Alert archive / Missouri / Flash Flood Warnings in 2021
Flash Flood Warning 31, NWS Springfield, MO
NWS Springfield, MO issued this flash flood warning at May 17, 2021, 9:00 PM CDT for Greene County, Polk 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
- May 17, 2021, 9:00 PM CDT (02:00 UTC)
- Expired
- May 18, 2021, 12:57 AM CDT
- In force
- 4 hr
- Issued by
- NWS Springfield, MO
- Area
- Storm-based polygon
- Flood severity
- None
Counties Greene County, MO, Polk County, MO
The radar
The Springfield radar (KSGF), 23 km from the middle of the area, began a volume at 02:04 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 |
|---|---|---|---|
| May 17, 9:22 PM CDT | FLASH FLOOD | 2 S Pleasant Hope, MO | FLASH FLOODING AT HIGHWAY H AND 564TH ROAD NEAR PLEASANT HOPE. |
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, 2.0 hours before the alert went out and 73 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
- 371 J/kg
- Mixed-layer CIN
- -3 J/kg
- Mixed-layer LCL
- 501 m above ground
- 0-6 km bulk shear
- 18 kt
- 0-1 km storm-relative helicity
- 211 m²/s²
- 0-3 km storm-relative helicity
- 303 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted.
751
WGUS53 KSGF 180200
FFWSGF
MOC077-167-180800-
/O.NEW.KSGF.FF.W.0031.210518T0200Z-210518T0800Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
BULLETIN - EAS ACTIVATION REQUESTED
Flash Flood Warning
National Weather Service Springfield MO
900 PM CDT Mon May 17 2021
The National Weather Service in Springfield has issued a
* Flash Flood Warning for...
North Central Greene County in southwestern Missouri...
Southeastern Polk County in southwestern Missouri...
* Until 300 AM CDT.
* At 900 PM CDT, Doppler radar and automated rain gauges indicated
thunderstorms producing heavy rain across the warned area. Between
1 and 3 inches of rain have fallen. Flash flooding is ongoing or
expected to begin shortly.
HAZARD...Flash flooding caused by thunderstorms.
SOURCE...Radar and automated gauges.
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...
Pleasant Hope, Brighton and Ebenezer.
This includes the following low water crossings...
Route CC at Kings Branch 3 miles north of Ebenezer, Route Y at
Mckinney Branch 6 miles southeast of Bolivar, Highway 215 just
east of Pleasant Hope and Route H just north of Pleasant Hope.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
Turn around, don't drown when encountering flooded roads. Most flood
deaths occur in vehicles.
&&
LAT...LON 3737 9344 3742 9337 3755 9341 3758 9332
3757 9318 3742 9318 3733 9331 3733 9338
FLASH FLOOD...RADAR AND GAUGE INDICATED
$$
MB1 follow-up statement
982
WGUS73 KSGF 180557
FFSSGF
Flash Flood Statement
National Weather Service Springfield MO
1257 AM CDT Tue May 18 2021
MOC077-167-180607-
/O.CAN.KSGF.FF.W.0031.000000T0000Z-210518T0800Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
Greene MO-Polk MO-
1257 AM CDT Tue May 18 2021
...FLASH FLOOD WARNING IS CANCELLED FOR NORTH CENTRAL GREENE AND
SOUTHEASTERN POLK COUNTIES...
The heavy rain has ended. The Flash Flood Warning has been replaced
by a Flood Warning. Please continue to heed remaining road closures.
LAT...LON 3737 9344 3742 9337 3755 9341 3758 9332
3757 9318 3742 9318 3733 9331 3733 9338
$$
JTThe office that day
Everything else NWS Springfield, MO issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| May 17, 7:03 PM CDT | Flash Flood Warning | SGF | Greene, Polk | 6 hr |
| May 17, 8:35 PM CDT | Flash Flood Warning | SGF | Barry, Christian, Lawrence, Stone | 6 hr |
| May 17, 9:59 PM CDT | River Flood Warning | SGF | Cedar | 27 hr |
| May 17, 10:10 PM CDT | Flash Flood Warning | SGF | Lawrence | 6 hr |
| May 17, 10:58 PM CDT | Flash Flood Warning | SGF | Barry, Lawrence | 6 hr |
| May 18, 12:53 AM CDT | Areal Flood Warning | SGF | Greene, Polk | 12 hr |
| May 18, 2:21 AM CDT | Areal Flood Warning | SGF | Barry, Christian, Lawrence, Stone | 12 hr |
| May 18, 3:01 AM CDT | River Flood Warning | SGF | St. Clair | 5 days |
| May 18, 4:55 AM CDT | Areal Flood Warning | SGF | Dade | 8 hr |
| May 18, 7:34 AM CDT | River Flood Warning | SGF | Cedar | 7 hr |
| May 18, 5:16 PM CDT | River Flood Warning | SGF | Vernon | 40 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.