Alert archive / Texas / Flash Flood Warnings in 2018
Flash Flood Warning 21, NWS Fort Worth, TX
NWS Fort Worth, TX issued this flash flood warning at Sep 22, 2018, 8:33 PM CDT for Fannin County, Grayson County, Texas. It was in force for 5 hr. 2 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
- Sep 22, 2018, 8:33 PM CDT (01:33 UTC)
- Expired
- Sep 23, 2018, 1:30 AM CDT
- In force
- 5 hr
- Issued by
- NWS Fort Worth, TX
- Area
- Storm-based polygon
- Flood severity
- None
Counties Fannin County, TX, Grayson County, TX
The radar
The Dallas/Ft Worth radar (KFWS), 152 km from the middle of the area, began a volume at 01:35 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 |
|---|---|---|---|
| Sep 22, 9:23 PM CDT | FLASH FLOOD | Howe, TX | VEHICLE SWEPT OFF DAGNAN RD DUE TO FLASH FLOODING. |
| Sep 22, 11:08 PM CDT | FLASH FLOOD | Bonham, TX | FLOODING WAS ONGOING ACROSS 8 MAJOR FM ROADS AND 30 COUNTY ROADS. 2 PEOPLE RESCUED FROM STRANDED VEHICLE SOUTH OF BONHAM. |
Local storm reports filed while the alert was in force, from inside its polygon or its counties.
The nearest sounding before it
Fort Worth, TX (KFWD), launched 00:00Z, 1.6 hours before the alert went out and 127 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
- 0 J/kg
- Mixed-layer CIN
- No buoyant parcel
- Mixed-layer LCL
- 575 m above ground
- 0-6 km bulk shear
- 11 kt
- 0-1 km storm-relative helicity
- 139 m²/s²
- 0-3 km storm-relative helicity
- 184 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted.
388
WGUS54 KFWD 230133
FFWFWD
TXC147-181-230430-
/O.NEW.KFWD.FF.W.0021.180923T0133Z-180923T0430Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
BULLETIN - EAS ACTIVATION REQUESTED
Flash Flood Warning
National Weather Service Fort Worth TX
833 PM CDT SAT SEP 22 2018
The National Weather Service in Fort Worth has issued a
* Flash Flood Warning for...
Grayson County in north central Texas...
Fannin County in north central Texas...
* Until 1130 PM CDT..
* At 829 PM CDT, emergency management officials reported heavy rain
across the warned area. Flash flooding is continuing across
portions of Grayson and Fannin Counties. Areas of reported ongoing
flash flooding are Dagnan Road at Swindle Rd and Graham Grove at
Jones Rd in Collinsville. Additional roads may become impacted as
moderate to heavy rain continues.
* Some locations that will experience flooding include...
Sherman, Denison, Bonham, Whitesboro, Van Alstyne, Howe, Pottsboro,
Leonard, Honey Grove, Collinsville, Whitewright, Gunter, Bells, Tom
Bean, Savoy, Ector, Dodd City, Bailey, Knollwood and Ravenna.
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.
Excessive runoff from heavy rainfall will cause flooding of small
creeks and streams, country roads, farmland, and other low lying
spots.
&&
LAT...LON 3385 9686 3382 9676 3384 9670 3392 9667
3390 9659 3385 9663 3378 9643 3369 9635
3377 9629 3376 9619 3384 9615 3388 9592
3384 9585 3341 9586 3334 9637 3340 9639
3342 9694 3395 9694 3396 9693
$$
Hernandez3 follow-up statements
614
WGUS74 KFWD 230318
FFSFWD
Flash Flood Statement
National Weather Service Fort Worth TX
1018 PM CDT SAT SEP 22 2018
TXC147-181-230430-
/O.CON.KFWD.FF.W.0021.000000T0000Z-180923T0430Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
Grayson TX-Fannin TX-
1018 PM CDT SAT SEP 22 2018
...THE FLASH FLOOD WARNING REMAINS IN EFFECT UNTIL 1130 PM CDT FOR
GRAYSON AND FANNIN COUNTIES...
At 1015 PM CDT, Doppler radar indicated heavy rain across Grayson
and Fannin Counties. Up to two inches of rain have already fallen in
the past three hours. It will not take much rainfall to cause a
quick rise in flood waters. Low-lying areas are most vulnerable to
rising water. Some low-water crossings may flood and become
impassable.
Some locations that will experience flooding include...
Sherman, Denison, Bonham, Whitesboro, Van Alstyne, Howe, Pottsboro,
Leonard, Honey Grove, Collinsville, Whitewright, Gunter, Bells, Tom
Bean, Savoy, Ector, Dodd City, Bailey, Knollwood and Ravenna.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
Turn around, don't drown when encountering flooded roads. Most flood
deaths occur in vehicles.
Be especially cautious at night when it is harder to recognize the
dangers of flooding.
Excessive runoff from heavy rainfall will cause flooding of small
creeks and streams, country roads, farmland, and other low lying
spots.
&&
LAT...LON 3385 9686 3382 9676 3384 9670 3392 9667
3390 9659 3385 9663 3378 9643 3369 9635
3377 9629 3376 9619 3384 9615 3388 9592
3384 9585 3341 9586 3334 9637 3340 9639
3342 9694 3395 9694 3396 9693
$$
Hernandez602
WGUS74 KFWD 230415
FFSFWD
Flash Flood Statement
National Weather Service Fort Worth TX
1115 PM CDT SAT SEP 22 2018
TXC181-230424-
/O.CAN.KFWD.FF.W.0021.000000T0000Z-180923T0430Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
Grayson TX-
1115 PM CDT SAT SEP 22 2018
...THE FLASH FLOOD WARNING FOR GRAYSON COUNTY IS CANCELLED...
Flash Flooding is no longer expected to pose a threat as the rain is
coming to an end. Please continue to heed any remaining road
closures.
LAT...LON 3384 9585 3341 9586 3334 9637 3340 9639
3372 9638 3371 9638 3369 9636 3370 9632
3377 9629 3375 9623 3376 9619 3384 9615
3384 9605 3386 9603 3384 9602 3385 9600
3387 9600 3385 9598 3388 9592
$$
TXC147-230430-
/O.CON.KFWD.FF.W.0021.000000T0000Z-180923T0430Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
Fannin TX-
1115 PM CDT SAT SEP 22 2018
...THE FLASH FLOOD WARNING REMAINS IN EFFECT UNTIL 1130 PM CDT FOR
FANNIN COUNTY...
At 1114 PM CDT, local law enforcement reported flash flooding in
along multiple Farm to Market roads, as well as County Roads. Up to
two inches of rain have already fallen. Flash flooding is continuing
across Fannin County.
Some locations that will experience flooding include...
Bonham, Leonard, Honey Grove, Whitewright, Savoy, Ector, Dodd City,
Bailey, Ravenna, Bonham State Park, Trenton, Ladonia, Pecan Gap and
Windom.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
Turn around, don't drown when encountering flooded roads. Most flood
deaths occur in vehicles.
Be especially cautious at night when it is harder to recognize the
dangers of flooding.
Excessive runoff from heavy rainfall will cause flooding of small
creeks and streams, country roads, farmland, and other low lying
spots.
&&
LAT...LON 3384 9585 3341 9586 3334 9637 3340 9639
3372 9638 3371 9638 3369 9636 3370 9632
3377 9629 3375 9623 3376 9619 3384 9615
3384 9605 3386 9603 3384 9602 3385 9600
3387 9600 3385 9598 3388 9592
$$
Hernandez946
WGUS54 KFWD 230417
FFWFWD
TXC147-230630-
/O.EXT.KFWD.FF.W.0021.000000T0000Z-180923T0630Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
BULLETIN - EAS ACTIVATION REQUESTED
Flash Flood Warning
National Weather Service Fort Worth TX
1117 PM CDT SAT SEP 22 2018
The National Weather Service in Fort Worth has extended the
* Flash Flood Warning for...
Fannin County in north central Texas...
* Until 130 AM CDT..
* At 1116 PM CDT, local law enforcement officials reported heavy rain
across the warned area. Up to two inches of rain have already
fallen. Flash flooding is continuing across multiple Farm to
Market Roads, as well as Couty Roads.
* Some locations that will experience flooding include...
Bonham, Leonard, Honey Grove, Whitewright, Savoy, Ector, Dodd City,
Bailey, Ravenna, Bonham State Park, Trenton, Ladonia, Pecan Gap and
Windom.
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.
Excessive runoff from heavy rainfall will cause flooding of small
creeks and streams, country roads, farmland, and other low lying
spots.
&&
LAT...LON 3384 9585 3341 9586 3334 9637 3340 9639
3372 9638 3371 9638 3369 9636 3370 9632
3377 9629 3375 9623 3376 9619 3384 9615
3384 9605 3386 9603 3384 9602 3385 9600
3387 9600 3385 9598 3388 9592
$$
HernandezThe office that day
Everything else NWS Fort Worth, TX issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Sep 22, 7:39 PM CDT | Areal Flood Warning | FWD | Cooke, Fannin, Grayson, Lamar | 3 hr |
| Sep 22, 11:23 PM CDT | Areal Flood Warning | FWD | Grayson | 2 hr |
| Sep 22, 11:32 PM CDT | Areal Flood Advisory | FWD | Fannin | 118 min |
| Sep 22, 11:41 PM CDT | Areal Flood Advisory | FWD | Lamar | 2 hr |
| Sep 23, 1:24 AM CDT | Areal Flood Advisory | FWD | Fannin, Grayson, Lamar | 3 hr |
| Sep 23, 3:57 AM CDT | Flash Flood Watch | FWD | Delta, Fannin, Hopkins, Hunt, Lamar, Rains | 5 hr |
| Sep 23, 4:55 AM CDT | Areal Flood Advisory | FWD | Lamar | 2 hr |
| Sep 23, 6:46 AM CDT | River Flood Warning | FWD | Delta, Lamar | 14 hr |
| Sep 23, 8:49 AM CDT | River Flood Warning | FWD | Collin | 19 hr |
Nearby
Flash Flood Warnings in Texas, 2018Every flash flood warning in 2018
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.