Alert archive / Mississippi / Severe Thunderstorm Warnings in 2000
Severe Thunderstorm Warning 153, NWS Jackson, MS
NWS Jackson, MS issued this severe thunderstorm warning at Mar 18, 2000, 10:00 AM CST for Covington County, Lamar County, Mississippi. It was in force for 45 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
- Mar 18, 2000, 10:00 AM CST (16:00 UTC)
- Expired
- Mar 18, 2000, 10:45 AM CST
- In force
- 45 min
- Issued by
- NWS Jackson, MS
- Area
- Whole counties
Counties Covington County, MS, Lamar County, MS
The nearest sounding before it
Jackson, MS (KJAN), launched 12:00Z, 4.0 hours before the alert went out and 113 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
- 0 J/kg
- Mixed-layer CIN
- No buoyant parcel
- Mixed-layer LCL
- 1142 m above ground
- 0-6 km bulk shear
- 50 kt
- 0-1 km storm-relative helicity
- 186 m²/s²
- 0-3 km storm-relative helicity
- 267 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted, in the capitals the NWS used until 2016.
000 WUUS54 KJAN 181604 COR SVRJAN MSC031-073-181645- BULLETIN - EAS ACTIVATION REQUESTED SEVERE THUNDERSTORM WARNING...CORRECTED AREA MODIFIERS NATIONAL WEATHER SERVICE JACKSON MS 1000 AM CST SAT MAR 18 2000 THE NATIONAL WEATHER SERVICE IN JACKSON HAS ISSUED A * SEVERE THUNDERSTORM WARNING FOR... SOUTHERN COVINGTON COUNTY IN SOUTHEAST MISSISSIPPI NORTHERN LAMAR COUNTY IN SOUTHEAST MISSISSIPPI * UNTIL 1045 AM CST * AT 957 AM CST...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A SEVERE THUNDERSTORM 5 MILES SOUTH OF SUMRALL...OR ABOUT 11 MILES WEST OF HATTIESBURG...MOVING NORTHEAST AT 25 MPH. THIS THUNDERSTORM IS CAPABLE OF PRODUCING LARGE HAIL WHICH MAY DAMAGE PROPERTY. TAKE SHELTER IN A STURDY BUILDING. AVOID WINDOWS. 82
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.
NWS Jackson, MS wrote its last area forecast discussion before this severe thunderstorm warning went out at Mar 18, 3:25 AM CST, 6 hours 35 minutes earlier.
Area forecast discussion, Mar 18, 3:25 AM CST, 6 hours 35 minutes before
AREA FORECAST DISCUSSION...CORRECTED NATIONAL WEATHER SERVICE JACKSON MS 325 AM CST SAT MAR 18 2000 LATEST IR IMAGES SHOWING WEAKENING SHORTWAVE PULLING OUT OF AR WHILE NEXT SYSTEM BEGINNING TO TAKE SHAPE OVER PH TX. ALL MODELS IN GENERAL AGREEMENT WITH THE RAPID DEVELOPMENT OF SYSTEM DROPPING SE FROM TX WITH THE AVN BEING A LITTLE FASTER AND AT THE SAME TIME HIGHER ON THE QPF. AS SYSTEM DIGS AND ASSOCIATED SURFACE LOW DEEPENS OVER TX TODAY...LOW LEVEL FLOW WILL BECOME MORE SOUTHERLY AND SUBSTANTIALLY INCREASE IN EVER TIGHTENING PRESSURE GRADIENT. AS THIS OCCURS...SIGNIFICANT VERTICAL WARM AIR ADVECTION WILL OCCUR AND SERVE TO MOISTEN AND COOL THE 850-700 MB LAYER WITH LAPSE RATES AROUND 7 C/KM BY NOON. ALSO... SURFACE TEMPS CLIMBING INTO THE MID 70S WILL ALLOW CAPES TO RANGE FROM 1000-2000 J/KG ACROSS THE CWFA. COMBINE THIS WITH INCREASING UPPER DIVERGENCE DUE TO FAVORABELE UPPER JET STRUCTURE AND...AGREE WITH SPC...MAY HAVE SOME STORMS BECOMING SEVERE. EXPECT SQUALL LINE TO GET GOING OVER E TX THIS EVENING AHEAD OF SURFACE COLD FRONT AND PUSH E ACROSS LA OVERNIGHT. LOSS OF SURFACE WARMTH OVERNIGHT SHOULD LIMIT SEVERE THREAT...BUT HEAVY RAIN WILL BE OF CONCERN AS PRECIPITABLE WATERS OVER 1 INCH SHOULD MAKE FOR VERY EFFICIENT RAIN PRODUCERS. AHEAD OF THE LINE OVER THE CWFA FOR THE MAJORITY OF THE NIGHT...SCATTERED WARM ADVECTION SHOWERS AND THUNDERSTORMS WILL BE THE RULE WITH THE LINE APPROACHING THE RIVER BY 12Z. IT IS AROUND THIS TIME THAT THE AVN RACES THINGS E...WHILE THE ETA/NGM MAINTAIN SOME INSTABILITY AND PRECIP BEHIND THE SQUALL LINE AND AHEAD OF THE FRONT WHICH SHOULD BE MOVING ACROSS E AR/E LA SUN MORNING. WILL MAINTAIN HIGH POPS FOR ENTIRE CWFA SUNDAY BUT WORD MAINLY MORNING IN THE W. QPF DISCUSSION: MAIN PRECIP FOCUS FIRST 18 HOURS WILL BE SCATTERED THUNDERSTORMS...THEN SQUALL LINE EXPECTED TO ENTER CWFA CLOSE TO 12Z SUNDAY. ALTHOUGH BRIEF...LOCALIZED HEAVY RAIN POSSIBLE WITH STORMS TODAY...WILL BROADBRUSH LIGHT BASIN AVERAGES FOR FIRST 18 HOURS TO ACCOUNT FOR SCATTERED NATURE OF STORMS. WILL HIT LAST SIX HOURS HARDER /UP TO AN INCH WEST OF THE RIVER/ AS SQUALL LINE INVADES. JAN 75/61/66/45 5982 MEI 74/61/67/47 5794 .JAN... MS...NONE. AR...NONE. LA...NONE. 26
The office that day
Everything else NWS Jackson, MS issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Mar 18, 2:18 PM CST | Severe Thunderstorm Warning | JAN | Clarke | 27 min |
| Mar 18, 2:54 PM CST | Severe Thunderstorm Warning | JAN | Lawrence | 51 min |
| Mar 18, 3:33 PM CST | Severe Thunderstorm Warning | JAN | Jefferson Davis | 42 min |
| Mar 18, 4:33 PM CST | Severe Thunderstorm Warning | JAN | Franklin | 42 min |
| Mar 18, 4:43 PM CST | Severe Thunderstorm Warning | JAN | Jasper | 47 min |
Nearby
Severe Thunderstorm Warnings in Mississippi, 2000Every severe thunderstorm warning in 2000
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.