Texas, 2007

Flash Flooding and Hail in Texas, June 20, 2007

June 20, 2007 · NWS FWD · 11 events in 11 counties and zones

A strong line of thunderstorms moved into north Texas during the early morning hours, causing wind damage in several counties. Storms redeveloped later in the afternoon.

Where it happened

Every event with a place to put it; 1 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

Open the live radar over this ground

The toll

Deaths
0
Injuries
0
Property damage
$361,000
Crop damage
None recorded
Events
11

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 FWD wrote it up.

A strong line of thunderstorms moved into north Texas during the early morning hours, causing wind damage in several counties. Storms redeveloped later in the afternoon.

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 Fort Worth, TX wrote its last area forecast discussion before the first event at Jun 20, 12:25 AM CST, 1 hour 5 minutes earlier.

Area forecast discussion, Jun 20, 12:25 AM CST, 1 hour 5 minutes before
AREA FORECAST DISCUSSION...UPDATED
NATIONAL WEATHER SERVICE FORT WORTH TX
125 AM CDT WED JUN 20 2007

.UPDATE...
UPDATED FORECASTS ARE BEING SENT TO INCLUDE SEVERE THUNDERSTORM WATCH
426 THAT IS IN EFFECT UNTIL 9 AM CDT. POPS/WX/QPF GRIDS WERE ALSO
ADJUSTED UPWARD FOR THE THUNDERSTORM COMPLEX OVER SOUTHERN OKLAHOMA
THAT IS BARRELING SOUTHWARD. #58

&&

.DISCUSSION...

&&

.PREV DISCUSSION... /ISSUED 1147 PM CDT TUE JUN 19 2007/

AVIATION...
1147 PM.
WE/LL BE UPDATING KDFW TRACON TAF SITES TO INCLUDE TSRA 12-15Z AS
OKLAHOMA CONVECTION CONTINUES TO MOVE SOUTH AT 21KT OVERNIGHT AS LLJ
FEEDS THE SYSTEM.  OTHER THAN SOME MORNING STRATUS AT KACT...MOST
VFR CONDITIONS ARE EXPECTED OUTSIDE OF CONVECTION.  LOW LEVEL FLOW
WILL REMAIN GENERALLY SOUTHEAST AT 6-12KT.  75

UPDATE...
1100 AM.
THUNDERSTORM COMPLEX IN CENTRAL OKLAHOMA CONTINUES TO MOVE SOUTH
AROUND 20 MPH. THE STORMS ARE STILL GOING STRONG AND CURRENT VAD
SHOWS ABOUT 25 KNOTS OF MOIST INFLOW.  HAVE DECIDED TO BE A LITTLE
MORE AGGRESSIVE WITH THE FORECAST WITH RESPECT TO THUNDERSTORM
CHANCES AND THE FLOODING POTENTIAL.  WILL BE ISSUING A FLASH FLOOD
WATCH FOR THE COUNTIES OF COOKE...GRAYSON...DENTON AND WISE THROUGH
MIDDAY WEDNESDAY.  ADDITIONAL RAINFALL AMOUNTS OF ONE TO TWO INCHES
IN A RELATIVELY SHORT TIME PERIOD WILL MOST CERTAINLY HAVE A HIGH
IMPACT IN THE FLASH FLOOD WATCH AREA. SINCE STORMS SHOULD NOT REACH
THE RED RIVER UNTIL ABOUT 3 OR 4 AM.  WILL LET THE NEXT SHIFT
REASSESS THE NEED FOR A WATCH FURTHER SOUTH ON WEDNESDAY.

ONLY OTHER CHANGE WILL BE TO BUMP OVERNIGHT LOWS DOWN A BIT IN THE
NORTH TO ACCOUNT FOR RAIN COOLED AIR.

79

UPDATE...
940 PM
IMPRESSIVE CONVECTIVE COMPLEXES DEVELOPING OVER OKLAHOMA AND THE
TEXAS PANHANDLE THIS EVENING.  THE BIG QUESTION IS WHAT DIRECTION
THESE STORMS WILL MOVE OVERNIGHT. IT APPEARS THAT A SOUTHWESTWARD
PROPAGATION IS MOST LIKELY BASED ON THE FORECASTED LOW LEVEL JET AND
CORFIDI VECTORS.  HOWEVER... THE LINE IS FILLING IN FAR ENOUGH EAST
THAT SOME STORMS WILL MOVE INTO NORTH TEXAS BEFORE SUNRISE
WEDNESDAY. THE BEST CHANCE FOR SEVERE STORMS AND HEAVY RAINFALL WILL
BE GENERALLY WEST OF A GAINESVILLE TO EASTLAND LINE. THE HEAVY
RAINFALL COULD LEAD TO FLOODING ISSUES AGAIN...ESPECIALLY IF THE
COMPLEX MOVES SLIGHTLY MORE SOUTHERLY. WE WILL INCREASE POPS IN THE
NORTH OVERNIGHT.  WE WILL ALSO INCREASE POPS ON WEDNESDAY DUE TO
WEAKENING STORM COMPLEX AND LEFT OVER OUTFLOW BOUNDARIES.

NO OTHER MAJOR CHANGES WITH THIS UPDATE.

AVIATION...
534 PM.
KDFW/KACT TRACONS ARE TO REMAIN VFR EXCEPT 12-15Z WHEN A STRATUS
DECK MAY ADVECT OVER THE SITES. AS EARLIER STATED...TONIGHT/S LLJ
WILL BE WEAKER...THUS THERE IS LESS OF A POTENTIAL FOR
STRATUS...HOWEVER WE/LL CARRY A BRIEF TEMPO TO COVER THE EVENT.
SOUTHERLY FLOW WILL CONTINUE THROUGH THE PERIOD WITH SKIES BECOME
SKC THIS EVENING. EXPECT SOME CIRRUS DEBRIS FROM WEST TEXAS AFTER
MIDNIGHT...AND SCATTERED CUMULUS WEDNESDAY LATE MORNING AND
AFTERNOON. HOT AND VERY HUMID WEDNESDAY AFTERNOON. 75

PREV DISCUSSION...
422 PM CDT
INTENSE HUMIDITY PREVAILS...WITH DEW POINTS IN THE 70S AREAWIDE.
ACARS DATA SHOWING LITTLE IN THE WAY OF CAPPING...BUT CU SHOWING
LITTLE VERTICAL EXTENT IN AN IMMENSELY UNSTABLE ENVIRONMENT. HEIGHTS
ALOFT ARE RISING WITH DEEP SUBSIDENCE. IN THE CAPE VS. CAP
BATTLE...CAP APPEARS TO BE WINNING.

SEA BREEZE ACTIVITY ABOUT 50 MILES SOUTHEAST OF CWA...MAKING
MINIMAL PROGRESS INLAND (INTO SUBSIDENT AREA). FRONTAL CONVECTION
IN ARKANSAS IS BUILDING WEST...BUT SHOULD FAIL TO REACH AS FAR
WEST AS NE CWA. MOISTURE SURGING WEST INTO WEST TEXAS...BUT WITH
EASTERLY WINDS PREVAILING ACROSS WEST TEXAS AND NEW MEXICO...
MOISTURE CONVERGENCE IS LESS THAN WHAT THE DEW POINT GRADIENT
WOULD IMPLY. REGARDLESS...CONVECTION HAS BEGUN FROM EASTERN NEW
MEXICO INTO THE BIG BEND REGION. THIS ACTIVITY WILL STAY WELL WEST
OF THE AREA.

BEYOND THE THREAT OF SPONTANEOUS CONVECTION ACROSS THE AREA THIS
AFTERNOON/EVENING...NEXT BEST CHANCE FOR PRECIP WILL BE FROM MCS
PLUNGING SOUTH FROM ONGOING CONVECTION IN KANSAS. MODELS DESIRE TO
STEER MCS SOUTHWESTWARD TOWARD BEST (THOUGH MEAGER) INFLOW. DEW
POINTS OF 60 TO 70F ON HIGH TERRAIN IS CONSIDERABLY BUOYANT...AND
WILL REMAIN SO THROUGHOUT THE NIGHT...PERHAPS AIDED BY ONGOING
AFTERNOON/EVENING STORMS. EXPECT MCS WILL BE MORE LIKELY TO HEAD
SOUTH OR EVEN SOUTHEAST THAN TRY TO PENETRATE RIDGE AT NIGHT.
WILL CARRY LOW END POPS IN NORTHERN FRINGE OF CWA FOR LATE NIGHT
TIME PERIOD. WILL CERTAINLY BEAR WATCHING.

EFFECTS OF RIDGE WILL BE SHORT-LIVED...AS UPPER HIGH WILL EASE
BACK WEST. NORTHERLY FLOW THIS WEEKEND COULD ALLOW FOR SOME
NOCTURNAL EVENTS...BUT THINK RIDGE WILL STILL BE DOMINANT. SOME
DISAGREEMENT NEXT WEEK...BUT TEXAS MAY FIND ITSELF IN THE TROPICAL
EASTERLIES SOUTH OF THE SUBTROPICAL RIDGES. WILL NOT INTRODUCE
POPS UNTIL THERE IS BETTER RUN-TO-RUN CONSISTENCY. 25

&&

.PRELIMINARY POINT TEMPS/POPS...
DALLAS-FT. WORTH, TX  76  94  75  94  75 /  10  10  10  10  10
WACO, TX              73  94  73  94  73 /  10  10  10  10  10
PARIS, TX             73  93  72  94  73 /  20  10  10  10  10
DENTON, TX            73  94  74  95  73 /  10  10  10  10  10
MCKINNEY, TX          72  94  72  95  72 /  10  10  10  10  10
DALLAS, TX            77  95  77  95  76 /  10  10  10  10  10
TERRELL, TX           73  95  73  95  74 /  20  10  10  10  10
CORSICANA, TX         74  93  73  94  73 /  20  10  10  10  10
TEMPLE, TX            74  93  73  93  73 /  10  10  10  10  10

&&

.FWD WATCHES/WARNINGS/ADVISORIES...
FLASH FLOOD WATCH UNTIL 1 PM CDT THIS AFTERNOON FOR THE
FOLLOWING ZONES: TXZ092-093-102-103.

&&

58/58
Hazardous weather outlook, Jun 19, 10:04 PM CST, 3 hours 26 minutes before
HAZARDOUS WEATHER OUTLOOK FOR NORTH TEXAS...UPDATED
NATIONAL WEATHER SERVICE FORT WORTH TX
1104 PM CDT TUE JUN 19 2007

TXZ091>095-100>107-115>123-129>135-141>148-156>162-174-175-201000-
ANDERSON-BELL-BOSQUE-COLLIN-COMANCHE-COOKE-CORYELL-DALLAS-DELTA-
DENTON-EASTLAND-ELLIS-ERATH-FALLS-FANNIN-FREESTONE-GRAYSON-HAMILTON-
HENDERSON-HILL-HOOD-HOPKINS-HUNT-JACK-JOHNSON-KAUFMAN-LAMAR-LAMPASAS-
LEON-LIMESTONE-MCLENNAN-MILAM-MILLS-MONTAGUE-NAVARRO-PALO PINTO-
PARKER-RAINS-ROBERTSON-ROCKWALL-SOMERVELL-STEPHENS-TARRANT-VAN ZANDT-
WISE-YOUNG-
1104 PM CDT TUE JUN 19 2007

THIS HAZARDOUS WEATHER OUTLOOK IS FOR NORTH TEXAS.

.DAY ONE...
A FLASH FLOOD WATCH IS IN EFFECT FOR COOKE...GRAYSON...WISE AND
DENTON COUNTIES THROUGH NOON WEDNESDAY. A LINE OF STRONG THUNDERSTORM
IN OKLAHOMA WILL MOVE ACROSS THE RED RIVER BEFORE DAYBREAK. THE MAIN
THREATS WILL BE LOCALIZED FLOODING...DAMAGING WIND AND CLOUD TO
GROUND LIGHTNING.

.DAYS TWO THROUGH SEVEN...
SCATTERED THUNDERSTORMS WILL BE POSSIBLE WEDNESDAY OVER ALL OF NORTH
TEXAS. THE MAIN THREAT WITH THESE STORMS WILL BE LOCALIZED FLOODING
AND CLOUD TO GROUND LIGHTNING.

.SPOTTER INFORMATION STATEMENT...
LIMITED SPOTTER ACTIVATION MAY BE REQUESTED AFTER 2 AM.

The radar

The Dyess AFB radar (KDYX), 87 km away, was scanning. The volume nearest the first event began at 07:27 UTC.

Open the radar archive at this moment

Event by event

7 thunderstorm wind, 2 flash flood, 1 hail, 1 strong wind. Local standard time, as filed.

Thunderstorm Wind, Young

When
June 20, 1:30 AM CST
Where
Young County, Newcastle
Measured
50 kt (58 mph) estimated gust
Property damage
$10,000
Reported by
Law Enforcement
Coordinates
33.200, -98.750

Power lines and poles were downed with power outages reported.

Thunderstorm Wind, Jack

When
June 20, 1:45 AM CST
Where
Jack County, 13 mi NW of Jacksboro
Measured
50 kt (58 mph) estimated gust
Reported by
Law Enforcement
Coordinates
33.353, -98.329

One tree blown down south of Antelope.

Thunderstorm Wind, Palo Pinto

When
June 20, 2:38 AM CST
Where
Palo Pinto County, Mineral Wells Arpt
Measured
53 kt (61 mph) estimated gust
Reported by
ASOS
Coordinates
32.780, -98.070

Mineral Wells ASOS reported a 61 MPH wind gust.

Thunderstorm Wind, Eastland

When
June 20, 2:40 AM CST
Where
Eastland County, Cisco
Measured
50 kt (58 mph) estimated gust
Reported by
Fire Department/Rescue
Coordinates
32.380, -98.970

Large tree limbs blown down.

Thunderstorm Wind, Parker

When
June 20, 2:45 AM CST
Where
Parker County, Springtown
Measured
50 kt (58 mph) estimated gust
Reported by
Law Enforcement
Coordinates
32.970, -97.680

Tree limbs blown down.

Thunderstorm Wind, Cooke

When
June 20, 3:16 AM CST
Where
Cooke County, 2 mi NW of Gainesville
Measured
52 kt (60 mph) estimated gust
Reported by
Emergency Manager
Coordinates
33.650, -97.175

Hail, Collin

When
June 20, 5:05 AM CST
Where
Collin County, Westminster
Measured
1 in hail
Reported by
Amateur Radio
Coordinates
33.370, -96.630

Flash Flood, Fannin

When
June 20, 6:00 AM CST to 8:00 AM CST
Where
Fannin County, 5 mi NE of Bonham
Cause
Heavy Rain
Reported by
Amateur Radio
Coordinates
33.631, -96.119

Water was over roads in the northeastern portion of the county.

Thunderstorm Wind, Lamar

When
June 20, 3:00 PM CST to 3:05 PM CST
Where
Lamar County, Paris
Measured
56 kt (64 mph) estimated gust
Property damage
$30,000
Reported by
Emergency Manager
Coordinates
33.650, -95.530

A motel and a restaurant sustained damage to their roofs on Highway 271 and Loop 286 on the north side of town. Power lines were also blown down.

Strong Wind, Anderson

When
June 20, 6:00 PM CST to 6:05 PM CST
Where
Anderson forecast zone
Measured
45 kt (52 mph) estimated gust
Property damage
$1,000
Reported by
Newspaper
Coordinates
31.813, -95.653 (the zone’s center; the record gives no point)

High winds caused a large tree to fall in the city park. Several other trees lost branches. The tree was likely easily pushed over in the saturated grounds.

Flash Flood, Grayson

When
June 20, 7:30 PM CST to 9:30 PM CST
Where
Grayson County, Denison to Sherman
Cause
Heavy Rain
Property damage
$320,000
Reported by
Other Federal Agency
Coordinates
33.750, -96.550

Highway 69 east of Denison was flooded and closed, as was Highway 75 north of town. A few homes in Denison were flooded. Several bridges were washed out in Sherman including bridges on Mayes Road and Ida Road. An automotive shop in Denison had water damage to computers, furniture, and cars and expected damages to total around $250,000.

What these are

Thunderstorm Wind
Winds from a thunderstorm of 50 knots (58 mph) or more, or lower winds that caused damage or casualties. Measured gusts are marked MG, estimated EG.
Hail
Hail three-quarters of an inch or larger, or smaller hail that caused damage, filed with the largest stone measured.
Flash Flood
Flooding that begins within six hours of the rain that causes it, or of a dam or levee failure or ice jam release, often with deadly speed.
Strong Wind
Non-thunderstorm winds below high wind criteria that nonetheless caused damage or casualties.

After NWS Directive 10-1605, the rules offices file Storm Data by.

The same day elsewhere

More

Every storm in Texas in 2007Every state in 2007This day in weather historyWarnings in Texas, June 2007

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: 37122, 37115, 37120, 37117, 37119, 37121, 37114, 37123, 37126, 38298, 37128.