Alert archive / Missouri / Flash Flood Warnings in 2012
Flash Flood Warning 11, NWS St. Louis, MO
NWS St. Louis, MO issued this flash flood warning at Mar 17, 2012, 2:22 PM CDT for Osage County, Missouri. It was in force for 4 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
- Mar 17, 2012, 2:22 PM CDT (19:22 UTC)
- Expired
- Mar 17, 2012, 6:30 PM CDT
- In force
- 4 hr
- Issued by
- NWS St. Louis, MO
- Area
- Storm-based polygon
- Flood severity
- None
County Osage County, MO
The radar
The St Louis radar (KLSX), 99 km from the middle of the area, began a volume at 19:21 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 |
|---|---|---|---|
| Mar 17, 6:25 PM CDT | FLASH FLOOD | 10 Se Rich Fountain, MO | CREEKS REMAIN OUT OF THEIR BANKS AND GRAVEL ROADS REMAIN FLOODED |
Local storm reports filed while the alert was in force, from inside its polygon or its counties.
The nearest sounding before it
Springfield, MO (KSGF), launched 12:00Z, 7.4 hours before the alert went out and 246 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
- 1549 J/kg
- Mixed-layer CIN
- -22 J/kg
- Mixed-layer LCL
- 724 m above ground
- 0-6 km bulk shear
- 25 kt
- 0-1 km storm-relative helicity
- 71 m²/s²
- 0-3 km storm-relative helicity
- 83 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted, in the capitals the NWS used until 2016.
149
WGUS53 KLSX 171922
FFWLSX
MOC151-172330-
/O.NEW.KLSX.FF.W.0011.120317T1922Z-120317T2330Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
BULLETIN - EAS ACTIVATION REQUESTED
FLASH FLOOD WARNING
NATIONAL WEATHER SERVICE ST LOUIS MO
222 PM CDT SAT MAR 17 2012
THE NATIONAL WEATHER SERVICE IN ST LOUIS HAS ISSUED A
* FLASH FLOOD WARNING FOR...
EASTERN OSAGE COUNTY IN CENTRAL MISSOURI...
* UNTIL 630 PM CDT
* AT 218 PM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED
SLOW MOVING THUNDERSTORMS WITH VERY HEAVY RAINFALL HAVE BEEN
MOVING ACROSS THE WARNED AREA SINCE 1230 PM. RAINFALL ESTIMATES
FROM RADAR INDICATE THAT 2 TO 3 INCHES OF RAIN FELL
BETWEEN RICH FOUNTAIN AND BELLE DURING THIS TIME.
* ALTHOUGH THE HEAVIEST RAIN IS EXPECTED TO DIMINISH BY AROUND 3
PM...RUNOFF FROM THIS EXCESSIVE RAINFALL WILL CONTINUE A FLASH
FLOODING THREAT FOR THE REST OF THE AFTERNOON. SOME LOCATIONS THAT
WILL EXPERIENCE FLOODING INCLUDE... LINN...FREEBURG AND
RICH FOUNTAIN.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
A FLASH FLOOD WARNING MEANS THAT FLOODING IS IMMINENT OR OCCURRING.
IF YOU ARE IN THE WARNING AREA MOVE TO HIGHER GROUND IMMEDIATELY.
RESIDENTS LIVING ALONG STREAMS AND CREEKS SHOULD TAKE IMMEDIATE
PRECAUTIONS TO PROTECT LIFE AND PROPERTY. DO NOT ATTEMPT TO CROSS
SWIFTLY FLOWING WATERS OR WATERS OF UNKNOWN DEPTH BY FOOT OR BY
AUTOMOBILE.
&&
LAT...LON 3870 9164 3828 9165 3828 9179 3829 9179
3829 9209
$$
TRUETT1 follow-up statement
116
WGUS73 KLSX 172113
FFSLSX
FLASH FLOOD STATEMENT
NATIONAL WEATHER SERVICE ST LOUIS MO
413 PM CDT SAT MAR 17 2012
MOC151-172330-
/O.CON.KLSX.FF.W.0011.000000T0000Z-120317T2330Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
OSAGE MO-
413 PM CDT SAT MAR 17 2012
...FLASH FLOOD WARNING REMAINS IN EFFECT FOR EASTERN OSAGE COUNTY
UNTIL 630 PM CDT...
AT 408 PM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED
ANOTHER ROUND OF THUNDERSTORMS WITH HEAVY RAIN APPROACHING OSAGE
COUNTY FROM THE SOUTH. WHILE THE ENTIRE COUNTY COULD EXPERIENCE
HEAVY RAIN FROM THIS NEXT ROUND OF STORMS...THE AREA OF GREATEST
CONCERN IS EASTERN AND SOUTHEAST SECTIONS OF THE COUNTY WHICH HAS
ALREADY EXPERIENCED BETWEEN 1 AND 3 INCHES OF RAIN SO FAR TODAY.
A FLASH FLOOD THREAT WILL REMAIN VERY HIGH THIS EVENING. SOME
LOCATIONS THAT WILL EXPERIENCE FLOODING INCLUDE...LINN...FREEBURG
AND RICH FOUNTAIN.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
DO NOT DRIVE YOUR VEHICLE INTO AREAS WHERE THE WATER COVERS THE
ROADWAY. THE WATER DEPTH MAY BE TOO GREAT TO ALLOW YOUR CAR TO CROSS
SAFELY.
IN HILLY TERRAIN...THERE ARE HUNDREDS OF LOW WATER CROSSINGS WHICH
ARE POTENTIALLY DANGEROUS IN HEAVY RAIN. DO NOT ATTEMPT TO TRAVEL
ACROSS FLOODED ROADS. FIND ALTERNATE ROUTES. IT ONLY TAKES A FEW
INCHES OF SWIFTLY FLOWING WATER TO CARRY VEHICLES AWAY.
&&
LAT...LON 3870 9164 3828 9165 3828 9179 3829 9179
3829 9209
$$
TRUETTThe office that day
Everything else NWS St. Louis, MO issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Mar 17, 3:38 PM CDT | Flash Flood Watch | LSX | Crawford, Franklin, Gasconade, Jefferson, Osage, Saint Charles and 6 more | 6 hr |
| Mar 17, 3:59 PM CDT | Severe Thunderstorm Warning | LSX | Jefferson | 46 min |
| Mar 17, 4:54 PM CDT | Areal Flood Advisory | LSX | Saint Louis, City of Saint Louis | 4 hr |
| Mar 17, 5:13 PM CDT | Areal Flood Advisory | LSX | Saint Charles | 4 hr |
| Mar 17, 5:51 PM CDT | Severe Thunderstorm Warning | LSX | Crawford | 25 min |
| Mar 17, 6:13 PM CDT | Flash Flood Warning | LSX | Crawford | 6 hr |
| Mar 17, 6:23 PM CDT | Flash Flood Warning | LSX | Osage | 4 hr |
Nearby
Flash Flood Warnings in Missouri, 2012Every flash flood warning in 2012
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.