Alert archive / Texas / Severe Thunderstorm Warnings in 1997

Severe Thunderstorm Warning 220, NWS Shreveport, LA

May 27, 1997Angelina County, Texas

NWS Shreveport, LA issued this severe thunderstorm warning at May 27, 1997, 10:31 PM CDT for Angelina County, Texas. It was in force for 59 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: May 27, 1997, 10:31 PM CDT (03:31 UTC)
Expired: May 27, 1997, 11:30 PM CDT
In force: 59 min
Issued by: NWS Shreveport, LA
Area: Whole counties

County Angelina County, TX

The radar

The Shreveport radar (KSHV), 152 km from the middle of the area, began a volume at 03:35 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.

What was reported inside it

Time	Report	Where	Remark
May 27, 11:05 PM CDT	Hail 0.75	Lufkin, TX
May 27, 11:25 PM CDT	Hail 2.75	Lufkin, TX

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.

The watch it was issued in

The SPC watch in force over the same counties when this warning went out.

Issued	Product	Office	Lasted
May 27, 7:00 PM CDT	Tornado Watch	SPC	6 hr

The nearest sounding before it

Lake Charles Mun, LA (KLCH), launched 00:00Z, 3.5 hours before the alert went out and 185 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: 3458 J/kg
Mixed-layer CIN: -21 J/kg
Mixed-layer LCL: 843 m above ground
0-6 km bulk shear: 23 kt
0-1 km storm-relative helicity: 19 m²/s²
0-3 km storm-relative helicity: 26 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 1.1

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.

NWS Shreveport, LA wrote its last area forecast discussion before this severe thunderstorm warning went out at May 27, 8:26 PM CDT, 2 hours 5 minutes earlier.

Area forecast discussion, May 27, 8:26 PM CDT, 2 hours 5 minutes before

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In the hours before

Local storm report, May 27, 6:24 PM CDT, 4 hours 7 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE SHREVEPORT LA
614 PM CDT TUE MAY 27 1997

TIME(CDT)  .....CITY LOCATION..... STATE  ...EVENT/REMARKS...
           ....COUNTY LOCATION....

0310 PM    JEFFERSON                 TX   2.75 INCH HAIL
05/27/97   MARION                         REPORT RELAYED BY KSLA
                                          TV-12

0315 PM    JEFFERSON                 TX   1.75 INCH HAIL
05/27/97   MARION                         REPORT RELAYED BY KSLA
                                          TV-12

0520 PM    2 W REDWATER              TX   1 INCH HAIL
05/27/97   BOWIE

0527 PM    MAUD                      TX   1 INCH HAIL
05/27/97   BOWIE

0532 PM    10 NE MAUD                TX   1 INCH HAIL
05/27/97   BOWIE                          QUARTER SIZED HAIL
                                          REPORTED NEAR WAKE
                                          VILLAGE.

0540 PM    KEITHVILLE                LA   .5 INCH HAIL
05/27/97   CADDO

0542 PM    MAUD                      TX   1.75 INCH HAIL
05/27/97   BOWIE

0553 PM    STONEWALL                 LA   .75 INCH HAIL
05/27/97   DE SOTO

0556 PM    STONEWALL                ` LA   .5 INCH HAIL
05/27/97   DE SOTO

0607 PM    FRIERSON                  LA   .75 INCH HAIL
05/27/97   DE SOTO

10

Local storm report, May 27, 9:01 PM CDT, 1 hour 30 minutes before

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Local storm report, May 27, 9:03 PM CDT, 1 hour 28 minutes before

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Local storm report, May 27, 9:25 PM CDT, 1 hour 6 minutes before

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Local storm report, May 27, 9:27 PM CDT, 1 hour 4 minutes before

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Special weather statement, May 27, 9:55 PM CDT, 36 minutes before

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The office that day

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

Issued	Product	Office	Counties	Lasted
May 27, 7:09 PM CDT	Flash Flood Warning	SHV	Harrison, Panola	4 hr
May 27, 7:37 PM CDT	Severe Thunderstorm Warning	SHV	Panola	38 min
May 27, 8:44 PM CDT	Severe Thunderstorm Warning	SHV	Panola	61 min
May 27, 10:44 PM CDT	Tornado Warning	SHV	Angelina	46 min
May 27, 11:33 PM CDT	Tornado Warning	SHV	Angelina	27 min
May 27, 7:01 PM CDT	Severe Thunderstorm Warning	SHV	Sabine	59 min
May 27, 7:14 PM CDT	Severe Thunderstorm Warning	SHV	Jackson, Lincoln	61 min
May 27, 7:50 PM CDT	Severe Thunderstorm Warning	SHV	Caldwell, Ouachita	55 min
May 27, 8:09 PM CDT	Severe Thunderstorm Warning	SHV	Natchitoches	51 min
May 27, 8:12 PM CDT	Tornado Warning	SHV	Ouachita	48 min
May 27, 8:14 PM CDT	Severe Thunderstorm Warning	SHV	De Soto	61 min

Nearby

Severe Thunderstorm Warnings in Texas, 1997 Every severe thunderstorm warning 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; verification from NCEI's Storm Data; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.