Persistent rainfall over several hours in Collin County resulted in significant flooding in the Nevada, Josephine, and Blue Mound areas. Also, a two car accident in Collin County that killed three adults and injured three more people was the result of hydroplaning.
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.
Persistent rainfall over several hours in Collin County resulted in significant flooding in the Nevada, Josephine, and Blue Mound areas. Also, a two car accident in Collin County that killed three adults and injured three more people was the result of hydroplaning.
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 Nov 20, 9:05 AM CST, 1 hour 2 minutes earlier.
AREA FORECAST DISCUSSION...UPDATED NATIONAL WEATHER SERVICE FORT WORTH TX 905 AM CST FRI NOV 20 2009 .AVIATION... 905 AM 06Z GFS/NAM AND 12Z RUC SHOW THE DRIER LOW LEVEL AIR THAT IS EXPECTED TO LIFT CEILINGS WILL NOT START FILTERING INTO METROPLEX TAF SITES UNTIL NEAR OR SLIGHTLY AFTER NOON. UNTIL THEN CEILINGS WILL CONTINUE TO VARY BETWEEN IFR/OCNL LIFR AND VFR. HAVE SLOWED DOWN THE LIFTING TREND...AND WILL CONTINUE TO UPDATE AS NECESSARY. 84 && .PREV DISCUSSION... /ISSUED 250 AM CST FRI NOV 20 2009/ THE UPPER TROUGH IS CURRENTLY LOCATED OVER WEST TEXAS WITH THE ASSOCIATED COLD FRONT DRAPED ALONG A LINE FROM WICHITA FALLS TO BRECKENRIDGE TO SW OF ABILENE. RAINFALL COVERAGE HAS CONTINUED TO EXPAND ACROSS NORTH TEXAS OVER THE LAST SEVERAL HOURS. A LINE OF SHOWERS AND STORMS DEVELOPED ALONG THE COLD FRONT /CLOSER TO THE UPPER TROUGH/ AROUND MIDNIGHT. THIS LINE HAS SINCE EXPANDED AND HAS BECOME DETACHED FROM THE SLOW MOVING COLD FRONT. EXPECT THIS LINE TO MAINTAIN ITSELF AS IT MOVES TO THE EAST GIVEN ITS PROXIMITY TO THE MAIN UPPER SUPPORT. LIGHT TO MODERATE STRATIFORM PRECIP WILL CONTINUE BEHIND THIS LEADING EDGE OF CONVECTION. ADDITIONAL PRECIP HAS FORMED IN NORTHEASTERN PORTIONS OF THE CWA...NEAR PARIS IN A REGION OF BROAD ISENTROPIC ASCENT. A LARGE AREA OF PRECIP IS LOCATED IN CENTRAL AND SOUTH TEXAS NEAR THE SURFACE TROUGH. EXPECT THIS ACTIVITY TO SLOWLY MOVE TO THE NE WHILE THE LEADING EDGE OF CONVECTION OVER NORTH TEXAS TO MOVE SE. THIS SCENARIO EQUALS CATEGORICAL POPS FOR AREAS EAST OF I-35 AND SOUTH OF I-20 FOR TODAY. WE HAVE SEEN PLENTY OF LIGHTNING STRIKES OVERNIGHT. THE LATEST AIRCRAFT SOUNDINGS FROM DFW SHOWS MID-LEVEL LAPSE RATES FROM 700 MB TO 500 MB IN THE 7 C/KM RANGE. THIS ELEVATED INSTABILITY WILL CONTINUE THROUGHOUT THE DAY AS THE DYNAMIC LIFT FROM THE UPPER TROUGH SLOWLY MOVE TO THE EAST. WILL CONTINUE TO MENTION SHOWERS AND THUNDERSTORMS IN THE GRIDS RATHER THAN SHOWERS WITH ISOLATED THUNDER. RAINFALL AMOUNTS WILL AVERAGE 1 TO 2 INCHES IN OUR SOUTHERN ZONES...WITH LESS THAN AN INCH ALONG THE I-20 CORRIDOR. THE THREAT OF WIDESPREAD FLASH FLOODING REMAINS LOW...AND WILL NOT ISSUE A FLASH FLOOD WATCH FOR TODAY. HOWEVER...FLOOD ADVISORIES AND PERHAPS ONE TO TWO FLASH FLOOD WARNING CAN BE EXPECTED. PRECIP WILL BE ENDING FROM WEST TO EAST TODAY...BUT STILL EXPECT SCATTERED LIGHT RAIN TO LINGER FOR AREAS MAINLY EAST OF I-35 OVERNIGHT AS THE UPPER LOW MOVES THROUGH. THE WEEKEND LOOKS TO BE PLEASANT WITH TEMPERATURES IN THE 60S AND 70S. THE NEXT COLD FRONT IS STILL SCHEDULED TO MOVE THROUGH OVERNIGHT MONDAY. MOISTURE CONTINUES TO BE SCARCE AND WILL JUST HOLD ONTO THE 20/30 POPS. ANOTHER REINFORCING COLD FRONT WILL MOVE THROUGH WEDNESDAY NIGHT TO KEEP THANKSGIVING SEASONABLE. 85/NH && .PRELIMINARY POINT TEMPS/POPS... DALLAS-FT. WORTH, TX 61 49 62 46 67 / 70 50 10 0 5 WACO, TX 63 49 64 47 70 / 80 50 10 0 5 PARIS, TX 59 48 58 43 63 / 70 60 40 10 5 DENTON, TX 59 46 63 43 69 / 70 50 10 0 5 MCKINNEY, TX 62 47 62 42 67 / 70 50 20 5 5 DALLAS, TX 62 50 64 48 67 / 80 60 10 5 5 TERRELL, TX 64 49 62 45 68 / 80 60 20 5 5 CORSICANA, TX 61 49 62 45 69 / 80 60 20 5 5 TEMPLE, TX 64 49 67 46 72 / 90 50 10 0 5 && .FWD WATCHES/WARNINGS/ADVISORIES... NONE. &&
HAZARDOUS WEATHER OUTLOOK NATIONAL WEATHER SERVICE FORT WORTH TX 321 AM CST FRI NOV 20 2009 TXZ091>095-100>107-115>123-129>135-141>148-156>162-174-175-210930- 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- 321 AM CST FRI NOV 20 2009 THIS HAZARDOUS WEATHER OUTLOOK IS FOR NORTH TEXAS. .DAY ONE...TODAY AND TONIGHT. SHOWERS AND THUNDERSTORMS TODAY WILL PRODUCE MODERATE TO HEAVY RAINFALL WITH LOCALIZED FLOODING POSSIBLE...ESPECIALLY EAST OF INTERSTATE 35. SEVERE THUNDERSTORMS ARE NOT EXPECTED. THUNDERSTORM CHANCES WILL END THIS EVENING. .DAYS TWO THROUGH SEVEN...SATURDAY THROUGH THURSDAY. HAZARDOUS WEATHER CONDITIONS ARE NOT EXPECTED. .SPOTTER INFORMATION STATEMENT... SPOTTER ACTIVATION IS NOT EXPECTED AT THIS TIME.
The national radar mosaic for the moment the first event began.
1 heavy rain, 1 flood. Local standard time, as filed.
A car hydroplanned on SH 78 just south of SH 205 causing the head-on collision of two cars. The collision resulted in the death of three adults and injured three others; including a toddler. The injuries to all three were nonlife-threatening and mostly consisted of broken bones.
Several roads were closed in the Nevada, Josephine, and Blue Ridge areas due to flooding. These roads were: CR 590@PR 5337; CR 638@FM 1777; Milton Street in Josephine; CRs 484, 504, 637, 668, 825, and 1216, and SH 1216. Barricades were installed at all of these locations. In addition, the bridge support of SH 5 at the East Fork of the Trinity River in McKinney was being washed out and the bridge had to closed for a few months. The flooding was the result of several hours of rainfall on ground that was already well saturated.
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 |
|---|---|---|---|---|---|
| Heavy Rain, Collin | 2009-11-20 | 42 | Female | Vehicle/Towed Trailer | Indirect |
| Heavy Rain, Collin | 2009-11-20 | 76 | Male | Vehicle/Towed Trailer | Indirect |
| Heavy Rain, Collin | 2009-11-20 | 74 | Female | Vehicle/Towed Trailer | Indirect |
After NWS Directive 10-1605, the rules offices file Storm Data by.
Every storm in Texas in 2009Every state in 2009This day in weather historyWarnings in Texas, November 2009
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: 200777, 200769.