Alert archive / Louisiana / Severe Thunderstorm Warnings in 1990

Severe Thunderstorm Warning 12, NWS Shreveport, LA

January 20, 1990Franklin Parish, Madison Parish, Tensas Parish, Louisiana

NWS Shreveport, LA issued this severe thunderstorm warning at Jan 20, 1990, 12:48 AM CST for Franklin Parish, Madison Parish, Tensas Parish, Louisiana. It was in force for 57 min. 2 reports came from inside the area while it was in force.

The area

The counties it named, with what was reported inside it.

The facts

Issued
Jan 20, 1990, 12:48 AM CST (06:48 UTC)
Expired
Jan 20, 1990, 1:45 AM CST
In force
57 min
Issued by
NWS Shreveport, LA
Area
Whole counties

Counties Franklin Parish, LA, Madison Parish, LA, Tensas Parish, LA

The radar

The WSR-88D network and its archive begin in 1991, so there is no radar volume for this alert.

What was reported inside it

TimeReportWhereRemark
Jan 20, 1:10 AM CSTHail 1Franklin, LA
Jan 20, 1:40 AM CSTHail 1Madison, LA

NCEI Storm Data entries that began inside the alert's area while it was in force. Before 2003 the local storm report archive is thin, so this is the record of what happened rather than what was phoned in. Storm Data before 1996 records only tornadoes, thunderstorm wind and hail.

The nearest sounding before it

Jackson, MS (KJAN), launched 00:00Z, 6.8 hours before the alert went out and 127 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, Jackson, MS at 00:00Z on 1990-01-20Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 1 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, Jackson, MS at 00:00Z on 1990-01-20The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 200 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
1 J/kg
Mixed-layer CIN
No buoyant parcel
Mixed-layer LCL
929 m above ground
0-6 km bulk shear
45 kt
0-1 km storm-relative helicity
200 m²/s²
0-3 km storm-relative helicity
253 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.0

Open this sounding in Storm Lab

The text

The text of this product is not in the archive. The NWS text archive before 2002 is incomplete.

What 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.

In the hours before

Local storm report, Jan 19, 9:25 PM CST, 3 hours 23 minutes before
STORM REPORT
NATIONAL WEATHER SERVICE SHREVEPORT LA
920 PM CST FRI JAN 20 1990

REPORTS FOR  JAUNARY 20TH....NOT ALL REPORTS.

TIME 840      CNTY/PARISH
              LINCOLN      CONSIDERABLE WIND DAMAGE NEAR GRAMBLING
                           UNIVERSITY TO TREES POWER LIWES..SEVERAL
                           MOBILE JOMES.   ALSO WIND DAMAGE IN NORTH
                           WEST RUSTON TO MOBILE HOMES.

SAME STORM PRODUICED WIND DAMAGE ,IN PARTS OF RED RIVER...SABINE AND
NATCHITOCHES PARISH...HAIL UP TO ONE INCH IN DIAMETER HAS ALSO OCCURRED
WITH SOME OF THE STORMS THIS EVENING.
Special weather statement, Jan 19, 11:27 PM CST, 1 hour 21 minutes before
OKZ026-TXZ022-023-027-028-032-033-ARZ009-010-011-016-LAZ001-002-003-
004-005-006-192300-

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE SHREVEPORT LA
1125 PM CST FRI JAN 19 1990

...TORNADO WATCH HAS EXPIRED FOR EASTERN LOUISIANA...
...A FLASH FLOOD WATCH IN EFFECT FOR NORTH LOUISIANA EXCEPT FOR
THE NORTHWEST CORNER FOR TONIGHT...

AT 1115 PM CST WEATHER SERVICE IN SHREVEPORT SHOWED A LARGE
AREA OF SHOWERS AND THUNDERSTORMS..SOME PROUDCING VERY HEAVY
RAINFALL THAT COVERED MUCH OF NORTH LOUISIANA..SOUTHEAST ARKANSAS..
AND SOUTHEAST TEXAS SOUTHEAST OF A LINE FROM NEAR PINE BLUFF
SOUTHWEST TO NEAR EL DORADO ARKANSAS ACROSS NORTHWEST LOUISIANA
TO SHREVEPORT..AND INTO SOUTHEAST TEXAS TO NEAR LUFKIN.  WITHIN
THE LARGE RAIN MASS THE HEAVIER THUNDERSTORMS EXTENDED FROM NEAR
RAYVILLE SOUTHWEST TO NEAR COLUMBIA..AND TO NEAR DE RIDDER AND
FROM NEAR FARMERVILLE SOUTHWEST TO NEAR JONESBORO AND MANY LOUISIANA.
THE SHOWERS AND THUNDERSTORMS WERE MOVING TO THE NORTHEAST AT 30 MPH
AND WILL LIKELY PRODUCE HEAVY RAINFALL..DANGEROUS LIGHTNING..AND
STRONG AND GUSTY WINDS.

THE HEAVY RAINFALL HAS BEEN FALLING OVER AN AREA OF SATURATED
SOILS AND MAY CAUSE FLOODING OF STREETS..LOW LYING AND POOR
DRAINAGE AREAS. PERSONS SHOULD TRY TO AVOID WATER COVERED AREAS.
Special weather statement, Jan 20, 12:27 AM CST, 21 minutes before
TXZ028-032-033-ARZ009-010-011-016-LAZ001-002-003-
004-005-006-200730-

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE SHREVEPORT LA
1225 AM CST SAT JAN 20 1990

...A FLASH FLOOD WATCH IN EFFECT FOR NORTH LOUISIANA EXCEPT FOR
THE NORTHWEST CORNER FOR TONIGHT...

AT 1215 AM CST WEATHER SERVICE RADAR IN SHREVEPORT SHOWED A LARGE
AREA OF SHOWERS AND THUNDERSTORMS..SOME PROUDCING VERY HEAVY
RAINS..OVER SOUTHEAST ARKANSAS..WESTERN MISSISSIPPI..MUCH OF NORTH
AND CENTRAL LOUISISANA AND SOUTHEAST TEXAS. THE RAIN WAS GENERALLY
SOUTHEAST OF A LINE FROM NEAR PINE BLUFF SOUTHWEST TO EL DORADO
ARKANSAS ACROSS NORTHWEST LOUISIANA TO NEAR ARCADIA AND MANSFIELD
AND INTO SOUTHEAST TEXAS TO NEAR HOUSTON. WITHIN THE LARGE RAIN
MASS THE HEAVIER THUNDERSTORMS..WHICH WERE PRODUCING TORRENTIAL
RAINS..WERE INDICATED FROM NEAR MONROE SOUTH TO COLUMBIA AND JENA
LOUISIANA. MOVEMENT WAS TO THE NORTHEAST AT 40 MPH. THE STRONGER
STORMS WERE PRODUCING STRONG AND GUSTY WINDS..FREQUENT LIGHTNING..
AND VERY HEAVY RAINFALL.

PERSONS IN THE PATH OF THESE STORMS SHOULD BE ALERT..FOR THE NEXT
COUPLE OF HOURS OVER NORTHEAST LOUISIANA ESPECIALLY FROM MONROE
AND COLUMBIA EAST.

FLOODING THREAT REMAINS HIGH OVER NORTHERN LOUISIANA UNTIL THE
STORMS MOVE EAST OUT OF THE STATE.

The office that day

Everything else NWS Shreveport, LA issued on the same UTC day.

IssuedProductOfficeCountiesLasted
Jan 19, 6:25 PM CSTSevere Thunderstorm WarningSHVSabine65 min
Jan 19, 7:36 PM CSTSevere Thunderstorm WarningSHVBienville, Red River69 min
Jan 19, 7:45 PM CSTSevere Thunderstorm WarningSHVSabine90 min
Jan 19, 8:04 PM CSTSevere Thunderstorm WarningSHVLincoln, Union86 min
Jan 19, 8:04 PM CSTSevere Thunderstorm WarningSHVNatchitoches86 min
Jan 19, 9:19 PM CSTSevere Thunderstorm WarningSHVJackson, Natchitoches, Winn101 min
Jan 19, 9:19 PM CSTSevere Thunderstorm WarningSHVMorehouse, Ouachita101 min
Jan 20, 2:40 AM CSTFlash Flood WarningSHVMorehouse, Ouachita, Richland4 hr
Jan 20, 2:40 AM CSTFlash Flood WarningSHVCaldwell, Jackson, Winn4 hr
Jan 20, 2:40 AM CSTFlash Flood WarningSHVNatchitoches, Sabine4 hr

Nearby

Severe Thunderstorm Warnings in Louisiana, 1990Every severe thunderstorm warning in 1990

Sources

The product and its follow-ups from the Iowa Environmental Mesonet's archive of National Weather Service and Storm Prediction Center text; verification from NCEI's Storm Data; the sounding from the Mesonet's radiosonde archive.