Alert archive / Mississippi / Frost Advisories in 2021
Frost Advisory 7, NWS Memphis, TN
NWS Memphis, TN issued this frost advisory at Nov 12, 2021, 3:57 AM CST for Lee County, Phillips County, Arkansas; 22 counties in Mississippi. It took effect at Nov 13, 2021, 12:00 AM CST. It was in force for 4 hr.
The area
The counties it named.
The facts
- Issued
- Nov 12, 2021, 3:57 AM CST (09:57 UTC)
- In effect from
- Nov 13, 2021, 12:00 AM CST
- Expired
- Nov 13, 2021, 4:20 AM CST
- In force
- 4 hr
- Issued by
- NWS Memphis, TN
All 24 counties
Lee County, AR, Phillips County, AR, Alcorn County, MS, Benton County, MS, Calhoun County, MS, Chickasaw County, MS, Coahoma County, MS, DeSoto County, MS, Itawamba County, MS, Lafayette County, MS, Lee County, MS, Marshall County, MS, Monroe County, MS, Panola County, MS, Pontotoc County, MS, Prentiss County, MS, Quitman County, MS, Tallahatchie County, MS, Tate County, MS, Tippah County, MS, Tishomingo County, MS, Tunica County, MS, Union County, MS, Yalobusha County, MS
The radar
The Memphis radar (KNQA), 109 km from the middle of the area, began a volume at 09:59 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
Little Rock, AR (KLZK), launched 00:00Z, 10.0 hours before the alert went out and 64 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
- 0 J/kg
- Mixed-layer CIN
- No buoyant parcel
- Mixed-layer LCL
- 2065 m above ground
- 0-6 km bulk shear
- 65 kt
- 0-1 km storm-relative helicity
- 4 m²/s²
- 0-3 km storm-relative helicity
- 83 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted.
703 WWUS74 KMEG 120957 NPWMEG URGENT - WEATHER MESSAGE National Weather Service Memphis TN 357 AM CST Fri Nov 12 2021 MSZ002>006-009-013>017-021>024-121800- /O.NEW.KMEG.FR.Y.0007.211113T0600Z-211113T1400Z/ /O.CON.KMEG.FG.Y.0018.000000T0000Z-211112T1400Z/ Marshall-Benton MS-Tippah-Alcorn-Tishomingo-Prentiss-Lafayette- Union-Pontotoc-Lee MS-Itawamba-Yalobusha-Calhoun-Chickasaw-Monroe- Including the cities of Holly Springs, Ashland, Ripley MS, Corinth, Iuka, Booneville, Oxford, New Albany, Pontotoc, Tupelo, Fulton, Water Valley, Coffeeville, Bruce, Calhoun City, Houston, Okolona, Amory, and Aberdeen 357 AM CST Fri Nov 12 2021 ...DENSE FOG ADVISORY REMAINS IN EFFECT UNTIL 8 AM CST THIS MORNING... ...FROST ADVISORY IN EFFECT FROM MIDNIGHT TONIGHT TO 8 AM CST SATURDAY... * WHAT... For the Dense Fog Advisory, visibility less than one quarter mile in dense fog. For the Frost Advisory, temperatures as low as 33 will result in frost formation. * WHERE...Portions of North Mississippi. * WHEN...For the Dense Fog Advisory, until 8 AM CST this morning. For the Frost Advisory, from midnight tonight to 8 AM CST Saturday. * IMPACTS...Frost could kill sensitive outdoor vegetation if left uncovered. Hazardous driving conditions due to low visibility. PRECAUTIONARY/PREPAREDNESS ACTIONS... Take steps now to protect tender plants from the cold. If driving, slow down, use your headlights, and leave plenty of distance ahead of you. && $$ ARZ049-058-MSZ001-007-008-010>012-020-121800- /O.NEW.KMEG.FR.Y.0007.211113T0600Z-211113T1400Z/ Lee AR-Phillips-DeSoto-Tunica-Tate-Coahoma-Quitman-Panola- Tallahatchie- Including the cities of Marianna, Helena, West Helena, Southaven, Olive Branch, Tunica, Senatobia, Clarksdale, Marks, Batesville, and Charleston 357 AM CST Fri Nov 12 2021 ...FROST ADVISORY IN EFFECT FROM MIDNIGHT TONIGHT TO 8 AM CST SATURDAY... * WHAT...Temperatures as low as 33 will result in frost formation. * WHERE...In Mississippi, DeSoto, Tunica, Tate, Coahoma, Quitman, Panola and Tallahatchie Counties. In Arkansas, Lee AR and Phillips Counties. * WHEN...From midnight tonight to 8 AM CST Saturday. * IMPACTS...Frost could kill sensitive outdoor vegetation if left uncovered. PRECAUTIONARY/PREPAREDNESS ACTIONS... Take steps now to protect tender plants from the cold. && $$ SJM
4 follow-up statements
511 WWUS74 KMEG 121357 NPWMEG URGENT - WEATHER MESSAGE National Weather Service Memphis TN 757 AM CST Fri Nov 12 2021 MSZ002>006-009-013>017-021>024-122200- /O.CAN.KMEG.FG.Y.0018.000000T0000Z-211112T1400Z/ /O.CON.KMEG.FR.Y.0007.211113T0600Z-211113T1400Z/ Marshall-Benton MS-Tippah-Alcorn-Tishomingo-Prentiss-Lafayette- Union-Pontotoc-Lee MS-Itawamba-Yalobusha-Calhoun-Chickasaw-Monroe- Including the cities of Holly Springs, Ashland, Ripley MS, Corinth, Iuka, Booneville, Oxford, New Albany, Pontotoc, Tupelo, Fulton, Water Valley, Coffeeville, Bruce, Calhoun City, Houston, Okolona, Amory, and Aberdeen 757 AM CST Fri Nov 12 2021 ...FROST ADVISORY REMAINS IN EFFECT FROM MIDNIGHT TONIGHT TO 8 AM CST SATURDAY... ...DENSE FOG ADVISORY IS CANCELLED... * WHAT...Temperatures as low as 33 will result in frost formation. * WHERE...Portions of North Mississippi. * WHEN...From midnight tonight to 8 AM CST Saturday. * IMPACTS...Frost could kill sensitive outdoor vegetation if left uncovered. Hazardous driving conditions due to low visibility. PRECAUTIONARY/PREPAREDNESS ACTIONS... Take steps now to protect tender plants from the cold. && $$ ARZ049-058-MSZ001-007-008-010>012-020-122200- /O.CON.KMEG.FR.Y.0007.211113T0600Z-211113T1400Z/ Lee AR-Phillips-DeSoto-Tunica-Tate-Coahoma-Quitman-Panola- Tallahatchie- Including the cities of Marianna, Helena, West Helena, Southaven, Olive Branch, Tunica, Senatobia, Clarksdale, Marks, Batesville, and Charleston 757 AM CST Fri Nov 12 2021 ...FROST ADVISORY REMAINS IN EFFECT FROM MIDNIGHT TONIGHT TO 8 AM CST SATURDAY... * WHAT...Temperatures as low as 33 will result in frost formation. * WHERE...In Mississippi, DeSoto, Tunica, Tate, Coahoma, Quitman, Panola and Tallahatchie Counties. In Arkansas, Lee AR and Phillips Counties. * WHEN...From midnight tonight to 8 AM CST Saturday. * IMPACTS...Frost could kill sensitive outdoor vegetation if left uncovered. PRECAUTIONARY/PREPAREDNESS ACTIONS... Take steps now to protect tender plants from the cold. && $$ SJM
661 WWUS74 KMEG 122014 NPWMEG URGENT - WEATHER MESSAGE National Weather Service Memphis TN 214 PM CST Fri Nov 12 2021 ARZ049-058-MSZ001>017-020>024-130415- /O.CON.KMEG.FR.Y.0007.211113T0600Z-211113T1400Z/ Lee AR-Phillips-DeSoto-Marshall-Benton MS-Tippah-Alcorn- Tishomingo-Tunica-Tate-Prentiss-Coahoma-Quitman-Panola-Lafayette- Union-Pontotoc-Lee MS-Itawamba-Tallahatchie-Yalobusha-Calhoun- Chickasaw-Monroe- Including the cities of Marianna, Helena, West Helena, Southaven, Olive Branch, Holly Springs, Ashland, Ripley MS, Corinth, Iuka, Tunica, Senatobia, Booneville, Clarksdale, Marks, Batesville, Oxford, New Albany, Pontotoc, Tupelo, Fulton, Charleston, Water Valley, Coffeeville, Bruce, Calhoun City, Houston, Okolona, Amory, and Aberdeen 214 PM CST Fri Nov 12 2021 ...FROST ADVISORY REMAINS IN EFFECT FROM MIDNIGHT TONIGHT TO 8 AM CST SATURDAY... * WHAT...Temperatures as low as 33 will result in frost formation. * WHERE...North Mississippi and portions of East Arkansas. * WHEN...From midnight tonight to 8 AM CST Saturday. * IMPACTS...Frost could kill sensitive outdoor vegetation if left uncovered. PRECAUTIONARY/PREPAREDNESS ACTIONS... Take steps now to protect tender plants from the cold. && $$
239 WWUS74 KMEG 130342 NPWMEG URGENT - WEATHER MESSAGE National Weather Service Memphis TN 942 PM CST Fri Nov 12 2021 ARZ049-058-MSZ001>017-020>024-131400- /O.CON.KMEG.FR.Y.0007.211113T0600Z-211113T1400Z/ Lee AR-Phillips-DeSoto-Marshall-Benton MS-Tippah-Alcorn- Tishomingo-Tunica-Tate-Prentiss-Coahoma-Quitman-Panola-Lafayette- Union-Pontotoc-Lee MS-Itawamba-Tallahatchie-Yalobusha-Calhoun- Chickasaw-Monroe- Including the cities of Marianna, Helena, West Helena, Southaven, Olive Branch, Holly Springs, Ashland, Ripley MS, Corinth, Iuka, Tunica, Senatobia, Booneville, Clarksdale, Marks, Batesville, Oxford, New Albany, Pontotoc, Tupelo, Fulton, Charleston, Water Valley, Coffeeville, Bruce, Calhoun City, Houston, Okolona, Amory, and Aberdeen 942 PM CST Fri Nov 12 2021 ...FROST ADVISORY REMAINS IN EFFECT UNTIL 8 AM CST SATURDAY... * WHAT...Temperatures as low as 33 will result in frost formation. * WHERE...Portions of North Mississippi and East Arkansas. * WHEN...Until 8 AM CST Saturday. * IMPACTS...Frost could kill sensitive outdoor vegetation if left uncovered. PRECAUTIONARY/PREPAREDNESS ACTIONS... Take steps now to protect tender plants from the cold. && $$
168 WWUS74 KMEG 131020 NPWMEG URGENT - WEATHER MESSAGE National Weather Service Memphis TN 420 AM CST Sat Nov 13 2021 MSZ003>006-009-013>017-021>024-131830- /O.CAN.KMEG.FR.Y.0007.000000T0000Z-211113T1400Z/ /O.NEW.KMEG.FZ.W.0008.211114T0600Z-211114T1400Z/ Benton MS-Tippah-Alcorn-Tishomingo-Prentiss-Lafayette-Union- Pontotoc-Lee MS-Itawamba-Yalobusha-Calhoun-Chickasaw-Monroe- Including the cities of Ashland, Ripley MS, Corinth, Iuka, Booneville, Oxford, New Albany, Pontotoc, Tupelo, Fulton, Water Valley, Coffeeville, Bruce, Calhoun City, Houston, Okolona, Amory, and Aberdeen 420 AM CST Sat Nov 13 2021 ...FREEZE WARNING IN EFFECT FROM MIDNIGHT TONIGHT TO 8 AM CST SUNDAY... ...FROST ADVISORY IS CANCELLED... * WHAT...Sub-freezing temperatures as low as 31 expected. * WHERE...Portions of North Mississippi. * WHEN...From midnight tonight to 8 AM CST Sunday. * IMPACTS...Frost and freeze conditions will kill crops, other sensitive vegetation and possibly damage unprotected outdoor plumbing. PRECAUTIONARY/PREPAREDNESS ACTIONS... Take steps now to protect tender plants from the cold. To prevent freezing and possible bursting of outdoor water pipes they should be wrapped, drained, or allowed to drip slowly. Those that have in-ground sprinkler systems should drain them and cover above- ground pipes to protect them from freezing. && $$ MSZ002-008-011-012-020-131830- /O.CAN.KMEG.FR.Y.0007.000000T0000Z-211113T1400Z/ /O.NEW.KMEG.FR.Y.0008.211114T0600Z-211114T1400Z/ Marshall-Tate-Quitman-Panola-Tallahatchie- Including the cities of Holly Springs, Senatobia, Marks, Batesville, and Charleston 420 AM CST Sat Nov 13 2021 ...FROST ADVISORY IN EFFECT FROM MIDNIGHT TONIGHT TO 8 AM CST SUNDAY... ...FROST ADVISORY IS CANCELLED FOR THIS MORNING... * WHAT...Temperatures as low as 33 will result in frost formation. * WHERE...Marshall, Tate, Quitman, Panola and Tallahatchie Counties. * WHEN...From midnight tonight to 8 AM CST Sunday. * IMPACTS...Frost could kill sensitive outdoor vegetation if left uncovered. PRECAUTIONARY/PREPAREDNESS ACTIONS... Take steps now to protect tender plants from the cold. && $$ ARZ049-058-MSZ001-007-010-131130- /O.CAN.KMEG.FR.Y.0007.000000T0000Z-211113T1400Z/ Lee AR-Phillips-DeSoto-Tunica-Coahoma- Including the cities of Marianna, Helena, West Helena, Southaven, Olive Branch, Tunica, and Clarksdale 420 AM CST Sat Nov 13 2021 ...FROST ADVISORY IS CANCELLED... The Frost Advisory for east-central Arkansas and northwest Mississippi has been cancelled. $$ SJM
The office that day
Everything else NWS Memphis, TN issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Nov 11, 9:24 PM CST | Dense Fog Advisory | MEG | Alcorn, Benton, Calhoun, Chickasaw, Itawamba, Lafayette and 9 more | 11 hr |
Nearby
Frost Advisories in Mississippi, 2021Frost Advisories in Arkansas, 2021Every frost advisory 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.