Alert archive / Arkansas / Red Flag Warnings in 2011
Red Flag Warning 2, NWS Memphis, TN
NWS Memphis, TN issued this red flag warning at Apr 6, 2011, 5:00 AM CDT for 12 counties in Arkansas; Dunklin County, Pemiscot County, Missouri. It took effect at Apr 6, 2011, 12:00 PM CDT. It was in force for 4 hr. No storm report in the archive falls inside the area while it was in force.
The area
The counties it named.
The facts
- Issued
- Apr 6, 2011, 5:00 AM CDT (10:00 UTC)
- In effect from
- Apr 6, 2011, 12:00 PM CDT
- Expired
- Apr 6, 2011, 3:57 PM CDT
- In force
- 4 hr
- Issued by
- NWS Memphis, TN
Counties Clay County, AR, Craighead County, AR, Crittenden County, AR, Cross County, AR, Greene County, AR, Lawrence County, AR, Lee County, AR, Mississippi County, AR, Phillips County, AR, Poinsett County, AR, Randolph County, AR, St. Francis County, AR, Dunklin County, MO, Pemiscot County, MO
The radar
The Memphis radar (KNQA), 71 km from the middle of the area, began a volume at 09:59 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
Little Rock, AR (KLZK), launched 00:00Z, 10.0 hours before the alert went out and 107 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
- 0 J/kg
- Mixed-layer CIN
- No buoyant parcel
- Mixed-layer LCL
- 3219 m above ground
- 0-6 km bulk shear
- 54 kt
- 0-1 km storm-relative helicity
- 85 m²/s²
- 0-3 km storm-relative helicity
- 203 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted, in the capitals the NWS used until 2016.
973 WWUS84 KMEG 061000 RFWMEG URGENT - FIRE WEATHER MESSAGE NATIONAL WEATHER SERVICE MEMPHIS TN 500 AM CDT WED APR 6 2011 ...RED FLAG CONDITIONS EXPECTED TODAY... .GUSTY SOUTH WINDS WILL DEVELOP AS LOW PRESSURE CONTINUES TO FORM IN THE PLAINS. A COLD FRONT THAT PUSHED THROUGH THE GULF HAS CUT OFF SIGNIFICANT MOISTURE RETURN TODAY...SO CRITICALLY LOW RH VALUES ARE FORECASTED. IN ADDITION...FUEL MOISTURE VALUES ARE QUITE LOW...SETTING THE STAGE FOR RED FLAG CONDITIONS. ARZ008-009-017-018-026>028-035-036-048-049-058-MOZ113-115-062130- /O.NEW.KMEG.FW.W.0002.110406T1700Z-110407T0000Z/ RANDOLPH-CLAY-LAWRENCE-GREENE-CRAIGHEAD-POINSETT-MISSISSIPPI- CROSS-CRITTENDEN-ST. FRANCIS-LEE AR-PHILLIPS-DUNKLIN-PEMISCOT- 500 AM CDT WED APR 6 2011 ...RED FLAG WARNING IN EFFECT FROM NOON TODAY TO 7 PM CDT THIS EVENING... THE NATIONAL WEATHER SERVICE IN MEMPHIS HAS ISSUED A RED FLAG WARNING...WHICH IS IN EFFECT FROM NOON TODAY TO 7 PM CDT THIS EVENING. LOW RELATIVE HUMIDITY VALUES NEAR 25 PERCENT WILL COMBINE WITH 20 FOOT WINDS AROUND 15 MPH AND LOW FUEL MOISTURE VALUES AROUND 7 OR 8 PERCENT TO CREATE RED FLAG CONDITIONS THIS AFTERNOON. PRECAUTIONARY/PREPAREDNESS ACTIONS... A RED FLAG WARNING MEANS THAT CRITICAL FIRE WEATHER CONDITIONS ARE EITHER OCCURRING NOW...OR WILL SHORTLY. A COMBINATION OF STRONG WINDS...LOW RELATIVE HUMIDITY...AND WARM TEMPERATURES WILL CREATE EXPLOSIVE FIRE GROWTH POTENTIAL. && $$ BORGHOFF
1 follow-up statement
831 WWUS84 KMEG 062057 RFWMEG URGENT - FIRE WEATHER MESSAGE NATIONAL WEATHER SERVICE MEMPHIS TN 357 PM CDT WED APR 6 2011 ...RED FLAG WARNING HAS BEEN CANCELLED... .RELATIVE HUMIDITY VALUES ACROSS THE WARNED AREA HAVE INCREASED THROUGH THE AFTERNOON HOURS AND DO NOT POSE AN IMMEDIATE THREAT. ARZ008-009-017-018-026>028-035-036-048-049-058-MOZ113-115-062200- /O.CAN.KMEG.FW.W.0002.000000T0000Z-110407T0000Z/ RANDOLPH-CLAY-LAWRENCE-GREENE-CRAIGHEAD-POINSETT-MISSISSIPPI- CROSS-CRITTENDEN-ST. FRANCIS-LEE AR-PHILLIPS-DUNKLIN-PEMISCOT- 357 PM CDT WED APR 6 2011 ...RED FLAG WARNING IS CANCELLED... THE NATIONAL WEATHER SERVICE IN MEMPHIS HAS CANCELLED THE RED FLAG WARNING. $$ CCD
The office that day
Everything else NWS Memphis, TN issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Apr 6, 4:03 AM CDT | Wind Advisory | MEG | Clay, Craighead, Crittenden, Cross, Greene, Lawrence and 6 more | 15 hr |
Nearby
Red Flag Warnings in Arkansas, 2011Red Flag Warnings in Missouri, 2011Every red flag warning in 2011
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.