Alert archive / Arkansas / Severe Thunderstorm Warnings in 2021
Severe Thunderstorm Warning 136, NWS Memphis, TN
NWS Memphis, TN issued this severe thunderstorm warning at May 9, 2021, 4:50 PM CDT for 4 counties in Arkansas; Tunica County, Mississippi. It was in force for 40 min. No storm report in the archive falls inside the area while it was in force.
The area
The outline as issued.
The facts
- Issued
- May 9, 2021, 4:50 PM CDT (21:50 UTC)
- Expired
- May 9, 2021, 5:30 PM CDT
- In force
- 40 min
- Issued by
- NWS Memphis, TN
- Area
- Storm-based polygon
- Hail
- 1.0 in
- Wind
- 60.0 mph
Counties Crittenden County, AR, Cross County, AR, Lee County, AR, St. Francis County, AR, Tunica County, MS
The radar
The Memphis radar (KNQA), 89 km from the middle of the area, began a volume at 21:51 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.
Did it verify
Not verified. The Iowa Environmental Mesonet's Cow found no qualifying storm report inside this severe thunderstorm warning while it was in force. That is not proof nothing happened: reports are thin where few people live.
Cow counts a report within 15 km of the polygon while the warning was in force: a tornado for a tornado warning; hail of 1 inch or more, a gust of 58 mph or more or wind damage for a severe thunderstorm warning; a flash flood report for a flash flood warning.
The watch it was issued in
The SPC watch in force over the same counties when this warning went out.
| Issued | Product | Office | Lasted |
|---|---|---|---|
| May 9, 2:27 PM CDT | Severe Thunderstorm Watch | SPC | 7 hr |
The nearest sounding before it
Little Rock, AR (KLZK), launched 12:00Z, 9.8 hours before the alert went out and 66 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
- 203 J/kg
- Mixed-layer CIN
- -439 J/kg
- Mixed-layer LCL
- 759 m above ground
- 0-6 km bulk shear
- 26 kt
- 0-1 km storm-relative helicity
- 446 m²/s²
- 0-3 km storm-relative helicity
- 571 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted.
748
WUUS54 KMEG 092150
SVRMEG
ARC035-037-077-123-MSC143-092230-
/O.NEW.KMEG.SV.W.0136.210509T2150Z-210509T2230Z/
BULLETIN - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Warning
National Weather Service Memphis TN
450 PM CDT Sun May 9 2021
The National Weather Service in Memphis has issued a
* Severe Thunderstorm Warning for...
Lee County in eastern Arkansas...
St. Francis County in eastern Arkansas...
Southwestern Crittenden County in eastern Arkansas...
Southeastern Cross County in eastern Arkansas...
Northwestern Tunica County in northwestern Mississippi...
* Until 530 PM CDT.
* At 450 PM CDT, a severe thunderstorm was located near Haynes, or
near Palestine, moving southeast at 30 mph.
HAZARD...60 mph wind gusts and quarter size hail.
SOURCE...Radar indicated.
IMPACT...Hail damage to vehicles is expected. Expect wind damage
to roofs, siding, and trees.
* Locations impacted include...
West Memphis, Forrest City, Marion, Wynne, Marianna, Hughes,
Madison, Palestine, Village Creek State Park, Caldwell, Edmondson,
Colt, Widener, Rondo, Aubrey, Anthonyville, Haynes, Jennette,
Simsboro and Brickeys.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
For your protection move to an interior room on the lowest floor of a
building.
&&
LAT...LON 3521 9089 3518 9024 3459 9049 3461 9058
3464 9059 3465 9099
TIME...MOT...LOC 2150Z 302DEG 26KT 3491 9085
HAIL...1.00IN
WIND...60MPH
$$
SWB1 follow-up statement
043
WWUS54 KMEG 092222
SVSMEG
Severe Weather Statement
National Weather Service Memphis TN
522 PM CDT Sun May 9 2021
ARC035-037-077-123-MSC143-092232-
/O.EXP.KMEG.SV.W.0136.000000T0000Z-210509T2230Z/
Lee AR-St. Francis AR-Crittenden AR-Cross AR-Tunica MS-
522 PM CDT Sun May 9 2021
...THE SEVERE THUNDERSTORM WARNING FOR LEE...ST. FRANCIS...
SOUTHWESTERN CRITTENDEN...SOUTHEASTERN CROSS AND NORTHWESTERN TUNICA
COUNTIES WILL EXPIRE AT 530 PM CDT...
The storm which prompted the warning has weakened below severe
limits, and no longer poses an immediate threat to life or property.
Therefore, the warning will be allowed to expire.
A Severe Thunderstorm Watch remains in effect until 900 PM CDT for
eastern Arkansas...and northwestern Mississippi.
LAT...LON 3521 9089 3518 9024 3459 9049 3461 9058
3464 9059 3465 9099
TIME...MOT...LOC 2222Z 302DEG 26KT 3479 9062
$$
SWBWhat forecasters said that day
The local office's own words before this severe thunderstorm warning went out, as it sent them, from the Iowa Environmental Mesonet's archive of National Weather Service text.
NWS Memphis, TN wrote its last area forecast discussion before this severe thunderstorm warning went out at May 9, 3:48 PM CDT, 1 hour 2 minutes earlier.
Area forecast discussion, May 9, 3:48 PM CDT, 1 hour 2 minutes before
Area Forecast Discussion
National Weather Service Memphis TN
348 PM CDT Sun May 9 2021
.DISCUSSION...
Storms are finally starting to develop across the Mid South as a
front pushes into the forecast area. Looking at the immediate
short term...we expect storms to continue to develop and be rather
strong. Severe storms will be possible with large hail and
damaging winds being the main threats. We have already seen a few
reports of hail with earlier storms with less impressive
convection. Now that the storms have a better trigger they will be
able to take advantage of the steep lapse rates and instability.
Large hail...early on will be a big threat. A tornado risk exists
over the next few hours as initially storms are more cellular.
Storms should congeal into a lines and bowing segments as the
event goes on. This would suggest the the tornado threat will
decrease as time goes on...as well as the best low level helicity
will be moving east ahead of the main line of storms. A Severe
Thunderstorm Watch is in effect for a large part of the forecast
area this evening. This will not be a long event as most of the
storms should be out of the area by 10 PM.
Beyond tonight, the Mid South will remain on the cool side of a
stationary front extending through the Arklamiss. Rain may briefly
edge into east AR and west TN Tuesday night and Wednesday, ahead
of northern branch height falls. However, I have trimmed POPs
back a little bit for the next few days as guidance is coming in
just a little drier but its really not that big of a change from
previous forecast. Dry and relatively cool for the latter half of
the week, under northwest flow aloft. 13/MH
&&
.AVIATION...
First round of showers and thunderstorms will be exiting eastern
sections of the Mid-South soon. Periods of MVFR/VFR ceilings are
expected during the afternoon hours before the second wave of
thunderstorms move into the region late this afternoon and early
this evening. Ceilings should drop to IFR levels with this second
round of thunderstorms. Low clouds should remain over the region
late tonight behind the thunderstorms and continue into Monday
morning. Winds will be generally from the south at 10 to 15
knots with higher gusts before shifting to the northwest this
evening.
ARS
&&
.MEG WATCHES/WARNINGS/ADVISORIES...
AR...Wind Advisory until 5 PM CDT this afternoon for Clay-Craighead-
Crittenden-Cross-Greene-Lee AR-Mississippi-Phillips-
Poinsett-St. Francis.
MO...Wind Advisory until 5 PM CDT this afternoon for Dunklin-Pemiscot.
MS...Wind Advisory until 5 PM CDT this afternoon for Alcorn-Benton MS-
Coahoma-DeSoto-Marshall-Panola-Prentiss-Quitman-Tate-Tippah-
Tishomingo-Tunica.
TN...Wind Advisory until 5 PM CDT this afternoon for Benton TN-
Carroll-Chester-Crockett-Decatur-Dyer-Fayette-Gibson-
Hardeman-Hardin-Haywood-Henderson-Henry-Lake-Lauderdale-
Madison-McNairy-Obion-Shelby-Tipton-Weakley.
&&Hazardous weather outlook, May 9, 3:27 PM CDT, 1 hour 23 minutes before
Hazardous Weather Outlook National Weather Service Memphis TN 327 PM CDT Sun May 9 2021 ARZ009-018-026>028-035-036-048-049-058-MOZ113-115-MSZ001>017- 020>024-TNZ001>004-019>022-048>055-088>092-102230- Alcorn-Benton MS-Benton TN-Calhoun-Carroll-Chester-Chickasaw-Clay- Coahoma-Craighead-Crittenden-Crockett-Cross-DeSoto-Decatur- Dunklin-Dyer-Fayette-Gibson-Greene-Hardeman-Hardin-Haywood- Henderson-Henry-Itawamba-Lafayette-Lake-Lauderdale-Lee AR-Lee MS- Madison-Marshall-McNairy-Mississippi-Monroe-Obion-Panola-Pemiscot- Phillips-Poinsett-Pontotoc-Prentiss-Quitman-Shelby-St. Francis- Tallahatchie-Tate-Tippah-Tipton-Tishomingo-Tunica-Union-Weakley- Yalobusha- 327 PM CDT Sun May 9 2021 This hazardous weather outlook is for portions of East Arkansas... the Missouri Bootheel...North Mississippi...and West Tennessee. .DAY ONE...This Afternoon and Tonight A Severe Thunderstorm Watch has been issued. See website for details. Scattered thunderstorms will develop this evening along and ahead of a slow-moving cold front. These thunderstorms will be capable of producing large hail, damaging winds, and a few brief tornadoes. Localized flash flooding will be possible. .DAYS TWO THROUGH SEVEN...Monday through Saturday The probability for widespread hazardous weather is low. .SPOTTER INFORMATION STATEMENT... Spotter activation will be needed this evening.
In the hours before
Special weather statement, May 9, 11:24 AM CDT, 5 hours 26 minutes before
Special Weather Statement National Weather Service Memphis TN 1124 AM CDT Sun May 9 2021 MSZ009-014>017-091700- Itawamba MS-Pontotoc MS-Union MS-Lee MS-Prentiss MS- 1124 AM CDT Sun May 9 2021 ...A SIGNIFICANT WEATHER ADVISORY HAS BEEN ISSUED UNTIL NOON CDT FOR... Northwestern Itawamba County in northeastern Mississippi... Northeastern Pontotoc County in northeastern Mississippi... Central Union County in northeastern Mississippi... Northern Lee County in northeastern Mississippi... Southwestern Prentiss County in northeastern Mississippi... At 1123 AM CDT...a strong thunderstorm producing pea to dime size hail and winds 40 to 50 mph was located near Ecru, or near New Albany, moving east at 45 mph. Very heavy rain along with continuous cloud to ground lightning are also possible with this thunderstorm. People in northwestern Itawamba...northeastern Pontotoc...central Union...northern Lee and southwestern Prentiss Counties should monitor this storm closely. LAT...LON 3431 8907 3448 8911 3462 8850 3435 8845 TIME...MOT...LOC 1623Z 260DEG 41KT 3441 8900
Special weather statement, May 9, 3:01 PM CDT, 1 hour 49 minutes before
Special Weather Statement
National Weather Service Memphis TN
301 PM CDT Sun May 9 2021
ARZ028-MOZ115-TNZ019-020-048-092045-
Mississippi AR-Pemiscot MO-Lauderdale TN-Dyer TN-Gibson TN-
301 PM CDT Sun May 9 2021
...A SIGNIFICANT WEATHER ADVISORY HAS BEEN ISSUED UNTIL 345 PM CDT
FOR...
Northern Mississippi County in eastern Arkansas...
Southern Pemiscot County in southeastern Missouri...
North central Lauderdale County in western Tennessee...
Dyer County in western Tennessee...
Northwestern Gibson County in western Tennessee...
At 301 PM CDT...strong thunderstorms producing penny to pea size
hail and winds 45 mph was located along a line extending from near
Miston to near Leachville. Movement was east at 35 mph.
People in northern Mississippi...southern Pemiscot...north central
Lauderdale...Dyer and northwestern Gibson Counties should monitor
this storm closely.
LAT...LON 3613 8885 3585 8969 3594 9029 3600 9010
3600 8996 3604 8996 3618 8947
TIME...MOT...LOC 2001Z 268DEG 32KT 3613 8957 3596 9019
SWBSpecial weather statement, May 9, 3:35 PM CDT, 1 hour 15 minutes before
Special Weather Statement
National Weather Service Memphis TN
335 PM CDT Sun May 9 2021
ARZ026>028-092100-
Poinsett AR-Craighead AR-Mississippi AR-
335 PM CDT Sun May 9 2021
...A SIGNIFICANT WEATHER ADVISORY HAS BEEN ISSUED UNTIL 400 PM CDT
FOR...
Northwestern Poinsett County in eastern Arkansas...
Southeastern Craighead County in eastern Arkansas...
Northwestern Mississippi County in eastern Arkansas...
At 334 PM CDT...strong thunderstorms producing penny to pea size
hail and winds 45 mph was located along a line extending from
Monette to near Weiner. Movement was southeast at 10 mph.
Very heavy rain along with continuous cloud to ground lightning are
also possible with this thunderstorm.
People in northwestern Poinsett...southeastern Craighead and
northwestern Mississippi Counties should monitor this storm closely.
LAT...LON 3594 9029 3588 8989 3552 9082 3559 9104
3565 9104
TIME...MOT...LOC 2034Z 334DEG 9KT 3589 9033 3565 9097
SWBSpecial weather statement, May 9, 4:29 PM CDT, 21 minutes before
Special Weather Statement
National Weather Service Memphis TN
429 PM CDT Sun May 9 2021
TNZ004-021-022-092200-
Carroll TN-Benton TN-Henry TN-
429 PM CDT Sun May 9 2021
...A SIGNIFICANT WEATHER ADVISORY HAS BEEN ISSUED UNTIL 500 PM CDT
FOR...
Northeastern Carroll County in western Tennessee...
Central Benton County in western Tennessee...
Southern Henry County in western Tennessee...
At 429 PM CDT...a strong thunderstorm producing pea size hail or
larger and winds 45 to 55 mph was located near Routon, or 7 miles
east of McKenzie, moving east at 30 mph.
Very heavy rain along with continuous cloud to ground lightning are
also possible with this thunderstorm.
People in northeastern Carroll...central Benton and southern Henry
Counties should monitor this storm closely.
LAT...LON 3613 8792 3611 8794 3608 8796 3603 8800
3600 8800 3598 8802 3597 8802 3611 8849
3625 8845 3622 8795 3619 8794 3616 8792
TIME...MOT...LOC 2129Z 280DEG 24KT 3615 8837The office that day
Everything else NWS Memphis, TN issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| May 9, 7:28 AM CDT | Special Weather Statement | MEG | Clay, Greene | 32 min |
| May 9, 3:35 PM CDT | Special Weather Statement | MEG | Craighead | 25 min |
| May 9, 3:39 PM CDT | Severe Thunderstorm Warning | MEG | Craighead, Mississippi, Poinsett | 36 min |
| May 9, 3:47 PM CDT | Severe Thunderstorm Warning | MEG | Mississippi | 28 min |
| May 9, 3:55 PM CDT | Severe Thunderstorm Warning | MEG | Cross, Poinsett | 35 min |
| May 9, 4:01 PM CDT | Severe Thunderstorm Warning | MEG | Cross, St. Francis | 29 min |
| May 9, 4:17 PM CDT | Severe Thunderstorm Warning | MEG | Craighead, Mississippi, Poinsett | 28 min |
| May 9, 4:20 PM CDT | Severe Thunderstorm Warning | MEG | Cross, Lee, St. Francis | 40 min |
| May 9, 4:28 PM CDT | Tornado Warning | MEG | Lee, St. Francis | 32 min |
| May 9, 5:21 PM CDT | Severe Thunderstorm Warning | MEG | Lee | 24 min |
| May 8, 8:42 PM CDT | River Flood Warning | MEG | Monroe | 36 hr |
| May 8, 8:42 PM CDT | River Flood Warning | MEG | Monroe | 36 hr |
| May 9, 9:48 AM CDT | Special Weather Statement | MEG | Tate | 27 min |
| May 9, 10:14 AM CDT | Special Weather Statement | MEG | Panola | 31 min |
| May 9, 11:24 AM CDT | Special Weather Statement | MEG | Union | 36 min |
| May 9, 5:39 PM CDT | Severe Thunderstorm Warning | MEG | DeSoto, Panola, Quitman, Tate, Tunica | 36 min |
| May 9, 6:01 PM CDT | Severe Thunderstorm Warning | MEG | Lafayette, Marshall, Panola, Tate | 44 min |
| May 9, 6:31 PM CDT | Severe Thunderstorm Warning | MEG | Calhoun, Lafayette, Marshall, Pontotoc, Union | 44 min |
| May 9, 6:42 PM CDT | Tornado Warning | MEG | Lafayette, Marshall, Pontotoc, Union | 21 min |
Nearby
Severe Thunderstorm Warnings in Arkansas, 2021Severe Thunderstorm Warnings in Mississippi, 2021Every severe thunderstorm warning 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.