Alert archive / Oklahoma / Flash Flood Warnings in 2016
Flash Flood Warning 101, NWS Norman, OK
NWS Norman, OK issued this flash flood warning at Aug 31, 2016, 3:01 PM CDT for Oklahoma County, Oklahoma. 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
- Aug 31, 2016, 3:01 PM CDT (20:01 UTC)
- Expired
- Aug 31, 2016, 6:00 PM CDT
- In force
- 3 hr
- Issued by
- NWS Norman, OK
- Area
- Storm-based polygon
- Flood severity
- None
County Oklahoma County, OK
The radar
The Norman radar (KTLX), 24 km from the middle of the area, began a volume at 20:05 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 |
|---|---|---|---|
| Aug 31, 3:40 PM CDT | FLASH FLOOD | S Oklahoma City, OK | SEVERAL REPORTS OF STREET FLOODING/HIGH WATER ON A FEW STREETS IN SOUTH OKC GENERALLY BETWEEN DOWNTOWN AND I-240 AS WELL AS THE EAST OKC METRO. |
Local storm reports filed while the alert was in force, from inside its polygon or its counties.
The nearest sounding before it
Norman, OK (KOUN), launched 12:00Z, 8.0 hours before the alert went out and 32 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
- 850 J/kg
- Mixed-layer CIN
- -52 J/kg
- Mixed-layer LCL
- 981 m above ground
- 0-6 km bulk shear
- 9 kt
- 0-1 km storm-relative helicity
- -10 m²/s²
- 0-3 km storm-relative helicity
- -11 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted.
843 WGUS54 KOUN 312001 FFWOUN OKC109-312300- /O.NEW.KOUN.FF.W.0101.160831T2001Z-160831T2300Z/ /00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/ BULLETIN - EAS ACTIVATION REQUESTED FLASH FLOOD WARNING NATIONAL WEATHER SERVICE NORMAN OK 301 PM CDT WED AUG 31 2016 THE NATIONAL WEATHER SERVICE IN NORMAN HAS ISSUED A * FLASH FLOOD WARNING FOR... SOUTHWESTERN OKLAHOMA COUNTY IN CENTRAL OKLAHOMA... * UNTIL 600 PM CDT * AT 300 PM CDT...DOPPLER RADAR INDICATED THUNDERSTORMS PRODUCING HEAVY RAIN ACROSS THE WARNED AREA. UP TO TWO INCHES OF RAIN HAVE ALREADY FALLEN. FLASH FLOODING IS OCCURRING OR IS IMMINENT. * SOME LOCATIONS THAT WILL EXPERIENCE FLOODING INCLUDE... OKLAHOMA CITY...MIDWEST CITY...DEL CITY...SPENCER... NICHOLS HILLS...TINKER AIR FORCE BASE...FOREST PARK... LAKE ALUMA AND SMITH VILLAGE. ADDITIONAL RAINFALL AMOUNTS OF ONE INCH IS POSSIBLE IN THE WARNED AREA. PRECAUTIONARY/PREPAREDNESS ACTIONS... TURN AROUND...DON'T DROWN WHEN ENCOUNTERING FLOODED ROADS. MOST FLOOD DEATHS OCCUR IN VEHICLES. EXCESSIVE RUNOFF FROM HEAVY RAINFALL WILL CAUSE FLOODING OF SMALL CREEKS AND STREAMS...URBAN AREAS...HIGHWAYS...STREETS AND UNDERPASSES AS WELL AS OTHER DRAINAGE AREAS AND LOW LYING SPOTS. && LAT...LON 3558 9735 3543 9738 3541 9755 3553 9757 $$ MAHALE
2 follow-up statements
187 WGUS74 KOUN 312123 FFSOUN FLASH FLOOD STATEMENT NATIONAL WEATHER SERVICE NORMAN OK 423 PM CDT WED AUG 31 2016 OKC109-312300- /O.CON.KOUN.FF.W.0101.000000T0000Z-160831T2300Z/ /00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/ OKLAHOMA OK- 423 PM CDT WED AUG 31 2016 ...THE FLASH FLOOD WARNING REMAINS IN EFFECT UNTIL 600 PM CDT FOR SOUTHWESTERN OKLAHOMA COUNTY... ALTHOUGH HEAVY RAIN HAS ENDED AS OF 415 PM CDT...RADAR ESTIMATES 2 TO 3 INCHES OF RAIN FELL IN AN LESS THAN TWO HOURS IN PORTIONS OF OKLAHOMA CITY NEAR AND NORTHEAST OF DOWNTOWN. FLOODING WILL CONTINUE AS THIS WATER FLOWS THROUGH STREAMS, CREEKS AND DRAINAGE CHANNELS. AVOID FLOOD PRONE AREAS AND DO NOT DRIVE ON FLOODED ROADS. DO NOT ALLOW CHILDREN TO PLAY IN STREAMS AND CREEKS. SOME LOCATIONS THAT WILL EXPERIENCE FLOODING INCLUDE... OKLAHOMA CITY...MIDWEST CITY...DEL CITY...SPENCER...NICHOLS HILLS... TINKER AIR FORCE BASE...FOREST PARK...LAKE ALUMA AND SMITH VILLAGE. PRECAUTIONARY/PREPAREDNESS ACTIONS... TURN AROUND...DON'T DROWN WHEN ENCOUNTERING FLOODED ROADS. MOST FLOOD DEATHS OCCUR IN VEHICLES. EXCESSIVE RUNOFF FROM HEAVY RAINFALL WILL CAUSE FLOODING OF SMALL CREEKS AND STREAMS...URBAN AREAS...HIGHWAYS...STREETS AND UNDERPASSES AS WELL AS OTHER DRAINAGE AREAS AND LOW LYING SPOTS. && LAT...LON 3558 9735 3543 9738 3541 9755 3553 9757 $$ ..SPEG.
483 WGUS74 KOUN 312252 FFSOUN FLASH FLOOD STATEMENT NATIONAL WEATHER SERVICE NORMAN OK 552 PM CDT WED AUG 31 2016 OKC109-312300- /O.EXP.KOUN.FF.W.0101.000000T0000Z-160831T2300Z/ /00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/ OKLAHOMA OK- 552 PM CDT WED AUG 31 2016 ...THE FLASH FLOOD WARNING FOR SOUTHWESTERN OKLAHOMA COUNTY WILL EXPIRE AT 600 PM CDT... THE HEAVY RAIN HAS ENDED AND WIDESPREAD FLOODING IS NO LONGER EXPECTED. HOWEVER... FLOODING MAY CONTINUE IN CREEKS... STREAMS AND FLOOD PRONE AREAS AS THE WATER CONTINUES TO FLOW THROUGH THESE CHANNELS. PLEASE CONTINUE TO HEED ANY REMAINING ROAD CLOSURES. LAT...LON 3558 9735 3543 9738 3541 9755 3553 9757 $$ ..SPEG.
The office that day
Everything else NWS Norman, OK issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Aug 30, 8:44 PM CDT | Special Weather Statement | OUN | Tillman | 31 min |
| Aug 30, 9:30 PM CDT | Special Weather Statement | OUN | Comanche | 30 min |
| Aug 30, 9:33 PM CDT | Special Weather Statement | OUN | Canadian | 27 min |
| Aug 30, 9:48 PM CDT | Areal Flood Advisory | OUN | Caddo, Canadian, Grady | 3 hr |
| Aug 30, 10:48 PM CDT | Areal Flood Advisory | OUN | Canadian | 117 min |
| Aug 31, 12:53 PM CDT | Special Weather Statement | OUN | Beckham | 37 min |
| Aug 31, 1:03 PM CDT | Areal Flood Advisory | OUN | Beckham, Roger Mills | 3 hr |
| Aug 31, 1:38 PM CDT | Special Weather Statement | OUN | Oklahoma | 37 min |
| Aug 31, 1:42 PM CDT | Areal Flood Advisory | OUN | Woodward | 3 hr |
| Aug 31, 1:54 PM CDT | Special Weather Statement | OUN | Roger Mills | 36 min |
| Aug 31, 2:09 PM CDT | Special Weather Statement | OUN | Oklahoma | 36 min |
| Aug 31, 2:25 PM CDT | Areal Flood Advisory | OUN | Roger Mills | 3 hr |
| Aug 31, 2:28 PM CDT | Special Weather Statement | OUN | Kiowa | 32 min |
| Aug 31, 2:53 PM CDT | Areal Flood Advisory | OUN | Oklahoma | 3 hr |
| Aug 31, 3:15 PM CDT | Special Weather Statement | OUN | Lincoln | 30 min |
| Aug 31, 3:16 PM CDT | Special Weather Statement | OUN | Comanche | 29 min |
| Aug 31, 3:20 PM CDT | Special Weather Statement | OUN | Oklahoma | 25 min |
| Aug 31, 3:22 PM CDT | Special Weather Statement | OUN | Beckham | 38 min |
| Aug 31, 3:35 PM CDT | Flash Flood Warning | OUN | Beckham | 3 hr |
| Aug 31, 3:36 PM CDT | Special Weather Statement | OUN | Oklahoma | 24 min |
| Aug 31, 3:44 PM CDT | Special Weather Statement | OUN | Caddo | 31 min |
| Aug 31, 3:46 PM CDT | Special Weather Statement | OUN | Beckham, Washita | 29 min |
| Aug 31, 3:55 PM CDT | Special Weather Statement | OUN | Lincoln | 35 min |
| Aug 31, 3:58 PM CDT | Areal Flood Advisory | OUN | Lincoln | 2 hr |
| Aug 31, 4:10 PM CDT | Areal Flood Advisory | OUN | Caddo | 3 hr |
| Aug 31, 4:13 PM CDT | Areal Flood Advisory | OUN | Washita | 3 hr |
| Aug 31, 4:31 PM CDT | Special Weather Statement | OUN | Washita | 29 min |
| Aug 31, 4:32 PM CDT | Special Weather Statement | OUN | Canadian | 28 min |
| Aug 31, 4:37 PM CDT | Special Weather Statement | OUN | Stephens | 23 min |
| Aug 31, 4:41 PM CDT | Special Weather Statement | OUN | Oklahoma | 34 min |
| Aug 31, 4:43 PM CDT | Severe Thunderstorm Warning | OUN | Oklahoma | 32 min |
| Aug 31, 4:53 PM CDT | Areal Flood Advisory | OUN | Logan | 112 min |
| Aug 31, 4:59 PM CDT | Areal Flood Advisory | OUN | Caddo, Washita | 6 hr |
| Aug 31, 5:05 PM CDT | Special Weather Statement | OUN | Caddo | 25 min |
| Aug 31, 5:10 PM CDT | Special Weather Statement | OUN | Canadian | 35 min |
| Aug 31, 5:12 PM CDT | Special Weather Statement | OUN | Pontotoc | 33 min |
| Aug 31, 5:13 PM CDT | Areal Flood Advisory | OUN | Oklahoma | 2 hr |
| Aug 31, 5:21 PM CDT | Flash Flood Warning | OUN | Logan | 114 min |
| Aug 31, 5:21 PM CDT | Severe Thunderstorm Warning | OUN | Canadian | 28 min |
| Aug 31, 5:31 PM CDT | Areal Flood Advisory | OUN | Garvin, McClain, Pontotoc, Pottawatomie | 3 hr |
| Aug 31, 5:42 PM CDT | Special Weather Statement | OUN | Kingfisher | 33 min |
| Aug 31, 5:53 PM CDT | Special Weather Statement | OUN | Caddo | 37 min |
| Aug 31, 5:58 PM CDT | Areal Flood Advisory | OUN | Stephens | 3 hr |
| Aug 31, 6:08 PM CDT | Special Weather Statement | OUN | Tillman | 3 hr |
| Aug 31, 6:27 PM CDT | Areal Flood Advisory | OUN | Caddo, Canadian, Grady | 3 hr |
| Aug 31, 6:34 PM CDT | Areal Flood Advisory | OUN | Kingfisher | 3 hr |
Nearby
Flash Flood Warnings in Oklahoma, 2016Every flash flood warning 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; local storm reports from the same archive; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.