Alert archive / Missouri / Flash Flood Warnings in 2021
Flash Flood Warning 26, NWS Springfield, MO
NWS Springfield, MO issued this flash flood warning at Apr 29, 2021, 1:58 AM CDT for Phelps County, Missouri. It was in force for 2 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
- Apr 29, 2021, 1:58 AM CDT (06:58 UTC)
- Expired
- Apr 29, 2021, 3:58 AM CDT
- In force
- 2 hr
- Issued by
- NWS Springfield, MO
- Area
- Storm-based polygon
- Flood severity
- None
County Phelps County, MO
The radar
The St Louis radar (KLSX), 113 km from the middle of the area, began a volume at 06:57 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 |
|---|---|---|---|
| Apr 29, 2:11 AM CDT | FLASH FLOOD | 2 Wsw Saint James, MO | WATER OVER THE ROADWAY ON COUNTY ROAD 3270. |
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 00:00Z, 7.0 hours before the alert went out and 228 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
- 48 J/kg
- Mixed-layer CIN
- -143 J/kg
- Mixed-layer LCL
- 761 m above ground
- 0-6 km bulk shear
- 52 kt
- 0-1 km storm-relative helicity
- 320 m²/s²
- 0-3 km storm-relative helicity
- 258 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 2.3
The text
As transmitted.
308
WGUS53 KSGF 290658
FFWSGF
MOC161-291100-
/O.NEW.KSGF.FF.W.0026.210429T0658Z-210429T1100Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
BULLETIN - EAS ACTIVATION REQUESTED
Flash Flood Warning
National Weather Service Springfield MO
158 AM CDT Thu Apr 29 2021
The National Weather Service in Springfield has issued a
* Flash Flood Warning for...
Northeastern Phelps County in east central Missouri...
* Until 600 AM CDT.
* At 158 AM CDT, Doppler radar indicated thunderstorms producing
heavy rain across the warned area. Between 1 and 2 inches of rain
have fallen. Flash flooding is ongoing or expected to begin
shortly.
HAZARD...Flash flooding caused by thunderstorms.
SOURCE...Radar.
IMPACT...Flash flooding of small creeks and streams, urban
areas, highways, streets and underpasses as well as
other poor drainage and low-lying areas.
* Some locations that will experience flash flooding include...
Rolla, St. James and Rosati.
This includes the following highways...
Interstate 44 between mile markers 188 and 200.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
Be especially cautious at night when it is harder to recognize the
dangers of flooding.
&&
LAT...LON 3807 9163 3815 9154 3815 9153 3788 9153
3788 9156 3785 9170 3788 9187 3805 9166
3805 9163
FLASH FLOOD...RADAR INDICATED
$$
MMT1 follow-up statement
438
WGUS73 KSGF 290858
FFSSGF
Flash Flood Statement
National Weather Service Springfield MO
358 AM CDT Thu Apr 29 2021
MOC161-290908-
/O.CAN.KSGF.FF.W.0026.000000T0000Z-210429T1100Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
Phelps MO-
358 AM CDT Thu Apr 29 2021
...FLASH FLOOD WARNING IS CANCELLED FOR NORTHEASTERN PHELPS COUNTY...
The heavy rain has ended. Flooding is no longer expected to pose a
threat. Please continue to heed remaining road closures.
LAT...LON 3807 9163 3815 9154 3815 9153 3788 9153
3788 9156 3785 9170 3788 9187 3805 9166
3805 9163
$$
MMTThe office that day
Everything else NWS Springfield, MO issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Apr 28, 7:42 PM CDT | Areal Flood Warning | SGF | McDonald | 23 hr |
| Apr 29, 12:38 AM CDT | Flash Flood Warning | SGF | Greene, Webster, Wright | 3 hr |
| Apr 29, 2:51 AM CDT | Severe Thunderstorm Warning | SGF | Oregon | 24 min |
| Apr 29, 5:22 AM CDT | Areal Flood Warning | SGF | Christian, Greene, Webster | 12 hr |
Nearby
Flash Flood Warnings in Missouri, 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.