Alert archive / Arkansas / Tornado Warnings in 1999

Tornado Warning 40, NWS Memphis, TN

January 21, 1999Cross County, Arkansas

NWS Memphis, TN issued this tornado warning at Jan 21, 1999, 8:47 PM CST for Cross County, Arkansas. It was in force for 48 min. No storm report in the archive falls inside the area while it was in force.

The area

The counties it named.

The facts

Issued
Jan 21, 1999, 8:47 PM CST (02:47 UTC)
Expired
Jan 21, 1999, 9:35 PM CST
In force
48 min
Issued by
NWS Memphis, TN
Area
Whole counties

County Cross County, AR

The radar

The Memphis radar (KNQA), 82 km from the middle of the area, began a volume at 02:48 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 watch it was issued in

The SPC watch in force over the same counties when this warning went out.

IssuedProductOfficeLasted
Jan 21, 2:30 PM CSTTornado WatchSPC7 hr

The nearest sounding before it

Little Rock, AR (KLZK), launched 00:00Z, 2.8 hours before the alert went out and 91 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.

Skew-T log-pSkew-T log-p diagram, Little Rock, AR at 00:00Z on 1999-01-22Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 725 joules per kilogram.LCLLFCEL10008507005003002001001 km2 km3 km6 km9 km12 km15 km-30°-20°-10°0°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Little Rock, AR at 00:00Z on 1999-01-22The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 185 square meters per square second.1939587897Sfc1 km3 km6 km9 kmRMLM
The wind turning with height, colored by layer: ground to 1 km, 1 to 3 km, 3 to 6 km, 6 to 10 km.
Mixed-layer CAPE
725 J/kg
Mixed-layer CIN
-18 J/kg
Mixed-layer LCL
1259 m above ground
0-6 km bulk shear
51 kt
0-1 km storm-relative helicity
185 m²/s²
0-3 km storm-relative helicity
283 m²/s²
Significant tornado parameter
0.8
Supercell composite
3.9

Open this sounding in Storm Lab

The text

As transmitted, in the capitals the NWS used until 2016.

000 
TTAA00 KMEM 220247 RRA
TORMEM
ARC037-220335-

BULLETIN - EAS ACTIVATION REQUESTED
TORNADO WARNING
NATIONAL WEATHER SERVICE MEMPHIS TN
847 PM CST THU JAN 21 1999


THE NATIONAL WEATHER SERVICE IN MEMPHIS HAS ISSUED A

* TORNADO WARNING FOR...
  CROSS COUNTY IN NORTHEASTERN ARKANSAS

* UNTIL 935 PM CST

* AT 845 PM CST... DOPPLER RADAR INDICATED A TORNADO BETWEEN
PALESTINE AND FORREST CITY IN ST FRANCIS COUNTY ARKANSAS.  THE STORM
WAS MOVING NORTHEAST AT 45 MPH.


* THE TORNADO WILL BE NEAR...
WYNNE BY 900 PM
PARKIN BY 905 PM

.A TORNADO WATCH IS ALSO IN EFFECT FOR THE WARNED AREA. REMEMBER...
SEVERE THUNDERSTORMS CAN AND OCCASIONALLY DO PRODUCE TORNADOES WITH
LITTLE OR NO ADVANCE WARNING. REMAIN CALM BUT BE ALERT TO RAPIDLY
CHANGING WEATHER CONDITIONS.

The office that day

Everything else NWS Memphis, TN issued on the same UTC day.

IssuedProductOfficeCountiesLasted
Jan 21, 6:16 PM CSTTornado WarningMEGSt. Francis34 min
Jan 21, 6:31 PM CSTSevere Thunderstorm WarningMEGPoinsett49 min
Jan 21, 6:34 PM CSTSevere Thunderstorm WarningMEGLawrence61 min
Jan 21, 6:37 PM CSTTornado WarningMEGCrittenden48 min
Jan 21, 6:45 PM CSTTornado WarningMEGClay50 min
Jan 21, 6:49 PM CSTTornado WarningMEGMississippi46 min
Jan 21, 7:00 PM CSTTornado WarningMEGLawrence, Randolph50 min
Jan 21, 7:29 PM CSTTornado WarningMEGClay46 min
Jan 21, 7:32 PM CSTTornado WarningMEGCraighead, Poinsett48 min
Jan 21, 7:53 PM CSTTornado WarningMEGGreene47 min
Jan 21, 8:07 PM CSTSevere Thunderstorm WarningMEGLee48 min
Jan 21, 8:21 PM CSTFlash Flood WarningMEGLawrence, Randolph119 min
Jan 21, 8:27 PM CSTTornado WarningMEGClay48 min
Jan 21, 8:32 PM CSTTornado WarningMEGSt. Francis48 min
Jan 21, 8:43 PM CSTTornado WarningMEGCraighead, Greene, Lawrence47 min
Jan 21, 8:58 PM CSTTornado WarningMEGCrittenden47 min
Jan 21, 9:12 PM CSTTornado WarningMEGMississippi, Poinsett48 min
Jan 21, 9:28 PM CSTTornado WarningMEGClay, Greene, Randolph47 min
Jan 21, 9:35 PM CSTTornado WarningMEGCraighead, Lawrence50 min
Jan 21, 9:58 PM CSTTornado WarningMEGMississippi47 min
Jan 21, 10:08 PM CSTTornado WarningMEGCraighead47 min
Jan 21, 10:08 PM CSTTornado WarningMEGPoinsett47 min
Jan 21, 10:15 PM CSTTornado WarningMEGClay50 min
Jan 21, 10:20 PM CSTFlash Flood WarningMEGCross, Poinsett, St. Francis4 hr
Jan 21, 10:20 PM CSTFlash Flood WarningMEGCraighead, Greene, Lawrence, Randolph4 hr
Jan 21, 10:20 PM CSTFlash Flood WarningMEGClay4 hr
Jan 21, 11:51 PM CSTSevere Thunderstorm WarningMEGCraighead, Mississippi, Poinsett44 min
Jan 22, 2:56 AM CSTFlash Flood WarningMEGCraighead, Mississippi, Poinsett4 hr
Jan 22, 2:56 AM CSTFlash Flood WarningMEGCross4 hr
Jan 22, 3:09 AM CSTSevere Thunderstorm WarningMEGSt. Francis46 min
Jan 22, 5:23 AM CSTSevere Thunderstorm WarningMEGCrittenden47 min

Nearby

Tornado Warnings in Arkansas, 1999Every tornado warning in 1999Tornadoes in 1999

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.