Alert archive / Texas / Flash Flood Watches in 2021
Flash Flood Watch 2, NWS Shreveport, LA
NWS Shreveport, LA issued this flash flood watch at Apr 28, 2021, 2:43 PM CDT for 9 counties in Texas; McCurtain County, Oklahoma; 8 counties in Arkansas. It took effect at Apr 28, 2021, 7:00 PM CDT. It was in force for 19 hr.
The area
The counties it named.
The facts
- Issued
- Apr 28, 2021, 2:43 PM CDT (19:43 UTC)
- In effect from
- Apr 28, 2021, 7:00 PM CDT
- Expired
- Apr 29, 2021, 1:56 PM CDT
- In force
- 19 hr
- Issued by
- NWS Shreveport, LA
- Flood severity
- None
Counties Columbia County, AR, Hempstead County, AR, Howard County, AR, Lafayette County, AR, Little River County, AR, Miller County, AR, Nevada County, AR, Sevier County, AR, McCurtain County, OK, Bowie County, TX, Camp County, TX, Cass County, TX, Franklin County, TX, Morris County, TX, Red River County, TX, Titus County, TX, Upshur County, TX, Wood County, TX
The radar
The Shreveport radar (KSHV), 117 km from the middle of the area, began a volume at 19:45 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
Shreveport, LA (KSHV), launched 12:00Z, 7.7 hours before the alert went out and 118 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
- 351 J/kg
- Mixed-layer CIN
- -247 J/kg
- Mixed-layer LCL
- 676 m above ground
- 0-6 km bulk shear
- 49 kt
- 0-1 km storm-relative helicity
- 259 m²/s²
- 0-3 km storm-relative helicity
- 290 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.5
The text
As transmitted.
506 WGUS64 KSHV 281943 FFASHV URGENT - IMMEDIATE BROADCAST REQUESTED Flood Watch National Weather Service Shreveport LA 243 PM CDT Wed Apr 28 2021 OKZ077-TXZ096-108-109-291100- /O.NEW.KSHV.FF.A.0002.210429T0000Z-210429T1800Z/ /00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/ McCurtain-Red River-Franklin-Titus- Including the cities of Broken Bow, Bogata, Mount Pleasant, Clarksville, Mount Vernon, and Idabel 243 PM CDT Wed Apr 28 2021 ...FLASH FLOOD WATCH IN EFFECT FROM 7 PM CDT THIS EVENING THROUGH THURSDAY AFTERNOON... The National Weather Service in Shreveport has issued a * Flash Flood Watch for portions of southeast Oklahoma and northeast Texas, including the following areas, in southeast Oklahoma, McCurtain. In northeast Texas, Franklin, Red River and Titus. * From 7 PM CDT this evening through Thursday afternoon * Rainfall totals of 2 to 4 inches, with isolated higher amounts possible. * Flooding may occur in urban and poor drainage areas. Heavy rainfall may also cause flooding of creeks, streams, and rivers. PRECAUTIONARY/PREPAREDNESS ACTIONS... A Flash Flood Watch means that conditions may develop that lead to Flash Flooding. Flash Flooding is a very dangerous situation. You should monitor later forecasts and be prepared to take action should Flash Flood Warnings be issued. && $$ 16
3 follow-up statements
677 WGUS64 KSHV 290251 FFASHV URGENT - IMMEDIATE BROADCAST REQUESTED Flood Watch National Weather Service Shreveport LA 951 PM CDT Wed Apr 28 2021 ARZ050-051-059-TXZ097-291115- /O.EXB.KSHV.FF.A.0002.000000T0000Z-210429T2100Z/ /00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/ Sevier-Howard-Little River-Bowie- Including the cities of Nashville, Texarkana, De Queen, Ashdown, Mineral Springs, and Dierks 951 PM CDT Wed Apr 28 2021 ...FLASH FLOOD WATCH IN EFFECT THROUGH THURSDAY AFTERNOON... The National Weather Service in Shreveport has expanded the * Flash Flood Watch to include portions of southwest Arkansas and northeast Texas, including the following areas, in southwest Arkansas, Howard, Little River and Sevier. In northeast Texas, Bowie. * Through Thursday afternoon * Rainfall totals of 2 to 4 inches, with isolated higher amounts in excess of 5 inches possible. * Flooding may occur in urban and poor drainage areas. Heavy rainfall may also cause flooding of creeks, streams, and rivers. PRECAUTIONARY/PREPAREDNESS ACTIONS... A Flash Flood Watch means that conditions may develop that lead to Flash Flooding. Flash Flooding is a very dangerous situation. You should monitor later forecasts and be prepared to take action should Flash Flood Warnings be issued. && $$ OKZ077-TXZ096-108-109-291115- /O.EXT.KSHV.FF.A.0002.000000T0000Z-210429T2100Z/ /00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/ McCurtain-Red River-Franklin-Titus- Including the cities of Broken Bow, Bogata, Mount Pleasant, Clarksville, Mount Vernon, and Idabel 951 PM CDT Wed Apr 28 2021 ...FLASH FLOOD WATCH NOW IN EFFECT THROUGH THURSDAY AFTERNOON... The Flash Flood Watch is now in effect for * Portions of southeast Oklahoma and northeast Texas, including the following areas, in southeast Oklahoma, McCurtain. In northeast Texas, Franklin, Red River and Titus. * Through Thursday afternoon * Rainfall totals of 2 to 4 inches, with isolated higher amounts in excess of 5 inches possible. * Flooding may occur in urban and poor drainage areas. Heavy rainfall may also cause flooding of creeks, streams, and rivers. PRECAUTIONARY/PREPAREDNESS ACTIONS... A Flash Flood Watch means that conditions may develop that lead to Flash Flooding. Flash Flooding is a very dangerous situation. You should monitor later forecasts and be prepared to take action should Flash Flood Warnings be issued. && $$ 15
066 WGUS64 KSHV 290705 FFASHV Flood Watch National Weather Service Shreveport LA 205 AM CDT Thu Apr 29 2021 ARZ060-061-070>072-TXZ110>112-124-125-291515- /O.EXA.KSHV.FF.A.0002.000000T0000Z-210429T2100Z/ /00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/ Hempstead-Nevada-Miller-Lafayette-Columbia-Camp-Morris-Cass-Wood- Upshur- Including the cities of Hawkins, Magnolia, Winnsboro, Stamps, Mineola, Hughes Springs, Naples, Hope, Linden, Daingerfield, Gilmer, Lone Star, Lewisville, Queen City, Atlanta, Quitman, Omaha, Prescott, Big Sandy, Texarkana, Pittsburg, and Bradley 205 AM CDT Thu Apr 29 2021 ...FLASH FLOOD WATCH IN EFFECT THROUGH THIS AFTERNOON... The National Weather Service in Shreveport has expanded the * Flash Flood Watch to include portions of southwest Arkansas and northeast Texas, including the following areas, in southwest Arkansas, Columbia, Hempstead, Lafayette, Miller and Nevada. In northeast Texas, Camp, Cass, Morris, Upshur and Wood. * Through this afternoon * Rainfall totals of 2 to 4 inches, with isolated higher amounts possible. * Flooding may occur in urban and poor drainage areas. Heavy rainfall may also cause flooding of creeks, streams, and rivers. PRECAUTIONARY/PREPAREDNESS ACTIONS... A Flash Flood Watch means that conditions may develop that lead to Flash Flooding. Flash Flooding is a very dangerous situation. You should monitor later forecasts and be prepared to take action should Flash Flood Warnings be issued. && $$ ARZ050-051-059-OKZ077-TXZ096-097-108-109-291515- /O.CON.KSHV.FF.A.0002.000000T0000Z-210429T2100Z/ /00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/ Sevier-Howard-Little River-McCurtain-Red River-Bowie-Franklin-Titus- Including the cities of Nashville, Texarkana, Broken Bow, Bogata, De Queen, Ashdown, Clarksville, Mineral Springs, Dierks, Mount Pleasant, Mount Vernon, and Idabel 205 AM CDT Thu Apr 29 2021 ...FLASH FLOOD WATCH REMAINS IN EFFECT THROUGH THIS AFTERNOON... The Flash Flood Watch continues for * Portions of southwest Arkansas...southeast Oklahoma and northeast Texas, including the following areas, in southwest Arkansas, Howard, Little River and Sevier. In southeast Oklahoma, McCurtain. In northeast Texas, Bowie, Franklin, Red River and Titus. * Through this afternoon * Rainfall totals of 2 to 4 inches, with isolated higher amounts possible. * Flooding may occur in urban and poor drainage areas. Heavy rainfall may also cause flooding of creeks, streams, and rivers. PRECAUTIONARY/PREPAREDNESS ACTIONS... A Flash Flood Watch means that conditions may develop that lead to Flash Flooding. Flash Flooding is a very dangerous situation. You should monitor later forecasts and be prepared to take action should Flash Flood Warnings be issued. && $$ 05
042 WGUS64 KSHV 291856 FFASHV Flood Watch National Weather Service Shreveport LA 156 PM CDT Thu Apr 29 2021 ARZ050-051-059>061-070>072-OKZ077-TXZ096-097-108>112-124-125-292000- /O.CAN.KSHV.FF.A.0002.000000T0000Z-210429T2100Z/ /00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/ Sevier-Howard-Little River-Hempstead-Nevada-Miller-Lafayette- Columbia-McCurtain-Red River-Bowie-Franklin-Titus-Camp-Morris-Cass- Wood-Upshur- Including the cities of Hawkins, Ashdown, Magnolia, Mount Pleasant, Clarksville, Winnsboro, Stamps, Mineola, Hughes Springs, Naples, Hope, Linden, Broken Bow, Daingerfield, Gilmer, Nashville, Lone Star, Lewisville, Mineral Springs, Queen City, Atlanta, Quitman, Mount Vernon, Idabel, Omaha, De Queen, Prescott, Big Sandy, Texarkana, Bogata, Pittsburg, Bradley, and Dierks 156 PM CDT Thu Apr 29 2021 ...FLASH FLOOD WATCH IS CANCELLED... The Flash Flood Watch for portions of southwest Arkansas...southeast Oklahoma and northeast Texas, including the following areas, in southwest Arkansas, Columbia, Hempstead, Howard, Lafayette, Little River, Miller, Nevada and Sevier. In southeast Oklahoma, McCurtain. In northeast Texas, Bowie, Camp, Cass, Franklin, Morris, Red River, Titus, Upshur and Wood has been cancelled. Flooding is no longer expected to pose a threat. Please continue to heed remaining road closures. $$ 13
The office that day
Everything else NWS Shreveport, LA issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Apr 28, 2:03 AM CDT | Lake Wind Advisory | SHV | Angelina, Bowie, Camp, Cass, Cherokee, Franklin and 15 more | 17 hr |
| Apr 28, 9:15 AM CDT | River Flood Warning | SHV | Smith, Wood | 47 hr |
| Apr 28, 10:23 AM CDT | River Flood Warning | SHV | Franklin, Morris, Red River, Titus | 6 days |
Nearby
Flash Flood Watches in Texas, 2021Flash Flood Watches in Arkansas, 2021Flash Flood Watches in Oklahoma, 2021Every flash 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.