Alert archive / Texas / Severe Thunderstorm Warnings in 2008
Severe Thunderstorm Warning 347, NWS Shreveport, LA
NWS Shreveport, LA issued this severe thunderstorm warning at May 27, 2008, 12:08 PM CDT for 5 counties in Texas. It was in force for 52 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
- May 27, 2008, 12:08 PM CDT (17:08 UTC)
- Expired
- May 27, 2008, 1:00 PM CDT
- In force
- 52 min
- Issued by
- NWS Shreveport, LA
- Area
- Storm-based polygon
Counties Camp County, TX, Harrison County, TX, Marion County, TX, Titus County, TX, Upshur County, TX
The radar
The Shreveport radar (KSHV), 94 km from the middle of the area, began a volume at 17:11 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 nearest sounding before it
Fort Worth, TX (KFWD), launched 12:00Z, 5.1 hours before the alert went out and 240 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
- 1167 J/kg
- Mixed-layer CIN
- -136 J/kg
- Mixed-layer LCL
- 626 m above ground
- 0-6 km bulk shear
- 27 kt
- 0-1 km storm-relative helicity
- 213 m²/s²
- 0-3 km storm-relative helicity
- 194 m²/s²
- Significant tornado parameter
- 0.3
- Supercell composite
- 1.9
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 Shreveport, LA wrote its last area forecast discussion before this severe thunderstorm warning went out at May 27, 10:56 AM CDT, 1 hour 12 minutes earlier.
Area forecast discussion, May 27, 10:56 AM CDT, 1 hour 12 minutes before
AREA FORECAST DISCUSSION NATIONAL WEATHER SERVICE SHREVEPORT LA 1056 AM CDT TUE MAY 27 2008 .DISCUSSION... MCS REQUIRING FIRST PERIOD UPDATES TO MAX TEMPS...WINDS...POPS... DEWPOINTS ETC TODAY. SOUTHWARD PROGRESS OF SYSTEM MAY MAKE PRECIP LIKELY DOWN TO I 20 OF NE TX THIS AFTERNOON. ADDED POPS TO CENTRAL LA AS WELL FOR THE AFTERNOON...AND BUMPED UP SHV TO 40 PERCENT. EXPECT WINDS WHICH ARE CURRENTLY NELY OVER OUR NW PORTION OF CA...WILL VEER BACK AROUND TO SOUTHERLY BY LATE AFTERNOON. /17/ && .AVIATION... MCS CONTINUES TO DROP SOUTHWARD INTO N TX SLOWLY FORCING AN OUTFLOW BOUNDARY INTO I-30 CORRIDOR. MOST OF THE HEAVY...ACTIVE PART OF THIS FEATURE CONTINUES TO MOVE TOWARD KTYR/KGGG. ADDED COVERAGE WILL LIKELY DEVELOP ALONG THE OUTFLOW INTO KTXK AND PERHAPS EVEN KSHV AS HEATING BUILDS LATE AM/EARLY PM. EXPECT THE USUAL MVFR/IFR CONDITIONS TO ACCOMPANY HEAVY DOWNPOURS...BUT ELSEWHERE CIGS ARE LIFTING AND THINNING. SFC WINDS WILL CONTINUE S OR SW AROUND 10 KTS EVEN BEHIND THE BOUNDARY AS THE WEAK COOL FRONT REMAINS OVER KANSAS ATTM. THE FRONT IS TIGHT ON THE EASTERN SIDE OF THE UPPER RIDGE AND IS TAKING ON A BACK DOOR POSTURE...BUT WE CAN EXPECT ANOTHER NOCTURNAL MCS WHICH SHOULD HELP DROP IN A BRIEF NORTHERLY FLOW LATE TOMORROW ALONG THE I-20 CORRIDOR. /24/ && .PRELIMINARY POINT TEMPS/POPS... SHV 91 74 86 70 / 40 30 50 30 MLU 92 72 85 67 / 20 20 50 30 DEQ 85 67 84 65 / 60 60 50 20 TXK 87 70 84 69 / 60 40 50 20 ELD 90 69 84 66 / 60 40 50 20 TYR 90 73 87 69 / 40 30 50 30 GGG 91 73 87 68 / 40 30 50 30 LFK 93 73 91 68 / 20 10 50 30 && .SHV WATCHES/WARNINGS/ADVISORIES... AR...NONE. LA...NONE. OK...NONE. TX...NONE. && 17/24
Hazardous weather outlook, May 27, 12:00 PM CDT, 8 minutes before
HAZARDOUS WEATHER OUTLOOK NATIONAL WEATHER SERVICE SHREVEPORT LA 1200 PM CDT TUE MAY 27 2008 ARZ050-051-059>061-070>073-LAZ001>006-010>014-017>022-OKZ077-TXZ096- 097-108>112-124>126-136>138-149>153-165>167-281100- ANGELINA-BIENVILLE-BOSSIER-BOWIE-CADDO-CALDWELL-CAMP-CASS-CHEROKEE- CLAIBORNE-COLUMBIA-DE SOTO-FRANKLIN-GRANT-GREGG-HARRISON-HEMPSTEAD- HOWARD-JACKSON-LA SALLE-LAFAYETTE-LINCOLN-LITTLE RIVER-MARION- MCCURTAIN-MILLER-MORRIS-NACOGDOCHES-NATCHITOCHES-NEVADA-OUACHITA- PANOLA-RED RIVER LA-RED RIVER TX-RUSK-SABINE LA-SABINE TX- SAN AUGUSTINE-SEVIER-SHELBY-SMITH-TITUS-UNION AR-UNION LA-UPSHUR- WEBSTER-WINN-WOOD- 1200 PM CDT TUE MAY 27 2008 THIS HAZARDOUS WEATHER OUTLOOK IS FOR PORTIONS OF SOUTH CENTRAL ARKANSAS...SOUTHWEST ARKANSAS...NORTH CENTRAL LOUISIANA... NORTHWEST LOUISIANA...SOUTHEAST OKLAHOMA...EAST TEXAS AND NORTHEAST TEXAS. .DAY ONE...TODAY AND TONIGHT... THERE IS A SLIGHT RISK OF SEVERE THUNDERSTORMS OVER THE FOUR STATE AREA THIS AFTERNOON AND EVENING...AS A THUNDERSTORM COMPLEX WILL MOVE SOUTHEASTWARD THROUGH THE AREA. THE THUNDERSTORMS WILL HAVE THE CAPABILITY TO PRODUCE LARGE HAIL AND DAMAGING WIND GUSTS AS WELL AS LOCALLY HEAVY RAINFALL AMOUNTS THROUGH THE DAY INTO THE OVERNIGHT HOURS. .DAYS TWO THROUGH SEVEN...WEDNESDAY THROUGH MONDAY... SHOWERS AND THUNDERSTORMS WILL LIKELY BE ONGOING NORTH OF THE INTERSTATE 20 CORRIDOR OF NORTHEAST TEXAS AND NORTH CENTRAL LOUISIANA DURING THE PREDAWN HOURS WEDNESDAY MORNING. THIS ACTIVITY WILL GRADUALLY SHIFT FURTHER SOUTH AND EAST DURING THE DAY MONDAY AS A COLD FRONT TRIES TO ENTER THE REGION FROM THE NORTH. THUNDERSTORMS ON WEDNESDAY COULD POSSIBLY PRODUCE STRONG AND DAMAGING WIND GUSTS ALONG WITH LOCALLY HEAVY RAINFALL. THE THUNDERSTORM ACTIVITY SHOULD BEGIN TO DECREASE IN AREAL COVERAGE AND INTENSITY BY WEDNESDAY EVENING. .SPOTTER INFORMATION STATEMENT... STORM SPOTTER...HAM RADIO OPERATOR...AND EMERGENCY MANAGEMENT PERSONNEL ACTIVATION MAY BE NEEDED TODAY THROUGH TONIGHT. 17
In the hours before
Special weather statement, May 27, 6:46 AM CDT, 5 hours 22 minutes before
SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE SHREVEPORT LA
646 AM CDT TUE MAY 27 2008
OKZ077-271245-
MCCURTAIN-
646 AM CDT TUE MAY 27 2008
...SIGNIFICANT WEATHER ALERT...
THE NATIONAL WEATHER SERVICE IN SHREVEPORT HAS ISSUED A SPECIAL
WEATHER STATEMENT EFFECTIVE UNTIL 745 AM CDT FOR THE FOLLOWING COUNTY
IN SOUTHEAST OKLAHOMA
MCCURTAIN
INCLUDING THE FOLLOWING LOCATIONS
BATTIEST...BEACHTON...BETHEL...HOCHATOWN...MOUNT HERMAN...
PICKENS...RINGOLD...SHERWOOD...SMITHVILLE AND WATSON
AT 636 AM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR WAS TRACKING A
STRONG THUNDERSTORM 15 MILES EAST OF NASHOBA...OR 25 MILES SOUTHEAST
OF CLAYTON...MOVING SOUTHEAST AT 46 MPH.
SMALL HAIL...AND WINDS 40 TO 50 MPH ARE EXPECTED WITH THIS STORM.
LAT...LON 3411 9448 3412 9516 3416 9517 3417 9515
3425 9515 3426 9514 3426 9505 3451 9505
3451 9504 3452 9450
TIME...MOT...LOC 1146Z 316DEG 40KT 3434 9486Local storm report, May 27, 11:11 AM CDT, 57 minutes before
PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE SHREVEPORT LA
1111 AM CDT TUE MAY 27 2008
..TIME... ...EVENT... ...CITY LOCATION... ...LAT.LON...
..DATE... ....MAG.... ..COUNTY LOCATION..ST.. ...SOURCE....
..REMARKS..
1130 PM TSTM WND DMG 13 N DIERKS 34.31N 94.02W
05/26/2008 HOWARD AR EMERGENCY MNGR
A FEW LARGE LIMBS AND ONE SMALL TREE DOWN IN ATHENS.
&&
17The office that day
Everything else NWS Shreveport, LA issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| May 27, 11:54 AM CDT | Severe Thunderstorm Warning | SHV | Cass, Morris, Titus | 51 min |
| May 27, 12:29 PM CDT | Severe Thunderstorm Warning | SHV | Gregg, Rusk, Smith | 46 min |
| May 27, 12:33 PM CDT | Severe Thunderstorm Warning | SHV | Gregg, Harrison, Rusk, Smith, Upshur | 57 min |
| May 27, 12:45 PM CDT | Severe Thunderstorm Warning | SHV | Bowie, Cass, Marion | 60 min |
| May 27, 1:45 PM CDT | Severe Thunderstorm Warning | SHV | Bowie, Cass | 45 min |
| May 27, 2:09 PM CDT | Severe Thunderstorm Warning | SHV | Cass, Harrison, Marion, Panola | 66 min |
| May 27, 3:33 PM CDT | Severe Thunderstorm Warning | SHV | Angelina, Nacogdoches, San Augustine, Shelby | 57 min |
| May 27, 3:08 PM CDT | Severe Thunderstorm Warning | SHV | Claiborne, Webster | 37 min |
| May 26, 11:10 PM CDT | Special Weather Statement | SHV | Howard | 50 min |
| May 26, 11:23 PM CDT | Severe Thunderstorm Warning | SHV | Howard | 37 min |
| May 27, 2:22 PM CDT | Severe Thunderstorm Warning | SHV | Lafayette, Miller | 38 min |
Nearby
Severe Thunderstorm Warnings in Texas, 2008Every severe thunderstorm warning in 2008
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.