Alert archive / Texas / Flash Flood Warnings in 2010

Flash Flood Warning 27, NWS Norman, OK

July 8, 2010Baylor County, Knox County, Texas

NWS Norman, OK issued this flash flood warning at Jul 8, 2010, 11:41 AM CDT for Baylor County, Knox County, Texas. It was in force for 4 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: Jul 8, 2010, 11:41 AM CDT (16:41 UTC)
Expired: Jul 8, 2010, 3:45 PM CDT
In force: 4 hr
Issued by: NWS Norman, OK
Area: Storm-based polygon
Flood severity: None

Counties Baylor County, TX, Knox County, TX

The radar

The Altus AFB radar (KFDR), 95 km from the middle of the area, began a volume at 16:43 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

Norman, OK (KOUN), launched 12:00Z, 4.7 hours before the alert went out and 261 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: 929 J/kg
Mixed-layer CIN: 0 J/kg
Mixed-layer LCL: 489 m above ground
0-6 km bulk shear: 28 kt
0-1 km storm-relative helicity: -26 m²/s²
0-3 km storm-relative helicity: 20 m²/s²
Significant tornado parameter: -0.0
Supercell composite: -0.2

Open this sounding in Storm Lab

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 Norman, OK wrote its last area forecast discussion before this flash flood warning went out at Jul 8, 4:17 AM CDT, 7 hours 24 minutes earlier.

Area forecast discussion, Jul 8, 4:17 AM CDT, 7 hours 24 minutes before

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Hazardous weather outlook, Jul 8, 4:55 AM CDT, 6 hours 46 minutes before

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In the hours before

Special weather statement, Jul 8, 5:42 AM CDT, 5 hours 59 minutes before

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Special weather statement, Jul 8, 5:49 AM CDT, 5 hours 52 minutes before

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE NORMAN OK
549 AM CDT THU JUL 8 2010

OKZ035-036-081115-
JACKSON OK-KIOWA OK-
549 AM CDT THU JUL 8 2010

...SIGNIFICANT WEATHER ADVISORY...

THIS SIGNIFICANT WEATHER ADVISORY IS FOR NORTHEAST JACKSON AND
WESTERN KIOWA COUNTIES.

AT 546 AM CDT...SHOWERS AND ISOLATED THUNDERSTORMS EXTENDING FROM
LONE WOLF TO JUST WEST OF SNYDER WERE PRODUCING MODERATE TO HEAVY
RAINFALL RATES UP TO NEAR ONE INCH PER HOUR. THE ACTIVITY WAS
SHOWING LITTLE MOVEMENT.

HAZARDS INCLUDE...
MINOR FLOODING IN AREAS OF POOR DRAINAGE...

LAT...LON 3506 9913 3460 9892 3461 9900 3464 9900
      3464 9908 3462 9908 3464 9921 3481 9928
      3482 9924 3485 9930 3489 9932 3490 9929
      3492 9929 3496 9933 3499 9933

CJS

Special weather statement, Jul 8, 5:52 AM CDT, 5 hours 49 minutes before

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE NORMAN OK
552 AM CDT THU JUL 8 2010

TXZ083-084-081115-
HARDEMAN TX-FOARD TX-
552 AM CDT THU JUL 8 2010

...SIGNIFICANT WEATHER ADVISORY...

THIS SIGNIFICANT WEATHER ADVISORY IS FOR NORTHERN FOARD AND HARDEMAN
COUNTIES.

AT 550 AM CDT...SHOWERS AND ISOLATED THUNDERSTORMS OVER HARDEMAN AND
NORTHERN FOARD COUNTIES... INCLUDING THE QUANAH AREA... WERE
PRODUCING MODERATE TO HEAVY RAINFALL RATES UP TO ONE INCH PER HOUR.
THE ACTIVITY WAS MOVING SLOWLY TO THE NORTH.

HAZARDS INCLUDE...
MINOR FLOODING IN AREAS OF POOR DRAINAGE...

LAT...LON 3424 10002 3426 10000 3434 10001 3449 9998
      3429 9957 3398 9966 3402 10006

CJS

Special weather statement, Jul 8, 6:31 AM CDT, 5 hours 10 minutes before

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Local storm report, Jul 8, 10:46 AM CDT, 55 minutes before

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The office that day

Everything else NWS Norman, OK issued on the same UTC day.

Issued	Product	Office	Counties	Lasted
Jul 8, 3:58 AM CDT	River Flood Warning	OUN	Greer, Jackson	10 hr
Jul 8, 8:38 AM CDT	Flash Flood Warning	OUN	Greer, Harmon	3 hr
Jul 8, 9:34 AM CDT	Areal Flood Advisory	OUN	Beckham, Ellis, Roger Mills	3 hr
Jul 8, 12:31 PM CDT	Areal Flood Advisory	OUN	Carter, Johnston, Love, Marshall	3 hr
Jul 8, 1:16 PM CDT	Areal Flood Warning	OUN	Beckham, Roger Mills	6 hr
Jul 8, 3:05 PM CDT	Areal Flood Advisory	OUN	Grady, McClain	3 hr
Jul 8, 4:39 PM CDT	Areal Flood Advisory	OUN	Comanche, Cotton, Jefferson, Stephens	3 hr
Jul 8, 5:05 PM CDT	Areal Flood Advisory	OUN	Cleveland, Garvin, McClain, Pontotoc, Pottawatomie, Seminole	3 hr
Jul 8, 5:36 PM CDT	Areal Flood Advisory	OUN	Cleveland, Grady, Lincoln, Logan, McClain, Oklahoma and 2 more	3 hr
Jul 8, 5:50 PM CDT	Flash Flood Warning	OUN	Cleveland, Grady, McClain, Oklahoma	4 hr
Jul 8, 6:05 PM CDT	Areal Flood Advisory	OUN	Lincoln, Payne	3 hr
Jul 7, 7:28 PM CDT	Areal Flood Advisory	OUN	Archer, Baylor, Foard, Knox	3 hr
Jul 8, 8:03 AM CDT	Areal Flood Advisory	OUN	Foard, Hardeman, Knox	3 hr
Jul 8, 8:24 AM CDT	Flash Flood Warning	OUN	Foard, Hardeman	4 hr
Jul 8, 8:53 AM CDT	Flash Flood Warning	OUN	Knox	3 hr
Jul 8, 9:16 AM CDT	Areal Flood Advisory	OUN	Baylor	3 hr
Jul 8, 12:19 PM CDT	Areal Flood Warning	OUN	Baylor, Foard, Hardeman, Knox, Wilbarger	6 hr

Nearby

Flash Flood Warnings in Texas, 2010 Every flash flood warning in 2010

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.