Alert archive / Missouri / Flood Watches in 2012
Flood Watch 1, NWS St. Louis, MO
NWS St. Louis, MO issued this flood watch at Mar 21, 2012, 2:02 PM CDT for Boone County, Cole County, Moniteau County, Missouri. It was in force for 14 hr.
The area
The counties it named.
The facts
- Issued
- Mar 21, 2012, 2:02 PM CDT (19:02 UTC)
- Expired
- Mar 22, 2012, 4:00 AM CDT
- In force
- 14 hr
- Issued by
- NWS St. Louis, MO
- Flood severity
- None
Counties Boone County, MO, Cole County, MO, Moniteau County, MO
The radar
The St Louis radar (KLSX), 148 km from the middle of the area, began a volume at 19:05 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.
The nearest sounding before it
Springfield, MO (KSGF), launched 12:00Z, 7.0 hours before the alert went out and 236 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
- 62 J/kg
- Mixed-layer CIN
- -28 J/kg
- Mixed-layer LCL
- 580 m above ground
- 0-6 km bulk shear
- 49 kt
- 0-1 km storm-relative helicity
- 304 m²/s²
- 0-3 km storm-relative helicity
- 281 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted, in the capitals the NWS used until 2016.
825 WGUS63 KLSX 211902 FFALSX URGENT - IMMEDIATE BROADCAST REQUESTED FLOOD WATCH NATIONAL WEATHER SERVICE ST LOUIS MO 202 PM CDT WED MAR 21 2012 MOZ041-047-048-220900- /O.NEW.KLSX.FA.A.0001.120321T1902Z-120322T0900Z/ /00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/ BOONE MO-MONITEAU MO-COLE MO- INCLUDING THE CITIES OF...COLUMBIA...JEFFERSON CITY 202 PM CDT WED MAR 21 2012 ...FLOOD WATCH IN EFFECT THROUGH LATE TONIGHT... THE NATIONAL WEATHER SERVICE IN ST LOUIS HAS ISSUED A * FLOOD WATCH FOR A PORTION OF CENTRAL MISSOURI...INCLUDING THE FOLLOWING COUNTIES...BOONE MO...COLE MO AND MONITEAU MO. * THROUGH LATE TONIGHT * PERSISTENT SHOWERS LAST NIGHT AND EARLY THIS MORNING PRODUCED 1 TO 3 INCHES OF RAIN ACROSS THE AREA. SHOWERS WILL IMPACT THE AREA THROUGH LATE TONIGHT...WHICH ADDITIONAL RAINFALL AMOUNTS AVERAGING AROUND 1 INCH. * RUNOFF FROM THE RAINFALL COULD CAUSE FLOODING OF SMALL CREEKS AND STREAMS...FLOOD PRONE ROADS AND LOW WATER CROSSINGS. PRECAUTIONARY/PREPAREDNESS ACTIONS... A FLOOD WATCH MEANS THAT FLOODING IS POSSIBLE BUT NOT IMMINENT IN THE WATCH AREA. PEOPLE IN THE WATCH AREA ARE URGED TO CHECK ON PREPAREDNESS REQUIREMENTS...ESPECIALLY IF YOU HAVE INTERESTS ALONG AREA CREEKS...STREAMS AND RIVERS. STAY INFORMED...AND BE READY FOR ACTION IF FLOODING IS OBSERVED OR IF A FLOOD WARNING IS ISSUED. && $$ GLASS
1 follow-up statement
897 WGUS63 KLSX 220901 FFALSX FLOOD WATCH NATIONAL WEATHER SERVICE ST LOUIS MO 401 AM CDT THU MAR 22 2012 MOZ041-047-048-221015- /O.EXP.KLSX.FA.A.0001.000000T0000Z-120322T0900Z/ /00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/ BOONE MO-MONITEAU MO-COLE MO- INCLUDING THE CITIES OF...COLUMBIA...JEFFERSON CITY 401 AM CDT THU MAR 22 2012 ...FLOOD WATCH WILL EXPIRE AT 4 AM CDT EARLY THIS MORNING... THE FLOOD WATCH FOR A PORTION OF CENTRAL MISSOURI WILL EXPIRE AT 4 AM CDT THIS MORNING. ALTHOUGH SCATTERED SHOWERS WILL CONTINUE FOR THE NEXT SEVERAL HOURS...THE THREAT FOR PERSISTENT MODERATE TO HEAVY RAINFALL HAS ENDED. $$ MILLER
The office that day
Everything else NWS St. Louis, MO issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Mar 21, 8:48 AM CDT | River Flood Warning | LSX | Cole | 55 hr |
| Mar 21, 10:59 AM CDT | Areal Flood Warning | LSX | Moniteau | 24 hr |
| Mar 21, 5:21 PM CDT | River Flood Warning | LSX | Gasconade, Montgomery | 3 days |
| Mar 21, 5:21 PM CDT | River Flood Warning | LSX | Gasconade, Montgomery | 6 days |
Nearby
Sources
The product and its follow-ups from the Iowa Environmental Mesonet's archive of National Weather Service and Storm Prediction Center text; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.