Alert archive / Oklahoma / Flood Watches in 2021
Flood Watch 2, NWS Norman, OK
NWS Norman, OK issued this flood watch at Apr 27, 2021, 11:08 AM CDT for 29 counties in Oklahoma; 5 counties in Texas. It took effect at Apr 27, 2021, 6:00 PM CDT. It was in force for 33 hr.
The area
The counties it named.
The facts
- Issued
- Apr 27, 2021, 11:08 AM CDT (16:08 UTC)
- In effect from
- Apr 27, 2021, 6:00 PM CDT
- Expired
- Apr 29, 2021, 3:22 AM CDT
- In force
- 33 hr
- Issued by
- NWS Norman, OK
- Flood severity
- None
All 34 counties
Atoka County, OK, Bryan County, OK, Caddo County, OK, Canadian County, OK, Carter County, OK, Cleveland County, OK, Coal County, OK, Comanche County, OK, Cotton County, OK, Garvin County, OK, Grady County, OK, Hughes County, OK, Jefferson County, OK, Johnston County, OK, Kay County, OK, Lincoln County, OK, Logan County, OK, Love County, OK, Marshall County, OK, McClain County, OK, Murray County, OK, Noble County, OK, Oklahoma County, OK, Payne County, OK, Pontotoc County, OK, Pottawatomie County, OK, Seminole County, OK, Stephens County, OK, Tillman County, OK, Archer County, TX, Baylor County, TX, Clay County, TX, Wichita County, TX, Wilbarger County, TX
The radar
The Norman radar (KTLX), 66 km from the middle of the area, began a volume at 16:07 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 12:00Z, 4.1 hours before the alert went out and 51 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
- 124 J/kg
- Mixed-layer CIN
- -759 J/kg
- Mixed-layer LCL
- 831 m above ground
- 0-6 km bulk shear
- 29 kt
- 0-1 km storm-relative helicity
- 378 m²/s²
- 0-3 km storm-relative helicity
- 354 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted.
000 WGUS64 KOUN 271608 FFAOUN URGENT - IMMEDIATE BROADCAST REQUESTED Flood Watch National Weather Service Norman OK 1108 AM CDT Tue Apr 27 2021 OKZ008-013-019-020-023>032-038>048-050>052-TXZ086-089-090-280300- /O.NEW.KOUN.FA.A.0002.210427T2300Z-210429T1200Z/ /00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/ Kay-Noble-Logan-Payne-Caddo-Canadian-Oklahoma-Lincoln-Grady-McClain- Cleveland-Pottawatomie-Seminole-Hughes-Comanche-Stephens-Garvin- Murray-Pontotoc-Coal-Cotton-Jefferson-Carter-Johnston-Atoka-Love- Marshall-Bryan-Wichita-Archer-Clay- Including the cities of Coalgate, Durant, Perry, Shawnee, Mustang, Duncan, Lakeside City, Anadarko, Scotland, Davis, Seminole, Ada, Hinton, Chandler, Waurika, Ringling, Norman, Pauls Valley, Sheppard AFB, Guthrie, Stroud, Temple, Marietta, Blanchard, Tuttle, Newcastle, Sulphur, Atoka, Stillwater, Henrietta, Holdenville, Ponca City, Wynnewood, Tishomingo, Madill, Concho, Holliday, El Reno, Ryan, Wewoka, Lawton, Davenport, Meeker, Purcell, Lindsay, Blackwell, Wichita Falls, Moore, Ardmore, Prague, Kingston, Chickasha, Wetumka, Thackerville, Archer City, Wellston, Oklahoma City, Walters, and Yukon 1108 AM CDT Tue Apr 27 2021 ...FLOOD WATCH IN EFFECT FROM 6 PM CDT THIS EVENING THROUGH THURSDAY MORNING... The National Weather Service in Norman has issued a * Flood Watch for portions of Oklahoma and northern Texas, including the following areas, in Oklahoma, Atoka, Bryan, Caddo, Canadian, Carter, Cleveland, Coal, Comanche, Cotton, Garvin, Grady, Hughes, Jefferson, Johnston, Kay, Lincoln, Logan, Love, Marshall, McClain, Murray, Noble, Oklahoma, Payne, Pontotoc, Pottawatomie, Seminole and Stephens. In northern Texas, Archer, Clay and Wichita. * From 6 PM CDT this evening through Thursday morning * Rounds of thunderstorms tonight through Thursday morning will produce locally heavy rainfall and potential flash flooding and river flooding. PRECAUTIONARY/PREPAREDNESS ACTIONS... A Flood Watch means there is a potential for flooding based on current forecasts. You should monitor later forecasts and be alert for possible flood warnings. Those living in areas prone to flooding should be prepared to take action should flooding develop. && $$ .speg.
6 follow-up statements
328 WGUS64 KOUN 272003 FFAOUN Flood Watch National Weather Service Norman OK 303 PM CDT Tue Apr 27 2021 OKZ008-013-019-020-023>032-038>048-050>052-TXZ086-089-090-280415- /O.CON.KOUN.FA.A.0002.210427T2300Z-210429T1200Z/ /00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/ Kay-Noble-Logan-Payne-Caddo-Canadian-Oklahoma-Lincoln-Grady-McClain- Cleveland-Pottawatomie-Seminole-Hughes-Comanche-Stephens-Garvin- Murray-Pontotoc-Coal-Cotton-Jefferson-Carter-Johnston-Atoka-Love- Marshall-Bryan-Wichita-Archer-Clay- Including the cities of Coalgate, Durant, Perry, Shawnee, Mustang, Duncan, Lakeside City, Anadarko, Scotland, Davis, Seminole, Ada, Hinton, Chandler, Waurika, Ringling, Norman, Pauls Valley, Sheppard AFB, Guthrie, Stroud, Temple, Marietta, Blanchard, Tuttle, Newcastle, Sulphur, Atoka, Stillwater, Henrietta, Holdenville, Ponca City, Wynnewood, Tishomingo, Madill, Concho, Holliday, El Reno, Ryan, Wewoka, Lawton, Davenport, Meeker, Purcell, Lindsay, Blackwell, Wichita Falls, Moore, Ardmore, Prague, Kingston, Chickasha, Wetumka, Thackerville, Archer City, Wellston, Oklahoma City, Walters, and Yukon 303 PM CDT Tue Apr 27 2021 ...FLOOD WATCH REMAINS IN EFFECT THROUGH THURSDAY MORNING... The Flood Watch continues for * Portions of Oklahoma and northern Texas, including the following areas, in Oklahoma, Atoka, Bryan, Caddo, Canadian, Carter, Cleveland, Coal, Comanche, Cotton, Garvin, Grady, Hughes, Jefferson, Johnston, Kay, Lincoln, Logan, Love, Marshall, McClain, Murray, Noble, Oklahoma, Payne, Pontotoc, Pottawatomie, Seminole and Stephens. In northern Texas, Archer, Clay and Wichita. * Through Thursday morning * Rounds of thunderstorms tonight through Thursday morning will produce locally heavy rainfall and potential flash flooding and river flooding. PRECAUTIONARY/PREPAREDNESS ACTIONS... A Flood Watch means there is a potential for flooding based on current forecasts. You should monitor later forecasts and be alert for possible flood warnings. Those living in areas prone to flooding should be prepared to take action should flooding develop. && $$ .speg.
631 WGUS64 KOUN 280324 FFAOUN Flood Watch National Weather Service Norman OK 1024 PM CDT Tue Apr 27 2021 OKZ037-TXZ085-088-282200- /O.EXA.KOUN.FA.A.0002.000000T0000Z-210429T1200Z/ /00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/ Tillman-Wilbarger-Baylor- Including the cities of Vernon, Frederick, and Seymour 1024 PM CDT Tue Apr 27 2021 ...FLOOD WATCH IN EFFECT THROUGH THURSDAY MORNING... The National Weather Service in Norman has expanded the * Flood Watch to include portions of southwest Oklahoma and northern Texas, including the following areas, in southwest Oklahoma, Tillman. In northern Texas, Baylor and Wilbarger. * Through Thursday morning * Rounds of thunderstorms tonight through Thursday morning will produce locally heavy rainfall and potential flash flooding and river flooding. PRECAUTIONARY/PREPAREDNESS ACTIONS... A Flood Watch means there is a potential for flooding based on current forecasts. You should monitor later forecasts and be alert for possible flood warnings. Those living in areas prone to flooding should be prepared to take action should flooding develop. && $$ OKZ008-013-019-020-023>032-038>048-050>052-TXZ086-089-090-282200- /O.CON.KOUN.FA.A.0002.000000T0000Z-210429T1200Z/ /00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/ Kay-Noble-Logan-Payne-Caddo-Canadian-Oklahoma-Lincoln-Grady-McClain- Cleveland-Pottawatomie-Seminole-Hughes-Comanche-Stephens-Garvin- Murray-Pontotoc-Coal-Cotton-Jefferson-Carter-Johnston-Atoka-Love- Marshall-Bryan-Wichita-Archer-Clay- Including the cities of Coalgate, Durant, Perry, Shawnee, Mustang, Duncan, Lakeside City, Anadarko, Scotland, Davis, Seminole, Ada, Hinton, Chandler, Waurika, Ringling, Norman, Pauls Valley, Sheppard AFB, Guthrie, Stroud, Temple, Marietta, Blanchard, Tuttle, Newcastle, Sulphur, Atoka, Stillwater, Henrietta, Holdenville, Ponca City, Wynnewood, Tishomingo, Madill, Concho, Holliday, El Reno, Ryan, Wewoka, Lawton, Davenport, Meeker, Purcell, Lindsay, Blackwell, Wichita Falls, Moore, Ardmore, Prague, Kingston, Chickasha, Wetumka, Thackerville, Archer City, Wellston, Oklahoma City, Walters, and Yukon 1024 PM CDT Tue Apr 27 2021 ...FLOOD WATCH REMAINS IN EFFECT THROUGH THURSDAY MORNING... The Flood Watch continues for * Portions of Oklahoma and northern Texas, including the following areas, in Oklahoma, Atoka, Bryan, Caddo, Canadian, Carter, Cleveland, Coal, Comanche, Cotton, Garvin, Grady, Hughes, Jefferson, Johnston, Kay, Lincoln, Logan, Love, Marshall, McClain, Murray, Noble, Oklahoma, Payne, Pontotoc, Pottawatomie, Seminole and Stephens. In northern Texas, Archer, Clay and Wichita. * Through Thursday morning * Rounds of thunderstorms tonight through Thursday morning will produce locally heavy rainfall and potential flash flooding and river flooding. PRECAUTIONARY/PREPAREDNESS ACTIONS... A Flood Watch means there is a potential for flooding based on current forecasts. You should monitor later forecasts and be alert for possible flood warnings. Those living in areas prone to flooding should be prepared to take action should flooding develop. && $$ Mahale
602 WGUS64 KOUN 280833 FFAOUN Flood Watch National Weather Service Norman OK 333 AM CDT Wed Apr 28 2021 OKZ008-280945- /O.CAN.KOUN.FA.A.0002.000000T0000Z-210429T1200Z/ /00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/ Kay- Including the cities of Blackwell and Ponca City 333 AM CDT Wed Apr 28 2021 ...FLOOD WATCH IS CANCELLED... The Flood Watch for Kay County has been cancelled. $$ OKZ013-019-020-023>032-037>048-050>052-TXZ085-086-088>090-282200- /O.CON.KOUN.FA.A.0002.000000T0000Z-210429T1200Z/ /00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/ Noble-Logan-Payne-Caddo-Canadian-Oklahoma-Lincoln-Grady-McClain- Cleveland-Pottawatomie-Seminole-Hughes-Tillman-Comanche-Stephens- Garvin-Murray-Pontotoc-Coal-Cotton-Jefferson-Carter-Johnston-Atoka- Love-Marshall-Bryan-Wilbarger-Wichita-Baylor-Archer-Clay- Including the cities of Coalgate, Durant, Perry, Shawnee, Mustang, Duncan, Lakeside City, Anadarko, Scotland, Davis, Seminole, Ada, Hinton, Chandler, Waurika, Ringling, Norman, Pauls Valley, Seymour, Sheppard AFB, Guthrie, Stroud, Temple, Vernon, Marietta, Blanchard, Tuttle, Newcastle, Sulphur, Atoka, Stillwater, Henrietta, Holdenville, Wynnewood, Tishomingo, Frederick, Madill, Concho, Holliday, El Reno, Ryan, Wewoka, Lawton, Davenport, Meeker, Purcell, Lindsay, Wichita Falls, Moore, Ardmore, Prague, Kingston, Chickasha, Wetumka, Thackerville, Archer City, Wellston, Oklahoma City, Walters, and Yukon 333 AM CDT Wed Apr 28 2021 ...FLOOD WATCH REMAINS IN EFFECT THROUGH THURSDAY MORNING... The Flood Watch continues for * Portions of Oklahoma and northern Texas, including the following areas, in Oklahoma, Atoka, Bryan, Caddo, Canadian, Carter, Cleveland, Coal, Comanche, Cotton, Garvin, Grady, Hughes, Jefferson, Johnston, Lincoln, Logan, Love, Marshall, McClain, Murray, Noble, Oklahoma, Payne, Pontotoc, Pottawatomie, Seminole, Stephens and Tillman. In northern Texas, Archer, Baylor, Clay, Wichita and Wilbarger. * Through Thursday morning * Rounds of thunderstorms through Thursday morning will produce locally heavy rainfall and potential flash flooding and river flooding. PRECAUTIONARY/PREPAREDNESS ACTIONS... A Flood Watch means there is a potential for flooding based on current forecasts. You should monitor later forecasts and be alert for possible flood warnings. Those living in areas prone to flooding should be prepared to take action should flooding develop. && $$ Mahale
931 WGUS64 KOUN 282025 FFAOUN Flood Watch National Weather Service Norman OK 325 PM CDT Wed Apr 28 2021 OKZ013-019-020-023>032-037>048-050>052-TXZ085-086-088>090-290430- /O.CON.KOUN.FA.A.0002.000000T0000Z-210429T1200Z/ /00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/ Noble-Logan-Payne-Caddo-Canadian-Oklahoma-Lincoln-Grady-McClain- Cleveland-Pottawatomie-Seminole-Hughes-Tillman-Comanche-Stephens- Garvin-Murray-Pontotoc-Coal-Cotton-Jefferson-Carter-Johnston- Atoka-Love-Marshall-Bryan-Wilbarger-Wichita-Baylor-Archer-Clay- Including the cities of Perry, Guthrie, Stillwater, Anadarko, Hinton, Yukon, Concho, El Reno, Mustang, Oklahoma City, Chandler, Stroud, Prague, Meeker, Davenport, Wellston, Chickasha, Tuttle, Purcell, Newcastle, Blanchard, Norman, Moore, Shawnee, Seminole, Wewoka, Holdenville, Wetumka, Frederick, Lawton, Duncan, Pauls Valley, Lindsay, Wynnewood, Sulphur, Davis, Ada, Coalgate, Walters, Temple, Waurika, Ringling, Ryan, Ardmore, Tishomingo, Atoka, Marietta, Thackerville, Madill, Kingston, Durant, Vernon, Sheppard AFB, Wichita Falls, Seymour, Archer City, Holliday, Lakeside City, Scotland, and Henrietta 325 PM CDT Wed Apr 28 2021 ...FLOOD WATCH REMAINS IN EFFECT THROUGH THURSDAY MORNING... The Flood Watch for flash flooding...flooding of creeks and rivers...and flooding of low lying areas continues for * portions of Oklahoma and northern Texas, including the following areas, in Oklahoma, Atoka, Bryan, Caddo, Canadian, Carter, Cleveland, Coal, Comanche, Cotton, Garvin, Grady, Hughes, Jefferson, Johnston, Lincoln, Logan, Love, Marshall, McClain, Murray, Noble, Oklahoma, Payne, Pontotoc, Pottawatomie, Seminole, Stephens, and Tillman. In northern Texas, Archer, Baylor, Clay, Wichita, and Wilbarger. * Through Thursday morning * Rounds of thunderstorms through Thursday morning will produce locally heavy rainfall and potential flash flooding and river flooding. PRECAUTIONARY/PREPAREDNESS ACTIONS... A Flood Watch means there is a potential for flooding based on current forecasts. You should monitor later forecasts and be alert for possible flood warnings. Those living in areas prone to flooding should be prepared to take action should flooding develop. && $$
726 WGUS64 KOUN 290352 FFAOUN Flood Watch National Weather Service Norman OK 1052 PM CDT Wed Apr 28 2021 OKZ013-019-020-023-024-037-038-290500- /O.CAN.KOUN.FA.A.0002.000000T0000Z-210429T1200Z/ Noble-Logan-Payne-Caddo-Canadian-Tillman-Comanche- Including the cities of Perry, Anadarko, Guthrie, Frederick, Concho, El Reno, Mustang, Lawton, Hinton, Stillwater, and Yukon 1052 PM CDT Wed Apr 28 2021 ...FLOOD WATCH IS CANCELLED... The Flood Watch for portions of central Oklahoma...northern Oklahoma and southwest Oklahoma, including the following areas, in central Oklahoma, Canadian, Logan and Payne. In northern Oklahoma, Noble. In southwest Oklahoma, Caddo, Comanche and Tillman has been cancelled. $$ OKZ025>032-039>048-050>052-TXZ085-086-088>090-291200- /O.CON.KOUN.FA.A.0002.000000T0000Z-210429T1200Z/ /00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/ Oklahoma-Lincoln-Grady-McClain-Cleveland-Pottawatomie-Seminole- Hughes-Stephens-Garvin-Murray-Pontotoc-Coal-Cotton-Jefferson-Carter- Johnston-Atoka-Love-Marshall-Bryan-Wilbarger-Wichita-Baylor-Archer- Clay- Including the cities of Coalgate, Durant, Shawnee, Duncan, Lakeside City, Chickasha, Scotland, Davis, Seminole, Ada, Chandler, Waurika, Ringling, Norman, Pauls Valley, Seymour, Sheppard AFB, Stroud, Temple, Vernon, Marietta, Tuttle, Newcastle, Sulphur, Atoka, Wetumka, Henrietta, Holdenville, Wynnewood, Tishomingo, Madill, Ryan, Holliday, Wewoka, Davenport, Meeker, Purcell, Lindsay, Wichita Falls, Moore, Ardmore, Prague, Kingston, Blanchard, Thackerville, Archer City, Wellston, Oklahoma City, and Walters 1052 PM CDT Wed Apr 28 2021 ...FLOOD WATCH REMAINS IN EFFECT UNTIL 7 AM CDT THURSDAY... The Flood Watch continues for * Portions of Oklahoma and northern Texas, including the following areas, in Oklahoma, Atoka, Bryan, Carter, Cleveland, Coal, Cotton, Garvin, Grady, Hughes, Jefferson, Johnston, Lincoln, Love, Marshall, McClain, Murray, Oklahoma, Pontotoc, Pottawatomie, Seminole and Stephens. In northern Texas, Archer, Baylor, Clay, Wichita and Wilbarger. * Until 7 AM CDT Thursday * Any additional rainfall through this morning will produce locally heavy rainfall and potential flash flooding and river flooding. PRECAUTIONARY/PREPAREDNESS ACTIONS... A Flood Watch means there is a potential for flooding based on current forecasts. You should monitor later forecasts and be alert for possible flood warnings. Those living in areas prone to flooding should be prepared to take action should flooding develop. && $$ Mahale
088 WGUS64 KOUN 290822 FFAOUN Flood Watch National Weather Service Norman OK 322 AM CDT Thu Apr 29 2021 OKZ025>032-039>048-050>052-TXZ085-086-088>090-290930- /O.CAN.KOUN.FA.A.0002.000000T0000Z-210429T1200Z/ /00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/ Oklahoma-Lincoln-Grady-McClain-Cleveland-Pottawatomie-Seminole- Hughes-Stephens-Garvin-Murray-Pontotoc-Coal-Cotton-Jefferson-Carter- Johnston-Atoka-Love-Marshall-Bryan-Wilbarger-Wichita-Baylor-Archer- Clay- Including the cities of Coalgate, Durant, Shawnee, Duncan, Lakeside City, Chickasha, Scotland, Davis, Seminole, Ada, Chandler, Waurika, Ringling, Norman, Pauls Valley, Seymour, Sheppard AFB, Stroud, Temple, Vernon, Marietta, Tuttle, Newcastle, Sulphur, Atoka, Wetumka, Henrietta, Holdenville, Wynnewood, Tishomingo, Madill, Ryan, Holliday, Wewoka, Davenport, Meeker, Purcell, Lindsay, Wichita Falls, Moore, Ardmore, Prague, Kingston, Blanchard, Thackerville, Archer City, Wellston, Oklahoma City, and Walters 322 AM CDT Thu Apr 29 2021 ...FLOOD WATCH IS CANCELLED... The Flood Watch for portions of Oklahoma and northern Texas, including the following areas, in Oklahoma, Atoka, Bryan, Carter, Cleveland, Coal, Cotton, Garvin, Grady, Hughes, Jefferson, Johnston, Lincoln, Love, Marshall, McClain, Murray, Oklahoma, Pontotoc, Pottawatomie, Seminole and Stephens. In northern Texas, Archer, Baylor, Clay, Wichita and Wilbarger has been cancelled. Heavy rainfall has ended and additional flooding is not expected. Please continue to heed remaining road closures and any ongoing river flooding warnings. $$ Mahale
The office that day
Everything else NWS Norman, OK issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Apr 27, 5:30 PM CDT | Severe Thunderstorm Warning | OUN | Cotton, Tillman | 45 min |
| Apr 27, 5:50 PM CDT | Special Weather Statement | OUN | Tillman | 25 min |
| Apr 27, 6:01 PM CDT | Severe Thunderstorm Warning | OUN | Tillman | 44 min |
| Apr 27, 6:12 PM CDT | Severe Thunderstorm Warning | OUN | Comanche, Cotton, Tillman | 48 min |
| Apr 27, 6:41 PM CDT | Severe Thunderstorm Warning | OUN | Tillman | 49 min |
| Apr 27, 3:30 PM CDT | Severe Thunderstorm Warning | OUN | Foard, Knox | 45 min |
| Apr 27, 3:47 PM CDT | Tornado Warning | OUN | Foard, Knox | 28 min |
| Apr 27, 4:12 PM CDT | Tornado Warning | OUN | Baylor, Foard, Knox, Wilbarger | 48 min |
| Apr 27, 4:55 PM CDT | Tornado Warning | OUN | Wichita, Wilbarger | 39 min |
| Apr 27, 6:24 PM CDT | Special Weather Statement | OUN | Wilbarger | 36 min |
| Apr 27, 6:32 PM CDT | Severe Thunderstorm Warning | OUN | Baylor, Foard, Knox, Wilbarger | 43 min |
Nearby
Flood Watches in Oklahoma, 2021Flood Watches in Texas, 2021Every flood watch in 2021
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.