Alert archive / Texas / Flash Flood Warnings in 2021
Flash Flood Warning 4, NWS Shreveport, LA
NWS Shreveport, LA issued this flash flood warning at May 9, 2021, 4:50 PM CDT for 5 counties in Texas. It was in force for 12 hr. 10 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
- May 9, 2021, 4:50 PM CDT (21:50 UTC)
- Expired
- May 10, 2021, 5:00 AM CDT
- In force
- 12 hr
- Issued by
- NWS Shreveport, LA
- Area
- Storm-based polygon
- Flood severity
- None
Counties Angelina County, TX, Cherokee County, TX, Nacogdoches County, TX, San Augustine County, TX, Shelby County, TX
The radar
The Shreveport radar (KSHV), 151 km from the middle of the area, began a volume at 21:53 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 9, 8:00 PM CDT | FLASH FLOOD | 5 W Wells, TX | FM 1247 BETWEEN FM 1911 AND FM 2752 WAS CLOSED DUE TO FLOODING. |
| May 9, 8:15 PM CDT | FLASH FLOOD | 7 Nne Wells, TX | NACOGDOCHES COUNTY EMERGENCY MANAGEMENT OFFICE REPORTS THAT COUNTY ROAD 789 IS CLOSED DUE TO FLOODING. |
| May 9, 8:30 PM CDT | FLASH FLOOD | 7 Sw Nacogdoches, TX | NACOGDOCHES COUNTY EMERGENCY MANAGEMENT OFFICE REPORTS SEVERAL ROAD CLOSURES IN THE SOUTHWESTERN PORTION OF COUNTY DUE TO FLASH FLOODING, INCLUDING...STATE HIGHWAY 7 NEAR MORRAL BAYOU, COUNTY ROAD 620, COUNTY ROAD 724, AND COUNTY ROAD 765. |
| May 9, 8:35 PM CDT | FLASH FLOOD | 5 S Nacogdoches, TX | NACOGDOCHES COUNTY EMERGENCY MANAGEMENT OFFICE REPORT A COUPLE OF ROADS JUST SOUTH OF THE CITY OF NACOGDOCHES ARE CLOSED DUE TO FLASH FLOODING, INCLUDING...COUNTY ROAD 525 NEAR THE BRIDGE AND COUNTY ROAD 526. |
| May 9, 8:45 PM CDT | FLASH FLOOD | 10 Se Nacogdoches, TX | NACOGDOCHES COUNTY EMERGENCY MANAGEMENT OFFICE REPORT COUNTY ROAD 411 AND FARM TO MARKET ROAD 226 IN THE WODEN AREA ARE CLOSED DUE TO FLASH FLOODING. |
| May 9, 8:45 PM CDT | FLASH FLOOD | 12 W Chireno, TX | NACOGDOCHES COUNTY EMERGENCY MANAGEMENT OFFICE REPORT COUNTY ROAD 555 BETWEEN WODEN AND ETOILE IS CLOSED DUE TO FLASH FLOODING. |
| May 9, 8:45 PM CDT | FLASH FLOOD | 4 E Nacogdoches, TX | NACOGDOCHES COUNTY EMERGENCY MANAGEMENT OFFICE REPORTS SEVERAL ROAD CLOSURES DUE TO FLOODING IN JUST EAST OF THE CITY OF NACOGDOCHES, INCLUDING...COUNTY ROADS 228, 229, 230, AND 302. |
| May 9, 8:45 PM CDT | FLASH FLOOD | 8 E Nacogdoches, TX | NACOGDOCHES COUNTY EMERGENCY MANAGEMENT OFFICE REPORT COUNTY ROAD 317 IN THE EASTERN PORTION OF THE COUNTY IS CLOSED DUE TO FLASH FLOODING. |
| May 9, 9:00 PM CDT | FLASH FLOOD | 6 S Chireno, TX | FM 95 WAS FLOODED JUST SOUTH OF CR 486. |
| May 9, 9:00 PM CDT | FLASH FLOOD | 7 N Broaddus, TX | FM 1277 BETWEEN CR 344 AND CR 3250 WAS FLOODED. |
Local storm reports filed while the alert was in force, from inside its polygon or its counties.
The nearest sounding before it
Shreveport, LA (KSHV), launched 12:00Z, 9.8 hours before the alert went out and 160 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
- 853 J/kg
- Mixed-layer CIN
- -220 J/kg
- Mixed-layer LCL
- 639 m above ground
- 0-6 km bulk shear
- 34 kt
- 0-1 km storm-relative helicity
- 288 m²/s²
- 0-3 km storm-relative helicity
- 490 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 1.0
The text
As transmitted.
907
WGUS54 KSHV 092150
FFWSHV
TXC005-073-347-405-419-100100-
/O.NEW.KSHV.FF.W.0004.210509T2150Z-210510T0100Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
BULLETIN - EAS ACTIVATION REQUESTED
Flash Flood Warning
National Weather Service Shreveport LA
450 PM CDT Sun May 9 2021
The National Weather Service in Shreveport has issued a
* Flash Flood Warning for...
Northwestern Angelina County in eastern Texas...
Nacogdoches County in eastern Texas...
Northwestern San Augustine County in eastern Texas...
Southwestern Shelby County in eastern Texas...
Southern Cherokee County in northeastern Texas...
* Until 800 PM CDT.
* At 450 PM CDT, Doppler radar indicated thunderstorms producing
heavy rain across the warned area. Between 1 and 3 inches of rain
have fallen. Flash flooding is ongoing or expected to begin
shortly.
HAZARD...Flash flooding caused by thunderstorms.
SOURCE...Doppler radar.
IMPACT...Flooding of small creeks and streams, urban areas,
highways, streets and underpasses as well as other
drainage and low lying areas.
* Some locations that will experience flash flooding include...
Nacogdoches, Rusk, Alto, Wells, Douglass, Pollok, Forest, Woden,
Melrose, Morrill, Martinsville, Appleby, Chireno, Central,
Looneyville, Lilbert, Linwood and Denning.
Additional rainfall amounts of 2 to 4 inches are possible in the
warned area through 8 pm.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
Turn around, don't drown when encountering flooded roads. Most flood
deaths occur in vehicles.
Please report flooding to your local law enforcement agency when you
can do so safely.
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 3178 9540 3178 9495 3162 9417 3140 9429
3144 9472 3137 9496 3138 9495 3142 9501
3144 9501 3147 9510 3152 9510 3159 9517
3158 9526 3163 9529 3168 9528 3172 9534
3173 9533 3173 9537 3175 9536 3176 9540
FLASH FLOOD...RADAR INDICATED
$$
155 follow-up statements
539
WGUS54 KSHV 100043
FFWSHV
TXC005-073-347-405-419-100500-
/O.EXT.KSHV.FF.W.0004.000000T0000Z-210510T0500Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
BULLETIN - EAS ACTIVATION REQUESTED
Flash Flood Warning
National Weather Service Shreveport LA
743 PM CDT Sun May 9 2021
The National Weather Service in Shreveport has extended the
* Flash Flood Warning for...
Northwestern Angelina County in eastern Texas...
Nacogdoches County in eastern Texas...
Northwestern San Augustine County in eastern Texas...
Southwestern Shelby County in eastern Texas...
Southern Cherokee County in northeastern Texas...
* Until midnight CDT.
* At 743 PM CDT, Doppler radar and automated rain gauges indicated
thunderstorms producing heavy rain across the warned area. Between
2 and 4 inches of rain have fallen over already saturated grounds.
Additional thunderstorms, some of which contains locally heavy
rainfall, continues to develop over Deep East Texas and will
aggravate the ongoing flooding. Flash flooding is ongoing.
HAZARD...Flash flooding caused by thunderstorms.
SOURCE...Doppler radar and automated gauges.
IMPACT...Flooding of small creeks and streams, urban areas,
highways, streets and underpasses as well as other
drainage and low lying areas.
* Some locations that will experience flash flooding include...
Nacogdoches, Rusk, Alto, Wells, Douglass, Pollok, Forest, Woden,
Melrose, Morrill, Martinsville, Appleby, Chireno, Central,
Looneyville, Lilbert, Linwood and Denning.
Additional rainfall amounts of 1 to 3 inches are possible in the
warned area through late evening.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
Turn around, don't drown when encountering flooded roads. Most flood
deaths occur in vehicles.
Be especially cautious at night when it is harder to recognize the
dangers of flooding.
Please report flooding to your local law enforcement agency when you
can do so safely.
&&
LAT...LON 3178 9540 3178 9495 3162 9417 3140 9429
3144 9472 3137 9496 3138 9495 3142 9501
3144 9501 3147 9510 3152 9510 3159 9517
3158 9526 3163 9529 3168 9528 3172 9534
3173 9533 3173 9537 3175 9536 3176 9540
FLASH FLOOD...RADAR AND GAUGE INDICATED
EXPECTED RAINFALL...1-3 INCHES IN 4 HOURS
$$
15137
WGUS74 KSHV 100228
FFSSHV
Flash Flood Statement
National Weather Service Shreveport LA
928 PM CDT Sun May 9 2021
TXC005-073-347-405-419-100500-
/O.CON.KSHV.FF.W.0004.000000T0000Z-210510T0500Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
Angelina TX-Cherokee TX-Nacogdoches TX-San Augustine TX-Shelby TX-
928 PM CDT Sun May 9 2021
...FLASH FLOOD WARNING REMAINS IN EFFECT UNTIL MIDNIGHT CDT TONIGHT
FOR NORTHWESTERN ANGELINA, NACOGDOCHES, NORTHWESTERN SAN AUGUSTINE,
SOUTHWESTERN SHELBY AND SOUTHERN CHEROKEE COUNTIES...
At 928 PM CDT, Doppler radar and automated rain gauges indicated
thunderstorms producing heavy rain across the warned area. Between 2
and 5 inches of rain have fallen. Flash flooding is ongoing across
much of the warned area at this time.
HAZARD...Flash flooding caused by thunderstorms.
SOURCE...Doppler radar and automated gauges.
IMPACT...Flooding of small creeks and streams, urban areas,
highways, streets and underpasses as well as other
drainage and low lying areas.
Some locations that will experience flash flooding include...
Nacogdoches, Rusk, Alto, Wells, Douglass, Pollok, Forest, Woden,
Melrose, Morrill, Martinsville, Appleby, Chireno, Central,
Looneyville, Lilbert, Linwood and Denning.
Additional rainfall amounts of 1 to 2 inches are possible in the
warned area.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
Turn around, don't drown when encountering flooded roads. Most flood
deaths occur in vehicles.
Be especially cautious at night when it is harder to recognize the
dangers of flooding.
Please report flooding to your local law enforcement agency when you
can do so safely.
&&
LAT...LON 3178 9540 3178 9495 3162 9417 3140 9429
3144 9472 3137 9496 3138 9495 3142 9501
3144 9501 3147 9510 3152 9510 3159 9517
3158 9526 3163 9529 3168 9528 3172 9534
3173 9533 3173 9537 3175 9536 3176 9540
FLASH FLOOD...RADAR AND GAUGE INDICATED
$$
13999
WGUS54 KSHV 100416
FFWSHV
TXC005-073-347-405-419-100700-
/O.EXT.KSHV.FF.W.0004.000000T0000Z-210510T0700Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
BULLETIN - EAS ACTIVATION REQUESTED
Flash Flood Warning
National Weather Service Shreveport LA
1116 PM CDT Sun May 9 2021
The National Weather Service in Shreveport has extended the
* Flash Flood Warning for...
Northwestern Angelina County in eastern Texas...
Nacogdoches County in eastern Texas...
Northwestern San Augustine County in eastern Texas...
Southwestern Shelby County in eastern Texas...
Southern Cherokee County in northeastern Texas...
* Until 200 AM CDT.
* At 1116 PM CDT, local law enforcement reported thunderstorms
producing heavy rain across the warned area. Between 2 and 5
inches of rain have fallen. Flash flooding is already occurring.
HAZARD...Flash flooding caused by thunderstorms.
SOURCE...Law enforcement.
IMPACT...Flooding of small creeks and streams, urban areas,
highways, streets and underpasses as well as other
drainage and low lying areas.
* Some locations that will experience flash flooding include...
Nacogdoches, Rusk, Alto, Wells, Douglass, Pollok, Forest, Woden,
Melrose, Morrill, Martinsville, Appleby, Chireno, Central,
Looneyville, Lilbert, Linwood and Denning.
Additional rainfall amounts of 1 to 2 inches are possible in the
warned area.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
Turn around, don't drown when encountering flooded roads. Most flood
deaths occur in vehicles.
Be especially cautious at night when it is harder to recognize the
dangers of flooding.
Please report flooding to your local law enforcement agency when you
can do so safely.
&&
LAT...LON 3178 9540 3178 9495 3162 9417 3140 9429
3144 9472 3137 9496 3138 9495 3142 9501
3144 9501 3147 9510 3152 9510 3159 9517
3158 9526 3163 9529 3168 9528 3172 9534
3173 9533 3173 9537 3175 9536 3176 9540
FLASH FLOOD...OBSERVED
$$
44199
WGUS54 KSHV 100626
FFWSHV
TXC005-073-347-405-419-100900-
/O.EXT.KSHV.FF.W.0004.000000T0000Z-210510T0900Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
BULLETIN - EAS ACTIVATION REQUESTED
Flash Flood Warning
National Weather Service Shreveport LA
126 AM CDT Mon May 10 2021
The National Weather Service in Shreveport has extended the
* Flash Flood Warning for...
Northwestern Angelina County in eastern Texas...
Nacogdoches County in eastern Texas...
Northwestern San Augustine County in eastern Texas...
Southwestern Shelby County in eastern Texas...
Southern Cherokee County in northeastern Texas...
* Until 400 AM CDT.
* At 126 AM CDT, local law enforcement reported thunderstorms
producing heavy rain across the warned area. Between 2 and 5
inches of rain have fallen. Flash flooding is already occurring.
HAZARD...Flash flooding caused by thunderstorms.
SOURCE...Law enforcement.
IMPACT...Flooding of small creeks and streams, urban areas,
highways, streets and underpasses as well as other
drainage and low lying areas.
* Some locations that will experience flash flooding include...
Nacogdoches, Rusk, Alto, Wells, Douglass, Pollok, Forest, Woden,
Melrose, Morrill, Martinsville, Appleby, Chireno, Central,
Looneyville, Lilbert, Linwood and Denning.
Additional rainfall amounts of 1 to 2 inches are possible in the
warned area.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
Turn around, don't drown when encountering flooded roads. Most flood
deaths occur in vehicles.
Be especially cautious at night when it is harder to recognize the
dangers of flooding.
Please report flooding to your local law enforcement agency when you
can do so safely.
&&
LAT...LON 3178 9540 3178 9495 3162 9417 3140 9429
3144 9472 3137 9496 3138 9495 3142 9501
3144 9501 3147 9510 3152 9510 3159 9517
3158 9526 3163 9529 3168 9528 3172 9534
3173 9533 3173 9537 3175 9536 3176 9540
FLASH FLOOD...OBSERVED
$$
44641
WGUS54 KSHV 100847
FFWSHV
TXC005-073-347-405-419-101000-
/O.EXT.KSHV.FF.W.0004.000000T0000Z-210510T1000Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
BULLETIN - EAS ACTIVATION REQUESTED
Flash Flood Warning
National Weather Service Shreveport LA
347 AM CDT Mon May 10 2021
The National Weather Service in Shreveport has extended the
* Flash Flood Warning for...
Northwestern Angelina County in eastern Texas...
Nacogdoches County in eastern Texas...
Northwestern San Augustine County in eastern Texas...
Southwestern Shelby County in eastern Texas...
Southern Cherokee County in northeastern Texas...
* Until 500 AM CDT.
* At 347 AM CDT, local law enforcement reported thunderstorms
producing heavy rain across the warned area. Between 2 and 5
inches of rain have fallen. Flash flooding is already occurring.
HAZARD...Flash flooding caused by thunderstorms.
SOURCE...Law enforcement.
IMPACT...Flooding of small creeks and streams, urban areas,
highways, streets and underpasses as well as other
drainage and low lying areas.
* Some locations that will experience flash flooding include...
Nacogdoches, Rusk, Alto, Wells, Douglass, Pollok, Forest, Woden,
Melrose, Morrill, Martinsville, Appleby, Chireno, Central,
Looneyville, Lilbert, Linwood and Denning.
Additional rainfall amounts of 1 to 2 inches are possible in the
warned area.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
Turn around, don't drown when encountering flooded roads. Most flood
deaths occur in vehicles.
Be especially cautious at night when it is harder to recognize the
dangers of flooding.
Please report flooding to your local law enforcement agency when you
can do so safely.
&&
LAT...LON 3178 9540 3178 9495 3162 9417 3140 9429
3144 9472 3137 9496 3138 9495 3142 9501
3144 9501 3147 9510 3152 9510 3159 9517
3158 9526 3163 9529 3168 9528 3172 9534
3173 9533 3173 9537 3175 9536 3176 9540
FLASH FLOOD...OBSERVED
$$
44The office that day
Everything else NWS Shreveport, LA issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| May 9, 3:30 PM CDT | Special Weather Statement | SHV | Nacogdoches | 45 min |
| May 9, 3:56 PM CDT | Severe Thunderstorm Warning | SHV | Cherokee, Nacogdoches | 64 min |
| May 9, 3:59 PM CDT | Severe Thunderstorm Warning | SHV | Cherokee | 42 min |
| May 9, 4:26 PM CDT | Severe Thunderstorm Warning | SHV | Nacogdoches, San Augustine | 64 min |
| May 9, 5:09 PM CDT | Special Weather Statement | SHV | Wood | 66 min |
| May 9, 5:18 PM CDT | Special Weather Statement | SHV | Angelina | 57 min |
| May 9, 5:28 PM CDT | Severe Thunderstorm Warning | SHV | Angelina, Cherokee, Nacogdoches, Sabine, San Augustine | 62 min |
| May 9, 6:23 PM CDT | Severe Thunderstorm Warning | SHV | Angelina, Sabine, San Augustine | 67 min |
| May 9, 6:58 PM CDT | Flash Flood Warning | SHV | Angelina, Nacogdoches, Sabine, San Augustine, Shelby | 10 hr |
Nearby
Flash Flood Warnings in Texas, 2021Every flash flood warning in 2021
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.