Alert archive / Oklahoma / Tornado Warnings in 2010

Tornado Warning 63, NWS Norman, OK

May 19, 2010Garvin County, Stephens County, Oklahoma

NWS Norman, OK issued this tornado warning at May 19, 2010, 7:26 PM CDT for Garvin County, Stephens County, Oklahoma. It was in force for 49 min. 3 reports 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 19, 2010, 7:26 PM CDT (00:26 UTC)
Expired: May 19, 2010, 8:15 PM CDT
In force: 49 min
Issued by: NWS Norman, OK
Area: Storm-based polygon

Counties Garvin County, OK, Stephens County, OK

The radar

The Norman radar (KTLX), 85 km from the middle of the area, began a volume at 00:26 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
May 19, 7:50 PM CDT	HAIL 1	Foster, OK
May 19, 8:00 PM CDT	HAIL 1.75	Foster, OK
May 19, 8:10 PM CDT	HAIL 1.5	1 Sw Elmore City, OK

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

Did it verify

Not verified. The Iowa Environmental Mesonet's Cow found no qualifying storm report inside this tornado warning while it was in force. That is not proof nothing happened: reports are thin where few people live.

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 watch it was issued in

The SPC watch in force over the same counties when this warning went out.

Issued	Product	Office	Lasted
May 19, 2:06 PM CDT	Tornado Watch PDS	SPC	8 hr

The nearest sounding before it

Norman, OK (KOUN), launched 00:00Z, 0.4 hours before the alert went out and 69 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: 1598 J/kg
Mixed-layer CIN: -6 J/kg
Mixed-layer LCL: 954 m above ground
0-6 km bulk shear: 28 kt
0-1 km storm-relative helicity: 259 m²/s²
0-3 km storm-relative helicity: 410 m²/s²
Significant tornado parameter: 2.8
Supercell composite: 18.7

Open this sounding in Storm Lab

The text

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

368 
WFUS54 KOUN 200026
TOROUN
OKC049-137-200115-
/O.NEW.KOUN.TO.W.0063.100520T0026Z-100520T0115Z/

BULLETIN - EAS ACTIVATION REQUESTED
TORNADO WARNING
NATIONAL WEATHER SERVICE NORMAN OK
726 PM CDT WED MAY 19 2010

THE NATIONAL WEATHER SERVICE IN NORMAN HAS ISSUED A

* TORNADO WARNING FOR...
  WESTERN GARVIN COUNTY IN SOUTHERN OKLAHOMA...
  NORTHEASTERN STEPHENS COUNTY IN SOUTHERN OKLAHOMA...

* UNTIL 815 PM CDT

* AT 726 PM CDT...NATIONAL WEATHER SERVICE RADAR INDICATED A SEVERE
  THUNDERSTORM CAPABLE OF PRODUCING A TORNADO 7 MILES SOUTHEAST OF
  BRAY...MOVING EAST AT 25 MPH.

* LOCATIONS IN THE WARNING INCLUDE ANTIOCH...BRAY...ELMORE CITY...
  FOSTER AND PERNELL.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

TAKE COVER NOW. LEAVE MOBILE HOMES AND VEHICLES. IF POSSIBLE...MOVE
TO A BASEMENT OR STORM SHELTER. OTHERWISE MOVE TO AN INTERIOR ROOM OR
HALLWAY ON THE LOWEST FLOOR. STAY AWAY FROM WINDOWS AND OUTSIDE
WALLS.

&&

LAT...LON 3449 9780 3462 9786 3469 9771 3468 9768
      3470 9767 3484 9734 3454 9725
TIME...MOT...LOC 0026Z 251DEG 21KT 3457 9772

$$


..SPEG.

1 follow-up statement

509 
WWUS54 KOUN 200102
SVSOUN

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE NORMAN OK
802 PM CDT WED MAY 19 2010

OKC049-137-200115-
/O.CON.KOUN.TO.W.0063.000000T0000Z-100520T0115Z/
GARVIN OK-STEPHENS OK-
802 PM CDT WED MAY 19 2010

...A TORNADO WARNING REMAINS IN EFFECT UNTIL 815 PM CDT FOR EXTREME 
NORTHEASTERN STEPHENS AND WESTERN GARVIN COUNTIES...

AT 803 PM CDT...NATIONAL WEATHER SERVICE RADAR DETECTED A SEVERE
THUNDERSTORM CAPABLE OF PRODUCING A TORNADO 3 MILES SOUTHWEST OF
FOSTER...MOVING EAST AT 20 MPH.

* LOCATIONS IN THE WARNING INCLUDE ANTIOCH...ELMORE CITY...FOSTER AND
  PERNELL.

LAT...LON 3453 9757 3469 9765 3484 9734 3454 9725
TIME...MOT...LOC 0103Z 259DEG 19KT 3459 9751

$$


..SPEG.

What forecasters said that day

The local office's own words before this tornado 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 tornado warning went out at May 19, 2:11 PM CDT, 5 hours 15 minutes earlier.

Area forecast discussion, May 19, 2:11 PM CDT, 5 hours 15 minutes before

AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE NORMAN OK
211 PM CDT WED MAY 19 2010

.DISCUSSION...
ONLY MINOR CHANGES REQUIRED IN THE PACKAGE TODAY... AND WILL ISSUE
ZONES EARLY AS ATTENTION SHIFTS TO THE DEVELOPING SEVERE WEATHER
SITUATION THIS AFTERNOON. OUTFLOW BOUNDARY/WARM FRONT HAS SET UP
FROM NORTHWEST OKLAHOMA INTO CENTRAL AND SOUTHEAST OKLAHOMA FROM
THE MORNING CONVECTION. WINDS ARE VEERING ACROSS WEST CENTRAL AND
CENTRAL OKLAHOMA INDICATING THE DRYLINE IS TRYING TO SET UP
SOMEWHERE NEAR OR JUST EAST OF A KCSM TO KFDR LINE. SATELLITE HAS
SHOWN TOWERS DEVELOPING ACROSS THE WESTERN OKLAHOMA-TEXAS
PANHANDLE STATE LINE WITH LIGHT REFLECTIVITIES DEVELOPING NEAR THE
ANTELOPE HILLS. EXPECT STORMS TO INITIATE SOON WITH DEVELOPMENT
RELATIVELY QUICKLY INTO SEVERE THUNDERSTORMS. BACKED WINDS AND
ENHANCED LOW LEVEL SHEAR ALONG THE OUTFLOW BOUNDARY/WARM FRONT
WILL LEAD TO A ENHANCED TORNADO RISK. STORMS WILL LINGER INTO
EASTERN SECTIONS OF THE AREA TOMORROW. A DRIER PATTERN DEVELOPS
OVER THE AREA LATE THIS WEEK AND INTO EARLY NEXT WEEK... ALTHOUGH
SOME NEW MEDIUM RANGE MODELS SUGGEST THAT SOUTHWEST UPPER FLOW MAY
MOVE CLOSER TO THE AREA LATER IN THE EXTENDED WHICH MAY GIVE SOME
STORM CHANCES. WILL MONITOR THAT POSSIBILITY AS WE GO FORWARD.

&&

.PRELIMINARY POINT TEMPS/POPS...
OKLAHOMA CITY OK  61  80  59  87 /  60  30  10   0
HOBART OK         59  82  56  88 /  30  10  10   0
WICHITA FALLS TX  64  87  64  91 /  40  20  10   0
GAGE OK           54  76  49  87 /  30  10  10   0
PONCA CITY OK     57  74  54  82 /  70  30  10   0
DURANT OK         68  83  66  88 /  70  40  40   0

&&

.OUN WATCHES/WARNINGS/ADVISORIES...
OK...FLASH FLOOD WATCH THROUGH THURSDAY MORNING FOR OKZ004>013-015-
     017>020.

TX...NONE.
&&

Hazardous weather outlook, May 19, 11:40 AM CDT, 7 hours 46 minutes before

HAZARDOUS WEATHER OUTLOOK
NATIONAL WEATHER SERVICE NORMAN OK
1140 AM CDT WED MAY 19 2010

OKZ004>048-050>052-TXZ083>090-201100-
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-
1140 AM CDT WED MAY 19 2010

THIS HAZARDOUS WEATHER OUTLOOK COVERS NORTHERN...WESTERN...
CENTRAL...AND SOUTHERN OKLAHOMA...AND WESTERN NORTH TEXAS.

.DAY ONE...THROUGH TONIGHT...

THUNDERSTORM OUTLOOK...
THERE IS A HIGH RISK OF SEVERE THUNDERSTORMS THIS AFTERNOON AND
EVENING ACROSS CENTRAL AND PARTS OF SOUTHEAST OKLAHOMA. THE HIGH
RISK INCLUDES THE OKLAHOMA CITY METRO AREA AND SURROUNDING COUNTIES.
OTHERWISE...THERE IS A MODERATE RISK OF SEVERE THUNDERSTORMS THIS
AFTERNOON AND TONIGHT ACROSS THE WESTERN-TWO THIRDS OKLAHOMA. THERE
IS A SLIGHT RISK OF SEVERE THUNDERSTORMS IN WESTERN NORTH TEXAS.

LOCATION...
THE MOST DANGEROUS STORMS ARE EXPECTED TO OCCUR EAST OF A LINE FROM
STILLWATER...TO WATONGA...TO ANADARKO...TO TISHOMINGO.

TIMING...
ALTHOUGH SEVERE STORMS WILL BE POSSIBLE THROUGH 5 AM...THE MOST
LIKELY TIME FOR TORNADOES AND VERY LARGE DAMAGING HAIL WILL BE FROM
2 PM THROUGH MIDNIGHT.

IMPACTS...
STRONG TORNADOES...
LARGE HAIL TO 4 INCH DIAMETER...
DAMAGING THUNDERSTORM WIND GUSTS TO 75 MPH.

RECOMMENDED ACTIONS...
RESIDENTS OF OKLAHOMA AND NORTH TEXAS SHOULD ALSO CLOSELY MONITOR
THE WEATHER SITUATION THIS AFTERNOON AND EVENING... REVIEW SAFETY
PLANS AND BE PREPARED TO ACT IF SEVERE WEATHER APPROACHES.

STORM SPOTTER GROUPS AND EMERGENCY MANAGEMENT PERSONNEL ACROSS THE
AREA SHOULD CLOSELY MONITOR THE WEATHER THROUGHOUT THE DAY AND PLAN
FOR SEVERE WEATHER OPERATIONS FROM 2 PM UNTIL 5 AM.

DISCUSSION...
THE SEVERE WEATHER THREAT WILL INCREASE SIGNIFICANTLY THIS AFTERNOON
AS THE ATMOSPHERE BECOMES INCREASINGLY UNSTABLE. A WARM FRONT...
LOCATED ALONG INTERSTATE 40 ACROSS WESTERN INTO CENTRAL OKLAHOMA AND
THEN SOUTHEAST WILL CONTINUE TO LIFT NORTH... AND LOW-LEVEL MOISTURE
AND INSTABILITY WILL INCREASE SOUTH OF THIS WARM FRONT. MEANWHILE A
DRYLINE WILL DEVELOP BY THIS AFTERNOON ACROSS WESTERN OKLAHOMA AND
WESTERN NORTH TEXAS. OUTFLOW BOUNDARIES FROM THIS MORNINGS STORMS
WILL ALSO BE LOCATED ACROSS OKLAHOMA THIS AFTERNOON. THE ATMOSPHERE
ACROSS THE AREA WILL BECOME QUITE UNSTABLE... ESPECIALLY TO THE
SOUTH OF THE WARM FRONT AND EAST OF THE DRYLINE. ELEVATED
INSTABILITY NORTH OF THE WARM FRONT WILL ALSO BE SUFFICIENT TO
SUPPORT SEVERE THUNDERSTORMS.

THUNDERSTORMS ARE EXPECTED TO DEVELOP MID TO LATE AFTERNOON...
PRIMARILY NEAR THE DRYLINE AND POSSIBLY ALONG THE WARM FRONT.
THUNDERSTORMS WILL QUICKLY BECOME SEVERE WITH THE POTENTIAL OF LARGE
HAIL AND DAMAGING WINDS. LOW-LEVEL WIND SHEAR WILL BE SUFFICIENT FOR
THE DEVELOPMENT OF STRONG TORNADOES... ESPECIALLY NEAR THE WARM
FRONT AND ANY OUTFLOW BOUNDARIES. THUNDERSTORMS WILL BECOME MORE
NUMEROUS LATE THIS EVENING AND OVERNIGHT WITH THE PRIMARY SEVERE
WEATHER THREAT OF LARGE HAIL AND DAMAGING WINDS... ALTHOUGH ISOLATED
TORNADOES WILL STILL BE POSSIBLE. STORMS TODAY WILL GENERALLY MOVE
EAST-NORTHEAST AT AROUND 30 TO 40 MPH... WITH THE STRONGEST STORMS
MOVING EAST AT 25 TO 30 MPH.

CONTINUE TO CHECK WEATHER INFORMATION THROUGHOUT THE DAY FOR THE
LATEST UPDATES. ALSO REVIEW YOUR SEVERE WEATHER SAFETY PLAN BEFORE
THE SEVERE STORMS STRIKE.

PROBABILITY TABLE...
VALID THROUGH 700 AM CDT THURSDAY MAY 20.
PROBABILITY OF THUNDERSTORMS OCCURRING IN THE
              NWS NORMAN COUNTY WARNING AREA...100 PERCENT.
PROBABILITY OF SEVERE STORMS IF STORMS OCCUR...100 PERCENT.

OTHER HAZARDOUS WEATHER...
RAINFALL FROM EARLIER TODAY HAS INCREASED THE POTENTIAL FOR FLOODING
THIS AFTERNOON AND TONIGHT... ESPECIALLY ACROSS NORTHERN OKLAHOMA.
SEE THE FLASH FLOOD WATCH FOR ADDITIONAL INFORMATION.

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

THUNDERSTORM OUTLOOK...
THERE IS A SLIGHT RISK OF SEVERE THUNDERSTORMS EAST OF A LINE FROM
STILLWATER TO SHAWNEE TO SULPHUR. THUNDERSTORMS ARE EXPECTED TO BE
ONGOING BY SUNRISE IN THE EASTERN HALF OF OKLAHOMA. A MESOSCALE
SURFACE BOUNDARY ASSOCIATED WITH AN UPPER LEVEL TROUGH IS EXPECTED
TO DEFINE THE WESTERN EDGE OF THUNDERSTORMS. THE VERY HUMID AIRMASS
AND STRONG LOW-LEVEL JET EAST OF THIS BOUNDARY IS EXPECTED TO
SUPPORT SEVERE THUNDERSTORMS. DAMAGING WIND GUSTS AND LARGE HAIL ARE
EXPECTED IMPACTS.

OTHER HAZARDOUS WEATHER...
NONE.

THE NEXT SCHEDULED HAZARDOUS WEATHER OUTLOOK WILL BE AT 5 AM
THURSDAY MORNING.

26/30/16

In the hours before

Local storm report, May 19, 6:50 PM CDT, 36 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE NORMAN OK
650 PM CDT WED MAY 19 2010

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

0649 PM     HAIL             2 NW DUNCAN             34.52N 97.98W
05/19/2010  E1.00 INCH       STEPHENS           OK   AMATEUR RADIO

&&

AG

Local storm report, May 19, 6:58 PM CDT, 28 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE NORMAN OK
658 PM CDT WED MAY 19 2010

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

0658 PM     HAIL             1 NE DUNCAN             34.51N 97.94W
05/19/2010  E1.75 INCH       STEPHENS           OK   AMATEUR RADIO

&&

AG

Local storm report, May 19, 7:00 PM CDT, 26 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE NORMAN OK
700 PM CDT WED MAY 19 2010

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

0700 PM     HAIL             1 NW NORMAN             35.23N 97.45W
05/19/2010  E1.00 INCH       CLEVELAND          OK   AMATEUR RADIO

&&

AG

Local storm report, May 19, 7:02 PM CDT, 24 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE NORMAN OK
702 PM CDT WED MAY 19 2010

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

0701 PM     TSTM WND GST     1 NW NORMAN             35.23N 97.45W
05/19/2010  M58 MPH          CLEVELAND          OK   AMATEUR RADIO

&&

AG

Local storm report, May 19, 7:13 PM CDT, 13 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE NORMAN OK
713 PM CDT WED MAY 19 2010

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

0704 PM     HAIL             2 S CRESCENT            35.92N 97.59W
05/19/2010  E2.75 INCH       LOGAN              OK   PUBLIC

&&

AG

Local storm report, May 19, 7:26 PM CDT, 0 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE NORMAN OK
726 PM CDT WED MAY 19 2010

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

0722 PM     HAIL             3 S GOLDSBY             35.10N 97.48W
05/19/2010  E2.75 INCH       MCCLAIN            OK   STORM CHASER

&&

AG

The office that day

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

Issued	Product	Office	Counties	Lasted
May 19, 7:02 PM CDT	Severe Thunderstorm Warning	OUN	Harper, Woods, Woodward	58 min
May 19, 7:08 PM CDT	Tornado Warning	OUN	Lincoln, Oklahoma, Pottawatomie	52 min
May 19, 7:29 PM CDT	Severe Thunderstorm Warning	OUN	Payne	61 min
May 19, 7:32 PM CDT	Tornado Warning	OUN	Cleveland, McClain, Pottawatomie	43 min
May 19, 7:42 PM CDT	Tornado Warning	OUN	Lincoln	42 min
May 19, 7:45 PM CDT	Severe Thunderstorm Warning	OUN	Logan	45 min
May 19, 7:45 PM CDT	Severe Thunderstorm Warning	OUN	Cleveland, Pottawatomie, Seminole	45 min
May 19, 7:53 PM CDT	Severe Thunderstorm Warning	OUN	Major, Woods, Woodward	67 min
May 19, 8:11 PM CDT	Severe Thunderstorm Warning	OUN	Garvin, Murray	64 min
May 19, 8:15 PM CDT	Severe Thunderstorm Warning	OUN	Pottawatomie, Seminole	45 min
May 19, 8:15 PM CDT	Tornado Warning	OUN	Lincoln	30 min
May 19, 8:17 PM CDT	Areal Flood Advisory	OUN	Lincoln, Logan, Payne	3 hr
May 19, 8:29 PM CDT	Severe Thunderstorm Warning	OUN	Pottawatomie, Seminole	46 min
May 19, 8:33 PM CDT	Tornado Warning	OUN	Garvin, Murray, Pontotoc	42 min
May 19, 8:59 PM CDT	Severe Thunderstorm Warning	OUN	Hughes, Pottawatomie, Seminole	61 min
May 19, 9:10 PM CDT	Tornado Warning	OUN	Garvin, Murray, Pontotoc	65 min
May 19, 10:04 PM CDT	Severe Thunderstorm Warning	OUN	Hughes, Lincoln, Pottawatomie, Seminole	56 min
May 19, 10:07 PM CDT	Severe Thunderstorm Warning	OUN	Coal, Hughes, Pontotoc	53 min
May 19, 10:56 PM CDT	Severe Thunderstorm Warning	OUN	Atoka, Coal, Hughes, Pontotoc	64 min
May 19, 11:51 PM CDT	Areal Flood Advisory	OUN	Pottawatomie, Seminole	3 hr
May 19, 11:59 PM CDT	Severe Thunderstorm Warning	OUN	Atoka	46 min
May 20, 12:02 AM CDT	Severe Thunderstorm Warning	OUN	McClain, Pottawatomie, Seminole	43 min
May 20, 1:33 AM CDT	Dense Fog Advisory	OUN	Alfalfa, Blaine, Caddo, Canadian, Cleveland, Garfield and 13 more	6 hr
May 20, 1:41 AM CDT	Severe Thunderstorm Warning	OUN	Hughes	49 min
May 20, 1:55 AM CDT	Severe Thunderstorm Warning	OUN	Coal, Hughes, Pontotoc, Seminole	50 min
May 20, 2:45 AM CDT	Severe Thunderstorm Warning	OUN	Atoka, Coal, Pontotoc	60 min
May 20, 2:53 AM CDT	Severe Thunderstorm Warning	OUN	Atoka	67 min
May 20, 3:18 AM CDT	Areal Flood Advisory	OUN	Atoka, Coal, Hughes, Pontotoc	3 hr
May 20, 3:53 AM CDT	Areal Flood Warning	OUN	Coal, Hughes, Pontotoc	6 hr
May 20, 4:18 AM CDT	Areal Flood Advisory	OUN	Johnston, Murray, Pontotoc	3 hr
May 20, 4:25 AM CDT	Severe Thunderstorm Warning	OUN	Atoka, Coal, Johnston, Murray, Pontotoc	65 min
May 20, 5:44 AM CDT	Areal Flood Advisory	OUN	Atoka, Johnston	3 hr
May 20, 6:37 AM CDT	Areal Flood Advisory	OUN	Atoka	113 min
May 20, 8:47 AM CDT	Areal Flood Warning	OUN	Atoka, Bryan, Johnston	6 hr
May 20, 10:04 AM CDT	River Flood Warning	OUN	Atoka, Bryan	71 hr
May 20, 2:17 PM CDT	River Flood Warning	OUN	Logan, Payne	14 hr

Nearby

Tornado Warnings in Oklahoma, 2010 Every tornado warning in 2010 Tornadoes 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; local storm reports from the same archive; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.