. Models indicate that upper level ridging will remain in place over the Rockies and northwest flow aloft will remain in place across our region over the weekend through early next week along with weak upper level troughing. Several shortwave disturbances will track across the region giving us a chance of precip each day along in addition to diurnal afternoon thunderstorm development. Temperatures will generally remain in the upper 80s to low 90s across the region with lows in the low to mid 70s, but some uncertainties in temperatures are possible due to the location and timing of convection. /20/ && .PRELIMINARY POINT TEMPS/POPS... SHV 91 75 90 74 / 30 30 30 20 MLU 93 75 91 73 / 30 30 30 30 DEQ 86 69 89 69 / 80 30 30 10 TXK 89 72 89 73 / 60 30 30 10 ELD 87 73 89 71 / 30 30 30 20 TYR 90 74 92 74 / 30 30 20 20 GGG 91 75 91 74 / 30 30 30 20 LFK 94 76 93 74 / 20 20 30 20 && .SHV WATCHES/WARNINGS/ADVISORIES... AR...None. LA...None. OK...None. TX...None. && 29/20
Hazardous Weather Outlook National Weather Service Shreveport LA 719 AM CDT Wed Jul 5 2017 ARZ050-051-059>061-070>073-LAZ001>006-010>014-017>022-OKZ077- TXZ096-097-108>112-124>126-136>138-149>153-165>167-061230- Sevier-Howard-Little River-Hempstead-Nevada-Miller-Lafayette- Columbia-Union-Caddo-Bossier-Webster-Claiborne-Lincoln-De Soto- Red River-Bienville-Jackson-Ouachita-Sabine-Natchitoches-Winn- Grant-Caldwell-La Salle-McCurtain-Bowie-Franklin-Titus-Camp- Morris-Cass-Wood-Upshur-Marion-Smith-Gregg-Harrison-Cherokee-Rusk- Panola-Nacogdoches-Shelby-Angelina-San Augustine- 719 AM CDT Wed Jul 5 2017 This Hazardous Weather Outlook is for portions of south central Arkansas, southwest Arkansas, north central Louisiana, northwest Louisiana, southeast Oklahoma, east Texas and northeast Texas. .DAY ONE...Today and Tonight... A strong line of showers and thunderstorms continues to move slowly to the ESE across extreme Northeast Texas, southeast Oklahoma, and adjacent SW Arkansas this morning. This has resulted in several Flash Flooding reports due to over 4 inches of rainfall in several areas. Additional flooding is possible through mid morning. This line is expected to diminish by noon, but daytime heating may allow for additional widely scattered thunderstorms this afternoon across the rest of the region. .DAYS TWO THROUGH SEVEN...Thursday through Tuesday... Multiple rounds of thunderstorms will be possible through early next week as several disturbances will move slowly across the region from the northwest. While the threat of a few isolated severe storms cannot be ruled out, widespread severe weather is not expected. .SPOTTER INFORMATION STATEMENT... Due to the isolated nature of the severe threat, activation of emergency management personnel, amateur radio operators, and storm spotters is not anticipated through tonight. 20
PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE SHREVEPORT LA
623 AM CDT WED JUL 5 2017
..TIME... ...EVENT... ...CITY LOCATION... ...LAT.LON...
..DATE... ....MAG.... ..COUNTY LOCATION..ST.. ...SOURCE....
..REMARKS..
0610 AM FLASH FLOOD VALLIANT 34.00N 95.09W
07/05/2017 MCCURTAIN OK EMERGENCY MNGR
SEVERAL INCHES OF WATER FLOWING OVER HIGHWAY
70 IN VALLIANT.
&&
20PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE SHREVEPORT LA
644 AM CDT WED JUL 5 2017
..TIME... ...EVENT... ...CITY LOCATION... ...LAT.LON...
..DATE... ....MAG.... ..COUNTY LOCATION..ST.. ...SOURCE....
..REMARKS..
0635 AM FLASH FLOOD FOREMAN 33.72N 94.40W
07/05/2017 LITTLE RIVER AR LAW ENFORCEMENT
SHERIFF REPORTS FLASH FLOODING ACROSS HWY
108 NEAR FOREMAN.
&&
20PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE SHREVEPORT LA
647 AM CDT WED JUL 5 2017
..TIME... ...EVENT... ...CITY LOCATION... ...LAT.LON...
..DATE... ....MAG.... ..COUNTY LOCATION..ST.. ...SOURCE....
..REMARKS..
0635 AM FLASH FLOOD 7 SE WINTHROP 33.77N 94.26W
07/05/2017 LITTLE RIVER AR LAW ENFORCEMENT
SHERIFF REPORTS FLASH FLOODING ACROSS HWY
234 NEAR THE ALLEENE COMMUNITY.
&&
20PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE SHREVEPORT LA
658 AM CDT WED JUL 5 2017
..TIME... ...EVENT... ...CITY LOCATION... ...LAT.LON...
..DATE... ....MAG.... ..COUNTY LOCATION..ST.. ...SOURCE....
..REMARKS..
0612 AM TSTM WND DMG 3 E TOM 33.74N 94.52W
07/05/2017 MCCURTAIN OK 911 CALL CENTER
TREE DOWN ALONG THE WESTBOUND LANE OF
HIGHWAY 3. GROUND IS SATURATED FROM THE
FLOODING RAINS.
&&
PALMERPRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE SHREVEPORT LA
703 AM CDT WED JUL 5 2017
..TIME... ...EVENT... ...CITY LOCATION... ...LAT.LON...
..DATE... ....MAG.... ..COUNTY LOCATION..ST.. ...SOURCE....
..REMARKS..
0650 AM FLASH FLOOD 2 W BOKHOMA 33.82N 94.61W
07/05/2017 MCCURTAIN OK 911 CALL CENTER
SEVERAL REPORTS OF FLASH FLOODING ACROSS THE
SOUTHERN AND WESTERN PORTIONS OF MCCURTAIN
COUNTY.
&&
PALMERSpecial Weather Statement
National Weather Service Shreveport LA
718 AM CDT WED JUL 5 2017
ARZ050-051-059-060-070-071-OKZ077-TXZ096-097-108>112-124>126-051315-
Howard AR-Lafayette AR-Sevier AR-Little River AR-Miller AR-
Hempstead AR-McCurtain OK-Marion TX-Wood TX-Franklin TX-Morris TX-
Upshur TX-Cass TX-Camp TX-Bowie TX-Red River TX-Titus TX-
718 AM CDT WED JUL 5 2017
...SIGNIFICANT WEATHER ADVISORY FOR SOUTHWESTERN HEMPSTEAD...
SEVIER...CENTRAL LAFAYETTE...SOUTHEASTERN HOWARD...LITTLE RIVER...
MILLER...SOUTHEASTERN MCCURTAIN...NORTHWESTERN MARION...FRANKLIN...
BOWIE...NORTHERN UPSHUR...TITUS...CASS...NORTHEASTERN WOOD...
MORRIS...CAMP AND RED RIVER COUNTIES UNTIL 815 AM CDT...
At 718 AM CDT, Doppler radar was tracking strong thunderstorms along
a line extending from near Horatio to 10 miles northeast of Boxelder
to Deport. Movement was south at 45 mph.
Winds of 30 to 40 mph and very heavy rainfall will be possible with
these storms.
Locations impacted include...
Texarkana, Mount Pleasant, De Queen, Atlanta, Wake Village, Ashdown,
New Boston, Pittsburg, Winnsboro, Clarksville, Stamps, Lewisville,
Mineral Springs, Dierks, Horatio, Foreman, Boxelder, Hagansport,
Leesburg and Idabel.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
Torrential rainfall is also occurring with these storms, and may lead
to localized flooding. Do not drive your vehicle through flooded
roadways.
Frequent cloud to ground lightning is occurring with these storms.
Lightning can strike 10 miles away from a thunderstorm. Seek a safe
shelter inside a building or vehicle.
&&
LAT...LON 3296 9531 3380 9531 3386 9490 3417 9405
3326 9345 3326 9348 3321 9348 3285 9456
3274 9538 3296 9542
TIME...MOT...LOC 1218Z 345DEG 38KT 3390 9440 3361 9481 3352 9535
FBThe Shreveport radar (KSHV), 172 km away, was scanning. The volume nearest the first event began at 12:59 UTC.
2 flash flood. Local standard time, as filed.
High water covered Cedar Street in Clarksville.
Low water crossings were flooded in and near Mount Vernon.
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: 701190, 701193.