LSX extends time of Flood Warning for Meramec River near Arnold [MO] till Apr 23, 1:00 AM CDT

https://mesonet.agron.iastate.edu/vtec/f/2026-O-EXT-KLSX-FL-W-0035_2026-04-21T14:01Z

#mowx #ilwx

KLSX Flood Warning #35

Jefferson, St. Louis

Iowa Environmental Mesonet

LSX issues Area Forecast Discussion (AFD) at Apr 21, 6:07 AM CDT

https://mesonet.agron.iastate.edu/p.php?pid=202604211107-KLSX-FXUS63-AFDLSX

#mowx #ilwx

IEM :: AFD from NWS LSX

AFD issued by NWS LSX at 21 Apr 2026 11:07 UTC

National Weather Service - Springfield, MO #MOwx #SGF #NWS #WX

#EAX #MOwx 143
FLUS43 KEAX 211007
HWOEAX

Hazardous Weather Outlook
National Weather Service Kansas City/Pleasant Hill MO
0507 AM CDT Tue Apr 21 2026

KSZ025-057-060-102>105-MOZ001>008-011>017-020>025-028>033-037>040-
043>046-053-054-221007-
Atchison KS-Miami-Linn KS-Doniphan-Leavenworth-Wyandotte-Johnson KS-
Atchison MO-Nodaway-Worth-Gentry-Harrison-Mercer-Putnam-Schuyler-
Holt-Andrew-De Kalb-Daviess-Grundy-Sullivan-Adair-Buchanan-Clinton-
Caldwell-Livingston-Linn MO- https://mesonet.agron.iastate.edu/p.php?pid=202604211007-KEAX-FLUS43-HWOEAX

IEM :: HWO from NWS EAX

HWO issued by NWS EAX at 21 Apr 2026 10:07 UTC

National Weather Service - St. Louis, MO #MOwx #LSX #NWS #WX

#EAX #MOwx 292
FXUS63 KEAX 210917
AFDEAX

Area Forecast Discussion
National Weather Service Kansas City/Pleasant Hill MO
417 AM CDT Tue Apr 21 2026

.KEY MESSAGES...

- Above normal temperatures and breezy south southwesterly winds
are expected today through Thursday.

- Shower and thunderstorm chances return Thursday afternoon into
Friday as a cold front is projected to move through the
region.

- Strong to severe thunderstorms and locally moderate
https://mesonet.agron.iastate.edu/p.php?pid=202604210917-KEAX-FXUS63-AFDEAX

IEM :: AFD from NWS EAX

AFD issued by NWS EAX at 21 Apr 2026 09:17 UTC

#EAX #MOwx 253
WUUS48 KWNS 210901
PTSD48

DAY 4-8 CONVECTIVE OUTLOOK AREAL OUTLINE
NWS STORM PREDICTION CENTER NORMAN OK
0359 AM CDT TUE APR 21 2026

VALID TIME 241200Z - 291200Z

SEVERE WEATHER OUTLOOK POINTS DAY 4

... ANY SEVERE ...

0.15 32249605 32679697 33299739 33889752 34709723 35939635
36769485 37069410 37309268 36999148 36479120 35429123
34539187 33609255 32799343 32239410 32099452 32099536
32249605
&&

SEVERE WEATHER OUTLOOK POINTS https://www.spc.noaa.gov/products/exper/day4-8/archive/2026/day4-8_20260421.html

The Storm Prediction Center issues Day 7 15% Any Severe Convective Risk at Apr 21, 8:59z for portions of LSX

https://www.spc.noaa.gov/products/exper/day4-8/archive/2026/day4-8_20260421.html

#mowx #ilwx

Excessive Rainfall Outlook (ERO) Interactive Display

The Weather Prediction Center issues Day 3 Marginal Risk Excessive Rainfall Outlook at Apr 21, 7:57z for portions of LSX

https://www.wpc.ncep.noaa.gov/qpf/excessive_rainfall_outlook_ero.php

#mowx #ilwx

Excessive Rainfall Outlook (ERO) Interactive Display