Alert archive / Oklahoma / Flash Flood Watches in 2016
Flash Flood Watch 1, NWS Norman, OK
NWS Norman, OK issued this flash flood watch at Mar 7, 2016, 9:07 PM CST for 11 counties in Oklahoma. It was in force for 29 hr.
The area
The counties it named.
The facts
- Issued
- Mar 7, 2016, 9:07 PM CST (03:07 UTC)
- Expired
- Mar 9, 2016, 2:13 AM CST
- In force
- 29 hr
- Issued by
- NWS Norman, OK
- Flood severity
- None
Counties Atoka County, OK, Bryan County, OK, Carter County, OK, Coal County, OK, Hughes County, OK, Johnston County, OK, Love County, OK, Marshall County, OK, Murray County, OK, Pontotoc County, OK, Seminole County, OK
The radar
The Norman radar (KTLX), 114 km from the middle of the area, began a volume at 03:09 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 00:00Z, 3.1 hours before the alert went out and 110 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
- 258 J/kg
- Mixed-layer CIN
- -104 J/kg
- Mixed-layer LCL
- 676 m above ground
- 0-6 km bulk shear
- 44 kt
- 0-1 km storm-relative helicity
- 329 m²/s²
- 0-3 km storm-relative helicity
- 349 m²/s²
- Significant tornado parameter
- 0.3
- Supercell composite
- 7.7
What forecasters said that day
The local office's own words before this flash flood watch 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 watch went out at Mar 7, 5:26 PM CST, 3 hours 41 minutes earlier.
Area forecast discussion, Mar 7, 5:26 PM CST, 3 hours 41 minutes before
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</html>Hazardous weather outlook, Mar 7, 7:45 PM CST, 1 hour 22 minutes before
HAZARDOUS WEATHER OUTLOOK...UPDATED NATIONAL WEATHER SERVICE NORMAN OK 745 PM CST MON MAR 7 2016 OKZ004>048-050>052-TXZ083>090-090145- 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- 745 PM CST MON MAR 7 2016 THIS HAZARDOUS WEATHER OUTLOOK IS FOR PORTIONS OF NORTHERN... WESTERN...CENTRAL...AND SOUTHERN OKLAHOMA...AND WESTERN NORTH TEXAS. .DAY ONE...TONIGHT... .THUNDERSTORMS... THERE IS A SLIGHT RISK OF SEVERE THUNDERSTORMS THIS EVENING INTO TUESDAY MORNING ACROSS PORTIONS OF OKLAHOMA AND WESTERN NORTH TEXAS. LOCATION... THE SLIGHT RISK IS SOUTH OF A LINE FROM QUANAH TEXAS... TO ALTUS OKLAHOMA... TO MOORE OKLAHOMA...TO HOLDENVILLE OKLAHOMA. A MARGINAL RISK SURROUNDS THE SLIGHT RISK... AND IS EAST OF A LINE FROM BUFFALO... TO SHATTUCK OKLAHOMA. TIMING... SEVERE STORMS WILL BE POSSIBLE THROUGH TUESDAY MORNING. HOWEVER... THE MOST LIKELY TIME FOR SEVERE STORMS WILL BE AFTER MIDNIGHT. IMPACTS... THE STRONGEST STORMS WILL BE CAPABLE OF HAIL UP TO THE SIZE OF GOLF BALLS... DAMAGING WIND GUSTS BETWEEN 60 AND 70 MPH... AND LOCALLY HEAVY RAINFALL THAT MAY LEAD TO FLASH FLOODING. THERE IS A LOW CHANCE OF TORNADOES IN PARTS OF SOUTHERN OKLAHOMA AND WESTERN NORTH TEXAS. DISCUSSION... A FEW STORMS MAY DEVELOP NEAR A DRYLINE IN PARTS OF WESTERN OKLAHOMA AND WESTERN NORTH TEXAS LATE THIS EVENING. IF THESE STORMS DEVELOP... THEY COULD BECOME SEVERE... PRODUCING LARGE HAIL AND STRONG WIND GUSTS. SHOWERS AND THUNDERSTORMS ACROSS NORTHERN TEXAS WILL CONTINUE TO DEVELOP AND SPREAD NORTHWARD INTO OKLAHOMA AND WESTERN NORTH TEXAS TONIGHT INTO TUESDAY MORNING. THESE STORMS WILL BE CAPABLE OF SEVERE WEATHER...INCLUDING LARGE HAIL...STRONG WIND GUSTS...AND A LOW RISK OF TORNADOES. .SPOTTER AND EMERGENCY MANAGEMENT INFORMATION STATEMENT... STORM SPOTTER GROUPS AND EMERGENCY MANAGEMENT PERSONNEL ACROSS THE RISK AREAS SHOULD PLAN FOR SEVERE WEATHER OPERATIONS THROUGH TONIGHT. .DAYS TWO THROUGH SEVEN...TUESDAY THROUGH SUNDAY... .THUNDERSTORMS... THE CHANCE FOR THUNDERSTORMS WILL CONTINUE TUESDAY THROUGH FRIDAY. THERE IS A SLIGHT RISK OF SEVERE STORMS ON TUESDAY ACROSS PORTIONS OF CENTRAL AND SOUTHERN OKLAHOMA AND WESTERN NORTH TEXAS. THE STRONGEST STORMS WILL BE CAPABLE OF... LARGE HAIL UP TO THE SIZE OF GOLF BALLS... DAMAGING WIND GUSTS... LOCALLY HEAVY RAINFALL... ALONG WITH A LOW RISK OF TORNADOES. GET GRAPHICS AND MORE DETAILS AT WEATHER.GOV/NORMAN...AND FOLLOW OUR WEATHER FORECAST OFFICE ON TWITTER AND FACEBOOK. KURTZ/EM/MAHALE
In the hours before
Special weather statement, Mar 7, 6:57 PM CST, 2 hours 10 minutes before
SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE NORMAN OK
657 PM CST MON MAR 7 2016
OKZ005-010-080130-
WOODS OK-WOODWARD OK-
657 PM CST MON MAR 7 2016
...SIGNIFICANT WEATHER ADVISORY FOR WEST CENTRAL WOODS AND
NORTHEASTERN WOODWARD COUNTIES UNTIL 730 PM CST...
AT 655 PM CST...A STRONG THUNDERSTORM WAS LOCATED 6 MILES NORTHWEST
OF MOORELAND...MOVING NORTH-NORTHEAST AT 35 MPH. THIS STORM IS
MOVING TOWARD ALABASTER CAVERNS STATE PARK.
HAZARDS INCLUDE...
HAIL UP TO THE SIZE OF NICKELS...
WIND GUSTS TO 50 MPH...
LAT...LON 3679 9899 3645 9923 3648 9934 3660 9932
3660 9929 3670 9930 3685 9927
TIME...MOT...LOC 0055Z 198DEG 30KT 3651 9929
..SPEG.Special weather statement, Mar 7, 8:54 PM CST, 13 minutes before
SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE NORMAN OK
854 PM CST MON MAR 7 2016
OKZ051-052-080330-
BRYAN OK-MARSHALL OK-
854 PM CST MON MAR 7 2016
...SIGNIFICANT WEATHER ADVISORY FOR SOUTHWESTERN BRYAN AND
SOUTHEASTERN MARSHALL COUNTIES UNTIL 930 PM CST...
AT 851 PM CST...A STRONG THUNDERSTORM WAS LOCATED 4 MILES WEST OF
POTTSBORO TEXAS...MOVING NORTHEAST AT 50 MPH.
HAZARDS INCLUDE...
WIND GUSTS TO 50 MPH...
HAIL UP TO ONE-HALF INCH DIAMETER...
LAT...LON 3382 9653 3382 9658 3385 9663 3389 9659
3390 9663 3392 9666 3391 9668 3385 9669
3383 9671 3383 9676 3387 9680 3387 9683
3385 9685 3386 9688 3407 9650 3403 9631
3384 9626 3378 9644 3377 9650
TIME...MOT...LOC 0251Z 236DEG 43KT 3379 9675
..SPEG.The office that day
Everything else NWS Norman, OK issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Mar 7, 6:57 PM CST | Special Weather Statement | OUN | Woodward | 33 min |
| Mar 7, 8:54 PM CST | Special Weather Statement | OUN | Marshall | 36 min |
| Mar 7, 9:31 PM CST | Special Weather Statement | OUN | Atoka, Bryan | 44 min |
| Mar 7, 9:35 PM CST | Special Weather Statement | OUN | Seminole | 25 min |
| Mar 7, 10:10 PM CST | Severe Thunderstorm Warning | OUN | Atoka, Coal, Hughes, Johnston, Pontotoc | 50 min |
| Mar 7, 10:17 PM CST | Special Weather Statement | OUN | Atoka | 28 min |
| Mar 7, 10:28 PM CST | Special Weather Statement | OUN | Hughes, Pontotoc, Seminole | 47 min |
| Mar 7, 10:34 PM CST | Areal Flood Advisory | OUN | Murray | 116 min |
| Mar 8, 5:36 AM CST | Special Weather Statement | OUN | Greer, Harmon | 24 min |
| Mar 8, 6:12 AM CST | Special Weather Statement | OUN | Custer, Greer, Kiowa, Washita | 33 min |
| Mar 8, 7:13 AM CST | Special Weather Statement | OUN | Caddo, Kiowa | 32 min |
| Mar 8, 7:32 AM CST | River Flood Warning | OUN | Bryan | 40 hr |
| Mar 8, 7:41 AM CST | River Flood Warning | OUN | Atoka, Bryan | 3 days |
| Mar 8, 8:36 AM CST | Special Weather Statement | OUN | Canadian | 24 min |
| Mar 8, 8:38 AM CST | Areal Flood Advisory | OUN | Beckham, Caddo, Custer, Greer, Jackson, Kiowa and 1 more | 3 hr |
| Mar 8, 8:45 AM CST | Special Weather Statement | OUN | Stephens | 30 min |
| Mar 8, 8:59 AM CST | Special Weather Statement | OUN | Oklahoma | 31 min |
| Mar 8, 9:07 AM CST | Special Weather Statement | OUN | Oklahoma | 23 min |
| Mar 8, 9:19 AM CST | Areal Flood Advisory | OUN | Bryan, Carter, Garvin, Johnston, Love, Marshall and 2 more | 3 hr |
| Mar 8, 9:27 AM CST | Severe Thunderstorm Warning | OUN | Bryan, Carter, Johnston, Love, Marshall | 48 min |
| Mar 8, 9:37 AM CST | Special Weather Statement | OUN | Oklahoma | 23 min |
| Mar 8, 9:47 AM CST | Areal Flood Advisory | OUN | Cleveland | 3 hr |
| Mar 8, 10:07 AM CST | Special Weather Statement | OUN | Atoka, Coal, Johnston | 23 min |
| Mar 8, 10:20 AM CST | Areal Flood Advisory | OUN | Atoka, Bryan, Coal, Hughes, Johnston, Pontotoc and 1 more | 3 hr |
| Mar 8, 10:31 AM CST | Special Weather Statement | OUN | Coal, Pontotoc | 29 min |
| Mar 8, 11:01 AM CST | Areal Flood Advisory | OUN | Atoka, Bryan, Coal, Hughes | 3 hr |
| Mar 8, 11:02 AM CST | Special Weather Statement | OUN | Atoka | 28 min |
| Mar 8, 5:00 AM CST | Special Weather Statement | OUN | Hardeman | 30 min |
| Mar 8, 5:53 AM CST | Special Weather Statement | OUN | Hardeman | 37 min |
Nearby
Flash Flood Watches in Oklahoma, 2016Every flash flood watch in 2016
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.