Alert archive / Louisiana / Flash Flood Warnings in 2015
Flash Flood Warning 49, NWS Shreveport, LA
NWS Shreveport, LA issued this flash flood warning at May 25, 2015, 8:14 PM CDT for Bossier Parish, Caddo Parish, De Soto Parish, Louisiana. It was in force for 4 hr. No storm report in the archive falls inside the area while it was in force.
The area
The outline as issued.
The facts
- Issued
- May 25, 2015, 8:14 PM CDT (01:14 UTC)
- Expired
- May 26, 2015, 12:15 AM CDT
- In force
- 4 hr
- Issued by
- NWS Shreveport, LA
- Area
- Storm-based polygon
- Flood severity
- None
Counties Bossier Parish, LA, Caddo Parish, LA, De Soto Parish, LA
The radar
The Shreveport radar (KSHV), 31 km from the middle of the area, began a volume at 01:13 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
Shreveport, LA (KBAD), launched 00:00Z, 1.2 hours before the alert went out and 28 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
- 2131 J/kg
- Mixed-layer CIN
- -12 J/kg
- Mixed-layer LCL
- 1156 m above ground
- 0-6 km bulk shear
- 45 kt
- 0-1 km storm-relative helicity
- 118 m²/s²
- 0-3 km storm-relative helicity
- 191 m²/s²
- Significant tornado parameter
- 1.6
- Supercell composite
- 16.9
The text
As transmitted, in the capitals the NWS used until 2016.
644
WGUS54 KSHV 260114
FFWSHV
LAC015-017-031-260515-
/O.NEW.KSHV.FF.W.0049.150526T0114Z-150526T0515Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
BULLETIN - EAS ACTIVATION REQUESTED
FLASH FLOOD WARNING
NATIONAL WEATHER SERVICE SHREVEPORT LA
814 PM CDT MON MAY 25 2015
THE NATIONAL WEATHER SERVICE IN SHREVEPORT HAS ISSUED A
* FLASH FLOOD WARNING FOR...
BOSSIER PARISH IN NORTHWESTERN LOUISIANA...
CADDO PARISH IN NORTHWESTERN LOUISIANA...
DE SOTO PARISH IN NORTHWESTERN LOUISIANA...
* UNTIL 1215 AM CDT
* AT 812 PM CDT...DOPPLER RADAR INDICATED A LINE OF SEVERE
THUNDERSTORMS FROM NEAR PLAIN DEALING TO NEAR SHREVEPORT ONTO NEAR
LOGANSPORT LOUISIANA. EXCESSIVE HEAVY RAINFALL IS OCCURRING WITH
THIS LINE. EXPECT RAINFALL AMOUNTS OF ONE TO THREE INCHES THIS
EVENING WHICH WILL PRODUCE FLASH FLOODING.
* SOME LOCATIONS THAT WILL EXPERIENCE FLOODING INCLUDE...
SHREVEPORT...BOSSIER CITY...MANSFIELD...VIVIAN...HAUGHTON...
GREENWOOD...BLANCHARD...BENTON...STONEWALL...LOGANSPORT...PLAIN
DEALING...OIL CITY...MOORINGSPORT...HOSSTON...RODESSA...BELCHER...
IDA...GILLIAM...FOSTERS AND EASTWOOD.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
MOVE TO HIGHER GROUND NOW. ACT QUICKLY TO PROTECT YOUR LIFE.
BE ESPECIALLY CAUTIOUS AT NIGHT WHEN IT IS HARDER TO RECOGNIZE THE
DANGERS OF FLOODING.
&&
LAT...LON 3190 9390 3199 9404 3302 9404 3301 9351
3297 9353 3287 9345 3241 9344 3241 9337
3239 9343 3237 9340 3224 9342 3224 9361
3218 9353 3213 9351 3211 9354 3203 9348
3194 9335 3193 9343 3184 9344 3185 9388
$$
131 follow-up statement
132
WGUS74 KSHV 260344
FFSSHV
FLASH FLOOD STATEMENT
NATIONAL WEATHER SERVICE SHREVEPORT LA
1044 PM CDT MON MAY 25 2015
LAC015-017-031-260515-
/O.CON.KSHV.FF.W.0049.000000T0000Z-150526T0515Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
BOSSIER LA-CADDO LA-DE SOTO LA-
1044 PM CDT MON MAY 25 2015
...THE FLASH FLOOD WARNING REMAINS IN EFFECT UNTIL 1215 AM CDT FOR
BOSSIER...CADDO AND DE SOTO PARISHES...
AT 1041 PM CDT...DOPPLER RADAR CONTINUED TO INDICATE WIDESPREAD
LIGHT TO MODERATE RAIN ASSOCIATED WITH THUNDERSTORMS ACTIVITY ACROSS
THE WARNED AREA. WHILE ADDITIONAL RAINFALL AMOUNTS SHOULD NOT BE
EXCESSIVE FOR THE NEXT HOUR OR SO...RUNOFF FROM PREVIOUS RAINFALL IS
NOT COMPLETE AND SOME ROAD SURFACES COULD STILL BE EXPERIENCING SOME
FLOODING PROBLEMS.
SOME LOCATIONS THAT WILL EXPERIENCE FLOODING INCLUDE...
SHREVEPORT...BOSSIER CITY...MANSFIELD...VIVIAN...HAUGHTON...
GREENWOOD...BLANCHARD...BENTON...STONEWALL...LOGANSPORT...PLAIN
DEALING...OIL CITY...MOORINGSPORT...HOSSTON...RODESSA...BELCHER...
IDA...GILLIAM...FOSTERS AND EASTWOOD.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
BE ESPECIALLY CAUTIOUS AT NIGHT WHEN IT IS HARDER TO RECOGNIZE THE
DANGERS OF FLOODING.
&&
LAT...LON 3190 9390 3199 9404 3302 9404 3301 9351
3297 9353 3287 9345 3241 9344 3241 9337
3239 9343 3237 9340 3224 9342 3224 9361
3218 9353 3213 9351 3211 9354 3203 9348
3194 9335 3193 9343 3184 9344 3185 9388
$$
13The office that day
Everything else NWS Shreveport, LA issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| May 25, 7:04 PM CDT | Severe Thunderstorm Warning | SHV | Bienville, Natchitoches, Winn | 56 min |
| May 25, 7:07 PM CDT | Tornado Warning | SHV | Bienville, Jackson, Natchitoches, Winn | 38 min |
| May 25, 7:27 PM CDT | Severe Thunderstorm Warning | SHV | Bossier, Caddo, De Soto, Sabine | 63 min |
| May 25, 7:36 PM CDT | Tornado Warning | SHV | Caddo, De Soto | 39 min |
| May 25, 8:08 PM CDT | Special Weather Statement | SHV | Lincoln | 52 min |
| May 25, 8:10 PM CDT | Tornado Warning | SHV | Bossier, Caddo, De Soto | 44 min |
| May 25, 8:26 PM CDT | Severe Thunderstorm Warning | SHV | Bienville, Bossier, Caddo, Claiborne, De Soto, Natchitoches and 2 more | 64 min |
| May 25, 8:33 PM CDT | Tornado Warning | SHV | Bienville, Bossier, Caddo, Webster | 42 min |
| May 25, 9:05 PM CDT | Tornado Warning | SHV | Natchitoches, Red River, Winn | 40 min |
| May 25, 9:22 PM CDT | Severe Thunderstorm Warning | SHV | Bienville, Caldwell, Claiborne, Jackson, Lincoln, Natchitoches and 4 more | 53 min |
| May 25, 10:05 PM CDT | Severe Thunderstorm Warning | SHV | Caldwell, Jackson, Lincoln, Ouachita, Union, Winn | 40 min |
| May 25, 10:44 PM CDT | Severe Thunderstorm Warning | SHV | Caldwell, Jackson, LaSalle, Ouachita, Union, Winn | 31 min |
| May 26, 6:13 PM CDT | Severe Thunderstorm Warning | SHV | Natchitoches, Sabine | 47 min |
Nearby
Flash Flood Warnings in Louisiana, 2015Every flash flood warning in 2015
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.