Widespread heavy rain was observed across a large portion of Arkansas. This brought on an increase in river levels along the Cache.
Every event with a place to put it. Tap one for its entry below.
Deaths and injuries are direct and indirect together, as the offices filed them. Damage is property and crops in the dollars of the year, not adjusted for inflation, and only where an office estimated it.
The episode as NWS LZK wrote it up.
Widespread heavy rain was observed across a large portion of Arkansas. This brought on an increase in river levels along the Cache. At Patterson, minor flooding was observed.
The local office's own words before the first event, as it sent them, from the Iowa Environmental Mesonet's archive of National Weather Service text.
NWS Little Rock, AR wrote its last area forecast discussion before the first event at Nov 30, 5:48 PM CST, 6 hours 12 minutes earlier.
Area Forecast Discussion National Weather Service Little Rock AR 548 PM CST Mon Nov 30 2020 .AVIATION...01/00Z TAF CYCLE VFR conds wl prevail thru the PD as high pressure prevails. Sfc winds wl diminish this evening, eventually veering to the S/SE at 5 to 10 kts ovr most areas by Tue aftn. /44/ && .PREV DISCUSSION...(ISSUED 254 PM CST Mon Nov 30 2020) SHORT TERM...Tonight Through Tuesday Night Surface high pressure will slide along the Texas coast to the Louisiana coast tonight and bring clear skies and light winds to Arkansas. As a result, the coldest air of the season will settle over the state tonight and a Freeze Warning has been issued for parts of central and southeast sections...and should be the last one for the fall. With dew points in the teens, temperatures will be able to fall into the 20s across the area tonight. High pressure will continue to dominate the Arkansas weather Tuesday and Tuesday night. Temperatures will be below normal for the most part especially at night. Lows Tuesday night will be in the mid 20s to id 30s. Highs on Tuesday will be in the lower to mid 50s. LONG TERM...Wednesday Through Monday The upper low that will be responsible for the rain and winter precipitation the middle of the week is entering the Pacific NW area today. This upper trough will move through the Rockies by Tuesday evening and into the central and southern Plains as a closed upper low by Wednesday morning. Long term model solutions are starting to come together with the evolution of this upper low, but there are still some uncertainties at this point. Once the system moves through the Rockies we expect things to become much clearer. At this time, it looks like a surface high will migrate through the southern U.S. and northern GoM through the first half of the week. Once the high moves into the southeastern U.S. it will begin transporting plenty of gulf moisture into TX/LA/AR. The upper low will move into the southern Plains late Tuesday through the overnight hours Wednesday while a surface low develops in the same region, drawing in the gulf moisture as this low strengthens. By Wednesday morning, rain chances will begin increasing across southwest AR and expand into much of the rest of the state by Wednesday afternoon as the upper and surface lows track ENE. Liquid precipitation seems most likely through this period. Into Wednesday night and the overnight hours early Thursday morning, as surface temperatures fall to near freezing, beginning in NW AR first, then over much of the WNW half of the state, rain will become a wintry mix. As temperatures reach subfreezing temperatures, frozen precipitation is expected, with only minor accumulations expected over NW AR at this time. The system will continue tracking ENE Thursday. With temperatures warming to above freezing a few hours after sunrise, precipitation will become liquid, starting in the SSE parts of the state and gradually warming and becoming liquid in the NNW. Dry low level air will cut off precipitation from SW AR and into central and southern AR during the day Thursday. The upper and surface lows will weaken and lose organization by Thursday evening, helping to cut off precipitation. The models vary on the handling of this but all indicate these features will transition to either an open wave or a reorganized upper low. In either case, the system will weaken just as it is exiting the region. Liquid precip will transition to frozen or a wintry mix in some northern counties late Thursday through Friday morning, as the upper low continues to spin overhead and the weakening system exits to the east. All precipitation looks to move out of the state by Friday morning around sunrise. Rainfall accumulations with this system will range from near an inch in SW AR and between a half to 1 inch elsewhere in the state. High pressure will build into the region the rest of the week. High temperatures through the period will be in the 40s and 50s with lows in the 20s and 30s. && .LZK Watches/Warnings/Advisories... Freeze Warning from 9 PM this evening to 9 AM CST Tuesday FOR Arkansas-Bradley-Calhoun-Cleveland-Dallas-Desha-Drew-Garland- Grant-Hot Spring-Jefferson-Lincoln-Lonoke-Monroe-Ouachita- Prairie-Pulaski-Saline. &&
Hazardous Weather Outlook...UPDATED National Weather Service Little Rock AR 735 PM CST Mon Nov 30 2020 ARZ003>008-012>017-021>025-030>034-037>047-052>057-062>069-011100- Boone-Marion-Baxter-Fulton-Sharp-Randolph-Newton-Searcy-Stone- Izard-Independence-Lawrence-Johnson-Pope-Van Buren-Cleburne- Jackson-Logan-Conway-Faulkner-White-Woodruff-Scott-Yell-Perry- Polk-Montgomery-Garland-Saline-Pulaski-Lonoke-Prairie-Monroe-Pike- Clark-Hot Spring-Grant-Jefferson-Arkansas-Dallas-Cleveland- Lincoln-Desha-Ouachita-Calhoun-Bradley-Drew- 735 PM CST Mon Nov 30 2020 This Hazardous Weather Outlook is for a Large Part of Arkansas. .DAY ONE...Tonight Tonight will be the coldest night of the Fall season for most locations with low temperatures in the 20s expected. A few areas will even see the mercury dip into the teens. This will bring an end to the growing season to locations where temperatures have not already dropped below freezing. .DAYS TWO THROUGH SEVEN...Tuesday Through Sunday Rain will increase across the area beginning Wednesday as another system affects the area. Temperatures will support a mix of rain and snow over portions of western, northwestern, northern, and central Arkansas Wednesday night through Thursday with minor snow accumulation possible in the Ozarks. This could cause localized minor impacts, primarily to travel, but widespread impacts remain unlikely. Please continue to monitor the latest forecasts for updates. .Spotter Information Statement... Spotter activation will not be needed. && Visit NWS Little Rock on the web. Go to http://weather.gov/lzk. 44
The national radar mosaic for the moment the first event began.
1 flood. Local standard time, as filed.
Heavy rains brought flooding to the Cache River at Patterson in early Decemeber.
After NWS Directive 10-1605, the rules offices file Storm Data by.
Every storm in Arkansas in 2020Every state in 2020This day in weather historyWarnings in Arkansas, December 2020
NOAA National Centers for Environmental Information, Storm Events Database, compiled from the National Weather Service’s monthly Storm Data. Complete through 2026-06; NCEI adds each month about 75 days after it ends and revises past years a few times a year. Rebuilt 2026-09-24. Each event’s entry at NCEI: 931627.