Alert archive / Texas / Flash Flood Warnings in 2007

Flash Flood Warning 53, NWS Fort Worth, TX

March 30, 2007Comanche County, Texas

NWS Fort Worth, TX issued this flash flood warning at Mar 30, 2007, 7:18 PM CDT for Comanche County, Texas. It was in force for 3 hr. No storm report in the archive falls inside the area while it was in force.

The area

The counties it named.

The facts

Issued: Mar 30, 2007, 7:18 PM CDT (00:18 UTC)
Expired: Mar 30, 2007, 10:15 PM CDT
In force: 3 hr
Issued by: NWS Fort Worth, TX
Area: Whole counties

County Comanche County, TX

The radar

The Dyess AFB radar (KDYX), 93 km from the middle of the area, began a volume at 00:18 UTC, the scan nearest the moment this went out.

Open the radar archive at this moment

The archived warnings, watches and discussions in force at that minute are drawn over the scan, this one among them.

The nearest sounding before it

Fort Worth, TX (KFWD), launched 00:00Z, 0.3 hours before the alert went out and 154 km from the middle of its area. This is the routine balloon launch nearest before it, the air the forecaster had in hand, not a measurement taken for the alert.

Skew-T log-p

Temperature in red, dew point in green, the mixed-layer parcel dashed.

Hodograph

The wind turning with height, colored by layer: ground to 1 km, 1 to 3 km, 3 to 6 km, 6 to 10 km.

Mixed-layer CAPE: 249 J/kg
Mixed-layer CIN: -6 J/kg
Mixed-layer LCL: 644 m above ground
0-6 km bulk shear: 44 kt
0-1 km storm-relative helicity: 183 m²/s²
0-3 km storm-relative helicity: 158 m²/s²
Significant tornado parameter: 0.2
Supercell composite: 0.9

Open this sounding in Storm Lab

The text

As transmitted, in the capitals the NWS used until 2016.

000 
WGUS54 KFWD 310018
FFWFWD
TXC093-310315-

BULLETIN - EAS ACTIVATION REQUESTED
FLASH FLOOD WARNING
NATIONAL WEATHER SERVICE FORT WORTH TX
718 PM CDT FRI MAR 30 2007

THE NATIONAL WEATHER SERVICE IN FORT WORTH HAS ISSUED A

* FLASH FLOOD WARNING FOR...
  COMANCHE COUNTY IN NORTH CENTRAL TEXAS...

* UNTIL 1015 PM CDT

* AT 715 PM CDT...NATIONAL WEATHER SERVICE METEOROLOGISTS DETECTED   
  VERY HEAVY RAIN OF 1 TO 2 INCHES PER HOUR FROM COMANCHE...SOUTH 
  TOWARD INDIAN GAP. THE LINE OF ACTIVITY WAS ONLY MOVING EAST AT 10 
  MPH...WHILE INDIVIDUAL THUNDERSTORMS WERE MOVING NORTHEAST AT 25 
  MPH. RAINFALL AMOUNTS TO BETWEEN 2 AND 4 INCHES...WITH LOCALIZED 
  HIGHER AMOUNTS CAN BE EXPECTED THIS EVENING...ESPECIALLY ACROSS 
  THE SOUTHERN HALF OF THE COUNTY WITHIN THE WARNED AREA.

* LOCATIONS IN THE WARNING INCLUDE BUT ARE NOT LIMITED TO DE LEON

BE ESPECIALLY CAUTIOUS AT NIGHT WHEN IT IS HARDER TO RECOGNIZE THE
DANGERS OF FLOODS AND FLASH FLOODS. IF FLASH FLOODING IS OBSERVED ACT
QUICKLY. MOVE UP TO HIGHER GROUND TO ESCAPE FLOOD WATERS. DO NOT STAY
IN AREAS SUBJECT TO FLOODING WHEN WATER BEGINS RISING.

TO REPORT FLOODING...HAVE THE NEAREST LAW ENFORCEMENT AGENCY RELAY
YOUR REPORT TO THE NATIONAL WEATHER SERVICE FORECAST OFFICE IN FORT
WORTH.

LAT...LON 3224 9858 3224 9855 3196 9835 3194 9832
      3195 9828 3184 9820 3175 9843 3172 9867
      3184 9877 3206 9891

$$

What forecasters said that day

The local office's own words before this flash flood warning went out, 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 this flash flood warning went out at Mar 30, 5:36 PM CDT, 1 hour 42 minutes earlier.

Area forecast discussion, Mar 30, 5:36 PM CDT, 1 hour 42 minutes before

AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE FORT WORTH TX
536 PM CDT FRI MAR 30 2007

.UPDATE...
UPDATED TO ADD TORNADO WATCH NUMBER 95.

&&

.PREV DISCUSSION... /ISSUED 505 PM CDT FRI MAR 30 2007/

DISCUSSION...
UPDATED TO REMOVE SOME OF THE TORNADO WATCH FOR THE EXTREME
NORTHWEST COUNTIES AND TO ADD LIMESTONE TO THE WATCH PER REQUEST
FROM SPC. NEW WATCH WILL BE ISSUED BEFORE 6 PM TO REPLACE CURRENT
WATCH. OTHERWISE...ADJUSTMENTS WERE MADE TO THE FORECAST TO SHOW
FASTER CLEARING OUT OF THE PRECIP THIS EVENING FROM WEST TO EAST
AS COLD AIR IS BEGINNING TO MOVE SOUTHEAST.  TR.92

PREV DISCUSSION... /ISSUED 345 PM CDT FRI MAR 30 2007/

DISCUSSION...
ANOTHER VERY BUSY WEATHER DAY...

A VERY STRONG SHORT WAVE WAS IN THE PROCESS OF MOVING NORTHEAST
ACROSS NORTH TEXAS THIS AFTERNOON. WIDESPREAD SHOWERS AND
THUNDERSTORMS HAVE DEVELOPED AGAIN...AS THE SHORT WAVE TROUGH
(UPPER AIR DISTURBANCE) HAS ROTATED INTO NORTHERN PORTIONS OF
TEXAS AND SOUTHERN OKLAHOMA. FURTHER SOUTH...ANOTHER AREA OF
SHOWERS/THUNDERSTORMS HAS SPREAD ACROSS SOUTH AND SOUTHEAST
PORTIONS OF NORTH TEXAS. STRONGER INSTABILITIES...AND A SUB-TROPICAL
JET MAX HAVE LIKELY HAD SOMETHING TO DO WITH THE FORMATION OF THE SOUTHERN
AREA OF THUNDERSTORMS.

THE MAIN BODY OF PRECIPITATION WILL CONTINUE TO ROTATE INTO
OKLAHOMA TONIGHT. THE SOUTHERN CONVECTION LIKELY WILL FIRE OFF
INTO A SQUALL LINE (AS INDICATED BY THE MODELS) AND HOT-FOOT IT
INTO LOUISIANA AND SOUTHEAST TEXAS TONIGHT AND SATURDAY.

THERE ARE SEVERAL DAYS WITH LOW THUNDERSTORM CHANCES...MAINLY
TUESDAY AND WEDNESDAY OF NEXT WEEK. HOWEVER...THESE EVENTS LIKELY
WILL NOT BE NEARLY AS SIGNIFICANT AS WHAT WE HAVE EXPERIENCED OVER
THE PAST DEW DAYS.

LOOK FOR MILD TO COOL TEMPERATURES NEXT WEEK...AS SEVERAL COOL
FRONTS MOVE THROUGH THE AREA. WE HAVE CHANGED THE TEMPERATURE
FORECASTS A BIT...MAINLY LOWERING LOW TEMPERATURES A FEW DEGREES. #26
WE WILL HOLD ON WITH THE FLASH FLOOD WATCH...UNTIL MIDNIGHT OR
MAYBE AFTER. THE TORNADO WATCH WILL EXPIRE AT 600 PM.

 &&

&&

.PRELIMINARY POINT TEMPS/POPS...
DALLAS-FT. WORTH, TX  56  71  50  81  57 / 100  20  10   0   0
WACO, TX              54  72  50  81  56 / 100  20  10   0   0
PARIS, TX             58  70  51  79  54 / 100  60  10   0   0
DENTON, TX            54  71  46  81  56 / 100  20  10   0   0
MCKINNEY, TX          54  71  46  82  55 / 100  20  10   0   0
DALLAS, TX            56  72  54  81  60 / 100  20  10   0   0
TERRELL, TX           54  71  48  82  56 / 100  30  10   0   0
CORSICANA, TX         55  69  50  81  57 / 100  40  10   0   0
TEMPLE, TX            54  72  50  81  55 / 100  30  10   0   0

&&

.FWD WATCHES/WARNINGS/ADVISORIES...
FLASH FLOOD WATCH UNTIL MIDNIGHT CDT TONIGHT FOR THE FOLLOWING
ZONES:
TXZ091>095-100>107-115>123-129>135-141>148-156>162-174-175.

&&

99/99

Hazardous weather outlook, Mar 30, 4:15 AM CDT, 15 hours 3 minutes before

HAZARDOUS WEATHER OUTLOOK FOR NORTH TEXAS
NATIONAL WEATHER SERVICE FORT WORTH TX
415 AM CDT FRI MAR 30 2007

TXZ091>095-100>107-115>123-129>135-141>148-156>162-174-175-311000-
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-
415 AM CDT FRI MAR 30 2007

THIS HAZARDOUS WEATHER OUTLOOK IS FOR NORTH TEXAS.

.DAY ONE...
A FLASH FLOOD WATCH REMAINS IN AFFECT FOR ALL OF NORTH TEXAS THROUGH
MIDNIGHT TONIGHT.

THERE IS A MODERATE RISK OF SEVERE THUNDERSTORMS THROUGH THIS EVENING
ACROSS THE SOUTHWEST PORTIONS OF NORTH TEXAS...GENERALLY SOUTHWEST
OF A LINE FROM PALO PINTO TO TEMPLE. THERE IS A SLIGHT RISK OF
SEVERE THUNDERSTORMS ACROSS THE REMAINDER OF NORTH TEXAS THROUGH
THIS EVENING.

A POWERFUL UPPER LEVEL DISTURBANCE AND SURFACE COLD FRONT WILL
APPROACH FROM THE WEST THROUGH TONIGHT AND BRING A VERY GOOD CHANCE OF
THUNDERSTORMS TO THE ENTIRE REGION.  THE MAIN HAZARD ASSOCIATED WITH
THESE STORMS WILL BE FROM FLOODING AND FLASH FLOODING AS MANY AREAS
RECEIVED APPRECIABLE RAINFALL YESTERDAY. ADDITIONAL RAINFALL AMOUNTS
OF TWO TO THREE INCHES ARE POSSIBLE WITH ISOLATED THREE TO FOUR INCH
AMOUNTS.

FORECASTED VERTICAL WIND SHEAR PROFILES AND INSTABILITY SUGGEST THE
POTENTIAL FOR SUPERCELL THUNDERSTORMS WITHIN THE MODERATE RISK AREA.
THESE STORMS WILL BE CAPABLE OF LARGE HAIL...DAMAGING DOWNBURST
WINDS AND A FEW TORNADOES. ACROSS THE REMAINDER OF NORTH
TEXAS...WIND SHEAR AND INSTABILITY WILL NOT BE AS FAVORABLE FOR
TORNADIC STORMS BUT LARGE HAIL AND DAMAGING WINDS WILL BE POSSIBLE.

.DAYS TWO THROUGH SEVEN...
THUNDERSTORMS WILL END FROM NORTHWEST TO SOUTHEAST SATURDAY WITH THE
SOME ADDITIONAL FLOODING POSSIBLE SATURDAY MORNING.

THE NEXT CHANCE OF THUNDERSTORMS WILL BE NEXT TUESDAY AND WEDNESDAY.

.SPOTTER INFORMATION STATEMENT...
SPOTTER ACTIVATION MAY BE REQUESTED TODAY AND THIS EVENING FOR
FLOODING REPORTS.  SPOTTER ACTIVATION FOR SEVER WEATHER REPORTS IS
ALSO POSSIBLE THIS AFTERNOON AND TONIGHT ACROSS ALL OF NORTH TEXAS.

In the hours before

Local storm report, Mar 30, 6:19 PM CDT, 59 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE FORT WORTH TX
619 PM CDT FRI MAR 30 2007

..TIME..    ...EVENT...      ...CITY LOCATION...     ...LAT.LON...
..DATE..    ....MAG....      ..COUNTY LOCATION..ST.. ...SOURCE....
            ..REMARKS..

0618 PM     FLASH FLOOD      GRAHAM                  33.10N  98.58W
03/30/2007                   YOUNG              TX   LAW ENFORCEMENT

            SEVERAL ROADS CLOSED AND BARRICADED ACROSS THE COUNTY.

Special weather statement, Mar 30, 6:34 PM CDT, 44 minutes before

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE FORT WORTH TX
634 PM CDT FRI MAR 30 2007

TXZ103-104-118>121-133-134-310000-
DENTON TX-COLLIN TX-TARRANT TX-DALLAS TX-ROCKWALL TX-KAUFMAN TX-
JOHNSON TX-ELLIS TX-
634 PM CDT FRI MAR 30 2007

...SIGNIFICANT WEATHER ADVISORY FOR...
  COLLIN COUNTY
  DALLAS COUNTY
  DENTON COUNTY
  NORTHERN ELLIS COUNTY
  JOHNSON COUNTY
  NORTHWESTERN KAUFMAN COUNTY
  ROCKWALL COUNTY
  TARRANT COUNTY

THUNDERSTORMS WILL INCREASE IN COVERAGE AND INTENSITY ACROSS THE
DALLAS-FORT WORTH METROPLEX DURING THE EVENING HOURS...RESULTING IN
AN INCREASING THREAT OF HEAVY RAINFALL AND FLASH FLOODING.
THUNDERSTORMS CURRENTLY EXTENDING FROM NEAR DENTON TO WEATHERFORD TO
STEPHENVILLE WILL MOVE EAST THROUGH 10 PM...LIKELY RESULTING IN VERY
HEAVY RAINFALL OF UP TO 2 INCHES PER HOUR. IN ADDITION...THE
STRONGER STORMS MAY BECOME SEVERE...PRODUCING LARGE HAIL...DAMAGING
WINDS AND ISOLATED TORNADOES.

RESIDENTS ACROSS THE DFW METROPLEX SHOULD MONITOR CHANGING WEATHER
CONDITIONS THIS EVENING.

HEAVY RAINFALL MAY RESULT IN FLOODING OF LOW LYING AREAS SUCH AS
DITCHES AND UNDERPASSES. AVOID THESE AREAS AND DO NOT CROSS FLOODED
ROADS AS THEY MAY BE WASHED OUT.

A TORNADO WATCH REMAINS IN EFFECT UNTIL 100 AM CDT SATURDAY MORNING
FOR EASTERN TEXAS.

LAT...LON 3220 9760 3236 9647 3285 9634 3337 9638
      3338 9733 3290 9751

07/BB

Local storm report, Mar 30, 6:40 PM CDT, 38 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE FORT WORTH TX
640 PM CDT FRI MAR 30 2007

..TIME..    ...EVENT...      ...CITY LOCATION...     ...LAT.LON...
..DATE..    ....MAG....      ..COUNTY LOCATION..ST.. ...SOURCE....
            ..REMARKS..

0636 PM     FLASH FLOOD      JACKSBORO               33.22N  98.15W
03/30/2007                   JACK               TX   LAW ENFORCEMENT

            SEVERE FLOODING ACROSS THE ENTIRE COUNTY...SEVERAL ROADS
            CLOSED.

Local storm report, Mar 30, 6:50 PM CDT, 28 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE FORT WORTH TX
650 PM CDT FRI MAR 30 2007

..TIME..    ...EVENT...      ...CITY LOCATION...     ...LAT.LON...
..DATE..    ....MAG....      ..COUNTY LOCATION..ST.. ...SOURCE....
            ..REMARKS..

0649 PM     FLASH FLOOD      KEMPNER                 31.08N  98.00W
03/30/2007                   LAMPASAS           TX   LAW ENFORCEMENT

            SEVERAL ROAD CLOSURES...HWY. 190

Local storm report, Mar 30, 7:14 PM CDT, 4 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE FORT WORTH TX
714 PM CDT FRI MAR 30 2007

..TIME..    ...EVENT...      ...CITY LOCATION...     ...LAT.LON...
..DATE..    ....MAG....      ..COUNTY LOCATION..ST.. ...SOURCE....
            ..REMARKS..

0713 PM     FLASH FLOOD      DUBLIN                  32.09N  98.34W
03/30/2007                   ERATH              TX   TRAINED SPOTTER

            WATER OVER ROADS.

Local storm report, Mar 30, 7:16 PM CDT, 2 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE FORT WORTH TX
716 PM CDT FRI MAR 30 2007

..TIME..    ...EVENT...      ...CITY LOCATION...     ...LAT.LON...
..DATE..    ....MAG....      ..COUNTY LOCATION..ST.. ...SOURCE....
            ..REMARKS..

0715 PM     FLASH FLOOD      BOWIE                   33.56N  97.84W
03/30/2007                   MONTAGUE           TX   LAW ENFORCEMENT

            CONTINUING FLOODING COUNTYWIDE. NUMEROUS ROADS CLOSED -
            OUT OF BARRICADES.

The office that day

Everything else NWS Fort Worth, TX issued on the same UTC day.

Issued	Product	Office	Counties	Lasted
Mar 30, 7:04 PM CDT	Flash Flood Warning	FWD	Erath, Hood	4 hr
Mar 30, 7:12 PM CDT	Flash Flood Warning	FWD	Montague	4 hr
Mar 30, 7:24 PM CDT	Flash Flood Warning	FWD	Tarrant	4 hr
Mar 30, 7:37 PM CDT	Flash Flood Warning	FWD	Hamilton, Mills	4 hr
Mar 30, 7:51 PM CDT	Flash Flood Warning	FWD	Johnson, Somervell	4 hr
Mar 30, 8:04 PM CDT	Flash Flood Warning	FWD	Bosque	4 hr
Mar 30, 8:17 PM CDT	Flash Flood Warning	FWD	Dallas	3 hr
Mar 30, 8:17 PM CDT	Flash Flood Warning	FWD	Ellis, Hill	4 hr
Mar 30, 8:36 PM CDT	Flash Flood Warning	FWD	Collin, Denton	3 hr
Mar 30, 8:42 PM CDT	Severe Thunderstorm Warning	FWD	Dallas	48 min
Mar 30, 8:56 PM CDT	Severe Thunderstorm Warning	FWD	Collin, Kaufman, Rockwall	49 min
Mar 30, 8:57 PM CDT	Flash Flood Warning	FWD	Palo Pinto, Parker	4 hr
Mar 30, 9:09 PM CDT	Flash Flood Warning	FWD	Coryell, Lampasas	4 hr
Mar 30, 9:17 PM CDT	Severe Thunderstorm Warning	FWD	Hunt	43 min
Mar 30, 9:30 PM CDT	Severe Thunderstorm Warning	FWD	Fannin	46 min
Mar 30, 9:32 PM CDT	Special Weather Statement	FWD	Ellis, Hill	58 min
Mar 30, 9:35 PM CDT	Severe Thunderstorm Warning	FWD	Hunt, Kaufman, Rains, Van Zandt	55 min
Mar 30, 9:43 PM CDT	Flash Flood Warning	FWD	Kaufman	3 hr
Mar 30, 9:44 PM CDT	Severe Thunderstorm Warning	FWD	Delta, Hopkins, Lamar	61 min
Mar 30, 9:53 PM CDT	Flash Flood Warning	FWD	Hunt	3 hr
Mar 30, 10:02 PM CDT	Special Weather Statement	FWD	Navarro	58 min
Mar 30, 10:08 PM CDT	Special Weather Statement	FWD	Ellis, Navarro	37 min
Mar 30, 10:15 PM CDT	Flash Flood Warning	FWD	Rains, Van Zandt	3 hr
Mar 30, 10:20 PM CDT	Flash Flood Warning	FWD	Navarro	3 hr
Mar 30, 10:25 PM CDT	Special Weather Statement	FWD	Lampasas	35 min
Mar 30, 11:25 PM CDT	Flash Flood Warning	FWD	McLennan	3 hr
Mar 30, 11:37 PM CDT	Flash Flood Warning	FWD	Johnson, Somervell	3 hr
Mar 30, 11:54 PM CDT	Flash Flood Warning	FWD	Ellis, Hill	4 hr
Mar 31, 12:41 AM CDT	Flash Flood Warning	FWD	Kaufman	3 hr
Mar 31, 3:47 AM CDT	Special Weather Statement	FWD	Franklin, Hopkins	28 min
Mar 31, 4:01 AM CDT	Flash Flood Warning	FWD	Ellis, Kaufman	3 hr

Nearby

Flash Flood Warnings in Texas, 2007 Every flash flood warning in 2007

Sources

The product and its follow-ups from the Iowa Environmental Mesonet's archive of National Weather Service and Storm Prediction Center text; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.