Alert archive / Louisiana / Severe Thunderstorm Warnings in 1997

Severe Thunderstorm Warning 121, NWS Shreveport, LA

April 22, 1997Bossier Parish, Louisiana

NWS Shreveport, LA issued this severe thunderstorm warning at Apr 22, 1997, 4:07 AM CDT for Bossier Parish, Louisiana. It was in force for 68 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: Apr 22, 1997, 4:07 AM CDT (09:07 UTC)
Expired: Apr 22, 1997, 5:15 AM CDT
In force: 68 min
Issued by: NWS Shreveport, LA
Area: Whole counties

County Bossier Parish, LA

The radar

The Shreveport radar (KSHV), 34 km from the middle of the area, began a volume at 09:11 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 watch it was issued in

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

Issued	Product	Office	Lasted
Apr 22, 1:00 AM CDT	Tornado Watch	SPC	5 hr

The nearest sounding before it

Shreveport, LA (KSHV), launched 00:00Z, 9.1 hours before the alert went out and 26 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: 310 J/kg
Mixed-layer CIN: -45 J/kg
Mixed-layer LCL: 1727 m above ground
0-6 km bulk shear: 32 kt
0-1 km storm-relative helicity: 4 m²/s²
0-3 km storm-relative helicity: 49 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.

NWS Shreveport, LA wrote its last area forecast discussion before this severe thunderstorm warning went out at Apr 22, 4:03 AM CDT, 4 minutes earlier.

Area forecast discussion, Apr 22, 4:03 AM CDT, 4 minutes before

AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE SHREVEPORT LA
330 AM CDT TUE APR 22 1997

WILL KEEP BRIEF
FRONTAL SYSTEM OVER NORTHEAST TEXAS ACROSS NORTH LOUISIANA AND INTO
MS CONTINUES TO REMAIN FOCUS FOR SHOWERS AND THUNDERSTORMS. THE FRONTAL
SYSTEM WILL REMAIN OVER THE FA DURING THE DAY AND THEN MOVE SLOWLY
SOUTH BY LATE AFTERNOON AND INTO THE EVENING. ANOTHER IN A SERIES
OF UPPER DISTURBANCES WILL SPREAD SOUTHEAST IN THE NORTHWEST FLOW
ALOFT WITH THE UPPER TROF DEEPENING AND MOVING FRONT TO NEAR
COASTAL SECTIONS DURING THE EVENING.  AFTER THE FRONT MOVES EAST
AND SOUTH OF CWA RAIN CHANCES WILL DECREASE WITH LOWER MEAN RH
VALUES. SHOWERS AND THUNDERSTORMS WILL BE SEVERE TODAY AND POSSIBLY
INTO THE EVENING OVER THE FA. WITH A SURFACE LOW IN THE GULF AND
ANOTHER OVER THE SOUTHEAST ENOUGH MOISTURE WILL WRAP AROUND TO
KEEP CLOUDS INTO THE NORTHEAST AND NORTHERN SECTIONS OF CWA
BUT DRY SLOT WILL ALLOW DECREASE IN CLOUDS ON WEDNESDAY.z

SHV 75/53/79 851  MLU 75/54/78 851                  SIX

In the hours before

Local storm report, Apr 22, 1:56 AM CDT, 2 hours 11 minutes before

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Local storm report, Apr 22, 2:09 AM CDT, 1 hour 58 minutes before

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Local storm report, Apr 22, 2:30 AM CDT, 1 hour 37 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE OFFICE SHREVEPORT LA
230 AM CDT TUE APR 22 1997

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

0208 AM    GLADEWATER                TX   2.75 INCH HAIL
04/22/97   GREGG

0210 AM    2 NW LONGVIEW             TX   1.75 INCH HAIL
04/22/97   GREGG

0210 AM    LONGVIEW                  TX   WIND DAMAGE
04/22/97   GREGG                          TREES AND POWER LINES
                                          DOWN.

SIX

Local storm report, Apr 22, 2:34 AM CDT, 1 hour 33 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE OFFICE SHREVEPORT LA
230 AM CDT TUE APR 22 1997

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

0208 AM    GLADEWATER                TX   2.75 INCH HAIL
04/22/97   GREGG

0210 AM    2 NW LONGVIEW             TX   1.75 INCH HAIL
04/22/97   GREGG

0210 AM    LONGVIEW                  TX   WIND DAMAGE
04/22/97   GREGG                          TREES AND POWER LINES
                                          DOWN.

SIX

Local storm report, Apr 22, 3:40 AM CDT, 27 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE OFFICE SHREVEPORT LA
340 AM CDT TUE APR 22 1997

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

0220 AM    SHREVEPORT                LA   .75 INCH HAIL
04/22/97   CADDO                          LINWOOD AND 70TH STREET

0230 AM    HALLSVILLE                TX   .75 INCH HAIL
04/22/97   HARRISON

0240 AM    SHREVEPORT RGNL ARPT      LA   .75 INCH HAIL
04/22/97   CADDO

0325 AM    3 W LINDEN                TX   4.5 INCH HAIL
04/22/97   CASS

0330 AM    KEITHVILLE                LA   .5 INCH HAIL
04/22/97   CADDO

0335 AM    KEITHVILLE                LA   .75 INCH HAIL
04/22/97   CADDO

ELEVEN

Local storm report, Apr 22, 3:49 AM CDT, 18 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE OFFICE SHREVEPORT LA
340 AM CDT TUE APR 22 1997

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

0220 AM    SHREVEPORT                LA   .75 INCH HAIL
04/22/97   CADDO                          LINWOOD AND 70TH STREET

0230 AM    HALLSVILLE                TX   .75 INCH HAIL
04/22/97   HARRISON

0240 AM    SHREVEPORT RGNL ARPT      LA   .75 INCH HAIL
04/22/97   CADDO

0325 AM    3 W LINDEN                TX   4.5 INCH HAIL
04/22/97   CASS

0330 AM    KEITHVILLE                LA   .5 INCH HAIL
04/22/97   CADDO

0335 AM    KEITHVILLE                LA   .75 INCH HAIL
04/2"2/97   CADDO

ELEVEN

The office that day

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

Issued	Product	Office	Counties	Lasted
Apr 21, 9:08 PM CDT	Severe Thunderstorm Warning	SHV	Bowie, Red River	67 min
Apr 21, 10:14 PM CDT	Severe Thunderstorm Warning	SHV	Bowie	61 min
Apr 21, 11:40 PM CDT	Severe Thunderstorm Warning	SHV	Marion	65 min
Apr 21, 11:59 PM CDT	Severe Thunderstorm Warning	SHV	Wood	61 min
Apr 22, 12:24 AM CDT	Tornado Warning	SHV	Wood	36 min
Apr 22, 12:31 AM CDT	Severe Thunderstorm Warning	SHV	Upshur	59 min
Apr 22, 12:56 AM CDT	Severe Thunderstorm Warning	SHV	Harrison	64 min
Apr 22, 1:00 AM CDT	Severe Thunderstorm Warning	SHV	Gregg, Smith	60 min
Apr 22, 1:58 AM CDT	Severe Thunderstorm Warning	SHV	Gregg	62 min
Apr 22, 2:12 AM CDT	Severe Thunderstorm Warning	SHV	Harrison	63 min
Apr 22, 3:05 AM CDT	Severe Thunderstorm Warning	SHV	Cass	55 min
Apr 22, 4:09 AM CDT	Severe Thunderstorm Warning	SHV	Cass	66 min
Apr 22, 5:16 AM CDT	Severe Thunderstorm Warning	SHV	Marion	44 min
Apr 22, 5:51 AM CDT	Severe Thunderstorm Warning	SHV	Wood	69 min
Apr 22, 6:03 AM CDT	Severe Thunderstorm Warning	SHV	Marion	57 min
Apr 22, 6:15 AM CDT	Severe Thunderstorm Warning	SHV	Camp, Morris, Titus, Upshur	60 min
Apr 22, 6:15 AM CDT	Severe Thunderstorm Warning	SHV	Franklin	60 min
Apr 22, 6:57 AM CDT	Severe Thunderstorm Warning	SHV	Bowie, Cass, Marion	63 min
Apr 22, 6:57 AM CDT	Severe Thunderstorm Warning	SHV	Harrison	63 min
Apr 22, 2:56 AM CDT	Severe Thunderstorm Warning	SHV	Bossier	49 min
Apr 22, 3:33 AM CDT	Severe Thunderstorm Warning	SHV	Caddo, De Soto	57 min
Apr 22, 5:31 AM CDT	Severe Thunderstorm Warning	SHV	Webster	59 min
Apr 22, 5:41 AM CDT	Severe Thunderstorm Warning	SHV	Caddo	64 min
Apr 22, 5:58 AM CDT	Severe Thunderstorm Warning	SHV	Bossier	62 min
Apr 22, 6:43 AM CDT	Flash Flood Warning	SHV	Bossier, Caddo	3 hr
Apr 22, 6:49 AM CDT	Severe Thunderstorm Warning	SHV	Bossier, Caddo	56 min
Apr 22, 7:13 AM CDT	Severe Thunderstorm Warning	SHV	Webster	62 min
Apr 22, 7:29 AM CDT	Severe Thunderstorm Warning	SHV	Claiborne	61 min
Apr 22, 7:35 AM CDT	Severe Thunderstorm Warning	SHV	Bossier, Caddo	55 min
Apr 22, 8:01 AM CDT	Tornado Warning	SHV	Claiborne, Lincoln	44 min
Apr 22, 8:12 AM CDT	Severe Thunderstorm Warning	SHV	De Soto	33 min
Apr 22, 8:15 AM CDT	Severe Thunderstorm Warning	SHV	Bienville, Webster	45 min
Apr 22, 8:15 AM CDT	Severe Thunderstorm Warning	SHV	Red River	45 min
Apr 22, 8:44 AM CDT	Tornado Warning	SHV	Lincoln	31 min
Apr 22, 8:47 AM CDT	Severe Thunderstorm Warning	SHV	Claiborne	43 min
Apr 22, 8:58 AM CDT	Severe Thunderstorm Warning	SHV	Bienville, Jackson, Lincoln	62 min
Apr 22, 8:58 AM CDT	Severe Thunderstorm Warning	SHV	Union	62 min
Apr 22, 9:00 AM CDT	Severe Thunderstorm Warning	SHV	Natchitoches, Winn	60 min
Apr 22, 9:17 AM CDT	Severe Thunderstorm Warning	SHV	Ouachita	58 min
Apr 22, 9:30 AM CDT	Severe Thunderstorm Warning	SHV	Caldwell	60 min
Apr 22, 3:24 AM CDT	Severe Thunderstorm Warning	SHV	Sevier	66 min
Apr 22, 4:34 AM CDT	Severe Thunderstorm Warning	SHV	Little River	56 min
Apr 22, 5:03 AM CDT	Severe Thunderstorm Warning	SHV	Hempstead	57 min

Nearby

Severe Thunderstorm Warnings in Louisiana, 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; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.