Position: 310 miles east-northeast of LIT VOR (Little Rock)Altitude: 34,000 feet
Groundspeed: 468 mph (407 kts)
Equipment: A321
Pax-on-board: 173
Airborne...
Was that a flash in our eleven o'clock? I ask the co-pilot if he saw it... No, nothing. Ahh... I must be imagining things. Storms are not in the forecast tonight. My dispatcher, one of the best in this business, told me earlier that he ordered better than normal weather because of my questionable flying abilities. I, in turn, asked if he was still attending remedial math classes for better fuel calculations. The banter is brutal and never ending on the Line. In a few years, it will probably be considered inappropriate behaviour.
Our new A321 is in the Star Trek mode, i.e., the highest level of automation. Five flight management computers are talking to each other, comparing electron streams sent to various user units. Her latest and greatest digital weather radar is entwined with Fi-Fi's all encompassing grid. What an amazing difference from the early, monochromatic, non-stabilized units on which I learned the art and sorcery of high altitude weather detection.
It is a quiet night and I am looking forward to getting home to the wife-of-my-youth. Outside, the air mass is cold, dark, and smooth. Headwinds of 70 mph (62 kts) are light compared to what they could be this time of year. Two former U.S. Navy boys, flying a 737, are forty miles ahead (we can see them on our nav displays)... They are reporting a smooth ride.
Whoa! I am reasonably sure that was a flash in our eleven o'clock. The co-pilot says, "OK, I saw it that time." Before I can ask ATC about weather ahead, the email alert light begins to flash. The mini-printer starts spitting out a message from Mother, probably my dispatcher. It says: Hey cap/ trws 50 sw lit extendng to 100 ne stl/ south end line tops abv 40/north end abv 35/growing rapidly/hole north lit; short hand for... "Hey, captain, thunderstorms ahead extending from 50 southwest of Little Rock to 100 northeast of St. Louis. South end of the line tops over 40,000 feet, north end above 35,000 feet and growing rapidly. There is a hole in the line ahead; north of Littlerock."
This is the middle of the winter! Thunderstorms are rare, but not unheard of this time of year. The continuous mental fuel loop running in the back of my brain moves to the front and is replaced by my faithful little red "uh-oh" light... It is flashing. Instinctively, I know flying around the north end of the line would strain our fuel load. We would have to perform a ninety degree turn to the right, or north. The line is probably building from the south, so we are not going there either. We will fly toward the break in the line of storms and take a look.
100 miles northeast of Little Rock...
Oh yeah, it is a big line. The lightning flashes are continuous from our ten o'clock to our three o'clock. They are popping like rows of flash bulbs, throwing bursts of white light into the night sky. We do not have eyeballs on storm clouds yet, but the radar is painting a clear and accurate picture. There is a break in our twelve o'clock that is about fifty miles across. It is time to tell the cabin crew and the pax to batten down the hatches.
50 miles east of the gap...
We can now see the thunderstorms visually. The lightning inside the cells is impressive. I would guesstimate the cell tops at about 40,000 feet on both sides. Wispy cloud layers, conducting the lightning flashes like fiber optics, fills the area between the storms. The 737 crew is just entering the high altitude hole; they call moderate turbulence, as expected. Great! A quick call to the cabin confirms that everyone is seated with seat belts fastened.
Through the gap...
The Electric Jet punches the gap at turbulence penetration speed. The ride goes from smooth to moderate turbulence in a second. Rapid sequenced lightning flashes illuminate the area around the aircraft; they are miles away but seem to be underneath us. Night ops around storms are always scarier than daylight ops. There are white caps in my coffee cup. This make me chuckle as I remember one of the late, great Captains of my early days as a co-pilot admonish me for putting white caps in his coffee. He would really get a kick out of this A321... Well, maybe not. He had Boeing blood running through his veins.
The long fuselage of the 321 is twisting and flexing as she passes through the gap. In the cockpit, it feels like being on the end of a long stick. Mild paranoia causes me to take the weather radar out of Fi-Fi's grid and point the antenna down looking for fast rising columns of convection. Nothing down there except ground reflection.
Something falls on the floor in the forward galley. It sounds like several plates crashing together. We can still see the Navy boys ahead on our nav displays. They are in the clear now and reporting smooth rides. The turbulence is of a higher frequency now, causing the engine fuel computers to start over controlling, hence causing bigger than necessary airspeed fluctuations. I can do better, so I take the engines away from Fi-Fi and hook them up to captain Dave's thrust control, via my right hand. She hisses at me and throws a red warning light my way... Calm down Fi-Fi, everything will be OK.
The forward windscreens are alive with static discharge looking like tiny bolts of lightning. We have temporarily lost communication with ATC as the static builds on the antennas.
And then, as suddenly as it started, the turbulence is gone. We are in the clear on the west side of the line of storms. Tiny towns stretch before us like so many little diamond broaches. Looking out my left side window, I can see the immense size of the storms as we leave them behind.
I return airspeed and thrust control to Fi-Fi, and then call the lead flight attendant for a damage report. Yep, a couple of plates fell out of the carts, but all pax are OK. That is exactly what I wanted to hear. The email alert light is flashing with another message from my dispatcher. He wants to know about the ride through the hole and if I was scared... Oh, this guy is good. I must think of a worthy reply as we continue underneath Orion the Hunter toward the west coast.
Life on the Line continues...


