Alert archive / Missouri / Flash Flood Warnings in 2017
Flash Flood Warning 16, NWS St. Louis, MO
NWS St. Louis, MO issued this flash flood warning at Jul 13, 2017, 8:50 PM CDT for Madison County, Sainte Genevieve County, Saint Francois County, Missouri. It was in force for 6 hr. 1 report 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
- Jul 13, 2017, 8:50 PM CDT (01:50 UTC)
- Expired
- Jul 14, 2017, 2:45 AM CDT
- In force
- 6 hr
- Issued by
- NWS St. Louis, MO
- Area
- Storm-based polygon
- Flood severity
- None
Counties Madison County, MO, Saint Francois County, MO, Sainte Genevieve County, MO
The radar
The St Louis radar (KLSX), 123 km from the middle of the area, began a volume at 01:54 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 |
|---|---|---|---|
| Jul 13, 8:53 PM CDT | FLOOD | 1 S Libertyville, MO | WATER OVER INTERSECTION OF HIGHWAY OO AND T. |
Local storm reports filed while the alert was in force, from inside its polygon or its counties.
The nearest sounding before it
Little Rock, AR (KBYH), launched 00:00Z, 1.8 hours before the alert went out and 313 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
- 1476 J/kg
- Mixed-layer CIN
- -11 J/kg
- Mixed-layer LCL
- 1327 m above ground
- 0-6 km bulk shear
- 3 kt
- 0-1 km storm-relative helicity
- -10 m²/s²
- 0-3 km storm-relative helicity
- 26 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted.
771
WGUS53 KLSX 140150
FFWLSX
MOC123-186-187-140745-
/O.NEW.KLSX.FF.W.0016.170714T0150Z-170714T0745Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
BULLETIN - EAS ACTIVATION REQUESTED
Flash Flood Warning
National Weather Service St Louis MO
850 PM CDT THU JUL 13 2017
The National Weather Service in St Louis has issued a
* Flash Flood Warning for...
South central Ste. Genevieve County in southeastern Missouri...
Northern Madison County in southeastern Missouri...
Southeastern St. Francois County in southeastern Missouri...
* Until 245 AM CDT.
* At 849 PM CDT, Doppler radar indicated thunderstorms producing
heavy rain across the warned area. Up to 4 inches of rain has
fallen. Flash flooding is expected to begin shortly.
* Some locations that will experience flooding include...
Fredericktown, Junction City, Cobalt, Womac, Roselle, Knob Lick,
Mine La Motte, Libertyville and Catherine Place.
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 3760 9054 3760 9053 3764 9054 3773 9053
3775 9005 3767 9011 3764 9015 3751 9014
3751 9055
$$
Byrd1 follow-up statement
001
WGUS73 KLSX 140744
FFSLSX
Flash Flood Statement
National Weather Service St Louis MO
244 AM CDT FRI JUL 14 2017
MOC123-186-187-140753-
/O.EXP.KLSX.FF.W.0016.000000T0000Z-170714T0745Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
Ste. Genevieve MO-Madison MO-St. Francois MO-
244 AM CDT FRI JUL 14 2017
...THE FLASH FLOOD WARNING FOR SOUTH CENTRAL STE. GENEVIEVE...
NORTHERN MADISON AND SOUTHEASTERN ST. FRANCOIS COUNTIES IN
SOUTHEASTERN MISSOURI WILL EXPIRE AT 245 AM CDT...
The heavy rain has ended. Flash Flooding is no longer expected to
pose a threat. Please continue to heed any remaining road closures.
LAT...LON 3760 9054 3760 9053 3764 9054 3773 9053
3775 9005 3767 9011 3764 9015 3751 9014
3751 9055
$$
GosselinThe office that day
Everything else NWS St. Louis, MO issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jul 13, 8:11 PM CDT | Special Weather Statement | LSX | Moniteau | 49 min |
| Jul 13, 8:21 PM CDT | Special Weather Statement | LSX | Madison | 39 min |
| Jul 13, 11:16 PM CDT | Flash Flood Warning | LSX | Iron, Madison, Reynolds | 6 hr |
Nearby
Flash Flood Warnings in Missouri, 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.