Alert archive / Texas / Flash Flood Warnings in 2015

Flash Flood Warning 8, NWS Norman, OK

May 6, 20156 counties in Texas

NWS Norman, OK issued this flash flood warning at May 6, 2015, 10:40 PM CDT for 6 counties in Texas. It was in force for 3 hr. 1 report came from inside the area while it was in force.

The area

The outline as issued, with what was reported inside it.

The facts

Issued: May 6, 2015, 10:40 PM CDT (03:40 UTC)
Expired: May 7, 2015, 1:45 AM CDT
In force: 3 hr
Issued by: NWS Norman, OK
Area: Storm-based polygon
Flood severity: None

Counties Archer County, TX, Baylor County, TX, Clay County, TX, Foard County, TX, Knox County, TX, Wichita County, TX

The radar

The Altus AFB radar (KFDR), 91 km from the middle of the area, began a volume at 03:40 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.

What was reported inside it

Time	Report	Where	Remark
May 6, 11:45 PM CDT	FLASH FLOOD	Archer City, TX	STREETS IN AND AROUND ARCHER CITY FLOODED. SIGNIFICANT GRAVEL REMOVAL ON RURAL ROADS OFF HIGHWAY 79.

Local storm reports filed while the alert was in force, from inside its polygon or its counties.

Did it verify

Verified. The Iowa Environmental Mesonet's Cow matched one storm report to this flash flood warning; the first came 65 minutes after it went out.

Cow counts a report within 15 km of the polygon while the warning was in force: a tornado for a tornado warning; hail of 1 inch or more, a gust of 58 mph or more or wind damage for a severe thunderstorm warning; a flash flood report for a flash flood warning.

The nearest sounding before it

Fort Worth, TX (KFWD), launched 00:00Z, 3.7 hours before the alert went out and 170 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: 1584 J/kg
Mixed-layer CIN: -18 J/kg
Mixed-layer LCL: 1221 m above ground
0-6 km bulk shear: 30 kt
0-1 km storm-relative helicity: 115 m²/s²
0-3 km storm-relative helicity: 147 m²/s²
Significant tornado parameter: 0.7
Supercell composite: 7.7

Open this sounding in Storm Lab

The text

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

787 
WGUS54 KOUN 070340
FFWOUN
TXC009-023-077-155-275-485-070645-
/O.NEW.KOUN.FF.W.0008.150507T0340Z-150507T0645Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/

BULLETIN - EAS ACTIVATION REQUESTED
FLASH FLOOD WARNING
NATIONAL WEATHER SERVICE NORMAN OK
1040 PM CDT WED MAY 6 2015

THE NATIONAL WEATHER SERVICE IN NORMAN HAS ISSUED A

* FLASH FLOOD WARNING FOR...
  BAYLOR COUNTY IN NORTHERN TEXAS...
  KNOX COUNTY IN NORTHERN TEXAS...
  ARCHER COUNTY IN NORTHERN TEXAS...
  SOUTHEASTERN WICHITA COUNTY IN NORTHERN TEXAS...
  CLAY COUNTY IN NORTHERN TEXAS...
  SOUTHEASTERN FOARD COUNTY IN NORTHERN TEXAS...

* UNTIL 145 AM CDT
    
* AT 1038 PM CDT...DOPPLER RADAR INDICATED NUMEROUS THUNDERSTORMS 
  PRODUCING HEAVY RAIN FROM NEAR BENJAMIN TO SEYMOUR TO SOUTH OF 
  HENRIETTA. ONE TO FIVE INCHES OF RAIN HAVE FALLEN SINCE 7 PM THIS 
  EVENING.

* SOME LOCATIONS THAT WILL EXPERIENCE FLOODING INCLUDE...
  SOUTHERN WICHITA FALLS...HENRIETTA...SEYMOUR...ARCHER CITY...
  MUNDAY...BENJAMIN...HOLLIDAY...SCOTLAND...WINDTHORST...BELLEVUE...
  MEGARGEL...GOREE...TRUSCOTT...MANKINS...RED SPRINGS...VERA...
  NEWPORT...LAKE KEMP...LAKE DIVERSION AND LAKE KICKAPOO.

ADDITIONAL RAINFALL AMOUNTS OF 1 TO 4 INCHES IS LIKELY IN THE WARNED 
AREA.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

MOVE TO HIGHER GROUND NOW. ACT QUICKLY TO PROTECT YOUR LIFE.

BE ESPECIALLY CAUTIOUS AT NIGHT WHEN IT IS HARDER TO RECOGNIZE THE
DANGERS OF FLOODING.

STAY AWAY OR BE SWEPT AWAY. RIVER BANKS AND CULVERTS CAN BECOME
UNSTABLE AND UNSAFE.

&&

LAT...LON 3341 9978 3380 9994 3386 9798 3347 9798
      3347 9842 3340 9842

$$

MBS

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 May 6, 7:00 PM CDT, 3 hours 40 minutes earlier.

Area forecast discussion, May 6, 7:00 PM CDT, 3 hours 40 minutes before

AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE NORMAN OK
700 PM CDT WED MAY 6 2015

.DISCUSSION...
THE 00Z AVIATION DISCUSSION FOLLOWS....

&&

.AVIATION...
00Z TAFS WERE DELAYED SLIGHTLY BY SOFTWARE ISSUES. CONFIDENCE IN
TIMING OF WEATHER ELEMENTS REMAINS POOR BEYOND A FEW HOURS.
SCATTERED STRONG/SEVERE TSRA WILL CONTINUE THIS EVENING...POSSIBLY
AFFECTING KOKC...KSPS WITHIN THE NEXT FEW HOURS. TSRA MAY CONTINUE
OFF AND ON ALL NIGHT...BUT PREDICTABILITY DOES NOT WARRANT
INCLUSION IN TAFS. MODELS CONTINUE TO INSIST ON LOW MVFR OR IFR
CEILINGS TOMORROW MORNING...WHICH SEEMS POSSIBLE WITH THE EFFECTS
OF THE STORMS. DIURNAL LIFTING OF THE CEILINGS MAY BE SLOWER
TOMORROW THAN TODAY...DELAYING THE ONSET OF VFR OR MVFR
CONDITIONS. THERE IS A NEARLY EQUAL CHANCE OF TSRA EVERYWHERE
DURING THE ENTIRE DAY TOMORROW...BUT HAVE LIMITED MENTION IN TAFS
TO THE MOST CLIMATOLOGICALLY FAVORED TIMES.

CMS
&&

.PREV DISCUSSION... /ISSUED 327 PM CDT WED MAY 6 2015/

DISCUSSION...
A FEW SEVERE STORMS HAVE ALREADY DEVELOPED IN THE MINIMALLY-CAPPED
UNSTABLE/HIGH-SHEAR ATMOSPHERE THAT IS OVER MUCH OF OUR FORECAST
AREA. WE EXPECT A FEW SEVERE STORMS TO CONTINUE THROUGH THE
EVENING....MAINLY IN THE FORM OF ISOLATED SUPERCELLS. UNLIKE LAST
NIGHT...NO ORGANIZED REGION OF HEAVY RAIN IS EXPECTED TONIGHT.
SOME STORMS MAY PERSIST PAST MIDNIGHT...BUT THEY WILL LIKELY
REMAIN SCATTERED...AND NOT AN ORGANIZED COMPLEX.

THE CHANCE FOR RAIN...INCLUDING STRONG/SEVERE STORMS...WILL
PERSIST THROUGH THE REMAINDER OF THE WEEK AND WEEKEND. THERE IS
VERY LITTLE CHANGE TO PREVIOUS THINKING ABOUT EACH DAY...WITH A
LOWER RISK OF SEVERE WEATHER ON THURSDAY...SOMEWHAT HIGHER ON
FRIDAY...MUCH HIGHER ON SATURDAY...AND DIMINISHING FROM WEST TO
EAST ON SUNDAY.

EARLY NEXT WEEK SHOULD BE A COOL AND QUIET PERIOD...FOR A COUPLE
OF DAYS...AT LEAST. MOISTURE AND RAIN CHANCES RISE AGAIN MIDWEEK.

&&

.PRELIMINARY POINT TEMPS/POPS...
OKLAHOMA CITY OK  64  77  64  79 /  50  50  60  50
HOBART OK         62  77  64  79 /  50  50  60  50
WICHITA FALLS TX  64  79  66  79 /  60  50  50  50
GAGE OK           62  80  59  80 /  20  40  60  50
PONCA CITY OK     66  79  63  80 /  40  40  70  50
DURANT OK         65  79  67  80 /  40  40  40  40

&&

.OUN WATCHES/WARNINGS/ADVISORIES...
OK...NONE.
TX...NONE.
&&

17/26/23

Hazardous weather outlook, May 6, 3:28 PM CDT, 7 hours 12 minutes before

HAZARDOUS WEATHER OUTLOOK...UPDATED
NATIONAL WEATHER SERVICE NORMAN OK
328 PM CDT WED MAY 6 2015

OKZ004>048-050>052-TXZ083>090-072030-
HARPER-WOODS-ALFALFA-GRANT-KAY-ELLIS-WOODWARD-MAJOR-GARFIELD-
NOBLE-ROGER MILLS-DEWEY-CUSTER-BLAINE-KINGFISHER-LOGAN-PAYNE-
BECKHAM-WASHITA-CADDO-CANADIAN-OKLAHOMA-LINCOLN-GRADY-MCCLAIN-
CLEVELAND-POTTAWATOMIE-SEMINOLE-HUGHES-HARMON-GREER-KIOWA-JACKSON-
TILLMAN-COMANCHE-STEPHENS-GARVIN-MURRAY-PONTOTOC-COAL-COTTON-
JEFFERSON-CARTER-JOHNSTON-ATOKA-LOVE-MARSHALL-BRYAN-HARDEMAN-
FOARD-WILBARGER-WICHITA-KNOX-BAYLOR-ARCHER-CLAY-
328 PM CDT WED MAY 6 2015

THIS HAZARDOUS WEATHER OUTLOOK IS FOR PORTIONS OF NORTHERN...
WESTERN...CENTRAL...AND SOUTHERN OKLAHOMA...AND WESTERN NORTH
TEXAS.

.DAY ONE...REST OF THIS AFTERNOON AND TONIGHT...

.THUNDERSTORMS...
THERE IS AN ENHANCED RISK OF SEVERE THUNDERSTORMS ACROSS PARTS OF
WESTERN AND CENTRAL OKLAHOMA AND WESTERN NORTH TEXAS.

LOCATION...
THE ENHANCED RISK AREA IS GENERALLY ALONG AND EAST OF A LINE FROM
FREEDOM AND CLINTON... TO ALTUS OKLAHOMA AND BENJAMIN TEXAS... AND
THEN WEST OF A LINE FROM PONCA CITY AND STILLWATER... TO SHAWNEE
AND SULPHUR... TO ARDMORE OKLAHOMA. THIS INCLUDES PLACES SUCH AS
ENID... THE OKLAHOMA CITY METRO... LAWTON... AND WICHITA FALLS.

TIMING...
THROUGH MIDNIGHT

IMPACTS...
HAIL UP TO THE SIZE OF BASEBALLS...
WIND GUSTS OF 60 TO 70 MPH...
A FEW TORNADOES...
LOCALLY HEAVY RAINFALL WHICH COULD CAUSE SOME FLOODING...

.SPOTTER AND EMERGENCY MANAGEMENT STATEMENT...

STORM SPOTTER GROUPS AND EMERGENCY MANAGEMENT PERSONNEL IN THE
RISK AREAS SHOULD BE READY FOR SEVERE WEATHER OPERATIONS.

DISCUSSION...
A FEW THUNDERSTORMS WILL DEVELOP AND MOVE ACROSS PARTS OF OKLAHOMA
AND WESTERN NORTH TEXAS. EVEN THOUGH THERE MAY ONLY BE A FEW
STORMS... ANY STORM THAT DEVELOPS WILL BE SEVERE DUE TO HIGH
INSTABILITY AND STRONG WIND SHEAR. VERY LARGE HAIL... DAMAGING
WIND GUSTS... AND TORNADOES WILL BE POSSIBLE. THUNDERSTORM
INTENSITY IS EXPECTED TO GRADUALLY WEAKEN DURING THE OVERNIGHT
HOURS...BUT STORMS MAY STILL PRODUCE LOCALLY HEAVY RAINFALL AND
SOME HAIL.

.DAYS TWO THROUGH SEVEN...THURSDAY THROUGH TUESDAY...

.THUNDERSTORMS...
A VERY ACTIVE WEATHER PATTERN WILL REMAIN IN PLACE THROUGH AT
LEAST SUNDAY. SEVERE STORMS WILL BE POSSIBLE EACH DAY...ESPECIALLY
DURING THE MID AFTERNOON INTO THE LATE EVENING. AT THIS
TIME...SATURDAY MAY HAVE THE GREATEST POTENTIAL FOR SEVERE WEATHER
AS A STRONG STORM SYSTEM APPROACHES THE SOUTHERN PLAINS.

GET GRAPHICS AND MORE DETAILS AT WEATHER.GOV/NORMAN...AND FOLLOW
OUR WEATHER FORECAST OFFICE ON TWITTER AND FACEBOOK.

In the hours before

Local storm report, May 6, 8:30 PM CDT, 2 hours 10 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE NORMAN OK
830 PM CDT WED MAY 06 2015

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

0828 PM     HAIL             5 E TUTTLE              35.29N 97.72W
05/06/2015  E1.75 INCH       GRADY              OK   TRAINED SPOTTER

&&

FM

Local storm report, May 6, 8:51 PM CDT, 1 hour 49 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE NORMAN OK
851 PM CDT WED MAY 06 2015

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

0847 PM     TORNADO          3 SSE OKLAHOMA CITY     35.43N 97.49W
05/06/2015                   OKLAHOMA           OK   AMATEUR RADIO

            OVERTURNED VEHICLES AND DOWNED POWER LINES AT THE
            INTERSECTION OF I-35 AND SW 44TH

&&

FM

Local storm report, May 6, 8:53 PM CDT, 1 hour 47 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE NORMAN OK
853 PM CDT WED MAY 06 2015

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

0848 PM     TSTM WND GST     5 S MUSTANG             35.32N 97.72W
05/06/2015  M76 MPH          GRADY              OK   TRAINED SPOTTER

            WIND WAS FROM A NORTHWEST DIRECTION.

&&

FM

Local storm report, May 6, 9:37 PM CDT, 1 hour 3 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE NORMAN OK
937 PM CDT WED MAY 06 2015

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

0900 PM     HAIL             2 SSE NORMAN            35.20N 97.43W
05/06/2015  M2.00 INCH       CLEVELAND          OK   TRAINED SPOTTER

&&

JTK

Local storm report, May 6, 9:49 PM CDT, 51 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE NORMAN OK
949 PM CDT WED MAY 06 2015

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

0915 PM     HAIL             2 E NORMAN              35.22N 97.41W
05/06/2015  E1.50 INCH       CLEVELAND          OK   PUBLIC

            MEASURED AT 24TH AND ALAMEDA

&&

MBS

Local storm report, May 6, 10:32 PM CDT, 8 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE NORMAN OK
1032 PM CDT WED MAY 06 2015

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

0745 PM     HAIL             HEADRICK                34.63N 99.14W
05/06/2015  E1.25 INCH       JACKSON            OK   PUBLIC

0900 PM     HAIL             2 S NORMAN              35.19N 97.44W
05/06/2015  E2.00 INCH       CLEVELAND          OK   TRAINED SPOTTER

0906 PM     HAIL             1 SE NORMAN             35.21N 97.43W
05/06/2015  E1.75 INCH       CLEVELAND          OK   TRAINED SPOTTER

0915 PM     HAIL             2 E NORMAN              35.22N 97.41W
05/06/2015  E1.50 INCH       CLEVELAND          OK   TRAINED SPOTTER

0925 PM     HAIL             6 ENE NORMAN            35.25N 97.34W
05/06/2015  E1.00 INCH       CLEVELAND          OK   TRAINED SPOTTER

&&

FM

The office that day

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

Issued	Product	Office	Counties	Lasted
May 6, 7:00 PM CDT	Severe Thunderstorm Warning	OUN	Clay, Wichita	45 min
May 6, 7:27 PM CDT	Severe Thunderstorm Warning	OUN	Foard, Wilbarger	48 min
May 6, 7:32 PM CDT	Severe Thunderstorm Warning	OUN	Archer, Baylor, Wichita, Wilbarger	43 min
May 6, 7:35 PM CDT	Severe Thunderstorm Warning	OUN	Clay, Wichita	40 min
May 6, 8:02 PM CDT	Severe Thunderstorm Warning	OUN	Baylor, Foard, Knox	43 min
May 6, 8:07 PM CDT	Tornado Warning	OUN	Archer	23 min
May 6, 8:29 PM CDT	Tornado Warning	OUN	Archer	31 min
May 6, 8:36 PM CDT	Severe Thunderstorm Warning	OUN	Hardeman, Wilbarger	39 min
May 6, 8:54 PM CDT	Severe Thunderstorm Warning	OUN	Baylor, Foard, Hardeman, Knox, Wilbarger	51 min
May 6, 8:57 PM CDT	Tornado Warning	OUN	Archer, Wichita	48 min
May 6, 10:05 PM CDT	Severe Thunderstorm Warning	OUN	Archer, Clay	40 min
May 6, 10:25 PM CDT	Severe Thunderstorm Warning	OUN	Knox	50 min
May 6, 10:34 PM CDT	Tornado Warning	OUN	Clay	26 min
May 6, 10:53 PM CDT	Severe Thunderstorm Warning	OUN	Archer, Baylor	52 min
May 6, 10:58 PM CDT	Tornado Warning	OUN	Clay	32 min
May 6, 11:00 PM CDT	Severe Thunderstorm Warning	OUN	Foard, Hardeman, Knox, Wilbarger	45 min
May 6, 11:03 PM CDT	Severe Thunderstorm Warning	OUN	Baylor, Foard, Knox, Wilbarger	42 min
May 6, 11:26 PM CDT	Tornado Warning	OUN	Archer, Baylor	16 min
May 6, 11:40 PM CDT	Severe Thunderstorm Warning	OUN	Archer, Baylor, Wichita, Wilbarger	50 min
May 6, 11:55 PM CDT	Severe Thunderstorm Warning	OUN	Clay	50 min
May 7, 12:10 AM CDT	Severe Thunderstorm Warning	OUN	Foard, Hardeman, Wilbarger	50 min
May 7, 12:21 AM CDT	Severe Thunderstorm Warning	OUN	Archer, Baylor, Wichita, Wilbarger	39 min
May 7, 12:52 AM CDT	Severe Thunderstorm Warning	OUN	Wilbarger	38 min
May 7, 12:56 AM CDT	Severe Thunderstorm Warning	OUN	Archer	31 min
May 7, 1:26 AM CDT	Severe Thunderstorm Warning	OUN	Wichita, Wilbarger	49 min
May 7, 11:30 AM CDT	Severe Thunderstorm Warning	OUN	Hardeman	30 min
May 7, 11:54 AM CDT	Flood Watch	OUN	Archer, Baylor, Clay, Foard, Hardeman, Knox and 2 more	3 days
May 7, 12:08 PM CDT	Special Weather Statement	OUN	Hardeman	37 min
May 7, 12:18 PM CDT	Severe Thunderstorm Warning	OUN	Hardeman	42 min
May 7, 1:05 PM CDT	Areal Flood Advisory	OUN	Hardeman	3 hr
May 7, 1:34 PM CDT	Special Weather Statement	OUN	Hardeman	26 min
May 7, 2:09 PM CDT	Severe Thunderstorm Warning	OUN	Hardeman, Wilbarger	40 min
May 7, 2:17 PM CDT	Special Weather Statement	OUN	Baylor, Foard, Knox	28 min
May 7, 2:22 PM CDT	Severe Thunderstorm Warning	OUN	Foard, Hardeman	38 min
May 7, 2:31 PM CDT	Severe Thunderstorm Warning	OUN	Baylor	44 min
May 7, 3:05 PM CDT	Severe Thunderstorm Warning	OUN	Archer, Baylor, Foard, Knox, Wichita, Wilbarger	40 min
May 7, 3:39 PM CDT	Severe Thunderstorm Warning	OUN	Archer, Baylor, Wichita, Wilbarger	51 min
May 7, 4:10 PM CDT	Severe Thunderstorm Warning	OUN	Archer, Clay, Wichita	50 min
May 7, 4:16 PM CDT	Flash Flood Warning	OUN	Archer, Baylor, Clay, Wichita, Wilbarger	3 hr
May 7, 4:21 PM CDT	Severe Thunderstorm Warning	OUN	Archer, Clay	39 min
May 7, 4:49 PM CDT	Severe Thunderstorm Warning	OUN	Archer, Clay	56 min
May 7, 5:45 PM CDT	Severe Thunderstorm Warning	OUN	Clay	22 min
May 7, 5:46 PM CDT	Special Weather Statement	OUN	Baylor	44 min

Nearby

Flash Flood Warnings in Texas, 2015 Every flash flood warning in 2015

Sources

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