Alert archive / Oklahoma / Flash Flood Warnings in 2015
Flash Flood Warning 115, NWS Norman, OK
NWS Norman, OK issued this flash flood warning at Jun 21, 2015, 11:00 AM CDT for Bryan County, Oklahoma. It was in force for 6 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
- Jun 21, 2015, 11:00 AM CDT (16:00 UTC)
- Expired
- Jun 21, 2015, 5:00 PM CDT
- In force
- 6 hr
- Issued by
- NWS Norman, OK
- Area
- Storm-based polygon
- Flood severity
- None
County Bryan County, OK
The radar
The Norman radar (KTLX), 179 km from the middle of the area, began a volume at 16:02 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 12:00Z, 4.0 hours before the alert went out and 158 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.
- Mixed-layer CAPE
- 1272 J/kg
- Mixed-layer CIN
- -33 J/kg
- Mixed-layer LCL
- 661 m above ground
- 0-6 km bulk shear
- 20 kt
- 0-1 km storm-relative helicity
- -108 m²/s²
- 0-3 km storm-relative helicity
- 22 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- -0.0
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 Jun 21, 6:33 AM CDT, 4 hours 27 minutes earlier.
Area forecast discussion, Jun 21, 6:33 AM CDT, 4 hours 27 minutes before
AREA FORECAST DISCUSSION NATIONAL WEATHER SERVICE NORMAN OK 633 AM CDT SUN JUN 21 2015 .DISCUSSION... 21/12Z TAF DISC BELOW. && .AVIATION... VFR CONDITIONS EXPECTED WITH GUSTY S/SW WINDS ACROSS TERMINALS. SOME LOW CLOUD DEVELOPMENT ACROSS WESTERN NORTH TEXAS INTO SOUTHWEST OKLAHOMA CANNOT BE RULED OUT EARLY THIS MORNING...BUT CONFIDENCE TOO LOW TO MENTION IN FORECAST. WILL INCLUDE SCT-BKN VFR CU 16-00Z ALL BUT FAR WEST AND NORTHERN OKLAHOMA TERMINALS. && .PREV DISCUSSION... /ISSUED 421 AM CDT SUN JUN 21 2015/ DISCUSSION... SCATTERED TO NUMEROUS SHOWERS...ALONG WITH A FEW WEAK STORMS... POSSIBLE MAINLY ACROSS THE RED RIVER VALLEY EAST OF I-35 TODAY. LATEST HI-RES MODEL DATA AND OBSERVATIONAL TRENDS INDICATE AREAS NEAR AND EAST OF LAKE TEXOMA STAND THE BEST SHOT AT BRIEF SHOWERS AND POSSIBLY A STORM MID-MORNING THROUGH EARLY AFTERNOON AS WEAK MID-LEVEL LOW BRUSHES AREA. EXCESSIVE RAINFALL AMOUNTS ARE NOT EXPECTED AND WE CURRENTLY DO NOT EXPECT ANY SUBSTANTIAL EFFECT ON THE CURRENT FLOODING SITUATION OVER SOUTH-CENTRAL AND SOUTHEAST OKLAHOMA. FLAT UPPER RIDGE STILL PROGD TO BUILD OVER REGION TOMORROW THROUGH MOST OF THE WEEK LEADING TO HOT AND MUGGY CONDITIONS WITH LITTLE OR NO CHANCE FOR RAIN. DEVELOPMENT OF NORTHWEST FLOW WITH RIDGE BREAKDOWN ANTICIPATED FOR NEXT WEEKEND. MEDIUM RANGE FORECASTS DIFFER ON TIMING OF POTENTIAL FRONT BUT CONSENSUS BLEND OF POPS AND TEMP DECREASE GENERALLY ACCEPTED AND KEPT IN LATEST FORECAST. && .PRELIMINARY POINT TEMPS/POPS... OKLAHOMA CITY OK 91 73 92 74 / 10 0 0 0 HOBART OK 93 71 95 72 / 10 0 0 0 WICHITA FALLS TX 92 72 95 73 / 20 10 0 0 GAGE OK 94 71 95 70 / 10 0 0 0 PONCA CITY OK 94 75 95 76 / 10 0 0 0 DURANT OK 87 74 94 73 / 60 10 0 0 && .OUN WATCHES/WARNINGS/ADVISORIES... OK...NONE. TX...NONE. && 04/11
Hazardous weather outlook, Jun 21, 10:33 AM CDT, 27 minutes before
HAZARDOUS WEATHER OUTLOOK...UPDATED NATIONAL WEATHER SERVICE NORMAN OK 1033 AM CDT SUN JUN 21 2015 OKZ004>048-050>052-TXZ083>090-221545- 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- 1033 AM CDT SUN JUN 21 2015 THIS HAZARDOUS WEATHER OUTLOOK IS FOR PORTIONS OF NORTHERN... WESTERN...CENTRAL...AND SOUTHERN OKLAHOMA...AND WESTERN NORTH TEXAS. .DAY ONE...TODAY AND TONIGHT... .FLOODING... RIVERS CONTINUE TO FALL... BUT MODERATE TO MAJOR FLOODING WILL CONTINUE ON SEVERAL RIVERS ACROSS SOUTHERN AND CENTRAL OKLAHOMA THROUGH TODAY. NUMEROUS CREEKS AND STREAMS ACROSS SOUTH CENTRAL OKLAHOMA WILL ALSO CONTINUE TO EXPERIENCE FLOODING. .THUNDERSTORMS... SCATTERED THUNDERSTORMS WILL CONTINUE ACROSS SOUTHERN OKLAHOMA THROUGH THIS AFTERNOON. NO SEVERE WEATHER IS ANTICIPATED...BUT VERY HEAVY RAINFALL WILL RESULT IN FLASH FLOODING ALONG AND AROUND THE RED RIVER OF SOUTHERN BRYAN COUNTY. .HEAT... HIGH RELATIVE HUMIDITIES AND VERY WARM TEMPERATURES WILL RESULT IN HEAT INDICES REACHING THE UPPER 90S TO LOWER 100S ACROSS THE REGION THIS AFTERNOON. .DAYS TWO THROUGH SEVEN...MONDAY THROUGH SATURDAY... .FLOODING... RIVERS IN FLOOD ACROSS CENTRAL AND SOUTHERN OKLAHOMA WILL CONTINUE TO FALL THROUGH MONDAY... BUT SEVERAL WILL REMAIN ABOVE FLOOD STAGE INTO THE MIDDLE OF THIS COMING WEEK. .HEAT... HIGH RELATIVE HUMIDITIES AND VERY WARM TEMPERATURES WILL COMBINE FOR AFTERNOON HEAT INDICES REACHING THE UPPER 90S TO LOWER 100S ACROSS THE REGION EACH AFTERNOON THROUGH WEDNESDAY. GET GRAPHICS AND MORE DETAILS AT WEATHER.GOV/NORMAN...AND FOLLOW OUR WEATHER FORECAST OFFICE ON TWITTER AND FACEBOOK. 04/11
The office that day
Everything else NWS Norman, OK issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jun 21, 9:34 AM CDT | Areal Flood Advisory | OUN | Bryan | 3 hr |
| Jun 21, 10:04 AM CDT | Flash Flood Warning | OUN | Bryan | 6 hr |
| Jun 21, 12:15 PM CDT | Areal Flood Advisory | OUN | Bryan, Johnston, Marshall | 3 hr |
| Jun 21, 12:39 PM CDT | Flash Flood Warning | OUN | Marshall | 5 hr |
| Jun 21, 1:48 PM CDT | Flash Flood Warning | OUN | Love | 6 hr |
| Jun 21, 2:33 PM CDT | Areal Flood Advisory | OUN | Jefferson, Love | 4 hr |
| Jun 21, 6:56 PM CDT | Areal Flood Warning | OUN | Bryan, Love, Marshall | 12 hr |
Nearby
Flash Flood Warnings in Oklahoma, 2015Every 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; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.