Alert archive / Arkansas / Severe Thunderstorm Watches in 1997

Severe Thunderstorm Watch 21

January 22, 199733 counties in Arkansas

The Storm Prediction Center issued this severe thunderstorm watch at Jan 22, 1997, 1:15 AM CST for 33 counties in Arkansas. It was in force for 6 hr.

The area

The outline as issued.

The facts

Issued: Jan 22, 1997, 1:15 AM CST (07:15 UTC)
Expired: Jan 22, 1997, 7:00 AM CST
In force: 6 hr
Issued by: the Storm Prediction Center

All 33 counties

Clark County, AR, Cleburne County, AR, Cleveland County, AR, Conway County, AR, Crawford County, AR, Dallas County, AR, Faulkner County, AR, Franklin County, AR, Garland County, AR, Grant County, AR, Hot Spring County, AR, Howard County, AR, Jackson County, AR, Jefferson County, AR, Johnson County, AR, Lincoln County, AR, Logan County, AR, Lonoke County, AR, Montgomery County, AR, Perry County, AR, Pike County, AR, Polk County, AR, Pope County, AR, Prairie County, AR, Pulaski County, AR, Saline County, AR, Scott County, AR, Sebastian County, AR, Sevier County, AR, Van Buren County, AR, White County, AR, Woodruff County, AR, Yell County, AR

The radar

The Little Rock radar (KLZK), 97 km from the middle of the area, began a volume at 07:17 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.

Warnings issued inside it

2 tornado, severe thunderstorm and flash flood warnings for its counties while it was in force.

Issued	Product	Office	Counties	Lasted
Jan 22, 2:33 AM CST	Severe Thunderstorm Warning	LZK	Conway, Faulkner	62 min
Jan 22, 3:03 AM CST	Severe Thunderstorm Warning	LZK	White	62 min

The nearest sounding before it

Shreveport, LA (KSHV), launched 00:00Z, 7.3 hours before the alert went out and 232 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-p

Temperature in red, dew point in green, the mixed-layer parcel dashed.

Hodograph

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: 1 J/kg
Mixed-layer CIN: -188 J/kg
Mixed-layer LCL: 586 m above ground
0-6 km bulk shear: 31 kt
0-1 km storm-relative helicity: 280 m²/s²
0-3 km storm-relative helicity: 368 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.0

Open this sounding in Storm Lab

The text

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

588 
WWUS9 KMKC 220641
SEL1  
MKC WW 220641
ARZ000-221300-

BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WATCH NUMBER 21
NATIONAL WEATHER SERVICE KANSAS CITY MO
1241 AM CST WED JAN 22 1997

A...THE STORM PREDICTION CENTER HAS ISSUED A
SEVERE THUNDERSTORM WATCH FOR

   A LARGE PART OF ARKANSAS                           

EFFECTIVE THIS WEDNESDAY MORNING UNTIL 700 AM CST.

LARGE HAIL...DANGEROUS LIGHTNING AND DAMAGING THUNDERSTORM WINDS
ARE POSSIBLE IN THESE AREAS.


THE SEVERE THUNDERSTORM WATCH AREA IS ALONG AND 90 STATUTE MILES
EAST AND WEST OF A LINE FROM 50 MILES SOUTH OF HOT SPRINGS ARKANSAS
TO 70 MILES NORTH NORTHWEST OF LITTLE ROCK ARKANSAS.

REMEMBER...A SEVERE THUNDERSTORM WATCH MEANS CONDITIONS ARE
FAVORABLE FOR SEVERE THUNDERSTORMS IN AND CLOSE TO THE WATCH AREA. 
PERSONS IN THESE AREAS SHOULD BE ON THE LOOKOUT FOR THREATENING
WEATHER CONDITIONS AND LISTEN FOR LATER STATEMENTS AND POSSIBLE
WARNINGS.
$$

C...A FEW SVR TSTMS WITH HAIL SFC AND ALF TO 1 3/4 INCHES.  EXTRM
TURBC AND SFC WIND GUSTS TO 65 KNOTS.  A FEW CBS WITH MAX TOPS TO
420.  MEAN WIND VECTOR 23540.

D...STG TSTMS CONT TO DVLP AND INTSFY FM EXTRM ERN OK INTO W CNTRL
AR.  CNVTN IS ASSOCD WITH STG MID LVL JET STREAK SHOWN IN WATER
VAPOR IMAGERY MOVG ACRS ERN OK.  STG DYNAMIC FORCING AND EWD MOVG
FNTL BNDRY ARE PROVIDING FVRBL UPWARD MOTION WITHIN RGN OF MRGL/MDT
INSTBY.  STG SFC WIND GUSTS AND LARGE HAIL ARE PSBL WITH STGR
CELLS.

E...OTR TSTMS...  CONT..WW 20..

...WEISS

SPC that day

Everything else SPC issued on the same UTC day.

Issued	Product	Office	Counties	Lasted
Jan 21, 11:15 PM CST	Severe Thunderstorm Watch	SPC	Baxter, Benton, Boone, Carroll, Madison, Marion and 3 more	6 hr

Nearby

Severe Thunderstorm Watches in Arkansas, 1997 Every severe thunderstorm watch in 1997

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.