Alert archive / Missouri / Flash Flood Watches in 2021
Flash Flood Watch 5, NWS St. Louis, MO
NWS St. Louis, MO issued this flash flood watch at Jun 30, 2021, 3:30 AM CDT for 14 counties in Missouri. It took effect at Jun 30, 2021, 12:00 PM CDT. It was in force for 24 hr.
The area
The counties it named.
The facts
- Issued
- Jun 30, 2021, 3:30 AM CDT (08:30 UTC)
- In effect from
- Jun 30, 2021, 12:00 PM CDT
- Expired
- Jul 1, 2021, 12:07 PM CDT
- In force
- 24 hr
- Issued by
- NWS St. Louis, MO
- Flood severity
- None
Counties Audrain County, MO, Boone County, MO, Callaway County, MO, Cole County, MO, Crawford County, MO, Franklin County, MO, Gasconade County, MO, Moniteau County, MO, Monroe County, MO, Montgomery County, MO, Osage County, MO, Shelby County, MO, Warren County, MO, Washington County, MO
The radar
The St Louis radar (KLSX), 91 km from the middle of the area, began a volume at 08:29 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
Springfield, MO (KSGF), launched 00:00Z, 8.5 hours before the alert went out and 274 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
- 1477 J/kg
- Mixed-layer CIN
- -13 J/kg
- Mixed-layer LCL
- 993 m above ground
- 0-6 km bulk shear
- 6 kt
- 0-1 km storm-relative helicity
- 58 m²/s²
- 0-3 km storm-relative helicity
- 120 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted.
309 WGUS63 KLSX 300830 FFALSX URGENT - IMMEDIATE BROADCAST REQUESTED Flood Watch National Weather Service St Louis MO 330 AM CDT Wed Jun 30 2021 MOZ026-034-041-042-047>051-059-060-062-072-073-302330- /O.NEW.KLSX.FF.A.0005.210630T1700Z-210701T1200Z/ /00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/ Shelby MO-Monroe MO-Boone MO-Audrain MO-Moniteau MO-Cole MO-Osage MO-Callaway MO-Montgomery MO-Gasconade MO-Warren MO-Franklin MO- Crawford MO-Washington MO- Including the cities of Columbia, Mexico, Union, Washington, Jefferson City, Sullivan, and Fulton 330 AM CDT Wed Jun 30 2021 ...FLASH FLOOD WATCH IN EFFECT FROM NOON CDT TODAY THROUGH THURSDAY MORNING... The National Weather Service in St Louis has issued a * Flash Flood Watch for Portions of central, east central, and northeast Missouri, including the following areas, in central Missouri, Audrain MO, Boone MO, Callaway MO, Cole MO, Moniteau MO and Osage MO. In east central Missouri, Crawford MO, Franklin MO, Gasconade MO, Montgomery MO, Warren MO and Washington MO. In northeast Missouri, Monroe MO and Shelby MO. * From Noon CDT today through Thursday morning. * Thunderstorms containing heavy rainfall and high rainfall rates can be expected this afternoon and tonight. This heavy rainfall may occur repeatedly over the same locations, including those that have previously received significant rainfall over the past several days leading to localized flash flooding. * Excessive runoff may result in flooding of rivers, creeks, streams, and other low-lying and flood-prone locations. PRECAUTIONARY/PREPAREDNESS ACTIONS... You should monitor later forecasts and be prepared to take action should Flash Flood Warnings be issued. && $$ GKS
5 follow-up statements
948 WGUS63 KLSX 301933 FFALSX Flood Watch National Weather Service St Louis MO 233 PM CDT Wed Jun 30 2021 MOZ026-034-041-042-047>051-059-060-062-072-073-011045- /O.CON.KLSX.FF.A.0005.000000T0000Z-210701T1200Z/ /00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/ Shelby MO-Monroe MO-Boone MO-Audrain MO-Moniteau MO-Cole MO-Osage MO-Callaway MO-Montgomery MO-Gasconade MO-Warren MO-Franklin MO- Crawford MO-Washington MO- Including the cities of Columbia, Mexico, Union, Washington, Jefferson City, Sullivan, and Fulton 233 PM CDT Wed Jun 30 2021 ...FLASH FLOOD WATCH REMAINS IN EFFECT THROUGH THURSDAY MORNING... The Flash Flood Watch continues for * Portions of central, east central, and northeast Missouri, including the following areas, in central Missouri, Audrain MO, Boone MO, Callaway MO, Cole MO, Moniteau MO and Osage MO. In east central Missouri, Crawford MO, Franklin MO, Gasconade MO, Montgomery MO, Warren MO and Washington MO. In northeast Missouri, Monroe MO and Shelby MO. * Through Thursday morning. * Thunderstorms containing heavy rainfall and high rainfall rates are possible through tonight. This heavy rainfall may occur repeatedly over the same locations, including those that have previously received significant rainfall over the past several days leading to localized flash flooding. * Excessive runoff may result in flooding of rivers, creeks, streams, and other low-lying and flood-prone locations. PRECAUTIONARY/PREPAREDNESS ACTIONS... You should monitor later forecasts and be prepared to take action should Flash Flood Warnings be issued. && $$ Gosselin
692 WGUS63 KLSX 010826 FFALSX Flood Watch National Weather Service St Louis MO 326 AM CDT Thu Jul 1 2021 MOZ026-034-041-042-047>051-059-060-062-072-073-011200- /O.CON.KLSX.FF.A.0005.000000T0000Z-210701T1200Z/ /00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/ Shelby MO-Monroe MO-Boone MO-Audrain MO-Moniteau MO-Cole MO-Osage MO-Callaway MO-Montgomery MO-Gasconade MO-Warren MO-Franklin MO- Crawford MO-Washington MO- Including the cities of Columbia, Mexico, Union, Washington, Jefferson City, Sullivan, and Fulton 326 AM CDT Thu Jul 1 2021 ...FLASH FLOOD WATCH REMAINS IN EFFECT UNTIL 7 AM CDT THIS MORNING... The Flash Flood Watch continues for * Portions of central, east central, and northeast Missouri, including the following areas, in central Missouri, Audrain MO, Boone MO, Callaway MO, Cole MO, Moniteau MO and Osage MO. In east central Missouri, Crawford MO, Franklin MO, Gasconade MO, Montgomery MO, Warren MO and Washington MO. In northeast Missouri, Monroe MO and Shelby MO. * Until 7 AM CDT this morning. * Showers and thunderstorms containing heavy rainfall and high rainfall rates can be expected into Thursday morning. This heavy rainfall may occur repeatedly over the same locations, including those that have previously received significant rainfall over the past several days leading to localized flash flooding. * Excessive runoff may result in flooding of rivers, creeks, streams, and other low-lying and flood-prone locations. PRECAUTIONARY/PREPAREDNESS ACTIONS... You should monitor later forecasts and be prepared to take action should Flash Flood Warnings be issued. && $$ GKS
975 WGUS63 KLSX 011150 FFALSX URGENT - IMMEDIATE BROADCAST REQUESTED Flood Watch National Weather Service St Louis MO 650 AM CDT Thu Jul 1 2021 MOZ026-034-042-011300- /O.EXP.KLSX.FF.A.0005.000000T0000Z-210701T1200Z/ /00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/ Shelby MO-Monroe MO-Audrain MO- Including the cities of Mexico 650 AM CDT Thu Jul 1 2021 ...FLASH FLOOD WATCH WILL EXPIRE AT 7 AM CDT THIS MORNING... The Flash Flood Watch for Portions of central and northeast Missouri, including the following areas, in central Missouri, Audrain MO. In northeast Missouri, Monroe MO and Shelby MO. will expire at 7 AM CDT this morning. Flooding is no longer expected to pose a threat. Please continue to heed remaining road closures. $$ MOZ041-047>051-059-060-062-072-073-011800- /O.EXT.KLSX.FF.A.0005.000000T0000Z-210701T1800Z/ /00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/ Boone MO-Moniteau MO-Cole MO-Osage MO-Callaway MO-Montgomery MO- Gasconade MO-Warren MO-Franklin MO-Crawford MO-Washington MO- Including the cities of Columbia, Union, Washington, Jefferson City, Sullivan, and Fulton 650 AM CDT Thu Jul 1 2021 ...FLASH FLOOD WATCH NOW IN EFFECT UNTIL 1 PM CDT THIS AFTERNOON... The Flash Flood Watch is now in effect for * Portions of central and east central Missouri, including the following areas, in central Missouri, Boone MO, Callaway MO, Cole MO, Moniteau MO and Osage MO. In east central Missouri, Crawford MO, Franklin MO, Gasconade MO, Montgomery MO, Warren MO and Washington MO. * Until 1 PM CDT this afternoon. * Showers and thunderstorms containing heavy rainfall and high rainfall rates can be expected into Thursday morning. This heavy rainfall may occur repeatedly over the same locations, including those that have previously received significant rainfall over the past several days leading to localized flash flooding. * Excessive runoff may result in flooding of rivers, creeks, streams, and other low-lying and flood-prone locations. PRECAUTIONARY/PREPAREDNESS ACTIONS... You should monitor later forecasts and be prepared to take action should Flash Flood Warnings be issued. && $$ BRC
259 WGUS63 KLSX 011417 FFALSX Flood Watch National Weather Service St Louis MO 917 AM CDT Thu Jul 1 2021 MOZ041-047>051-060-011530- /O.CAN.KLSX.FF.A.0005.000000T0000Z-210701T1800Z/ /00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/ Boone MO-Moniteau MO-Cole MO-Osage MO-Callaway MO-Montgomery MO- Warren MO- Including the cities of Jefferson City, Columbia, and Fulton 917 AM CDT Thu Jul 1 2021 ...FLASH FLOOD WATCH IS CANCELLED... The Flash Flood Watch for Portions of central and east central Missouri, including the following areas, in central Missouri, Boone MO, Callaway MO, Cole MO, Moniteau MO and Osage MO. In east central Missouri, Montgomery MO and Warren MO. has been cancelled. The Flood Watch is cancelled. $$ MOZ059-062-072-073-011800- /O.CON.KLSX.FF.A.0005.000000T0000Z-210701T1800Z/ /00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/ Gasconade MO-Franklin MO-Crawford MO-Washington MO- Including the cities of Union, Sullivan, and Washington 917 AM CDT Thu Jul 1 2021 ...FLASH FLOOD WATCH REMAINS IN EFFECT UNTIL 1 PM CDT THIS AFTERNOON... The Flash Flood Watch continues for * A portion of east central Missouri, including the following areas, Crawford MO, Franklin MO, Gasconade MO and Washington MO. * Until 1 PM CDT this afternoon. * Showers containing heavy rainfall and high rainfall rates can be expected this morning. * Excessive runoff may result in flooding of rivers, creeks, streams, and other low-lying and flood-prone locations. PRECAUTIONARY/PREPAREDNESS ACTIONS... You should monitor later forecasts and be prepared to take action should Flash Flood Warnings be issued. && $$ Gosselin
766 WGUS63 KLSX 011707 FFALSX Flood Watch National Weather Service St Louis MO 1207 PM CDT Thu Jul 1 2021 MOZ059-062-072-073-011815- /O.CAN.KLSX.FF.A.0005.000000T0000Z-210701T1800Z/ /00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/ Gasconade MO-Franklin MO-Crawford MO-Washington MO- Including the cities of Union, Sullivan, and Washington 1207 PM CDT Thu Jul 1 2021 ...FLASH FLOOD WATCH IS CANCELLED... The Flash Flood Watch for A portion of east central Missouri, including the following areas, Crawford MO, Franklin MO, Gasconade MO and Washington MO. has been cancelled. The Flood Watch is cancelled. Flooding is no longer expected to pose a threat. Please continue to heed remaining road closures. $$ Gosselin
The office that day
Everything else NWS St. Louis, MO issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jun 29, 8:41 PM CDT | River Flood Warning | LSX | Lewis | 30 hr |
| Jun 30, 5:15 AM CDT | Areal Flood Advisory | LSX | Boone, Moniteau | 3 hr |
| Jun 30, 5:44 AM CDT | River Flood Warning | LSX | Lincoln | 49 hr |
| Jun 30, 5:59 AM CDT | Areal Flood Advisory | LSX | Boone, Callaway | 3 hr |
| Jun 30, 7:01 AM CDT | Areal Flood Advisory | LSX | Montgomery | 3 hr |
| Jun 30, 7:49 AM CDT | Areal Flood Advisory | LSX | Lincoln, Montgomery, Warren | 3 hr |
| Jun 30, 4:03 PM CDT | Areal Flood Advisory | LSX | Lewis, Marion | 3 hr |
| Jun 30, 4:34 PM CDT | Areal Flood Advisory | LSX | Marion | 46 min |
| Jun 30, 5:20 PM CDT | Flash Flood Warning | LSX | Marion | 2 hr |
| Jun 30, 6:00 PM CDT | River Flood Warning | LSX | Marion | 22 hr |
| Jun 30, 6:00 PM CDT | River Flood Warning | LSX | Marion | 19 hr |
Nearby
Flash Flood Watches in Missouri, 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.