Alert archive / Missouri / Tornado Watches in 1998

Tornado Watch 124

March 27, 19984 states

The Storm Prediction Center issued this tornado watch at Mar 27, 1998, 4:30 PM CST for 4 states. It was in force for 6 hr.

The area

The outline as issued.

The facts

Issued
Mar 27, 1998, 4:30 PM CST (22:30 UTC)
Expired
Mar 27, 1998, 10:00 PM CST
In force
6 hr
Issued by
the Storm Prediction Center
All 62 counties

Clay County, AR, Craighead County, AR, Crittenden County, AR, Cross County, AR, Greene County, AR, Jackson County, AR, Lawrence County, AR, Mississippi County, AR, Poinsett County, AR, Randolph County, AR, Sharp County, AR, Woodruff County, AR, Alexander County, IL, Bond County, IL, Calhoun County, IL, Clinton County, IL, Greene County, IL, Jackson County, IL, Jersey County, IL, Macoupin County, IL, Madison County, IL, Monroe County, IL, Montgomery County, IL, Perry County, IL, Randolph County, IL, Saint Clair County, IL, Washington County, IL, Bollinger County, MO, Butler County, MO, Cape Girardeau County, MO, Carter County, MO, City of Saint Louis, MO, Crawford County, MO, Dunklin County, MO, Franklin County, MO, Iron County, MO, Jefferson County, MO, Lincoln County, MO, Madison County, MO, New Madrid County, MO, Oregon County, MO, Pemiscot County, MO, Perry County, MO, Pike County, MO, Reynolds County, MO, Ripley County, MO, Saint Charles County, MO, Saint Francois County, MO, Saint Louis County, MO, Sainte Genevieve County, MO, Scott County, MO, Shannon County, MO, Stoddard County, MO, Warren County, MO, Washington County, MO, Wayne County, MO, Dyer County, TN, Fayette County, TN, Lake County, TN, Lauderdale County, TN, Shelby County, TN, Tipton County, TN

The radar

The Paducah radar (KPAH), 165 km from the middle of the area, began a volume at 22:30 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

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

IssuedProductOfficeCountiesLasted
Mar 27, 4:40 PM CSTSevere Thunderstorm WarningLSXFranklin, Jefferson, Saint Charles, Saint Louis50 min
Mar 27, 4:40 PM CSTSevere Thunderstorm WarningLSXLincoln50 min
Mar 27, 4:40 PM CSTSevere Thunderstorm WarningLSXCity of Saint Louis50 min
Mar 27, 4:53 PM CSTSevere Thunderstorm WarningLSXPike37 min
Mar 27, 4:57 PM CSTSevere Thunderstorm WarningLSXIron, Reynolds, Washington48 min
Mar 27, 5:10 PM CSTSevere Thunderstorm WarningLSXCalhoun, Greene, Jersey50 min
Mar 27, 5:26 PM CSTSevere Thunderstorm WarningLSXSaint Louis, City of Saint Louis49 min
Mar 27, 5:26 PM CSTSevere Thunderstorm WarningLSXSaint Charles49 min
Mar 27, 5:46 PM CSTSevere Thunderstorm WarningLSXMacoupin, Madison59 min
Mar 27, 6:03 PM CSTSevere Thunderstorm WarningMEGLawrence32 min
Mar 27, 6:07 PM CSTSevere Thunderstorm WarningMEGRandolph33 min
Mar 27, 6:19 PM CSTSevere Thunderstorm WarningLZKJackson, White, Woodruff46 min
Mar 27, 6:39 PM CSTSevere Thunderstorm WarningLSXBond, Montgomery51 min
Mar 27, 7:06 PM CSTSevere Thunderstorm WarningPAHButler, Stoddard, Wayne64 min
Mar 27, 7:06 PM CSTSevere Thunderstorm WarningPAHBollinger64 min
Mar 27, 7:18 PM CSTSevere Thunderstorm WarningLZKSharp47 min
Mar 27, 7:39 PM CSTSevere Thunderstorm WarningPAHPerry36 min
Mar 27, 7:49 PM CSTSevere Thunderstorm WarningPAHCape Girardeau41 min
Mar 27, 8:02 PM CSTSevere Thunderstorm WarningLSXRandolph28 min
Mar 27, 8:05 PM CSTSevere Thunderstorm WarningPAHRipley55 min
Mar 27, 8:21 PM CSTTornado WarningMEGCraighead34 min
Mar 27, 8:35 PM CSTSevere Thunderstorm WarningPAHButler, Wayne40 min
Mar 27, 8:43 PM CSTTornado WarningMEGDunklin32 min
Mar 27, 8:45 PM CSTTornado WarningPAHNew Madrid, Stoddard30 min
Mar 27, 9:55 PM CSTSevere Thunderstorm WarningPAHNew Madrid35 min
Mar 27, 9:58 PM CSTSevere Thunderstorm WarningMEGLawrence32 min

The nearest sounding before it

Little Rock, AR (KLZK), launched 12:00Z, 10.5 hours before the alert went out and 227 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 12:00Z on 1998-03-27Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 17 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 12:00Z on 1998-03-27The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 235 square meters per square second.19395878Sfc1 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
17 J/kg
Mixed-layer CIN
-2 J/kg
Mixed-layer LCL
606 m above ground
0-6 km bulk shear
30 kt
0-1 km storm-relative helicity
235 m²/s²
0-3 km storm-relative helicity
431 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.

538 
WWUS9 KMKC 272151
SEL4  
MKC WW 272151
MOZ000-ILZ000-TNZ000-ARZ000-280400-

BULLETIN - IMMEDIATE BROADCAST REQUESTED
TORNADO WATCH NUMBER 124
STORM PREDICTION CENTER NORMAN OK
351 PM CST FRI MAR 27 1998

THE STORM PREDICTION CENTER HAS ISSUED A
TORNADO WATCH FOR PORTIONS OF

   EASTERN MISSOURI                           
   WESTERN ILLINOIS                           
   WESTERN TENNESSEE                          
   NORTHEAST ARKANSAS                           

EFFECTIVE THIS FRIDAY AFTERNOON AND EVENING FROM 430 PM UNTIL 1000
PM CST.

TORNADOES...HAIL TO 1 INCHES IN DIAMETER...THUNDERSTORM WIND GUSTS
TO 80 MPH...AND DANGEROUS LIGHTNING ARE POSSIBLE IN THESE AREAS.

THE TORNADO WATCH AREA IS ALONG AND 60 STATUTE MILES EITHER SIDE OF
A LINE FROM 25 MILES WEST OF MEMPHIS TENNESSEE TO 40 MILES NORTH
NORTHWEST OF ALTON ILLINOIS.

REMEMBER...A TORNADO WATCH MEANS CONDITIONS ARE FAVORABLE FOR
TORNADOES AND 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.

OTHER WATCH INFORMATION...  CONTINUE...WW 123...

DISCUSSION...INTENSE SQUALL LINE CONTINUING TO MOVE RAPIDLY EWD
AHEAD OF STRONG UPPER TROF EJECTING ENEWD ACROSS CENTRAL PLAINS. 
PRIMARY THREAT WITH LINE WILL CONTINUE TO BE DAMAGING
WINDS...HOWEVER WIND PROFILES ARE FAVORABLE FOR ISOLATED SUPERCELLS
AND TORNADOES.


AVIATION...TORNADOES AND A FEW SEVERE THUNDERSTORMS WITH HAIL
SURFACE AND ALOFT TO 1 INCHES.  EXTREME TURBULENCE AND SURFACE WIND
GUSTS TO 70 KNOTS.  A FEW CUMULONIMBI WITH MAXIMUM TOPS TO 500. 
MEAN STORM MOTION VECTOR 23045.


...HALES

350,0912 392,0912 392,0891 350,0892

SPC that day

Everything else SPC issued on the same UTC day.

IssuedProductOfficeCountiesLasted
Mar 27, 2:00 PM CSTTornado WatchSPCBaxter, Boone, Clark, Cleburne, Cleveland, Conway and 25 more5 hr

Nearby

Tornado Watches in Missouri, 1998Tornado Watches in Illinois, 1998Tornado Watches in Arkansas, 1998Every tornado watch in 1998

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.