Alert archive / Louisiana / Flash Flood Warnings in 2017
Flash Flood Warning 39, NWS Shreveport, LA
NWS Shreveport, LA issued this flash flood warning at Aug 30, 2017, 11:36 AM CDT for De Soto Parish, Natchitoches Parish, Red River Parish, Louisiana. It was in force for 8 hr. 14 reports came from inside the area while it was in force.
The area
The outline as issued, with what was reported inside it.
The facts
- Issued
- Aug 30, 2017, 11:36 AM CDT (16:36 UTC)
- Expired
- Aug 30, 2017, 8:00 PM CDT
- In force
- 8 hr
- Issued by
- NWS Shreveport, LA
- Area
- Storm-based polygon
- Flood severity
- None
Counties De Soto Parish, LA, Natchitoches Parish, LA, Red River Parish, LA
The radar
The Ft Polk radar (KPOE), 70 km from the middle of the area, began a volume at 16:36 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 |
|---|---|---|---|
| Aug 30, 1:59 PM CDT | FLASH FLOOD | 5 S Martin, LA | BRUSHY CREEK ROAD CLOSED DUE TO HIGH WATER. |
| Aug 30, 2:00 PM CDT | FLASH FLOOD | 6 Nw Powhatan, LA | LOUISIANA DEPT OF TRANSPORTATION REPORTS ROAD CLOSURE ON LA HWY 480 AT LOCK AND DAM #4. |
| Aug 30, 2:20 PM CDT | FLASH FLOOD | Natchitoches, LA | COOP OBSERVER REPORTS ROAD CLOSURES PER POLICE DEPT EAST 5TH ST @ BIENVILLE; EAST 5TH @ ROYAL; WATSON DRIVE @ SOUTH DR, LEDET @ KATELYN WILLIAMS AVE FROM BYRD AVE TO SALTER ST, STEVENS @ E 3RD; TEXAS @ UNDERPASS EAGLE, FAIRGROUNDS RD @ REBA, ST BREDA AV, ROWEN |
| Aug 30, 2:23 PM CDT | FLASH FLOOD | 2 Nw Natchitoches, LA | CHINQUAPIN DRIVE OFF OF LA HWY 3191 IMPASSABLE DUE TO HIGH WATER. |
| Aug 30, 3:28 PM CDT | FLASH FLOOD | Natchitoches, LA | KSLA STORY REPORTS ROADS CLOSED IN NATCHITOCHES PARISH, NELSON RD NEAR MARTHAVILLE, EIGHT MILE LOOP IN OAK GROVE, STILES RD OFF OF COLLIER HILL RD NORTH OF CAMPTI, LONGLOIS HILL RD NEAR FLORA, JIM BELL RD NORTH OF CAMPTI, ROCKS CREEK RD NEAR MARTHAVILLE, CENTR |
| Aug 30, 4:00 PM CDT | FLASH FLOOD | 5 Wsw Powhatan, LA | HIGHWAY 485 ABOUT 0.5 MILES WEST OF I-49, AS WELL AS 2 MILES NORTH OF THE HIGHWAY 6 INTERSECTION, WAS CLOSED DUE TO FLOODING. |
| Aug 30, 4:30 PM CDT | FLASH FLOOD | 3 Nnw Campti, LA | COLLIER HILL ROAD WAS FLOODED AND CLOSED. |
| Aug 30, 4:30 PM CDT | FLASH FLOOD | 4 Nne Robeline, LA | HIGHWAY 1222 AND POSEY ROAD WAS FLOODED AND CLOSED. |
| Aug 30, 4:39 PM CDT | FLASH FLOOD | 3 S South Mansfield, LA | HUDSON DARBY ROAD WASHED OUT, DRAINAGE DITCH COLLAPSED PER DPSO. |
| Aug 30, 6:00 PM CDT | FLASH FLOOD | 1 Sse Campti, LA | HIGHWAY 71 IN CAMPTI WAS FLOODED AND CLOSED. |
| Aug 30, 7:09 PM CDT | FLASH FLOOD | 7 Nne Campti, LA | HIGHWAY 153 ABOUT 1 MILE NORTH OF HIGHWAY 9 NEAR THE CRESTON COMMUNITY WAS CLOSED DUE TO FLOODING. |
| Aug 30, 7:10 PM CDT | FLASH FLOOD | 3 Sw Ashland, LA | LA HWY 155 AT RED NELSON IMPASSABLE DUE TO HIGH WATER. NATCHITOCHES SO FACEBOOK POST. |
| Aug 30, 8:00 PM CDT | FLASH FLOOD | 3 S Ashland, LA | HIGHWAY 153 NEAR RED NELSON ROAD JUST SOUTH OF ASHLAND WAS CLOSED DUE TO FLOODING. |
| Aug 30, 8:00 PM CDT | FLASH FLOOD | 9 Sw Coushatta, LA | LOUISIANA DEPT OF TRANSPORTATION REPORTS ROAD CLOSURE ON LA HWY 177 AT CHEMARD LAKE BRIDGE 2 MILES SOUTH OF I-49. |
Local storm reports filed while the alert was in force, from inside its polygon or its counties.
The nearest sounding before it
Shreveport, LA (KBAD), launched 12:00Z, 4.6 hours before the alert went out and 96 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
- 76 J/kg
- Mixed-layer CIN
- -58 J/kg
- Mixed-layer LCL
- 448 m above ground
- 0-6 km bulk shear
- 28 kt
- 0-1 km storm-relative helicity
- 182 m²/s²
- 0-3 km storm-relative helicity
- 198 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted.
108
WGUS54 KSHV 301636
FFWSHV
LAC031-069-081-301900-
/O.NEW.KSHV.FF.W.0039.170830T1636Z-170830T1900Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
BULLETIN - EAS ACTIVATION REQUESTED
Flash Flood Warning
National Weather Service Shreveport LA
1136 AM CDT WED AUG 30 2017
The National Weather Service in Shreveport has issued a
* Flash Flood Warning for...
Southern De Soto Parish in northwestern Louisiana...
Red River Parish in northwestern Louisiana...
Natchitoches Parish in northwestern Louisiana...
* Until 200 PM CDT
* At 1135 AM CDT, Doppler radar indicated heavy rain across the
warned area. Flash flooding is expected to begin shortly.
* Some locations that will experience flooding include...
Natchitoches, Mansfield, Coushatta, Logansport, Campti, Allen,
Provencal, Natchez, Martin, Clarence, Goldonna, South Mansfield,
Ashland, Edgefield, Robeline, Powhatan, Stanley, Carmel, Lake End
and Kisatchie.
Additional rainfall amounts of two to three inches are possible in
the warned area.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
A Flash Flood Warning means that flooding is imminent or occurring.
If you are in the warned area move to higher ground immediately.
Residents living along streams and creeks should take immediate
precautions to protect life and property.
&&
LAT...LON 3136 9324 3154 9324 3154 9334 3171 9334
3172 9344 3184 9344 3185 9388 3190 9390
3201 9404 3217 9319 3215 9319 3215 9294
3194 9287 3186 9290 3185 9295 3168 9297
3162 9290 3160 9280 3152 9272 3135 9295
$$
051 follow-up statement
910
WGUS54 KSHV 301845
FFWSHV
LAC031-069-081-310100-
/O.EXT.KSHV.FF.W.0039.000000T0000Z-170831T0100Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
BULLETIN - EAS ACTIVATION REQUESTED
Flash Flood Warning
National Weather Service Shreveport LA
145 PM CDT WED AUG 30 2017
The National Weather Service in Shreveport has extended the
* Flash Flood Warning for...
Southern De Soto Parish in northwestern Louisiana...
Red River Parish in northwestern Louisiana...
Natchitoches Parish in northwestern Louisiana...
* Until 800 PM CDT Wednesday
* At 144 PM CDT, Doppler radar indicated heavy rain across the warned
area. Flash flooding will begin shortly.
* Some locations that will experience flooding include...
Natchitoches, Mansfield, Coushatta, Logansport, Campti, Allen,
Provencal, Natchez, Martin, Clarence, Goldonna, South Mansfield,
Ashland, Edgefield, Robeline, Powhatan, Stanley, Carmel, Lake End
and Kisatchie.
Additional rainfall amounts of two to three inches are possible in
the warned area.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
A Flash Flood Warning means that flooding is imminent or occurring.
If you are in the warned area move to higher ground immediately.
Residents living along streams and creeks should take immediate
precautions to protect life and property.
&&
LAT...LON 3136 9324 3154 9324 3154 9334 3171 9334
3172 9344 3184 9344 3185 9388 3190 9390
3201 9404 3217 9319 3215 9319 3215 9294
3194 9287 3186 9290 3185 9295 3168 9297
3162 9290 3160 9280 3152 9272 3135 9295
$$
05The office that day
Everything else NWS Shreveport, LA issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Aug 29, 10:06 PM CDT | Lake Wind Advisory | SHV | Bienville, Bossier, Caddo, Caldwell, Claiborne, De Soto and 11 more | 27 hr |
| Aug 30, 6:22 AM CDT | Areal Flood Advisory | SHV | Bossier, Caddo | 3 hr |
| Aug 30, 6:52 AM CDT | Areal Flood Advisory | SHV | De Soto, Natchitoches, Red River, Sabine | 3 hr |
| Aug 30, 10:09 AM CDT | River Flood Warning | SHV | Caldwell, Grant, LaSalle, Winn | 8 days |
| Aug 30, 10:34 AM CDT | Flash Flood Warning | SHV | Sabine | 9 hr |
| Aug 30, 2:25 PM CDT | Flash Flood Warning | SHV | Bienville, Caldwell, Grant, Jackson, LaSalle, Winn | 6 hr |
Nearby
Flash Flood Warnings in Louisiana, 2017Every flash flood warning in 2017
Sources
The product and its follow-ups from the Iowa Environmental Mesonet's archive of National Weather Service and Storm Prediction Center text; local storm reports from the same archive; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.