Alert archive / Oklahoma / Flash Flood Watches in 2012
Flash Flood Watch 2, NWS Tulsa, OK
NWS Tulsa, OK issued this flash flood watch at Apr 30, 2012, 2:04 PM CDT for 5 counties in Oklahoma. It took effect at Apr 30, 2012, 7:00 PM CDT. It was in force for 12 hr.
The area
The counties it named.
The facts
- Issued
- Apr 30, 2012, 2:04 PM CDT (19:04 UTC)
- In effect from
- Apr 30, 2012, 7:00 PM CDT
- Expired
- May 1, 2012, 7:00 AM CDT
- In force
- 12 hr
- Issued by
- NWS Tulsa, OK
- Flood severity
- None
Counties Craig County, OK, Nowata County, OK, Ottawa County, OK, Pawnee County, OK, Washington County, OK
The radar
The Tulsa radar (KINX), 57 km from the middle of the area, began a volume at 19:03 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
Lamont, OK (KLMN), launched 12:00Z, 7.1 hours before the alert went out and 164 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
- 0 J/kg
- Mixed-layer CIN
- No buoyant parcel
- Mixed-layer LCL
- 1204 m above ground
- 0-6 km bulk shear
- 46 kt
- 0-1 km storm-relative helicity
- -12 m²/s²
- 0-3 km storm-relative helicity
- 3 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted, in the capitals the NWS used until 2016.
732 WGUS64 KTSA 301904 FFATSA URGENT - IMMEDIATE BROADCAST REQUESTED FLOOD WATCH NATIONAL WEATHER SERVICE TULSA OK 204 PM CDT MON APR 30 2012 ...ADDITIONAL HEAVY RAINFALL POSSIBLE OVERNIGHT ACROSS PARTS OF NORTHEAST OKLAHOMA.... OKZ054>059-010300- /O.NEW.KTSA.FF.A.0002.120501T0000Z-120501T1200Z/ /00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/ OSAGE-WASHINGTON OK-NOWATA-CRAIG-OTTAWA-PAWNEE- INCLUDING THE CITIES OF...PAWHUSKA...BARTLESVILLE...NOWATA... VINITA...MIAMI...PAWNEE 204 PM CDT MON APR 30 2012 ...FLASH FLOOD WATCH IN EFFECT FROM 7 PM CDT THIS EVENING THROUGH TUESDAY MORNING... THE NATIONAL WEATHER SERVICE IN TULSA HAS ISSUED A * FLASH FLOOD WATCH FOR A PORTION OF NORTHEAST OKLAHOMA... INCLUDING THE FOLLOWING AREAS...CRAIG...NOWATA...OSAGE... OTTAWA...PAWNEE AND WASHINGTON. * FROM 7 PM CDT THIS EVENING THROUGH TUESDAY MORNING * AN UPPER LEVEL DISTURBANCE IN THE WESTERLY FLOW ALOFT WILL ENTER THE SOUTHERN PLAINS OVERNIGHT. ADDITIONAL SHOWER AND THUNDERSTORM DEVELOPMENT WILL LIKELY TAKE PLACE TO THE WEST AND MOVE EAST...IMPACTING PARTS OF NORTHEAST OKLAHOMA LATER TONIGHT. RADAR ESTIMATES OF 3 TO 7 INCHES OF RAIN HAS FALLEN OVER PARTS OF NORTHEAST OKLAHOMA...AND HAS RESULTED IN NUMEROUS FLOODING PROBLEMS LAST NIGHT AND THIS MORNING. WHILE THERE IS UNCERTAINTY CONCERNING THE DETAILS OF TONIGHTS RAINFALL SETUP...ANTECEDENT CONDITIONS COMBINED WITH ADDITIONAL RAINFALL POTENTIAL FROM TONIGHTS SYSTEM WILL RAPIDLY AGGRAVATE ALREADY FLOODED AREAS. THEREFORE...A FLASH FLOOD WATCH WILL IN EFFECT TONIGHT. PRECAUTIONARY/PREPAREDNESS ACTIONS... IF YOU ARE IN THE WATCH AREA...KEEP INFORMED...AND BE READY FOR QUICK ACTION IF FLASH FLOODING IS OBSERVED OR IF A WARNING IS ISSUED. BE ESPECIALLY CAUTIOUS AT NIGHT WHEN IT IS HARDER TO RECOGNIZE THE DANGERS OF FLASH FLOODS. IF FLASH FLOODING IS OBSERVED...ACT QUICKLY. DO NOT STAY IN AREAS SUBJECT TO FLOODING WHEN WATER BEGINS TO RISE. MOTORISTS SHOULD NOT DRIVE THROUGH WATER OF UNKNOWN DEPTH. TAKE A DIFFERENT ROUTE TO REACH YOUR DESTINATION OR WAIT UNTIL THE WATER RECEDES. && $$
1 follow-up statement
110 WGUS64 KTSA 010315 FFATSA FLOOD WATCH NATIONAL WEATHER SERVICE TULSA OK 1015 PM CDT MON APR 30 2012 ...ADDITIONAL HEAVY RAINFALL POSSIBLE OVERNIGHT ACROSS PARTS OF NORTHEAST OKLAHOMA.... OKZ054>059-011115- /O.CON.KTSA.FF.A.0002.000000T0000Z-120501T1200Z/ /00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/ OSAGE-WASHINGTON OK-NOWATA-CRAIG-OTTAWA-PAWNEE- INCLUDING THE CITIES OF...PAWHUSKA...BARTLESVILLE...NOWATA... VINITA...MIAMI...PAWNEE 1015 PM CDT MON APR 30 2012 ...FLASH FLOOD WATCH REMAINS IN EFFECT UNTIL 7 AM CDT TUESDAY... THE FLASH FLOOD WATCH CONTINUES FOR * A PORTION OF NORTHEAST OKLAHOMA...INCLUDING THE FOLLOWING AREAS...CRAIG...NOWATA...OSAGE...OTTAWA...PAWNEE AND WASHINGTON. * UNTIL 7 AM CDT TUESDAY * RADAR ESTIMATES OF 3 TO 7 INCHES OF RAIN HAS FALLEN OVER PARTS OF NORTHEAST OKLAHOMA OVER THE PAST 24 HOURS...RESULTING IN NUMEROUS FLOODING PROBLEMS EARLIER TODAY. ANOTHER ROUND OF THUNDERSTORMS WITH HEAVY RAINFALL WILL MOVE ACROSS FAR NORTHEAST OKLAHOMA DURING THE NEXT FEW HOURS...WITH AN ADDITIONAL INCH OR TWO OF RAIN LIKELY IN A SHORT TIME. ANTECEDENT CONDITIONS COMBINED WITH ADDITIONAL RAINFALL POTENTIAL FROM TONIGHTS SYSTEM WILL RAPIDLY AGGRAVATE ALREADY FLOODED AREAS. THEREFORE...A FLASH FLOOD WATCH WILL REMAIN IN EFFECT TONIGHT. PRECAUTIONARY/PREPAREDNESS ACTIONS... IF YOU ARE IN THE WATCH AREA...KEEP INFORMED...AND BE READY FOR QUICK ACTION IF FLASH FLOODING IS OBSERVED OR IF A WARNING IS ISSUED. BE ESPECIALLY CAUTIOUS AT NIGHT WHEN IT IS HARDER TO RECOGNIZE THE DANGERS OF FLASH FLOODS. IF FLASH FLOODING IS OBSERVED...ACT QUICKLY. DO NOT STAY IN AREAS SUBJECT TO FLOODING WHEN WATER BEGINS TO RISE. MOTORISTS SHOULD NOT DRIVE THROUGH WATER OF UNKNOWN DEPTH. TAKE A DIFFERENT ROUTE TO REACH YOUR DESTINATION OR WAIT UNTIL THE WATER RECEDES. && $$
The office that day
Everything else NWS Tulsa, OK issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Apr 29, 7:41 PM CDT | Special Weather Statement | TSA | Osage | 34 min |
| Apr 29, 7:52 PM CDT | Severe Thunderstorm Warning | TSA | Osage, Pawnee | 38 min |
| Apr 29, 8:16 PM CDT | Severe Thunderstorm Warning | TSA | Osage, Pawnee | 44 min |
| Apr 29, 8:47 PM CDT | River Flood Warning | TSA | Ottawa | 5 days |
| Apr 29, 8:49 PM CDT | Tornado Warning | TSA | Osage | 26 min |
| Apr 29, 9:13 PM CDT | Tornado Warning | TSA | Osage | 29 min |
| Apr 29, 9:27 PM CDT | Severe Thunderstorm Warning | TSA | Osage, Washington | 33 min |
| Apr 29, 9:48 PM CDT | Areal Flood Advisory | TSA | Nowata, Osage, Pawnee, Washington | 3 hr |
| Apr 29, 9:58 PM CDT | Severe Thunderstorm Warning | TSA | Osage, Washington | 47 min |
| Apr 29, 10:13 PM CDT | Tornado Warning | TSA | Osage, Washington | 32 min |
| Apr 29, 10:35 PM CDT | Severe Thunderstorm Warning | TSA | Nowata | 20 min |
| Apr 29, 10:55 PM CDT | Flash Flood Warning | TSA | Osage | 4 hr |
| Apr 29, 11:16 PM CDT | Severe Thunderstorm Warning | TSA | Osage | 25 min |
| Apr 29, 11:44 PM CDT | Special Weather Statement | TSA | Washington | 31 min |
| Apr 30, 12:08 AM CDT | Special Weather Statement | TSA | Craig, Nowata | 37 min |
| Apr 30, 12:18 AM CDT | Special Weather Statement | TSA | Osage | 42 min |
| Apr 30, 12:41 AM CDT | Special Weather Statement | TSA | Ottawa | 64 min |
| Apr 30, 12:47 AM CDT | Special Weather Statement | TSA | Washington | 43 min |
| Apr 30, 1:02 AM CDT | Areal Flood Advisory | TSA | Craig, Nowata, Osage, Ottawa, Pawnee, Rogers and 1 more | 3 hr |
| Apr 30, 2:19 AM CDT | Special Weather Statement | TSA | Osage | 41 min |
| Apr 30, 2:55 AM CDT | Flash Flood Warning | TSA | Osage, Washington | 3 hr |
| Apr 30, 4:06 AM CDT | Areal Flood Advisory | TSA | Craig, Creek, Delaware, Mayes, Nowata, Osage and 6 more | 3 hr |
| Apr 30, 8:26 AM CDT | River Flood Warning | TSA | Nowata | 70 hr |
| Apr 30, 9:15 AM CDT | River Flood Warning | TSA | Washington | 23 hr |
| Apr 30, 9:15 AM CDT | River Flood Warning | TSA | Rogers, Tulsa | 41 hr |
| Apr 30, 11:18 AM CDT | Areal Flood Warning | TSA | Osage, Washington | 29 hr |
| Apr 30, 2:44 PM CDT | Special Weather Statement | TSA | Choctaw | 46 min |
| Apr 30, 5:33 PM CDT | Special Weather Statement | TSA | LeFlore | 27 min |
Nearby
Flash Flood Watches in Oklahoma, 2012Every flash flood watch in 2012
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.